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1
Sakharov, M. V., and V. N. Karaulov. "Method of winch drive permanent magnet inverted motor design." Vestnik IGEU, no. 2 (2019): 51–58. http://dx.doi.org/10.17588/2072-2672.2019.2.051-058.
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Designing a permanent magnet synchronous motor (PMSM) of a winch drive needs to take into account the features of this machine. The engine has an inverted design with limited dimensions, is powered by a fre-quency converter, runs at the nominal power frequency and nominal load without using the damping winding and frequency start, and provides the required range of rope winding speeds. There is no specialized engi-neering design methodology for the winch drive PMSM. It is required to make changes and additions to the existing methods of designing synchronous machines when solving the problem of designing a winch drive PMSM. Design and validation calculations were performed in the Mathcad environment based on the tech-nique of designing machines with V.A. Balagurov’s permanent magnets and methods of designing general-purpose industrial synchronous machines with electromagnetic excitation. Field models of PMSM were used for modelling electromechanical processes and thermal status. The developed technique of designing the winch drive permanent magnet inverted motor is different from the known methods and due to this allows accounting for the design features of PMSM in the calculation of the size of the machine, the magnets, the stator core, the choice of electromagnetic loads, the design of the stator winding, the choice of the cooling system and the steel grade of the stator core. The specific requirements of the technical specification are taken into account when calculating the number of poles and the frequency of the supply voltage. A design project of the inverted PMSM of the winch drive has been developed. And the paper presents the design and verification calculations results. The reliability of the results was checked by field modeling of electromechanical processes and the thermal state of the PMSM. The study has solved the problem of no specialized engineering design techniques of the winch drive PMSM. The technique can be used by electromechanical engineers in solving the problem of designing winch drive PMSM as it allows making a design project of the PMSM corresponding to the requirements of the technical specifications and operation feature.
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Jedryczka, Cezary, Wojciech Szelag, and Zbigniew Jerry Piech. "Multiphase permanent magnet synchronous motors with fractional slot windings." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 35, no. 6 (November 7, 2016): 1937–48. http://dx.doi.org/10.1108/compel-03-2016-0120.
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Purpose The purpose of this paper is to investigate advantages of multiphase permanent magnet synchronous motors (PMSM) with fractional slot concentrated windings (FSCW). The investigation is based on comparative analysis and assessment of FSCW PMSM wound as 3, 6, 9 and 12 phase machines suited for low speed applications. Design/methodology/approach The investigations are focussed on distortions of back electromotive (emf) and magnetomotive force (mmf) with the torque ripples and motors’ performance taken into account. The finite element models with the aid of customized computer code have been adopted for motor winding design and back emf, mmf and motor performance analyses. Findings The novel multiphase winding layouts were found to offer lower content of sub-harmonics in the mmf waveforms compared with the traditional three-phase machine designs. Moreover, the investigated multiphase machines exhibited higher average value of the electromagnetic torque, while the multiphase PMSM machines with FSCW were further characterized by significantly lower torque pulsations. Originality/value The analyses presented in this paper demonstrate that PMSM with FSCW are advantageous to their counterpart three-phase machines. Specifically, they offer higher performance and are more suitable to work with multiple drives supplying segmented winding system. This ability of using multi-drive supply for one motor offers flexibility and cost reduction while increasing fault tolerant power train system.
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Esobinenwu, Chizindu Stanley, and Lamidi Salihu Owuda. "Modeling and Simulation of Pulp Mill Permanent Magnet Synchronous Machines with Damper Windings Using Matlab/Simulink." Saudi Journal of Engineering and Technology 8, no. 06 (June 17, 2023): 115–26. http://dx.doi.org/10.36348/sjet.2023.v08i06.002.
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Modeling and simulation of pulp mill plant permanent magnet synchronous machines (PMSM) with damper windings using Matlab/Simulink is presented. Pulp mill is a manufacturing facility that converts wood chips, timber, wood products into wood pulp that is used to produce paper, cardboard, thick fiber board, which can be used by a paper mill for further processing. Pulp and paper industry has been considered a large consumer of energy and constitute a native treat to the plant as a result of machines transient due to heavy load variation. Modeling and simulation of pulp mill plant (PMSM) with damper windings show the behavior of machines virtual image environments to test the performance, stability and safety for less cost. It helps the pulp mill plant designers, engineers and technicians to understand the process of creating and analyzing machines model and predict its performance in the real world. Damper winding is an additional property added in pulp mill plant PMSM to damping out any oscillation that may cause any sudden changes in the load on the rotor when in synchronism. It prevents hunting and provides starting torque and dose not requires machines spinning. The rotor field lags the stator by which the load angle changes as a result of load variation. Permanent magnet synchronous machine (PMSM) is an alternating current (ac) machine whose excitation is provided by the permanent magnet. It has permanent magnet (PM) on the rotor and windings on the stator. PMSM does not have field windings on the stator frame instead, it relies on the magnets to provide the magnetic field against which the rotor interacts to produce a torque. Pulp mill plant PMSM with damper windings was modeling and simulated using Matlab/Simulink as presented in this paper. The electrical and mechanical equations of various steps ware developed in state space form from which the SIMULINK models were built with pulp mill plant PMSM with damper windings using the block-approach method with in-built Matlab/SIMULINK to obtained results for dynamics performance, controllability, stability study and is widely used in the engineering, manufacturing, physical sciences, product development and recommended for pulp mill plant designers, engineers, technicians and plant operators.
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Coteț, Florina-Ambrozia, Iulia Văscan, and Loránd Szabó. "On the Usefulness of Employing ANSYS Motor-CAD Software in Designing Permanent Magnet Synchronous Machines." Designs 7, no. 1 (January 5, 2023): 7. http://dx.doi.org/10.3390/designs7010007.
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This paper deals with the simulation of a permanent magnet synchronous machine (PMSM) to be developed for driving a scroll compressor of a vehicle air conditioning system. The simulations were needed for the verification of the pre-sizing and for the electromagnetic behavior analysis of the PMSM. These were performed by using the ANSYS Motor-CAD software. All the obtained results emphasized that the pre-sizing of the PMSM was performed correctly, and the designed electrical machine can fulfill all the prescribed requirements. To highlight the superiority of the chosen surface-mounted PMSM topology, a comparative study was performed for four PMSMs having the same stator but different rotor topologies having the same quantity of permanent magnets. The study revealed that the PMSM with permanent magnets on its rotor surface is the best-fitting variant for the foreseen application. By intensively using the ANSYS Motor-CAD software, the authors appreciated that this product is a very useful tool in the hands of the designers not only in evaluating the machine’s computed geometry (by checking its correctness and feasibility), but also in its in-depth electromagnetic analysis and in calculating its parameters of interest.
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Huang, Zhao, and Han Xiang Cheng. "Implementing Iterative Learning Control to Reduce Torque Ripple of Permanent Magnet Synchronous Machine." Advanced Materials Research 301-303 (July 2011): 1676–81. http://dx.doi.org/10.4028/www.scientific.net/amr.301-303.1676.
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Permanent magnet synchronous machines (PMSM) are appealing candidates for many high-performance applications such as robotics, machine tools and other electrical propulsion system because of their attractive characteristics. PMSM have advantages of high power density, high torque-to-inertia ratio, and high electrical efficiency. However, the main disadvantage of PMSM is the torque ripples. Therefore, the study of how to compensate the torque ripples so as to improve the tracking performance of PMSM is very meaningful and necessary. In this paper, we focus on the control of a non-sinusoidal permanent magnet synchronous machine. First, we compare the various methods which to reduce the torque ripple. Then, we built a basic PMSM model. After that the Iterative Learning Control (ILC) algorithm is applied to compensate the torque ripple, and improve the tracking performance of the PMSM. The effectiveness of using ILC method to reduce torque ripple is demonstrated by simulink results.
