Journal articles: 'Two Phase Switched Reluctance Motor'

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Morón, Carlos, Alfonso Garcia, and Jose Andrés Somolinos. "Mathematical Model Switched Reluctance Motor." Key Engineering Materials 644 (May 2015): 87–91. http://dx.doi.org/10.4028/www.scientific.net/kem.644.87.

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This paper describes a mathematical model of switched reluctance motor (SRM). The mathematical model of the SR motor is nonparametric and can only be established with experimental data, instead of an analytical representation. Because the reluctance varies with rotor position and magnetic saturation is part of the normal operation of SR motors, there is no simple analytical expression for the magnetic field produced by the phase windings. The shape of phase current before commutation is of interest because it varies widely depending on when the phase winding is excited and what the rotor speed is. To illustrate this effect, two step response simulations were done here in Matlab/Simulink. The SR motor model used in these two simulations is a 6/4 linear magnetics model, the same structure as the experimental SR motor. For the first simulation, a step voltage is fed into phase A and the initial rotor position is set to be 1o instead of 0o so that the rotor will move in the positive direction. The results show that the rotor stops at 45o after some oscillation which is the aligned position of this phase A. For the second simulation, a step voltage is fed into phase C. The initial position is 0o. According to this, the rotor will move towards the aligned position of phase C, i.e. 15o.

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Jin-Woo Ahn, Seok-Gyu Oh, Jae-Won Moon, and Young-Moon Hwang. "A three-phase switched reluctance motor with two-phase excitation." IEEE Transactions on Industry Applications 35, no. 5 (1999): 1067–75. http://dx.doi.org/10.1109/28.793367.

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3

Dunlop, G. "A Switched-Reluctance Motor Drive with Zero Torque Ripple and a Constant Inverter Bus Current." Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 208, no. 1 (1994): 61–68. http://dx.doi.org/10.1243/pime_proc_1994_208_306_02.

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Switched-reluctance motors appear to be ideal industrial prime movers capable of precision speed and position control. The efficiency can be higher than for a similar-sized induction motor and the electronics less complicated for precise speed control. While the switched-reluctance drive is common in some applications, it has not been widely accepted because of the large amount of torque ripple produced. The torque ripple from the widely used induction motor is quite low and it causes less vibration in the mechanical drive train following the motor. A four-phase switched-reluctance motor can he operated in such a way as to produce a constant zero-ripple torque output. The currents in at least two of the four phases are set so that the total torque produced is constant. By precisely setting the currents in three of the four phases, a constant torque output can be obtained at a constant d.c. supply current, and the switched-reluctance motor then has similar characteristics to a d.c. series motor. A mathematical description of these non-linear currents is derived along with the individual and mutual torque contributions to the total constant torque. The equations are also shown in graphical form.

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Morón, Carlos, Enrique Tremps, Puerto Ramirez, Alfonso Garcia, and Jose Andrés Somolinos. "Performance Optimization in Switched Reluctance Motor Drives." Key Engineering Materials 495 (November 2011): 67–70. http://dx.doi.org/10.4028/www.scientific.net/kem.495.67.

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In this paper, switched reluctance motors (SRM) are proposed as an alternative for electric power assisted steering (EPAS) applications. A prototype machine has been developed as very attractive design for a steering electric motor, both from a cost and size perspective. A four-phase 8/6 SRM drive is designed for a rack type EPAS which should provide a maximum force of 10 kN. Two-dimension finite element analysis is used to validate the design.

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Han, Jichao, Baojun Ge, Kai Zhang, Yang Wang, and Chao Wang. "Influence of Control and Structure Parameters on the Starting Performance of a 12/8 Pole Switched Reluctance Motor." Energies 13, no. 14 (2020): 3744. http://dx.doi.org/10.3390/en13143744.

