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1

Petrov, Timur, and Alfred Safin. "Theoretical aspects of optimization synchronous machine rotors." E3S Web of Conferences 178 (2020): 01049. http://dx.doi.org/10.1051/e3sconf/202017801049.

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Permanent magnet synchronous electric machines are increasingly used in various drive technical complexes (oil industry, small generation, aviation industry, etc.). The presented optimization allows you to increase the energy performance of a synchronous machine without increasing the overall dimensions. Permanent magnet synchronous motors have become much more commonly operated in various drive technical complexes. For each drive complex, it is necessary to fulfil the requirements for the developed torque, cooling conditions and strength characteristics. The distribution of materials (topology) in the rotor casing of a synchronous machine (permanent magnets, iron, air, etc) determines the characteristics of permanent magnet synchronous electric machine.
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2

Zhang, Jia Ying, Li Ping Zhang, and Gui Ling Xiao. "Direct Drive Permanent Magnet Synchronous Wind Generator Maximum Power Tracking Control." Advanced Materials Research 724-725 (August 2013): 459–62. http://dx.doi.org/10.4028/www.scientific.net/amr.724-725.459.

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Direct drive permanent magnet synchronous generator have the advantages of direct drive, simple structure, high efficiency and so on, in which make it become one of mainstream models within MW wind turbine presently. Making the direct drive permanent magnet wind power generation system as the main research object, based on the principle of the operating characteristics of direct drive permanent magnet synchronous wind generator ( DDPMG ), establish mathematical model of the whole system including wind velocity, wind turbine, direct drive permanent magnet synchronous generator and machine side converter, Appling the method of stator flux orientation to make the study of vector control strategy, to build the simulation model of direct drive permanent magnet synchronous generator system with Matlab and simulate when wind speed changes by step, the results validate the reasonableness of the model and the correctness and feasibility of the control strategy.
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3

Zhang, Jia Ying, and Li Ping Zhang. "The Research on Direct Drive Permanent Magnet Synchronous Wind Generator Vector Control." Advanced Materials Research 512-515 (May 2012): 798–802. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.798.

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Direct drive permanent magnet synchronous generator have the advantages of direct drive, simple structure, high efficiency and so on, in which make it become one of mainstream models within MW wind turbine presently. Making the direct drive permanent magnet wind power generation system as the main research object, based on the principle of the operating characteristics of direct drive permanent magnet synchronous wind generator ( DDPMG ), establish mathematical model of the whole system including wind turbine, direct drive permanent magnet synchronous generator and machine side converter, applying the method of stator flux orientation to make the study of vector control strategy, to build the simulation model of direct drive permanent magnet synchronous generator system with Matlab to simulate the operation of generator when wind speed changes by step, the results validate the reasonableness of the model and the correctness and feasibility of the control strategy.
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4

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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5

Ramadan, Salah. "CONTROL SCHEME OF A PERMANENT-MAGNET SYNCHRONOUS MACHINE-DRIVE.." International Conference on Aerospace Sciences and Aviation Technology 2, CONFERENCE (April 1, 1987): 1–13. http://dx.doi.org/10.21608/asat.1987.26236.

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6

Kiss, Gergely Máté, and István Vajda. "Co-Simulation of an Inverter Fed Permanent Magnet Synchronous Machine." Electrical, Control and Communication Engineering 6, no. 1 (October 23, 2014): 19–25. http://dx.doi.org/10.2478/ecce-2014-0013.

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Abstract Co-simulation is a method which makes it possible to study the electric machine and its drive at once, as one system. By taking into account the actual inverter voltage waveforms in a finite element model instead of using only the fundamental, we are able to study the electrical machine's behavior in more realistic scenario. The recent increase in the use of variable speed drives justifies the research on such simulation techniques. In this paper we present the co-simulation of an inverter fed permanent magnet synchronous machine. The modelling method employs an analytical variable speed drive model and a finite element electrical machine model. By linking the analytical variable speed drive model together with a finite element model the complex simulation model enables the investigation of the electrical machine during actual operation. The methods are coupled via the results. This means that output of the finite element model serves as an input to the analytical model, and the output of the analytical model provides the input of the finite element model for a different simulation, thus enabling the finite element simulation of an inverter fed machine. The resulting speed and torque characteristics from the analytical model and the finite element model show a good agreement. The experiences with the co-simulation technique encourage further research and effort to improve the method.
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7

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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8

CV, Aravind, Ramani Kannan, Heng Jing Lei, and Joga Dharma Setiawan. "Design studies of inner and outer embedded Permanent Magnet for hybrid electric vehicles." MATEC Web of Conferences 159 (2018): 02003. http://dx.doi.org/10.1051/matecconf/201815902003.