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Semykina, Irina, and Alexandra Tarnetskaya. "Magnet Synchronous Machine of Mine Belt Conveyor Gearless Drum-Motor." E3S Web of Conferences 41 (2018): 03014. http://dx.doi.org/10.1051/e3sconf/20184103014.
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In the recent decades there has been a tendency for simplifying gears construction, furthermore a lot of manufacturers design gearless electric drives for traction and power mechanisms. Rejection of mechanical transmission and replacing obsolete induction motor with energy-efficient permanent magnet synchronous machine (PMSM) allow to increase electric drive reliability, reduce repair and maintenance costs, also improve the technological process and industrial safety.This article is devoted to questions of permanent magnet synchronous motor control for underground belt conveyor gearless drum-motor. The model of PMSM with special construction was created by finite elements method in Infolytica MagNet and MotorSolve environments, simulation was provided with to regard due special nature of high-torque slow-moving power machines. The last section of article contains comparison of methods for high-torque slow-moving PMSM control and simulation results of vector control system.
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Bachir, Naas, Benalia M’hamdi, Amari Abderrahmane, and Naas Badreddine. "Double star permanent magnet synchronous machine: modified direct torque control." STUDIES IN ENGINEERING AND EXACT SCIENCES 5, no. 1 (April 5, 2024): 974–87. http://dx.doi.org/10.54021/seesv5n1-051.
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In the area of high power drives, double star synchronous machines are an interesting choice compared to conventional synchronous machines, due to the relatively low torque ripple created. In this paper, direct torque control (DTC) of double star permanent magnet synchronous machine (DS-PMSM) using artificial neural networks (ANN) is proposed. MATLAB/Simulink results show the comparison between direct torque control (DTC) and direct torque control using artificial neural networks (ANN). The analysis of the results shows good performance for speed, small torque and flow ripple when using the artificial neural network (ANN) strategy.
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Liu, Ji Zhu, Xiao Hui Yu, Shao Hua Wang, and Ming Chong Sun. "Study on Permanent Magnet Demagnetization Characteristics in Permanent Magnet Synchronous Machines." Advanced Materials Research 211-212 (February 2011): 127–31. http://dx.doi.org/10.4028/www.scientific.net/amr.211-212.127.
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When Permanent Magnet Synchronous Machines (PMSM) working with rated load or overload, stator iron loss and copper loss, bearings friction loss, permanent magnet (PM) eddy-current all will cause PM temperature rise. In this condition, the PM is affected by the temperature and the stator of the reverse magnetic field generated prone to arouse demagnetization phenomenon, it will directly affect the performance of permanent magnet machines. Previous calculation method which used magnetic circuit method to analyze PM demagnetization characteristics cannot reflect the actual working condition of PM. Firstly, the calculation formula of PM thermal stability is deduced in this paper. Secondly, demagnetization characteristics are analyzed based on FEM, which can reflect the actual working condition of PM more accurately. This paper providing reference basis for optimum electromagnetic design, PM selection and optimum PM design.
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Wang, Keyi, and Heyun Lin. "Modular Permanent Magnet Synchronous Machine with Low Space Harmonic Content." Energies 13, no. 15 (July 31, 2020): 3924. http://dx.doi.org/10.3390/en13153924.
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Modularity technique is desirable in large permanent magnet synchronous machines (PMSMs) because it facilitates manufacture, assembly, and maintenance. Although the PMSMs with fractional-slot concentrated windings (FSCWs) allow their stators to be modularized, they usually suffer from high nonworking space harmonic content. The PMSMs with various reported two-slot pitch windings (TSPWs) show much lower nonworking space harmonic content, but they do not support stator modularity. This paper proposes a modular PMSM with a special dual three-phase (DTP) TSPW, which exhibits quite low nonworking space harmonic content. First, the topology of the proposed machine is described in detail. Then, the mechanism of reducing the nonworking space harmonic content of the machine is expounded through winding magnetomotive force (MMF) analysis. Finally, the electromagnetic characteristics of a specific proposed modular PMSM and a conventional modular PMSM with DTP-FSCW are compared by finite element method (FEM), in terms of electromotive force (EMF), armature reaction field, torque performance, efficiency and power factor. The FEM results demonstrate that the proposed machine can realize low space harmonic content while retaining stator modularity.
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Rosero García, Javier, José Luis Romeral, and Esteban Rosero García. "Detecting eccentricity faults in a PMSM in non-stationary conditions." Ingeniería e Investigación 32, no. 1 (January 1, 2012): 5–10. http://dx.doi.org/10.15446/ing.investig.v32n1.28512.
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Permanent magnet alternating current machines are being widely used in applications demanding high and rugged performance, such as industrial automation and the aerospace and automotive industries. This paper presents a study of a permanent magnet synchronous machine (PMSM) running in eccentricity; these machines' condition monitoring and fault detection would provide added value and they are also assuming growing importance. This paper investigates the effect of eccentricity faults on PMSM motors' current spectrum with a view to developing an effective condition-monitoring scheme using two-dimensional (2-D) finite element analysis (FEA). Stator current induced harmonics were investigated for fault conditions and advanced signal analysis involved continuous and discrete wavelet transforms. Simulation and experimental results are presented to substantiate that the proposed method worked over a wide speed range for motor operation and that it provided an effective tool for diagnosing PMSM operating condition.
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de la Cruz, Javier, Juan M. Ramirez, and Luis Leyva. "Voltage THD Improvement for an Outer Rotor Permanent Magnet Synchronous Machine." International Journal of Emerging Electric Power Systems 14, no. 5 (August 24, 2013): 459–65. http://dx.doi.org/10.1515/ijeeps-2013-0072.
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Abstract This article deals with the design of an outer rotor Permanent Magnet Synchronous Machines (PMSM) driven by wind turbines. The Voltage Total Harmonic Distortion (VTHD) is especially addressed, under design parameters’ handling, i.e., the geometry of the stator, the polar arc percentage, the air gap, the skew angle in rotor poles, the pole length and the core steel class. Seventy-six cases are simulated and the results provide information useful for designing this kind of machines. The study is conducted on a 5 kW PMSM.
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Wang, Weinan, Lingfang Fu, Shuo Wang, Jian Wei, Yiqi Liu, Liangkuan Zhu, and Mingfei Ban. "Magnetic Pole Equivalence and Performance Analyses of Multi-Layer Flux-Barrier Combined-Pole Permanent-Magnet Synchronous Machines Used for Electric Vehicles." Energies 16, no. 11 (June 2, 2023): 4502. http://dx.doi.org/10.3390/en16114502.
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Multi-layer flux-barrier combined-pole permanent-magnet synchronous machines (MLFB-CP-PMSMs) are especially suitable for machines used in electrical vehicles (EVs), as they represent a tradeoff between electromagnetic performance and the consumption of high-priced rare-earth permanent magnets (PM). In this paper, magnetic pole equivalence and performance analyses of the MLFB-CP-PMSM are investigated. Firstly, three types of PM arrangements of combined poles are introduced, namely, parallel, series and series–parallel. Then, the magnetic circuit model and magnetic pole equivalence principle of MLFB-CP-PMSMs with different PM arrangements are analyzed. After that, the accuracy of the equivalence method is studied by comparing the machine electromagnetic performance before and after equivalence. Finally, the MLFB-CP-PMSM’s performance, including the loss, efficiency and electromagnetic torque, is analyzed. The results prove that the MLFB-CP-PMSM has the advantage of high efficiency, and the equivalence method can retain precision when the MLFB-CP-PMSM armature reaction degree varies.