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To investigate the influence of control and structure parameters on the starting performance of a switched reluctance motor, a 12/8 pole switched reluctance motor is analyzed in this paper. The novel field-circuit coupled finite element method of switched reluctance motor is proposed in the paper. The influence of the controller on the switched reluctance motor is considered. The influence of rotor initial position angle, starting mode, starting current, and structure parameters on the starting performance of the switched reluctance motor is studied using the field-circuit coupled finite element method. The starting performance of the switched reluctance motor is obtained under the different control and structure parameters. The alternating starting mode of single- and two-phase winding can improve the starting torque of switched reluctance motor (SRM). As the stator pole arc coefficient increases, the starting torque of SRM increases. The appropriate reduction of the air gap length can improve the starting torque of SRM. Experimental results of the prototype are compared with the calculation results, which verifies the reliability of the calculation method and accuracy of the calculation results.

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Ahn, Jin-Woo. "Characteristic Analysis of Two-Phase 4/5-Pole Switched Reluctance Motor." Journal of international Conference on Electrical Machines and Systems 1, no. 3 (2012): 347–53. http://dx.doi.org/10.11142/jicems.2012.1.3.347.

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Faiz, Jawad, B. Rezaeealam, and P. Pillay. "Adaptive performance improvement of switched reluctance motor with two-phase excitation." European Transactions on Electrical Power 16, no. 1 (2006): 1–13. http://dx.doi.org/10.1002/etep.61.

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Wang, Xing, Ryszard Palka, and Marcin Wardach. "Nonlinear Digital Simulation Models of Switched Reluctance Motor Drive." Energies 13, no. 24 (2020): 6715. http://dx.doi.org/10.3390/en13246715.

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The paper deals with nonlinear simulation models of a drive consisting of the four-phase 8/6 doubly salient switched reluctance motor (SRM), the four-phase dissymmetric bridge power converter and the closed-cycle rotor speed control strategy carried out by the pulse width modulation (PWM) with variable angle and combined control scheme with the PI algorithm. All presented considerations are based on a MATLAB-SIMULINK platform. The nonlinear mathematical model of the analyzed SRM drive was obtained as a combination of the two dimensional (2D) finite element model (FEM) of the motor and the nonlinear model of the electrical network of the power supply circuit. The main model and its seven sub-modules, such as the controller module, one phase simulation module, rotor position angle transformation module, power system module, phase current operation module, “subsystem” module, and electromagnetic torque of one phase operation module, are described. MATLAB functions store the magnetization curves data of the motor obtained by the 2D FEM electromagnetic field calculations, as well as the data of magnetic co-energy curves of the motor calculated from the magnetization curves. The 2D specimen insert method is adopted in MATLAB functions for operating the flux linkage and the magnetic co-energy at the given phase current and rotor position. The phase current waveforms obtained during simulations match with the tested experimentally phases current waveforms at the same rotor speed and the same load basically. The simulated rotor speed curves also agree with the experimental rotor speed curves. This means that the method of suggested nonlinear simulation models of the analyzed SRM drive is correct, and the model is accurate.

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Afjei, E., A. Seyadatan, and H. Torkaman. "A New Two Phase Bidirectional Hybrid Switched Reluctance Motor/Field-Assisted Generator." Journal of Applied Sciences 9, no. 4 (2009): 765–70. http://dx.doi.org/10.3923/jas.2009.765.770.

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Tsai, Mi-Ching, Chien-Chin Huang, and Zheng-Yi Huang. "A new two-phase homopolar switched reluctance motor for electric vehicle applications." Journal of Magnetism and Magnetic Materials 267, no. 2 (2003): 173–81. http://dx.doi.org/10.1016/s0304-8853(03)00350-0.

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Gu, Lei, Wei Wang, Babak Fahimi, Adam Clark, and Joseph Hearron. "Magnetic Design of Two-Phase Switched Reluctance Motor With Bidirectional Startup Capability." IEEE Transactions on Industry Applications 52, no. 3 (2016): 2148–55. http://dx.doi.org/10.1109/tia.2016.2514356.

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Pang, Da-Chen, and Chih-Ting Wang. "A Wireless-Driven, Micro, Axial-Flux, Single-Phase Switched Reluctance Motor." Energies 11, no. 10 (2018): 2772. http://dx.doi.org/10.3390/en11102772.