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Hybrid vehicles require high torque for propel, hence permanent Magnet machines are highly suiting for the improvement in the torque density. The paper focus on designing built-in interior permanent magnet (IPM) synchronous machine for hybrid electric drive. With the permanent magnet switched from rotor to stator and the characteristics over a wide range of speed operation is studied. The results obtained though performance analysis shows that at 130 rpm high torque with power peaking at around 900 rpm. Both the inner and outer machine are studied using numerical study tool for performance analysis for the application mentioned above. The inner magnet rotor design has provide a better magnetic flux flow due to the larger flux linkage between the permanent magnet and stator pole. Both type of machines are evaluated for torque where the machine with inner magnet provide a higher torque density of 4.94% as compared to the outer magnet machines.
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9

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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10

Noguchi, Toshihiko. "Trends of permanent-magnet synchronous machine drives." IEEJ Transactions on Electrical and Electronic Engineering 2, no. 2 (March 2007): 125–42. http://dx.doi.org/10.1002/tee.20119.

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11

Noguchi, Toshihiko. "Trends of permanent-magnet synchronous machine drives." IEEJ Transactions on Electrical and Electronic Engineering 2, no. 2 (2007): xi—xii. http://dx.doi.org/10.1002/tee.20136.

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12

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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13

Wang, Xu Dong, Ning Ning Ren, and Xiao Zhuo Xu. "Design and Research of a PMLSM-Driven Elevator Door Machine." Advanced Materials Research 383-390 (November 2011): 5707–11. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.5707.

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Most of the existing elevator door driven by rotary motors, this paper used to design the permanent magnet linear synchronous motor as the Drive Fixed Motor, the door can eliminate the need of drive mechanism between the motor and the door, direct drive door in a straight line, improve reliability and security of the door machine. Through experimental analysis, the design uses DSP and Intelligent Power Module (IPM) combination of control system for elevator door operation by setting curve and stable operation.
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14

Reigosa, David, Daniel Fernandez, Cristina Gonzalez, Sang Bin Lee, and Fernando Briz. "Permanent Magnet Synchronous Machine Drive Control Using Analog Hall-Effect Sensors." IEEE Transactions on Industry Applications 54, no. 3 (May 2018): 2358–69. http://dx.doi.org/10.1109/tia.2018.2802950.

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15

Diao, Sidath, Demba Diallo, Zaatar Makni, Claude Marchand, and Jean-Francois Bisson. "A Differential Algebraic Estimator for Sensorless Permanent-Magnet Synchronous Machine Drive." IEEE Transactions on Energy Conversion 30, no. 1 (March 2015): 82–89. http://dx.doi.org/10.1109/tec.2014.2331080.

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16

Wang, Bo, Jiabin Wang, Bhaskar Sen, Antonio Griffo, Zhigang Sun, and Ellis Chong. "A Fault-Tolerant Machine Drive Based on Permanent Magnet-Assisted Synchronous Reluctance Machine." IEEE Transactions on Industry Applications 54, no. 2 (March 2018): 1349–59. http://dx.doi.org/10.1109/tia.2017.2781201.

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17

Jurca, Florin Nicolae, Radu Petru Hangiu, and Claudia Martis. "Design and Performance Analysis of an Integrated Starter-Alternator for Hybrid Electric Vehicles." Advanced Engineering Forum 8-9 (June 2013): 453–60. http://dx.doi.org/10.4028/www.scientific.net/aef.8-9.453.

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In automotive applications, the requirements for the electrical machines are about performance and reliability - the permanent magnet synchronous machines ensure these requirements are fulfilled. The approach of the present paper is to analyze the permanent synchronous machines suited for the integrated starter-alternator (ISA) applications. The study design requires some analytical, followed by a numerical analysis and also a finite element method in order to achieve the performances of the machine. The operation modes of an ISA system and the constraints for an electric machine acting as an ISA are detailed. Finally a model for a ISA hybrid vehicle, developed in AMESim is presented and the results of a simulated drive cycle are presented.
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18

Choi, Gilsu. "Analysis and Experimental Verification of the Demagnetization Vulnerability in Various PM Synchronous Machine Configurations for an EV Application." Energies 14, no. 17 (September 1, 2021): 5447. http://dx.doi.org/10.3390/en14175447.