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Dambrauskas, Karolis, Jonas Vanagas, Tomas Zimnickas, Artūras Kalvaitis, and Mindaugas Ažubalis. "A Method for Efficiency Determination of Permanent Magnet Synchronous Motor." Energies 13, no. 4 (February 24, 2020): 1004. http://dx.doi.org/10.3390/en13041004.
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The utilization rate of permanent magnet synchronous motors (PMSM) is increasing in the industry today. Due to this fact, the high efficiency ratio of PMSMs has reached IE5 premium class efficiency. Therefore, the efficiency coefficient of the PMSM varies from 92% to 97%. As a result, this type of motor is replacing traditional asynchronous motor by falling into efficiency classes of IE1, IE2, IE3, and IE4, which range from 75% to 92% in the industry. Thus, the object of the research was to develop a method to determine the efficiency of permanent magnet synchronous motor applications in order to identify and verify the variating parameters. In this study, an innovative and safe method of PMSM testing when the nominal parameters of the motor are unknown was presented through research. Also, the comparison of PMSM oscillograms with different types of load types and phase shift oscillograms, generated using operation amplifier, were analyzed and is scrutinized. During the design process, the PMSM was projected for the IE5 premium efficiency class. However, after production, the PMSM sometimes does not match the nameplate parameters, which are declared by the factory. As a result, during the testing procedures, the PMSM nameplate parameters did not match the projected parameters. Facing the problem of the projected and tested efficiency mismatch, the PMSM highest efficiency determination experiments were performed in a laboratory in order to prove the highest efficiency of the PMSM. The results showed different PMSM input parameters. Furthermore, the experimental results of the PMSM testing were confirmed with electrical machines theory, and simulation results were performed with electrical circuits. The theory of PMSM operating in different values of input voltage is represented in graphical abstract.
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Khitrov, Andrei, and Alexander Khitrov. "Investigation of permanent magnet synchronous machine with recuperation block." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 1 (June 16, 2015): 53. http://dx.doi.org/10.17770/etr2015vol1.216.
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<p>permanent magnet synchronous machines (motors) (PMSM) are getting increasingly involved in electrical engineering and electric power sector. The possible application for PMSM is autonomous decentralized low-power source which requires electric starter-generator.</p><p>Structure designing electric starter-generator for the autonomous cogeneration plant based on the rotary-vane external combustion vehicle (RVECE) is mostly consists of designing electric energy generating system. But the designing and investigating system starting operating modes is also of interest.</p><p>The paper considers structures of the starter-generator for autonomous low-power sources based on RVECE, the test stand composition and the experiment results.<strong></strong></p>
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Ahma, Muneeb, Lakshmikant Bopche, Virendra Umale, and Saurabh K. Singh. "Examination of Permanent Magnet Synchronous Motor." International Journal of Engineering and Advanced Technology 8, no. 6s (September 6, 2019): 1095–100. http://dx.doi.org/10.35940/ijeat.f1214.0886s19.
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This paper focus on various loading conditions onthe Permanent Magnet Synchronous Motor and its application using field oriented control technique. Constant torqueapplication irrespective of speed isalso presented. This technique helps in lift and belt conveyors handling constant weight of material per unit time, in pumping and compressing and electric locos. Results of simulation shows that proposed system has high acceleration and deceleration rate with vector control,overall quick and dynamic response as well as excellent controlling ability. The vector control is a excellent technology for analysis and design of PMSM drive system. It provides designing and debugging for practical drive system. Modeling and different kinds of Permanent Magnet Synchronous Machines are studied and Simulation is carried out in Matlab and performance is studied at different operating conditions.
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Kim, Hak Jung, Sooyoung Cho, Gang Seok Lee, Hyung-Kwan Jang, Ye Jun Oh, and Ju Lee. "A Study on the Design of an Outer Rotor and Spoke Type PMSM for Improving Power Density." Open Electrical & Electronic Engineering Journal 12, no. 1 (August 31, 2018): 63–74. http://dx.doi.org/10.2174/1874129001812010063.
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Object: This paper proposes an outer rotor and spoke-type permanent magnet synchronous motor (outer rotor spoke-type PMSM) to increase the power density compared to the inner rotor spoke-type permanent magnet synchronous motor(inner rotor spoke-type PMSM) used in washing machines. Method: In order to investigate the output characteristics of the Outer Rotor Spoke-type PMSM, comparison and analysis were conducted on three models of 16-poles/9-slots, 20-pole/9-slots and 22-poles/9-slots. Compare models were conducted with the limited condition which applies the same current density, phase voltage limit, and stator. The final model was optimized based on the model with the best output characteristics among three compare models. Conclusion: Finally, output characteristics are compared between compare models and the final model.
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Liu, Yingpei, Tao Gao, and Guo Li. "Research on an Improved Method for Permanent Magnet Synchronous Motor." Journal of Sensors 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/816421.
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In permanent magnet synchronous motor (PMSM) traditional vector control system, PI regulator is used in the speed loop, but it has some defects. An improved method of PMSM vector control is proposed in the paper. The active-disturbance rejection control (ADRC) speed regulator is designed with the input signals of given speed and real speed and the output of given stator currentqcoordinate component. Then, in order to optimize ADRC controller, the least squares support vector machines (LSSVM) optimal regression model is derived and successfully embedded in the ADRC controller. ADRC observation precision and dynamic response of the system are improved. The load disturbance effect on the system is reduced to a large extent. The system anti-interference ability is further improved. Finally, the current sensor CSNE151-100 is selected to sample PMSM stator currents. The voltage sensor JLBV1 is used to sample the stator voltage. The rotor speed of PMSM is measured by mechanical speed sensor, the type of which is BENTLY 330500. Experimental platform is constructed to verify the effectiveness of the proposed method.
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Zheng, Ping, Yi Sui, Peng Fei Wang, Fan Wu, and Shu Qing Zhang. "Optimal Design of a Five-Phase Outer-Rotor Permanent-Magnet Synchronous Machine." Applied Mechanics and Materials 416-417 (September 2013): 127–32. http://dx.doi.org/10.4028/www.scientific.net/amm.416-417.127.
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With the increasing requirements for driving comfort and reliability of electric vehicles, the multi-phase fault-tolerant permanent-magnet synchronous machines (PMSMs) have drawn more and more attention. A 40-slot/42-pole five-phase outer-rotor PMSM is investigated. The electromagnetic structure is designed, and the winding configurations, pole-arc coefficient, magnetization direction, and the structure of slot notch are optimized to obtain better machine performance.
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Horváth, Péter István, and Károly Jálics. "Potential future for SRM and SyncRM in automotive applications." Design of Machines and Structures 12, no. 1 (2022): 26–37. http://dx.doi.org/10.32972/dms.2022.003.
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The global warming is affecting the life of all of us. Several sectors are contributing to the greenhouse emission. One of the larger contributors is the transportation, in which the road transport accounts for the CO2 emission with a significant percentage. In order to reduce the CO2 emission vehicles are becoming hybridized, electrified. Currently in the electrical vehicles the Permanent Magnet Synchronous Machines (PMSM) outweigh other types of electric motors. The application of the electric machines with rear-earth material is becoming more and more difficult, and costly. Also, the technological improvements of other types of electric machines make them potential candidates to replace the PMSM. As a potential alternative the Switched Reluctance (SRM) and the Synchronous Reluctance Machines (SyncRM) can be considered. The application of such electric machines without permanent magnet would further contribute to the reduction of the greenhouse emissions considering the well-to-wheel cycle. The goal of the following review is to summarize the sectors that have major impact on the CO2 emission, summarize the current trends followed in order to reduce the CO2 emission in the road transport sector, review why the currently preferred PMSM electric motors might have limitations in automotive applications in the future, and review why and how the SRM and SyncRM could be alternative solutions for the PMSM, which is finally summarized in a datum method based comparative evaluation.