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This study proposes a novel, axial-flux, single-phase switched reluctance motor for micro machines with wireless-driven capability. The rotor and stator each have two poles, and the stator utilizes two permanent magnets to provide the required parking position and rotational torque. By reducing the number of magnetic poles and coils in the stator, and by utilizing a cylindrical design for its stator components, the micro motor is able to be easily manufactured and assembled. Safety and convenience are also achieved through the use of a wireless drive, which negates the need for power connections or batteries. This study utilizes the topology method in rotor design to reduce excessive torque ripple. For this study, an actual micro, axial-flux, single-phase switched reluctance motor with a diameter of 5.5 mm and length of 4.4 mm was built in combination with a wireless charging module and motor circuitry found on the market. With an induced current of 0.7 A, the motor achieved a maximum of 900 rpm, indicating possible applications with respect to toys, micro-pumps, dosing pumps, and vessels for gases, liquids, or vacuum that do not require feedthrough.

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Alrifai, M., M. Zribi, R. Krishnan, and M. Rayan. "Nonlinear Speed Control of Switched Reluctance Motor Drives Taking into Account Mutual Inductance." Journal of Control Science and Engineering 2008 (2008): 1–11. http://dx.doi.org/10.1155/2008/491625.

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A speed control algorithm is proposed for variable speed switched reluctance motor (SRM) drives taking into account the effects of mutual inductances. The control scheme adopts two-phase excitation; exciting two adjacent phases can overcome the problems associated with single-phase excitation such as large torque ripple, increased acoustic noise, and rotor shaft fatigues. The effects of mutual coupling between two adjacent phases and their contribution to the generated electromagnetic torque are considered in the design of the proposed control scheme for the motor. The proposed controller guarantees the convergence of the currents and the rotor speed of the motor to their desired values. Simulation results are given to illustrate the developed theory; the simulation studies show that the proposed controller works well. Moreover, the simulation results indicate that the proposed controller is robust to changes in the parameters of the motor and to changes in the load torque.

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Łukaniszyn, Marian, Marcin Kowol, and Janusz Kołodziej. "Optimization of a two-phase transverse flux switched reluctance motor with an outer rotor." Archives of Electrical Engineering 61, no. 4 (2012): 567–78. http://dx.doi.org/10.2478/v10171-012-0042-y.

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Abstract This paper presents optimization results for a two-phase, modular transverse flux switched reluctance motor (TFSRM) with an outer rotor. In particular, the main disadvantage of the considered motor structure, that is the zero starting torque in some rotor positions, is eliminated by construction optimization. A numerical model of the motor developed in the Flux3D program is coupled with a Matlab-based evolutionary algorithm for optimization of construction parameters of the magnetic circuit. The elaborated algorithm is also connected with a database to limit the computation costs. Three objective functions are taken into account for the motor integral parameter improvement. The fundamental role of a type of an optimization criterion function is comparatively analyzed and a new effective criterion function is introduced.

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Ma, Qingqing, Baoming Ge, Daqiang Bi, Fernando J.T.E. Ferreira, and Aníbal T. de Almeida. "A new switched reluctance motor with distributed winding." COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 33, no. 6 (2014): 2158–79. http://dx.doi.org/10.1108/compel-08-2013-0275.