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Safety is a critical feature for all passenger vehicles, making fail–safe operation of the traction drive system highly important. Increasing demands for traction drives that can operate in challenging environments over wide constant power speed ranges expose permanent magnet (PM) machines to conditions that can cause irreversible demagnetization of rotor magnets. In this paper, a comprehensive analysis of the demagnetization vulnerability in PM machines for an electric vehicle (EV) application is presented. The first half of the paper presents rotor demagnetization characteristics of several different PM machines to investigate the impact of different design configurations on demagnetization and to identify promising machine geometries that have higher demagnetization resistance. Experimental verification results of rotor demagnetization in an interior PM (IPM) machine are presented in the latter half of the paper. The experimental tests were carried out on a specially designed locked-rotor test setup combined with closed-loop magnet temperature control. Experimental results confirm that both local and global demagnetization damage can be accurately predicted by time-stepped finite element (FE) analysis.
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19

Zheng, Ping, Yi Sui, Bin Yu, Fan Wu, and Peng Fei Wang. "Research on a Five-Phase In-Wheel Permanent-Magnet Synchronous Machine." Applied Mechanics and Materials 416-417 (September 2013): 144–48. http://dx.doi.org/10.4028/www.scientific.net/amm.416-417.144.

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This paper discusses the design of a fault-tolerant Permanent-Magnet Synchronous Machine (PMSM) for electric vehicles. The investigated machine is a five-phase in-wheel machine with 40 slots and 42 poles. The electromagnetic performance of double layer and single layer windings are compared based finite element analysis. The magnetic isolation abilities of the two winding types are also compared. Finally, a 12kW five-phase fault-tolerant machine which is able to meet the demand of electric drive system is designed and evaluated.
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20

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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Dini, Pierpaolo, and Sergio Saponara. "Cogging Torque Reduction in Brushless Motors by a Nonlinear Control Technique." Energies 12, no. 11 (June 11, 2019): 2224. http://dx.doi.org/10.3390/en12112224.

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This work addresses the problem of mitigating the effects of the cogging torque in permanent magnet synchronous motors, particularly brushless motors, which is a main issue in precision electric drive applications. In this work, a method for mitigating the effects of the cogging torque is proposed, based on the use of a nonlinear automatic control technique known as feedback linearization that is ideal for underactuated dynamic systems. The aim of this work is to present an alternative to classic solutions based on the physical modification of the electrical machine to try to suppress the natural interaction between the permanent magnets and the teeth of the stator slots. Such modifications of electric machines are often expensive because they require customized procedures, while the proposed method does not require any modification of the electric drive. With respect to other algorithmic-based solutions for cogging torque reduction, the proposed control technique is scalable to different motor parameters, deterministic, and robust, and hence easy to use and verify for safety-critical applications. As an application case example, the work reports the reduction of the oscillations for the angular position control of a permanent magnet synchronous motor vs. classic PI (proportional-integrative) cascaded control. Moreover, the proposed algorithm is suitable to be implemented in low-cost embedded control units.
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22

Laskaris, Konstantinos, Effrosyni Theodorou, Vasilios Papanikolaou, and Antonios Kladas. "High Efficiency Permanent Magnet Wheel Motor Design for Light Electric Vehicle Applications." Materials Science Forum 721 (June 2012): 313–18. http://dx.doi.org/10.4028/www.scientific.net/msf.721.313.

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Permanent magnet synchronous machines with non-overlapping concentrated fractional-slot windings present certain improved electrical characteristics compared to full pitch windings configurations. This paper describes the design process and construction of two 10-pole permanent magnet synchronous motors, featuring full-pitch and fractional-pitch windings. The paper compares these two configurations in terms of performance and efficiency. Both motors have been designed for direct-drive applications with low speed and high efficiency capability and are intended to be used as a traction drive in an electric prototype vehicle. The proposed motors have external rotor configuration with surface mounted NdFeB magnets. The electromagnetic characteristics and performance are computed and analyzed by means of finite elements analysis. These results are finally compared with the experimental measurements on respective prototypes.
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23

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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Al – Tahir, Ali Abdul Razzaq. "Sensorless online measurements: application to variable speed drive systems." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 37, no. 1 (January 2, 2018): 29–53. http://dx.doi.org/10.1108/compel-10-2016-0453.