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Tang, Yongming, Shouguang Sun, Wenfei Yu, and Wei Hua. "Thermal Analysis of Water-Cooling Permanent Magnet Synchronous Machine for Port Traction Electric Vehicle." Electronics 12, no. 3 (February 1, 2023): 734. http://dx.doi.org/10.3390/electronics12030734.
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To further increase the torque/power density of a permanent magnet synchronous machine (PMSM) employed for a port traction electric vehicle, improving the thermal dissipation capacity of the cooling system used in the PMSM has become more and more important. This paper focuses on the thermal analysis of a water-cooling 200 kW PMSM for a port traction electric vehicle. First, the size parameters of the machine and the thermal property parameters of the materials used for each component are given. Based on the heat transfer theory, a fast evaluation method for a transient temperature rise in the water-cooling machine under multiple operating conditions is proposed. A lumped parameter thermal network (LPTN) model is established, and the temperature distributions of the machine at different operating conditions are analyzed. Second, under the same conditions, based on computational fluid dynamics (CFD), a three-dimensional (3D) CFD model is constructed. The influence of different cooling structures on temperature distribution is studied. The validity of the proposed fast evaluation method for a transient temperature rise in water-cooling machines under multiple operating conditions is verified. Finally, the results of the CFD and LPTN calculation are verified by experiments; the maximum temperature deviation of the rated speed/rated power operating condition is 8.5%. This paper provides a reference for the design and analysis of port traction electric vehicle machines.
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T. Bahar, Saif, and Riyadh Ghanem Omar. "PERMANENT MAGNET SYNCHRONOUS MOTOR TORQUE RIPPLE REDUCTION USING PREDICTIVE TORQUE CONTROL." Journal of Engineering and Sustainable Development 27, no. 3 (May 1, 2023): 394–406. http://dx.doi.org/10.31272/jeasd.27.3.9.
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The control of (PMSM) is the subject of this study and the torque ripple reduction in (PMSM) is the main goal of this work. Torque and flux are controlled using a predictive model and Vector Control. Because it is commonly employed in regulating electric motors. Space vector control and predictive control are two (PMSM) control approaches used in this study. Predictive control was determined to be more effective in terms of response and action after a Matlab simulation of the two approaches. MPC covers all potential switching states that decrease actual torque and flux ripples as well as Total Harmonic Distortion. The benefits of MPC include simple principles, an easy-to-use console, and the ability to implement limits quickly. However, there are some drawbacks to this technique, including the requirement for bigger accounts and faster machines. The fundamental principles of the control techniques discussed are provided A (PMSM) powered by a two-level power converter is then used to simulate the control approaches. Their performance in comparison is based on the obtained results.
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Beser, Esra Kandemir. "Electrical equivalent circuit for modelling permanent magnet synchronous motors." Journal of Electrical Engineering 72, no. 3 (June 1, 2021): 176–83. http://dx.doi.org/10.2478/jee-2021-0024.
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Abstract In permanent magnet synchronous motor (PMSM) models, only the stator part is given as an electrical circuit and mechanical equations are used for modelling the mechanical part of the machine. In this study, electrical equivalents of mechanical equations are also obtained and mechanical parameters of a PMSM are expressed as an electrical circuit element. In this way, an exact electrical equivalent circuit is proposed in which both the stator and the mechanical part can be modelled as an electrical circuit for the PMSMs dynamic model. Although PMSM model includes mechanical parameters and variables, the complete model is expressed only in electrical elements and variables. The proposed PMSM circuit was simulated for different load torques in the circuit simulation program. Simulation results show that the proposed circuit operates like a PMSM. Simulation results were verified by another method in the form of solution of the differential equations that constitute the mathematical model of PMSM. Due to the proposed circuit that enables the conversion of mechanical parameters into electrical parameters, PMSM can be modelled and simulated as an electrical circuit with completely electrical elements in a circuit simulation program.
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Aziz, R., G. J. Atkinson, and S. Salimin. "Thermal Modelling for Permanent Magnet Synchronous Machine (PMSM)." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 4 (December 1, 2017): 1903. http://dx.doi.org/10.11591/ijpeds.v8.i4.pp1903-1912.
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<span>It is important to predict the temperature in some of the essential parts in machine design to prevent the machine from any damage. Most researchers usually not given much attention on thermal analysis during machine design as much as the electromagnet design. Therefore, in this study, two types of thermal modelling were proposed to predict the temperature of a permanent magnet synchronous machine (PMSM). Infolytica ThermNet software has been used since the software is related to Infolytica Magnet and the losses obtained from the electromagnetic field analysis are used as the heat source in the thermal analysis. Comparison has been done between the predicted temperature from lumped parameter model and finite element analysis. The results also will be validated by using experimental setup. Since Infolytica Magnet has been used to analyse the electromagnetic output therefore finite element analysis model is the better choice.</span>
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Msaddek, Hejra, Ali Mansouri, and Trabelsi Hafedh. "Optimization of In-Wheel Permanent Magnet Synchronous Motor for Electric Car." International Journal of Energy Optimization and Engineering 4, no. 3 (July 2015): 1–17. http://dx.doi.org/10.4018/ijeoe.2015070101.
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The objective of this work is to find the optimal geometric parameters for the design of permanent magnet synchronous machines (PMSM) with inversed structure (outer rotor) for electric vehicles applications. Firstly, the machine model is presented with a special attention given to the calculation of the mass and engine efficiency. A multi objective optimization based on the genetic algorithm is then implemented. It will determine the parameters values that optimize the chosen criteria while respecting the specifications: to minimizing the total mass and maximizing the machine efficiency. Finally, 2D steady-state finite element analysis is used for to verify the results given by the optimization method.
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Lee, Sung-hyun, Noman Baloch, and Byung-il Kwon. "Design and analysis of a double consequent pole changing vernier machine." International Journal of Applied Electromagnetics and Mechanics 64, no. 1-4 (December 10, 2020): 941–49. http://dx.doi.org/10.3233/jae-209408.
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This paper proposes a double consequent pole changing vernier machine (DCPCVM) which adopts double consequent pole and flux modulation configuration. The proposed machine combines a vernier machine and a permanent magnet synchronous machine (PMSM) in a single topology. Therefore, the advantages of both machines can be realized in a single topology. The proposed machine provides high torque at low speed while operating in vernier mode whereas it operates in PMSM mode at high speed to avoid the disadvantages of vernier machines at high speeds such as high core losses. Parametric analysis of the proposed machine is performed to show the effect of the main variables on the electromagnetic characteristics of the machine. A finite element method (FEM) analysis is conducted, and meaningful conclusions are drawn.
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Krichen, Manel, Elhoussin Elbouchikhi, Naourez Benhadj, Mohamed Chaieb, Mohamed Benbouzid, and Rafik Neji. "Motor Current Signature Analysis-Based Permanent Magnet Synchronous Motor Demagnetization Characterization and Detection." Machines 8, no. 3 (June 29, 2020): 35. http://dx.doi.org/10.3390/machines8030035.
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Neodymium-boron (NdFeB) permanent magnets (PMs) have been widely studied in the past years since they became the material of choice in permanent magnet synchronous machines (PMSMs). Although NdFeB PMs have a better energy density than other types of magnets and are cost-effective, their magnetization is very sensitive to the PMSM operating conditions, in particular temperature, where the irreversible demagnetization degree increases over time. Therefore, it is important to characterize and diagnose demagnetization at an early stage. In this context, this paper proposes a two-step analysis study dealing with both uniform and partial demagnetization. A 2D finite element method-based (FEM) approach is used for demagnetization characterization, and then a PMSM motor current signature analysis (MCSA) approach, based on fast Fourier transform (FFT), is considered where fault cases harmonics are considered as faults indices to detect demagnetization. In some situations, the proposed two-step approach achieved results that clearly allow distinguishing and characterizing demagnetization. Indeed, a local demagnetization introduces specific sub-harmonics while a uniform demagnetization leads to the current amplitude increase for a given torque.