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Purpose – The purpose of this paper is to propose a new three-phase switched reluctance motor (SRM), and achieve high-torque and low-cost. This new SRM's winding configuration uses the double-layer distributed windings, which is different from the conventional SRM's single tooth coils. Design/methodology/approach – The operating principle of new SRM is analyzed, and the voltage equation and the generated torque are deduced. Finite element method (FEM) and finite element circuit coupled method are utilized to evaluate the new motor's operating performances. The two dimensional (2D) frequency response analysis model is employed in the FEM model. Based on the 2D frequency response analysis model, the magnetic field distribution, self-inductance, and mutual-inductance for the new SRM are analyzed in detail. A co-simulation model using FE analysis package and Matlab-Simulink is proposed to simulate the new SRM drive. The simulated and experimental results verify the new SRM. Findings – For the new SRM with double-layer distributed windings, a co-simulation method is proposed to analyze its characteristics. The new SRM presents lower torque ripple coefficient and generates larger torque than the conventional SRM, with three-wire and standard full bridge power converter, rather than six-wire and asymmetric half-bridge converter for conventional SRM. Originality/value – This paper proposes a new SRM with the double-layer distributed windings driven by a standard full bridge inverter. In order to calculate dynamic characteristics of the new SRM, a co-simulation method using FEM and Simulink is proposed to simulate the new SRM drive, where the power inverter and the current chopping control algorithm are implemented.

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Gao, Jie, He Xu Sun, Bing Gao, Lin He, and Yan Dong. "Modeling of the Power Factor Correction of 8/6 Poles Switched Reluctance Motors." Advanced Materials Research 505 (April 2012): 209–15. http://dx.doi.org/10.4028/www.scientific.net/amr.505.209.

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In the traditional power topology structure of switched reluctance motor (SRM), the ideal DC bus voltage is supplied by the circuit which is composed by a rectifier bridge and a filter capacitor. The capacitor is usually large to reduce the torque ripple, so the conducting time of AC source is very short and the power factor is reductive. A novel power topology structure of SRM is presented in this paper, and it is applied to the traditional split-phase structure to carry out power factor correction (PFC). This paper sets up the two-phase simultaneous excitation of four phases 8/6 poles SRD based on MATLAB/SIMULINK, and analyzes the current, voltage, torque etc. of two-phase excitation. The simulation results proves that the novel topology is not only improving the power factor but also optimizing the motor starting performance and efficiency, and it provides a feasible way for the study of energy conservation and efficient SRM.

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Sun, Guan Qun, and Bin Rui Wang. "Fuzzy Control Technology for Drive System of Switched Reluctance Motor." Advanced Materials Research 383-390 (November 2011): 285–89. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.285.

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A fuzzy self-correction controller based on DSP (TMS320LF240) micro-controller was designed to solve the problem that traditional controller can’t meet the random disturbance parameters of reluctance motor having notable nonlinear. Parameters could be automatically adjusted and response is rapid. According to the demand that two windings provide electric power at the same time for switched reluctance motor (SR motor), the system adopted Mamdani model with two inputs, MAXMIN barycenter technique was used for judging manner. Fuzzy research table and driving software were designed. Experiment results with a 5.5KW SR motor illustrated that the four phases SRD with fuzzy control technology proposed in this paper has excellent driving character.

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Zhu, Yueying, Weiyan Wei, Chuantian Yang, and Yan Zhang. "Multi‐objective optimisation design of two‐phase excitation switched reluctance motor for electric vehicles." IET Electric Power Applications 12, no. 7 (2018): 929–37. http://dx.doi.org/10.1049/iet-epa.2018.0046.

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Bogusz, Piotr, Mariusz Korkosz, and Jan Prokop. "Control method of high-speed switched reluctance motor with an asymmetric rotor magnetic circuit." Archives of Electrical Engineering 65, no. 4 (2016): 685–701. http://dx.doi.org/10.1515/aee-2016-0048.

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Abstract In the paper, the modified (compared to the classical asymmetric half-bridge) converter for a switched reluctance machine with an asymmetric rotor magnetic circuit was analysed. An analysis for two various structures of switched reluctance motors was conducted. The rotor shaping was used to obtain required start-up torque or/and to obtain less electromagnetic torque ripple. The discussed converter gives a possibility to turn a phase off much later while reduced time of a current flows in a negative slope of inductance. The results of the research in the form of waveforms of currents, voltages and electromagnetic torque were presented. Conclusions were formulated concerning the comparison of the characteristics of SRM supplied by the classic converter and by the one supplied by the analysed converter.

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Lorencki, Jakub, Stanisław Radkowski, and Szymon Gontarz. "Diagnostically Oriented Experiments and Modelling of Switched Reluctance Motor Dynamic Eccentricity." Sensors 21, no. 11 (2021): 3857. http://dx.doi.org/10.3390/s21113857.