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Purpose Sensorless online measurements, application of variable speed drives has been given a great attention, especially over the past few years. In most of the previous literates dealing with permanent magnet synchronous motor (PMSM) drives, the combination of inter-sampled behavior with high gain design approach has not been discussed yet. This paper aims to discuss this feature in-depth. Design/methodology/approach The study contains a different approach for an observer running with surface-mounted permanent magnet synchronous machine drives to implement sensorless control. Design of sampled data observer methodology for one kind of AC machine having non-linear model and backed by an elegant formal stability convergence analysis using the tools of Lyapunov stability techniques was highly recommended in scientific contributions, and it is yet needed to be solved. Findings In this study, a solution to observation problem is covered and developed by combining ideas from the high-gain design approach and inter-sample predictor based on stator voltage measurements. The output state currents are accessible only at the sampling instant to solve the problem of states observation at continuous-time mode. This allows to reducing the usage of online appliances, improving reliability of control design and saving costs. Practical implications The proposed observer is capable of guaranteeing an acceptable closed loop dynamic response over a wide range of operation region and industrial process for random initial conditions. Originality/value The output state predictor has been interred in constructing the innovation correct term to prove the robustness of the proposed observer against attenuated sampling interval. To validate the theoretical results introduced by the main fundamental theorem and prove the observer stability convergence, the proposed observer is demonstrated through a sample study application to variable speed permanent magnet synchronous machine drive.
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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.

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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.
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Lan, Yi Peng, and Cheng Jun Li. "Magnetic Levitation Permanent Magnet Linear Synchronous Motor Electromagnetic Analysis." Advanced Materials Research 383-390 (November 2011): 5233–37. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.5233.

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According to the problem of the friction between the mover and the static guide rail in the linear motor drive system of CNC machine tool, this paper proposed the direct magnetic levitation permanent magnet linear synchronous motor to achieve friction-free feed. The mover of the direct magnetic levitation permanent magnet linear motor consists of two sets of windings. One is the thrust winding, which is used to generate electromagnetic thrust, the other is the suspension winding, which is used to generate magnetic levitation force. The mathematical model of the motor’s electromagnetic thrust and levitation force is derived by the Maxwell stress tensor method. Ansoft is used for making finite element analysis of the motor’s electromagnetic thrust and levitation force. The results verified the correctness of the mathematical model. The feasibility of friction-free feed with two-winding direct magnetic levitation permanent magnet synchronous motor is proved.
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27

You, Zih-Cing, and Sheng-Ming Yang. "A Restarting Strategy for Back-EMF-Based Sensorless Permanent Magnet Synchronous Machine Drive." Energies 12, no. 9 (May 13, 2019): 1818. http://dx.doi.org/10.3390/en12091818.

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Safely starting a spinning position sensorless controlled permanent magnet synchronous machine is difficult because the current controller does not include information regarding the motor position and speed for suppressing the back-electromotive force (EMF)-induced current. This paper presents a restarting strategy for back-EMF-based sensorless drives. In the proposed strategy, the existing back-EMF and position estimator are used and no additional algorithm or specific voltage vector injection is required. During the restarting period, the current controller is set to a particular state so that the back-EMF estimator can rapidly estimate motor voltage without using rotor position and speed. Then, this voltage is used to decouple the back-EMF of the motor in the current controller in order to suppress the induced current. After the back-EMF is decoupled from the current controller, sensorless control can be restored with the estimated position and speed. The experimental results indicated that the induced current can be suppressed within four to five sampling periods regardless of the spinning conditions. Because of the considerably short time delay, the motor drive can restart safely from various speeds and positions without causing overcurrent fault.
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28

Wang, Gaolin, Maria Valla, and Jorge Solsona. "Position Sensorless Permanent Magnet Synchronous Machine Drives—A Review." IEEE Transactions on Industrial Electronics 67, no. 7 (July 2020): 5830–42. http://dx.doi.org/10.1109/tie.2019.2955409.

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29

Fodorean, Daniel, and Lorand Szabo. "Study of Permanent Magnet Synchronous Machine Topologies for Electric Scooter Application." Advanced Engineering Forum 8-9 (June 2013): 397–404. http://dx.doi.org/10.4028/www.scientific.net/aef.8-9.397.

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The paper deals with the study of the motorization for an electric scooter. The motivation of this study is firstly introduced. Next, the application is defined: it is intended to propose a pure electrical traction system for a light electric vehicle, meaning an electric scooter). A short description of the design will introduce the main parameters of the electrical drive system and three topologies of electrical machine will be evaluated. The optimization of the best suited variant will be made based on a gradient type optimization algorithm. Numerical computation, by means of finite element method, will confirm the analytical obtained results, emphasizing the main achievements, performances and drawbacks of the electrical traction system. These performances are evaluated on test bench for validation.
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30

Hafner, Martin, David Franck, and Kay Hameyer. "Conformal mapping approach for permanent magnet synchronous machines: on the modeling of saturation." Archives of Electrical Engineering 61, no. 2 (June 1, 2012): 211–20. http://dx.doi.org/10.2478/v10171-012-0018-y.