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Rahman, Abdur, Rukmi Dutta, Guoyu Chu, Dan Xiao, Vinay K. Thippiripati, and Muhammed F. Rahman. "Open-Winding Permanent Magnet Synchronous Generator for Renewable Energy—A Review." Energies 16, no. 14 (July 10, 2023): 5268. http://dx.doi.org/10.3390/en16145268.
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The open-winding permanent magnet synchronous machines (OW-PMSMs) have recently been gaining more attention because of their fault-tolerant capability and power quality comparable to a 3-level converter-driven system. This paper reviews the common configurations of OW-PMSM when used as a generator, highlighting its shortcomings and benefits. The OW-PMSM with a common DC bus was found to be a promising direct-drive generator solution for wind energy conversion (WEC) systems considering fault tolerance, DC bus utilization, and power quality when appropriate control algorithms are in place. The presence of the zero-sequence current is the key disadvantage of the common DC bus configuration. The review highlights the algorithms that have been proposed to suppress the zero-sequence current of the OW-PMSM under healthy and various fault conditions, especially the open-circuit fault of semiconductor switch. Shutting down remotely located wind turbines because of faults, until they can be repaired, may not make economic sense. The OW-PMSM can offer the opportunity, to run a WEC system even under fault conditions albeit with low output power. This paper will assess the literature gaps in the existing control techniques that prevent the extension via a comprehensive review.
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Petushkov, Mikhail Yu, and Sergey S. Kholodilov. "DEFINITION OF A DIAGNOSTIC SIGNAL FOR MONITORING PERMANENT MAGNET SYNCHRONOUS MOTORS." Electrical and data processing facilities and systems 19, no. 4 (2023): 95–107. http://dx.doi.org/10.17122/1999-5458-2023-19-4-95-107.
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Relevance Nowadays, it is possible to achieve a significant increase in the technical and economic indicators of enterprises by improving the reliability of electrical and mechanical equipment. In this case, the time between current and overhaul repairs is increased and operating costs and, together with them, material and other resources are significantly reduced. Metallurgical production is the most expensive in terms of electrical consumption and a significant number of electric drives are concentrated there. For more than a hundred years, asynchronous electric machines have occupied key positions in regulated AC electric drives. Along with them, new types of electric machines have been actively developed in recent decades, which structurally in the active part do not contain windings on the rotor, the rotor is asymmetrical in magnetic relation, the stator can have one or two windings. Such machines include synchronous reactive and inductor electromechanical converters. All studies are of a private nature and do not cover the whole class of electric machines as a whole. There are no unified analytical dependencies for electromagnetic torque, active and reactive powers, power factor, methods of engineering calculations of machines, optimization methods, unified approaches to the synthesis of control actions on stator windings, calculation of losses, the peculiarities of synthesis of such machines for specific production mechanisms are not considered, taking into account the nature of load and speed diagrams and modes of operation in an extended range of speeds and load torques. In connection with the above-mentioned, a comprehensive study of permanent magnet synchronous motor (PMSM) is relevant, and there is a need to determine the diagnostic signs of faults both incipient and manifested. Aim of research The article is devoted to the issues of obtaining diagnostic information in the generator mode of PMSM. It is shown that the generator mode is an effective mode for obtaining a diagnostic signal, allowing to fully implement the methods of mathematical analysis of signals, without introducing errors in the form of spectral components from the work of converters. Research methods The methods of theoretical and experimental research were applied in the work. To conduct theoretical studies used software packages Excel and MathCad; software package MatLab for wavelet analysis and Fourier analysis; software package Elcut to develop a computer model and simulation modeling; the basics of wavelet theory. Results The generator mode is an effective mode of obtaining the diagnostic signal, which allows to fully implement the methods of mathematical analysis of signals without introducing errors in the form of spectral components, which inevitably occur during the operation of converters of any type. The use of the generator mode in PMSM diagnostic systems allows obtaining a much cleaner diagnostic signal, which increases the diagnostic accuracy, reduces the number of false diagnoses and minimizes the masking effect. This mode does not require any changes in the structure of the control system, because during the operation of any PMSM, one way or another, when the speed is reduced or stopped, the motors briefly operates in generator mode.
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Klute, Felix, and Torben Jonsky. "Third harmonic current injection into highly saturated multi-phase machines." Archives of Electrical Engineering 66, no. 1 (March 1, 2017): 179–87. http://dx.doi.org/10.1515/aee-2017-0013.
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Abstract One advantage of multi-phase machines is the possibility to use the third harmonic of the rotor flux for additional torque generation. This effect can be maximised for Permanent Magnet Synchronous Machines (PMSM) with a high third harmonic content in the magnet flux. This paper discusses the effects of third harmonic current injection (THCI) on a five-phase PMSM with a conventional magnet shape depending on saturation. The effects of THCI in five-phase machines are shown in a 2D FEM model in Ansys Maxwell verified by measurement results. The results of the FEM model are analytically analysed using the Park model. It is shown in simulation and measurement that the torque improvement by THCI increases significantly with the saturation level, as the amplitude of the third harmonic flux linkage increases with the saturation level but the phase shift of the rotor flux linkage has to be considered. This paper gives a detailed analysis of saturation mechanisms of PMSM, which can be used for optimizing the efficiency in operating points of high saturations, without using special magnet shapes.
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Ali, Machrus, and Miftachul Ulum. "Perbandingan Optimasi Kontroler Putaran Motor Permanent Magnet Syschronous Machine." Jurnal FORTECH 1, no. 1 (February 24, 2020): 12–19. http://dx.doi.org/10.32492/fortech.v1i1.218.
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Low torque low owned by PMSM (Permanent Magnet Synchronous Machine) required an excellent control model. PMSM uses the principle of faraday's law by rotating magnets in the coil by using other energy sources. When a magnet moves in a coil or vice versa. The engine rotation will change the magnetic force flux on the coil and penetrate perpendicularly to the coil so that a potential difference arises between the ends of the coil. The potential difference is caused by changes in magnetic flux. in order to get the best control method, a good speed control model is needed. In this study comparing PMSM speed control using PID, Fuzzy Logic Controller (LFC), and Adaptive Neuro-Fuzzy Inference System (ANFIS). The simulation results show that the best model on the ANFIS controller that is closest to Speed Reff (300 rpm) is that ANFIS obtains the rotational profile with the smallest undershot, the fastest steady state, the best output current profile, the best torque profile, and the best voltage profile. The results of this study will be followed by the use of other Artificial Intelligence.
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Djelloul Khedda, Zakarya, Kamel Boughrara, Frédéric Dubas, Baocheng Guo, and El Hadj Ailam. "Two-dimensional steady-state thermal analytical model of permanent-magnet synchronous machines operating in generator mode." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 41, no. 1 (November 15, 2021): 125–54. http://dx.doi.org/10.1108/compel-07-2021-0226.