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Conformal mapping approach for permanent magnet synchronous machines: on the modeling of saturation In the electromagnetic field simulation of modern servo drives, the computation of higher time and space harmonics is essential to predict torque pulsations, radial forces, ripple torques and cogging torque. Field computation by conformal mapping (CM) techniques is a time-effective method to compute the radial and tangential field components. In the standard CM approach, computational results of cogging torque simulations as well as overload operations observe deviations to nonlinear finite element (FE) simulations due to the neglection of slot leakage and saturation effects. This paper presents an extension of the classical CM. Additional CM parameters are computed from single finite element computations so as to consider both effects listed above in the model over a wide operation range of the electrical drive. The proposed approach is applied to a surface permanent magnet synchronous machine (SM-PMSM), and compared to numerical results obtained by finite element analysis (FEA). An accuracy similar to that of FE simulations is obtained with however the low computation time that is characteristic for analytical models.
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31

Kaňuch, Ján, and Peter Girovský. "Motor for Direct Drive of Electric Wheelchair." International Journal of Engineering Research in Africa 31 (July 2017): 94–103. http://dx.doi.org/10.4028/www.scientific.net/jera.31.94.

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Described in the paper is analysis of properties of synchronous motor with outer permanent magnets rotor. The motor, having an atypical construction, is powered by low voltage from a three phase frequency converter. It is suitable as a drive unit for direct power drives of small electric vehicles and electric wheelchairs. Theoretical analysis of the synchronous motor with outer permanent magnets rotor starts with the air gap space configuration. The present paper describes the main results from open-circuit and load simulation. The section of paper describes the mechanical construction of prototype of the synchronous machine. Experimental results of measurements of the machine prototype in the generatoric and motoric mode are described. Experimental measurements verified stability of the motor parameters at its loading.
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32

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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33

Yahiaoui, Maamar, Abderrahmane Kechich, and Ismail Khalil Bouserhane. "Adaptive Sliding Mode Control of PMLSM Drive." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 2 (June 1, 2017): 639. http://dx.doi.org/10.11591/ijpeds.v8.i2.pp639-646.

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In this paper, we propose a study by software MATLAB/Simulink of the adaptive nonlinear controller of permanent magnet linear synchronous machine. The lumped uncertainties due for saturation magnetic and temperature and distribution load effects in performances of the system control. To resolve this problem the sliding mode controller is designed with estimator of load force by MRAS method the simulation results prove clearly the robustness of controlling law and estimator method.
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34

OLESIAK, Krzysztof. "Application of a fuzzy logic controller for a permanent magnet synchronous machine drive." PRZEGLĄD ELEKTROTECHNICZNY 1, no. 12 (December 5, 2016): 115–18. http://dx.doi.org/10.15199/48.2016.12.29.

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35

Haskew, T. A., D. E. Schinstock, and E. M. Waldrep. ""Two-phase on" drive operation in a permanent magnet synchronous machine electromechanical actuator." IEEE Transactions on Energy Conversion 14, no. 2 (June 1999): 153–58. http://dx.doi.org/10.1109/60.766970.

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36

Koteich, Mohamad, Abdelmalek Maloum, Gilles Duc, and Guillaume Sandou. "Discussion on “A Differential Algebraic Estimator for Sensorless Permanent-Magnet Synchronous Machine Drive”." IEEE Transactions on Energy Conversion 30, no. 3 (September 2015): 1137. http://dx.doi.org/10.1109/tec.2015.2459791.

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37

Hwang, Chang Chou, Cheng Tsung Liu, and Chia Ming Chang. "Optimal Design of a Servo Motor for Energy-Saving in Oil Hydraulic System of Machine Tools." Materials Science Forum 856 (May 2016): 227–32. http://dx.doi.org/10.4028/www.scientific.net/msf.856.227.