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Purpose Thermal analysis of electrical machines is usually performed by using numerical methods or lumped parameter thermal networks depending on the desired accuracy. The analytical prediction of temperature distribution based on the formal resolution of thermal partial differential equations (PDEs) by the harmonic modeling technique (or the Fourier method) is uncommon in electrical machines. Therefore, this paper aims to present a two-dimensional (2D) analytical model of steady-state temperature distribution for permanent-magnet (PM) synchronous machines (PMSM) operating in generator mode. Design/methodology/approach The proposed model is based on the multi-layer models with the convolution theorem (i.e. Cauchy’s product theorem) by using complex Fourier’s series and the separation of variables method. This technique takes into the different thermal conductivities of the machine parts. The heat sources are determined by calculating the different power losses in the PMSM with the finite-element method (FEM). Findings To validate the proposed analytical model, the analytical results are compared with those obtained by thermal FEM. The comparisons show good results of the proposed model. Originality/value A new 2D analytical model based on the PDE in steady-state for full prediction of temperature distribution in the PMSM takes into account the heat transfer by conduction, convection and radiation.
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Prakht, Vladimir, Vladimir Dmitrievskii, Vadim Kazakbaev, and Ekaterina Andriushchenko. "Comparison of Flux-Switching and Interior Permanent Magnet Synchronous Generators for Direct-Driven Wind Applications Based on Nelder–Mead Optimal Designing." Mathematics 9, no. 7 (March 29, 2021): 732. http://dx.doi.org/10.3390/math9070732.
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The permanent magnet flux-switching machine (PMFSM) is one of the most promising machines with magnets inserted into the stator. To determine in which applications the use of PMFSM is promising, it is essential to compare the PMFSM with machines of other types. This study provides a theoretical comparison of the PMFSM with a conventional interior permanent magnet synchronous machine (IPMSM) in the gearless generator of a low-power wind turbine (332 rpm, 51.4 Nm). To provide a fair comparison, both machines are optimized using the Nelder–Mead algorithm. The minimized optimization objectives are the required power of frequency converter, cost of active materials, torque ripple and losses of a generator averaged over the working profile of the wind turbine. In order to reduce the computational time, the substituting profile method is applied. Based on the results of the calculations, the advantages and disadvantages of the considered machines were revealed: the IPMSM has significantly lower losses and higher efficiency than the PMFSM, and the PMFSM requires much less rare-earth magnets and copper and is, therefore, cheaper in mass production.
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Ling, Jeeng Min, and Tajuddin Nur. "Study of Magnetics Performance of Inset Permanent Magnet Synchronous Machine (Inset - PMSM) Using Finite Element Method." Applied Mechanics and Materials 260-261 (December 2012): 554–58. http://dx.doi.org/10.4028/www.scientific.net/amm.260-261.554.
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Inset Permanent Magnet synchronous machine (Inset - PMSM) is a specific kind of permanent magnet synchronous machine. The magnetic flux in air gap of electrical machine is one of the important parameters and it imply to the electric or mechanical energy of machine. Using radial pole structure, the characteristics of magnetic field in air gap of an Inset PMSM with 6 poles and 36 slots are simulated. In this paper, we simulated and observed the influence of axial channel rotor core of Inset-PMSM to the value/quantity of magnetic flux in air gap. Magnetic flux quality is also considered in this simulation. The simulations were compared with the conventional rotor structure. The flux density per pole in the air gap was measured with three different angles, 00, 250 and 400.
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Massoum, Ahmed, Abdelkader Meroufel, Patrice Wira, and Mohammed Fellah. "Fuzzy Control of the Permanent Magnet Synchronous Machine Singularly Perturbed Fed By a Three Level Inverter." Journal of Electrical Engineering 63, no. 3 (May 1, 2012): 186–90. http://dx.doi.org/10.2478/v10187-012-0027-5.
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Fuzzy Control of the Permanent Magnet Synchronous Machine Singularly Perturbed Fed By a Three Level InverterIn this paper, we present the control technique based on the singular perturbation technique controlled by a fuzzy regulator applied to the permanent magnet synchronous machine (PMSM). This technique applied to the PMSM conducts to a separation of the variables into disjoined subset or two separated models: one having a slow dynamics, and the other a fast dynamics. To ensure certain robustness to the decoupled control system based on these techniques, the control speed and theIdcurrent is carried out by fuzzy regulators. A qualitative analysis of the principal variables evolution describing the behavior of the global system (PMSM-Inverter with MLI-Control) and its robustness is developed by several tests of digital simulation in last stage.
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Gaiceanu, Marian, and Emil Rosu. "A Complete Optimal Control Solution for Permanent Magnet Synchronous Motors." Applied Mechanics and Materials 260-261 (December 2012): 449–53. http://dx.doi.org/10.4028/www.scientific.net/amm.260-261.449.
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In this paper a voltage control strategy based on the optimal control theory, for isotropic rotor permanent magnet synchronous motor (PMSM) drives, is proposed. The complete optimal control of the three phase permanent magnet synchronous machine (PMSM) consists of three components: the state feedback, the feed forward compensation of the load torque and the reference to achieve the desired state. The control assures a smooth dynamic response, in order to achieve the desired state in steady state, the fast compensation of the load torque, and the energy minimization. The obtained solution by integrating the matrix Riccati differential equation (MRDE) is orientated towards the numerical implementation (by using a zero order hold) and it is computed on-line. The optimal control strategy is applied to PMSM drives and verified by simulations.
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Jędryczka, Cezary, Dawid Danielczyk, and Wojciech Szeląg. "Torque Ripple Minimization of the Permanent Magnet Synchronous Machine by Modulation of the Phase Currents." Sensors 20, no. 8 (April 23, 2020): 2406. http://dx.doi.org/10.3390/s20082406.
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This paper deals with the torque ripple minimization method based on the modulation of the phase currents of the permanent-magnet synchronous motor (PMSM) drive. The shape of the supply current waveforms reducing the torque ripple of the machine considered was determined on the basis of finite element analysis (FEA). In the proposed approach, the machine is supplied by a six-leg inverter in order to allow for the injection of zero sequence current harmonics. Two test PMSMs with fractional-slot concentrated windings (FSCW) and surface-mounted permanent magnets (SPMs) have been examined as a case study problem. Wide-range fractional analyses were performed using developed numerical models of the electromagnetic field distribution in the considered machines. The results obtained show that the level of torque ripple in FSCW PMSMs can be effectively reduced by the modulation of the phase currents under the six-leg inverter supply.
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Karnavas, Yannis L., Ioannis D. Chasiotis, and Emmanouil L. Peponakis. "Permanent Magnet Synchronous Motor Design using Grey Wolf Optimizer Algorithm." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 3 (June 1, 2016): 1353. http://dx.doi.org/10.11591/ijece.v6i3.9771.
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Common high-torque low-speed motor drive schemes combine an induction motor coupled to the load by a mechanical subsystem which consists of gears, belt/pulleys or camshafts. Consequently, these setups present an inherent drawback regarding to maintenance needs, high costs and overall system deficiency. Thus, the replacement of such a conventional drive with a properly designed low speed permanent magnet synchronous motor (PMSM) directly coupled to the load, provides an attractive alternative. In this context, the paper deals with the design evaluation of a 5kW/50rpm radial flux PMSM with surface-mounted permanent magnets and inner rotor topology. Since the main goal is the minimization of the machine's total losses and therefore the maximization of its efficiency, the design is conducted by solving an optimization problem. For this purpose, the application of a new meta-heuristic optimization method called “<em>Grey Wolf Optimizer</em>” is studied. The effectiveness of the method in finding appropriate PMSM designs is then evaluated. The obtained results of the applied method reveal satisfactorily enhanced design solutions and performance when compared with those of other optimization techniques.
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Karnavas, Yannis L., Ioannis D. Chasiotis, and Emmanouil L. Peponakis. "Permanent Magnet Synchronous Motor Design using Grey Wolf Optimizer Algorithm." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 3 (June 1, 2016): 1353. http://dx.doi.org/10.11591/ijece.v6i3.pp1353-1362.