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This paper presents a permanent magnet synchronous serve motor (PMSSM) to replace an induction motor (IM) in the oil hydraulic system in machine tools to drive a pump for supplying the oil. The proposed is designed to meet not only the machine performance, such as higher average torque per volume of magnet usage and the efficiency, and lower torque ripple, but also the energy-saving policy. The motor is optimized using the fuzzy-based Taguchi method. Finally, the proposed motor is installed in the machine tools for measurement, and compared with the tradition machine tools installed with IM.
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38

May, H., R. Palka, P. Paplicki, S. Szkolny, and W. R. Canders. "Modified concept of permanent magnet excited synchronous machines with improved high-speed features." Archives of Electrical Engineering 60, no. 4 (December 1, 2011): 531–40. http://dx.doi.org/10.2478/v10171-011-0043-2.

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Modified concept of permanent magnet excited synchronous machines with improved high-speed features Permanent magnet (PM) excited synchronous machines used in modern drives for electro-mobiles suffer in high speed regions from the limited battery-voltage. The field weakening requires designing machines with reduced power conversion properties or increasing the size of the power converter. A new concept of such a machine features PM excitation, single-tooth winding and an additional circumferential excitation coil fixed on the stator in the axial center of the machine. By the appropriate feeding of this coil, the amplitude of the voltage effective excitation field can be varied from zero to values above those of the conventional PM-machines. The capability of reducing the excitation field to zero is an important safety aspect in case of failing of the feeding convertor.
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39

Ameen, Namariq, Ali Abdulabbas, and Habeeb Nekad. "Modeling and Simulation of Five-Phase Synchronous Reluctance Motor Fed By Five-Phase Inverter." Iraqi Journal for Electrical and Electronic Engineering 17, no. 1 (March 13, 2021): 1–8. http://dx.doi.org/10.37917/ijeee.17.1.7.

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Five-phase machine employment in electric drive system is expanding rapidly in many applications due to several advantages that they present when compared with their three-phase complements. Synchronous reluctance machines(SynRM) are considered as a proposed alternative to permanent magnet machine in the automotive industry because the volatilities in the permanent magnet price, and a proposed alternative for induction motor because they have no field excitation windings in the rotor, SyRM rely on high reluctance torque thus no needing for magnetic material in the structure of rotor. This paper presents dynamic simulation of five phase synchronous reluctance motor fed by five phase voltage source inverter based on mathematical modeling. Sinusoidal pulse width modulation (SPWM) technique is used to generate the pulses for inverter. The theory of reference frame has been used to transform five-phase SynRM voltage equations for simplicity and in order to eliminate the angular dependency of the inductances. The torque in terms of phase currents is then attained using the known magnetic co-energy method, then the results obtained are typical.
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40

Krasnov, Ivan Yurievich, Sergey Vladimirovich Langraf, and Stepan Ivanovich Chobanov. "A Sensorless Initial Rotor Position Estimation for Permanent Magnet Synchronous Machines." Applied Mechanics and Materials 792 (September 2015): 83–89. http://dx.doi.org/10.4028/www.scientific.net/amm.792.83.

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Permanent magnet synchronous motors for the effective start requires information about an initial position of a rotor. In this regard, most systems use position sensors, which substantially increase a cost of an electrical drive entirely [1-3]. The aim of this article is to develop new method, allowing to determine the absolute angular position of the rotor of the permanent magnet synchronous motors [4,5]. With a certain voltage pulses, in series applied to the motor, stator is magnetized by currents leakage in the windings. This allows, using a special algorithm, to calculate the absolute position of the rotor without using any motor parameters [6]. Simulation results prove the simplicity and efficiency of this method for determining an initial position of the rotor of the permanent magnet synchronous motors. Thus, this method can be widely used in the electrical industry.
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41

Moradian, Mohammadreza, Jafar Soltani, Mohamed Benbouzid, and Abbas Najjar-Khodabakhsh. "A Parameter Independent Stator Current Space-Vector Reference Frame-Based Sensorless IPMSM Drive Using Sliding Mode Control." Energies 14, no. 9 (April 22, 2021): 2365. http://dx.doi.org/10.3390/en14092365.

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In this paper, a sliding mode control is presented for direct torque and stator flux control of interior permanent magnet synchronous motor in a rotor speed sensorless drive system. The control scheme is developed in a specific synchronous rotating reference frame (X-Y) in which the stator current space vector coincides with the direct (X) axis. For this control technique no need to have any knowledge of machine parameters such as stator two-axis inductances, rotor permanent magnets flux linkage, and even the rotor initial position. However, the on-line actual stator resistance value is required to estimate the stator flux components in the stator stationary two-axis reference frame. In this control strategy, two simple methods are described for estimating the rotor speed and stator resistance. Some simulation and experimental results are presented to support the validity and effectiveness of the proposed control scheme.
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42

Golubev, A. N., and V. G. Belonogov. "The development of multi-channel control system for a multi-phase synchronous electric drive with improved vibration noise characteristics." Vestnik IGEU, no. 3 (June 30, 2020): 43–50. http://dx.doi.org/10.17588/2072-2672.2020.3.043-050.

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Constantly increasing requirements for the performance of electromechanical systems include the task of improving the vibration and noise characteristics of the electric drive. Currently, this problem is solved mainly by using traditional three-phase systems. The transition to a multiphase version of the electric drive construction opens up new opportunities for its solution. The aim of the study is to improve the vibration and noise characteristics of the electric drive through the development of a multiphase control system that provides targeted formation of the field configuration in the gap of a multiphase electric machine. To conduct the research, the model of a multiphase synchronous motor proposed by the authors was used. The model considers the spatial non-sinusoidality of the field distribution in the gap and enables to represent the engine as a set of parallel substructures, the number of which depends on the number of phases. The technique to design a synchronous motor with an arbitrary number of winding phases based on the field model of the machine has been proposed. The correctness of the results obtained is ensured by the real geometry of the magnetic circuit and steel saturation. The multi-channel control system of the electric drive, characterized by the targeted formation of field configuration in the gap of a multiphase electric machine has been proposed. The calculation model of the electric drive has been developed. The model combines the field model of the engine and the control system. The engine model is implemented in the ElСut software package, the control system model is implemented in the MatLab (Simulink) complex. Compared to the traditional three-phase design of the electric drive with a sinusoidal supply voltage, the options for forming a field in the gap of a synchronous motor considered in the article provide a reduction in ponderomotive force by 8–14 %. The engineering methodology for designing an m-phase synchronous permanent magnet motor with permanent magnets and the structure of the multi-channel control system can be applied when developing electric drives with improved vibration and noise characteristics.
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43

Kumar, Piyush, Omar Bottesi, Sandro Calligaro, Luigi Alberti, and Roberto Petrella. "Self-Adaptive High-Frequency Injection Based Sensorless Control for Interior Permanent Magnet Synchronous Motor Drives." Energies 12, no. 19 (September 24, 2019): 3645. http://dx.doi.org/10.3390/en12193645.

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An auto-tuning and self-adaptation procedure for High Frequency Injection (HFI) based position and speed estimation algorithms in Interior Permanent Magnet Synchronous Motor (IPMSM) drives is proposed in this paper. Analytical developments show that, using conventional approaches, the dynamics of the high-frequency tracking loop varies with differential inductances, which in turn depend on the machine operating point. On-line estimation and adaptation of the small signal gain of the loop is proposed here, allowing accurate auto-tuning of the sensorless control scheme which does not rely on a priori knowledge of the machine parameters. On-line adaptation of Phase-Locked Loop (PLL) gains and of the injected voltage magnitude is also possible, leading to important advantages from the performance, loss and acoustic point of view. The theoretical basis of the method has been introduced first and the main concept demonstrated by means of simulations. Implementation has been carried out using the hardware of a commercial industrial drive and two Interior Permanent Magnet Synchronous Motors, namely a prototype and an off-the-shelf machine. Experimental tests demonstrate the feasibility and effectiveness of the proposal.
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44

Serebryakov, A., N. Levin, and A. Sokolov. "Direct-Drive Synchronous Generators with Excitation from Strontium-Ferrite Magnets: Efficiency Improvement." Latvian Journal of Physics and Technical Sciences 49, no. 4 (January 1, 2012): 3–13. http://dx.doi.org/10.2478/v10047-012-0018-0.

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Direct-Drive Synchronous Generators with Excitation from Strontium-Ferrite Magnets: Efficiency Improvement The authors consider the possibility to raise the specific power of synchronous generators with excitation from inexpensive permanent magnets. For this purpose, it is proposed to use tooth-wise windings and permanent magnets based on inexpensive magneto-hard material, e.g. strontium-ferrite. The magnets are to be placed between the rotor teeth, the alternate polarity of which is facing the air-gap. This provides a simpler and cheaper technology of making such a generator and improves its reliability. The proposed rational bevelling of the stator teeth not only raises the specific power of the generator but also reduces the level of noise and vibrations, extends the longevity of the magnets and bearings as well as facilitates the starting torque of the electric machine, e.g. if it is employed as wind generator.
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45

Paplicki, Piotr, Marcin Wardach, Michał Bonisławski, and Ryszard Pałka. "Simulation and experimental results of hybrid electric machine with a novel flux control strategy." Archives of Electrical Engineering 64, no. 1 (March 1, 2015): 37–51. http://dx.doi.org/10.1515/aee-2015-0005.