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Common high-torque low-speed motor drive schemes combine an induction motor coupled to the load by a mechanical subsystem which consists of gears, belt/pulleys or camshafts. Consequently, these setups present an inherent drawback regarding to maintenance needs, high costs and overall system deficiency. Thus, the replacement of such a conventional drive with a properly designed low speed permanent magnet synchronous motor (PMSM) directly coupled to the load, provides an attractive alternative. In this context, the paper deals with the design evaluation of a 5kW/50rpm radial flux PMSM with surface-mounted permanent magnets and inner rotor topology. Since the main goal is the minimization of the machine's total losses and therefore the maximization of its efficiency, the design is conducted by solving an optimization problem. For this purpose, the application of a new meta-heuristic optimization method called “<em>Grey Wolf Optimizer</em>” is studied. The effectiveness of the method in finding appropriate PMSM designs is then evaluated. The obtained results of the applied method reveal satisfactorily enhanced design solutions and performance when compared with those of other optimization techniques.
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Abassi, Moez, Oussama Saadaoui, Amor Khlaief, Abdelkader Chaari, and Mohamed Boussak. "PMSM DTC Drive System Fed by a Fault-Tolerant Inverter." Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering) 12, no. 1 (January 10, 2019): 61–67. http://dx.doi.org/10.2174/2352096511666180501125421.
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Background: In this paper, experimentation fault-tolerant control for permanent magnet synchronous motor drive system using the direct torque control technique is presented. Methods: Synchronous machine drive system requires uninterrupted and more secure conditions during operations. Results: Therefore the diagnostic of voltage source inverter and synchronous motor faults are needed for improving system availability. Conclusion: This article aims to propose an accurate open-phase fault detection and fault-tolerant inverter of a permanent magnet synchronous motor using direct torque control technique. Experimental implementation is carried out on powerful dSpace DS1104. The validity of the proposed method has been experimentally verified.
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Sekerák, Peter, Valéria Hrabovcová, Juha Pyrhönen, Lukáš Kalamen, Pavol Rafajdus, and Matúš Onufer. "Ferrites and Different Winding Types in Permanent Magnet Synchronous Motor." Journal of Electrical Engineering 63, no. 3 (May 1, 2012): 162–70. http://dx.doi.org/10.2478/v10187-012-0024-8.
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Ferrites and Different Winding Types in Permanent Magnet Synchronous MotorThis paper deals with design of permanent magnet synchronous machines with ferrites. The ferrites became popular due to their low cost and cost increasing of NdFeB. The progress in ferrite properties in the last decade allows the use of ferrites in high power applications. Three models of ferrite motors are presented. It is shown that also the type of stator winding and the shape of the slot opening have an important effect on the PMSM properties. The first motor has a distributed winding, the second motor has concentrated, non-overlapping winding and open stator slots. The third motor has a concentrated non-overlapping winding and semi - open slots. All models are designed for the same output power and they do not have the same dimensions. The paper shows how important the design of an electric machine is for excellent motor properties or better to say how the motor properties can be improved by an appropriate design.
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Kyoung Bang, Tae, Kyung Hun Shin, Jeong In Lee, Cheol Han, Seong Kook Cho, and Jang Young Choi. "Characteristic Analysis of High-Speed Permanent Magnet Synchronous Motor." International Journal of Engineering & Technology 7, no. 3.34 (September 1, 2018): 136. http://dx.doi.org/10.14419/ijet.v7i3.34.18790.
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Background/Objectives: This paper presents characteristic analysis of High-SpeedPermanent Magnet Synchronous Machine (High-Speed PMSM) by using FEM (Finite Element Method) tools. The High-Speed PMSM need the protective tube with non-magnetic materials that protect the scattering of permanent magnet, it is necessary that analyzed about mechanical analysis.Methods/Statistical analysis: For preventing and improving, the fracture of the rotor of High-Speed PMSM, it is important that analyzed characteristic of mechanical stress, it should not be analyzed that occurred the fracture and decreased the performance, since the structure of rotor. However, structure analysis is usually performed by using FEM, which need the big amount of time consuming. Therefore, in this paper is derived the mechanical stress of rotor by using analytical method of stress.Findings: The results of the stress analysis are compared with the results of FEM analysis that validated the analytical method of stress analysis. Based on the results of the analysis, an analytical model was fabricated. Through the experiments, the presence of rotor breakage was examined and the performance was measured.Improvements/Applications: It can be applied to stress analysis and characterization of superhigh speed machine through the analysis methods presented in this paper.
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So, Albert, and Wai L. Chan. "Comprehensive model of linear PMSM-based ropeless lift for comparing control algorithms – Field-oriented control versus direct torque control." Building Services Engineering Research and Technology 41, no. 6 (January 14, 2020): 659–80. http://dx.doi.org/10.1177/0143624419899058.
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This is a further study of two previous articles of the authors. The simulation model includes saliency and almost all common imperfections of linear permanent magnet synchronous machine. Based on the same model, three types of control have been applied to drive the lift car for a typical fully loaded upward journey, namely field-oriented control, which was used in two previous articles, direct force control (conventional direct torque control on a linear machine) and a newly proposed direct speed control (a new direct torque control method that could be used in the lift industry). The performances in terms of speed accuracy during start-up and rated speed operation, power and energy consumption have been studied. The conclusion is that for such a new application in the lift industry, at this moment in time, the more conventional field-oriented control is highly recommended. Two new findings are reported. Direct speed control that involves a simpler circuitry and reasonable speed control is proposed, although there is always a small steady-state error due to the absence of a proportional–integral controller. Conventional direct torque (force) control involves continuous integration to estimate the magnetic fluxes, which is not applicable to a permanent magnet synchronous machine with saliency. A new definition to analytically estimate the magnetic flux linkages in real time is also proposed. It should be noted that field-oriented control is superior at this time. When technology continues to get advanced, direct force control and direct speed control may one day be more appropriate for linear permanent magnet synchronous machine application. The software to perform the simulation has been uploaded to the BSER&T/SAGE website. Practical application: It is generally agreed by the lift industry that the installation of multi-dimensional lifts employing linear permanent magnet synchronous machines is a clear trend in the future. This article is a follow up of two previous ones, studying the performance of three types of control for linear permanent magnet synchronous machine. Necessary equations of the machine model, imperfections, digital control loops are included. Some findings regarding the differences in performance are reported. It is hoped that this article is useful for lift manufacturers to enter this new market of vertical transportation.
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Zhao, Wei, Wen Juan Huang, and Lin Zhang. "EKF-Based Sensorless Vector Control System of Permanent Magnet Synchronous Motor." Applied Mechanics and Materials 738-739 (March 2015): 1082–85. http://dx.doi.org/10.4028/www.scientific.net/amm.738-739.1082.
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As the incomparable advantages, permanent magnetic synchronous motor (PMSM) has been used widely in servo system, numerical control machine. The paper introduces an EKF (extended Kalman filter)-based sensorless vector control system of permanent magnet synchronous motor. The rotorfield-oriented control strategy based on id=0 is selected. After expounding the principle of EKF and recursion algorithm, it derives the Kalman state equation in PMSM rest coordinate, makes a discretization processing, and constructs vector control system based on EKF estimator. The simulation model of vector control system of PMSM with MATLAB/Simulink is built and on this basis, it observes the position and speed of the motor rotor by the use of the EKF estimator. Simulation results demonstrate the EKF estimator can accurate estimates of the PMSM rotor position and speed.
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Popovici, Alexandru-Tudor, and Alexandru Onea. "Generalized Differential Mathematical Model in Stator Reference Frame for PMSM and VRSM Simulation." Bulletin of the Polytechnic Institute of Iași. Electrical Engineering, Power Engineering, Electronics Section 67, no. 4 (December 1, 2021): 43–55. http://dx.doi.org/10.2478/bipie-2021-0021.