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Abstract The paper presents selected simulation and experimental results of a hybrid ECPMS-machine (Electric Controlled Permanent Magnet Synchronous Machine). This permanent magnets (PMs) excited machine offers an extended magnetic field control capability which makes it suitable for battery electric vehicle (BEV) drives. Rotor, stator and the additional direct current control coil of the machine are analyzed in detail. The control system and strategy, the diagram of power supply system and an equivalent circuit model of the ECPMS-machine are presented. Influence of the additional excitation on the performance parameters of the machine, such as: torque, efficiency, speed limits and back-EMF have also been discussed.
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46

Qu, Bao Zhong, and Er Bao Peng. "Research on Compensating Method of Flux Fluctuations in Permanent Magnet of AC Servo System." Advanced Materials Research 433-440 (January 2012): 4071–76. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.4071.

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This paper suggests a compensating method of flux fluctuations in permanent magnet of AC servo system. after analyzing the characteristics and control measures of flux fluctuations, the compensation strategy for reducing the effect of flux fluctuations on electromagnetic torque is put forward. Though the simulation experiments it is shown that the flux compensation method for improving the position control accuracy of the movers when their running at high speed is proved to be positive effective. For CNC machine tools, industrial robots and other occasions involving sophisticated movement, synchronous servo motors in permanent magnet are usually driven by high-performance sine wave. In order to obtain good control performance, the high demands are put forward for reducing the torque fluctuations Torque fluctuations are an important factor to affect the stability of low speed servo drive system, high-speed stability and precision position control. There are many factors causing torque fluctuations, in which the flux fluctuations in permanent magnet are an important one.
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47

Kassem, Ahmed M., and A. A. Hassan. "Performance Improvements of a Permanent Magnet Synchronous Machine via Functional Model Predictive Control." Journal of Control Science and Engineering 2012 (2012): 1–8. http://dx.doi.org/10.1155/2012/319708.

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This paper investigates the application of the model predictive control (MPC) approach to control the speed of a permanent magnet synchronous motor (PMSM) drive system. The MPC is used to calculate the optimal control actions including system constraints. To alleviate computational effort and to reduce numerical problems, particularly in large prediction horizon, an exponentially weighted functional model predictive control (FMPC) is employed. In order to validate the effectiveness of the proposed FMPC scheme, the performance of the proposed controller is compared with a classical PI controller through simulation studies. Obtained results show that accurate tracking performance of the PMSM has been achieved.
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48

Bose, B. K. "A high-performance inverter-fed drive system of an interior permanent magnet synchronous machine." IEEE Transactions on Industry Applications 24, no. 6 (1988): 987–97. http://dx.doi.org/10.1109/28.17470.

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49

Arias, Antoni, Carlos Ortega, Jordi Zaragoza, Jordi Espina, and Josep Pou. "Hybrid sensorless permanent magnet synchronous machine four quadrant drive based on direct matrix converter." International Journal of Electrical Power & Energy Systems 45, no. 1 (February 2013): 78–86. http://dx.doi.org/10.1016/j.ijepes.2012.08.073.

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50

Cheng, Liang, Xiao Jie Ye, Dong Ru Sun, Yun Yue Ye, and Yong Jin. "Low Speed Compound Direct-Drive Permanent Magnet Synchronous Motor Control Systemwith Load Torque Compensation." Applied Mechanics and Materials 416-417 (September 2013): 652–57. http://dx.doi.org/10.4028/www.scientific.net/amm.416-417.652.

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Effected by sensor measurement noise, system noise and load disturbance torque, dynamic performance of low speed compound direct-drive permanent magnet synchronous machine (PMSM) decreased and speed fluctuation increased, which result in creeping phenomenon and unstable working state of servo system directly driven by PMSM. A load torque observer based on extended kalman filter (EKF) is proposed here, which gives correct estimation of rotor position, rotor speed and load torque through electromagnetic torque and encoder signal. A control strategy using estimated load torque for forward feedback compensation is also discussed with no need of extra hardware equipment. Simulation results showed that PMSM can operate steadily at the speed of 2.5r/min with less speed fluctuation only using a low resolution encoder, which verified the effectiveness and practicability of the method mentioned in this paper.
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