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Abstract The paper presents the deduction of a novel decoupled form (considering the differential current quantities) of the differential mathematical model in stator reference frame, useful for numeric simulation of control approaches for PMSM (permanent magnet synchronous machines) generalized for both IPMSM and SPMSM (salient and non-salient PMSM). The model is confirmed to be equivalent to the well-known model defined in the rotor synchronous reference frame using a Matlab-Simulink implementation that is verified and validated by simulation during which the power/energy conservation is monitored and the system states’ evolution is compared to the reference model in rotor reference frame using a generator structure.
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Cui, Hong, and You Qing Gao. "Sensorless Grey Prediction Fuzzy Direct Torque Control for High-Speed Permanent Magnet Synchronous Motor." Applied Mechanics and Materials 220-223 (November 2012): 1040–43. http://dx.doi.org/10.4028/www.scientific.net/amm.220-223.1040.
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High-speed permanent magnet synchronous motor (PMSM) is more and more widely applied in high precision processing and high-performance machines. It is very important to research practical control strategy for the stability operation of the high-speed PMSM. The strategy of sensorless grey prediction fuzzy direct torque control (DTC) is proposed which is suitable for high-speed PMSM control system. The method of prediction fuzzy control based on DTC is used to gain the flux, torque and flux oriented angle through the prediction model of the motor parameters. The best control scheme is gained by fuzzy reasoning to overcome the lag on the system making the adjustment process stable and realizing accurate predictive control. Thereby, the dynamic response of the system, anti-disturbance capability and control accuracy can be improved.
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Chen, Wen Zhuo, Xiao Yu Zhang, and Xiao Mei Sui. "Simulation of Permanent Magnet Synchronous Motor Field Oriented Vector Control System." Applied Mechanics and Materials 672-674 (October 2014): 1234–37. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.1234.
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This template illustrates the control system of permanent magnet synchronous motor(PMSM) which uses field oriented vector control(field oriented vector control). PMSM is a complex, strong coupling and nonlinear system. And field oriented vector control could provide good performance as well as the PI controller setted with well parameter matching. Whereas limited by the number of voltage vector, the other control method of PMSM, direct torque control, could not satisfy accurate control when the machine running with a low speed. So modulation of the whole system is built here to realize closed-loop field oriented vector control control by keeping id=0 , and the machine model and the transformation among different coordinate system are discussed. The system is verified effective and feasible.
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Jedryczka, Cezary. "Comparative analysis of the three- and six-phase fractional slot concentrated winding permanent magnet machines." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 36, no. 3 (May 2, 2017): 811–23. http://dx.doi.org/10.1108/compel-09-2016-0431.
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Purpose The purpose of this paper is to analyse and compare the functional parameters of three- and six-phase permanent magnet synchronous motors (PMSM) with fractional-slot concentrated windings (FSCW). Design/methodology/approach The investigations are focused on the comparison of the distortions of back electromotive force (emf) and magnetomotive force (mmf) waveforms, as well as torque ripples, radial force spatial harmonics and motor performance studies. The finite element models of the test machine and a personally developed computer code have been used to calculate motor characteristics and analyse and synthesise multiphase winding layouts, respectively. Findings Compared with the traditional three-phase PMSM designs, the proposed six-phase machines are characterized by a significantly lower content of sub-harmonics in mmf waveform distribution. Moreover, the investigated six-phase machines exhibited a higher average value of electromagnetic torque, significantly lower torque ripples and a reduced value of low-order harmonics of the radial component of the electromagnetic force in the air-gap of the machine. Originality/value The analyses presented in this paper show that six-phase PMSM with FSCWs are advantageous to their counterpart three-phase machines. Specifically, they are more suited to working with multiple drives supplying a segmented winding system while simultaneously offering higher performance. This suitability to the use of a multi-drive supply for one motor offers flexibility and cost reduction while increasing the fault tolerance of a power train system.
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Elsherbiny, Hanaa, Laszlo Szamel, Mohamed Kamal Ahmed, and Mahmoud A. Elwany. "High Accuracy Modeling of Permanent Magnet Synchronous Motors Using Finite Element Analysis." Mathematics 10, no. 20 (October 19, 2022): 3880. http://dx.doi.org/10.3390/math10203880.
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Permanent magnet synchronous machines (PMSMs) have garnered increasing interest because of their advantages such as high efficiency, high power density, wide speed range, and fast dynamics. They have been employed recently in several industrial applications including robotics and electric vehicles (EVs). However, PMSMs have highly nonlinear magnetic characteristics, especially interior PMSMs, due to the existence of reluctance torque. Nonlinearity complicates not only machine modeling but also control algorithms. An accurate machine model is the key aspect for the prediction of machine performance as well as the development of a high-performance control algorithm. Hence, this paper presents an accurate modelling method for PMSMs. The proposed model method is applicable for all PMSMs, even multiphase machines. This paper considers a fractional slot concentrated winding 12/10 interior PMSM (IPMSM) for this study to demonstrate the effect of magnetic saturation and special harmonics. The developed model considers accurately the magnetic saturation, mutual coupling, spatial harmonics, and iron loss effects. It utilizes finite element analysis (FEA) to estimate the precise magnetic characteristics of IPMSM. The finite element model is calibrated precisely using experimental measurements. The iron losses are estimated within the simulation model as d- and q-axes current components. The model accuracy is validated experimentally based on a 12/10 IPMSM prototype.
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Kumar, Rajesh, Erwan Sulaiman, Mahyuzie Jenal, Laili Iwani Jusoh, and Fatihah Shafiqah Bahrim. "Design and Investigation of Outer Rotor Permanent Magnet Flux Switching Machine for Downhole Application." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 1 (March 1, 2017): 231. http://dx.doi.org/10.11591/ijpeds.v8.i1.pp231-238.
Full textAbstract:
Permanent magnet flux switching machine (PMFSM) is a joint venture of switch reluctance machine (SRM) and permanent magnet synchronous machine (PMSM). It has become a prominent research topic for various applications because of robust rotor structure, high torque and power densities but few were developed for downhole applications mainly due to harsh environmental conditions. Formerly, most of developed PMFSMs for downhole applications were mainly concentrated on inner-rotor type design, and difficult to find research work on outer-rotor configuration. Therefore, this paper introduces the design and investigation of PMFSM with outer-rotor configuration for downhole application. Primarily, the geometric topology of proposed design is described in detail. Then, the no load and load analysis are implemented in order to investigate the initial performance of the proposed design.
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Yang, Guohui, and Chengning Zhang. "Computationally Efficient PM Power Loss Mapping for PWM Drive Surface-Mounted Permanent Magnet Synchronous Machines." Applied Sciences 11, no. 7 (April 5, 2021): 3246. http://dx.doi.org/10.3390/app11073246.
Full textAbstract:
This paper proposes a computationally efficient approach for mapping permanent magnet (PM) power loss in permanent magnet synchronous machines (PMSMs). The PM loss mapping method here uses time-step finite element analysis (FEA) to determine the function parameters representing the loss variation with speed (frequency), amplitude modulation ratio, carrier ratio, and stator current and is suitable for rapid evaluation of machine performance over the entire torque–speed envelope. The PM loss can be accurately mapped across the full operational envelope, including the field-weakened mode. The loss mapping procedure takes into account the equivalent resistivity of axial segmentation of the PM array calculated by three-dimensional (3-D) FEA. The effect of temperature on the PM loss is also considered. The proposed methodology is validated on two surface-mounted PMSM designs. The results of the loss mapping procedure are consistent with those from direct 3-D finite element prediction and experimental results of PM power loss at each operating point of the machine.