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The article compares the results of experimental and modelling research of switched reluctance motor at two different operational states: one proper and one with mechanical fault, i.e., with dynamic eccentricity of the rotor. The experiments were carried out on a test bench and then the results were compared with mathematical modelling of quasi-static and dynamic analysis of 2D geometry model. Finally, it was examined how the operation with dynamic eccentricity fault of the motor affected its main physical parameter—the phase current. The analysis was presented in the frequency domain using the Fast Fourier Transform (FFT); however, individual current waveforms in the time domain are also shown for comparison. Applying results of the research could increase reliability of the maintenance of SRM and enhance its application in vehicles for special purposes as well as its military and industrial applications.

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Sohrabinasab, Yousuf, and Babak Ganji. "A comprehensive electromagnetic simulation model for switched reluctance motor operating under multiphase excitation." Engineering review 39, no. 3 (2019): 302–9. http://dx.doi.org/10.30765/er.39.3.11.

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In the present paper, a comprehensive electromagnetic simulation model based on finite element method (FEM) is introduced for the switched reluctance motor (SRM) by which important electromagnetic characteristics are predicted for the multiphase excitation mode. The inputs of the model are the design data and control parameters and it considers different arrangements of the phase winding connections. The simulation model is developed totally in ANSYS parametric design language (APDL) as a parametric model and it can be used easily for different types of the SRM. Carrying out 2D finite element transient analysis in the simulation model, flux density waveforms within the motor are predicted and a procedure is developed for core loss determination of the SRM operating under multiphase excitation. Applying the introduced simulation model to an 8/6 SRM, simulation results are presented for operation with simultaneous two- phase excitation.

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Tomczewski, Krzysztof, Krzysztof Wrobel, Daniel Rataj, and Grzegorz Trzmiel. "A Switched Reluctance Motor Drive Controller Based on an FPGA Device with a Complex PID Regulator." Energies 14, no. 5 (2021): 1423. http://dx.doi.org/10.3390/en14051423.

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This paper presents a proposal for a new type of regulator for switched reluctance motor (SRM) drives. The proposed regulator enables a significant extension of the rotational speed range and drive output power. This regulator is characterized by a complex structure, including two regulation modules: voltage and phase supply switch-on angle. The voltage module includes a proportional integral derivative (PID) voltage regulator. During its operation, the value of the phase supply switch-on angle and the width of the phase supply range are determined as a result of interpolation of the data previously determined in the simulation program. The other module contains the PID controller of the phase supply switch-on angle. The values of the angles included in the tables have been determined so as to ensure that the drive works with the greatest possible efficiency. The control method is determined based on the current operating parameters of the drive, i.e., torque and speed. The operation of the regulator was simulated in the MATLAB Simulink program. The regulator presented here was implemented in a field programmable gate array (FPGA). Tests of the regulator’s operation in the prototype system were carried out in the field of control of commutation angles.

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Chen, Hung-Chi, Wei-An Wang, and Bo-Wei Huang. "Integrated Driving/Charging/Discharging Battery-Powered Four-Phase Switched Reluctance Motor Drive With Two Current Sensors." IEEE Transactions on Power Electronics 34, no. 6 (2019): 5019–22. http://dx.doi.org/10.1109/tpel.2018.2880259.

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Farshad, M., J. Faiz, and C. Lucas. "Development of analytical models of switched reluctance motor in two-phase excitation mode: extended Miller model." IEEE Transactions on Magnetics 41, no. 6 (2005): 2145–55. http://dx.doi.org/10.1109/tmag.2005.848323.

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Davarpanah, Gholamreza, Sajjad Mohammadi, and James L. Kirtley. "A Novel 8/10 Two-Phase Switched Reluctance Motor With Enhanced Performance: Analysis and Experimental Study." IEEE Transactions on Industry Applications 55, no. 4 (2019): 3402–10. http://dx.doi.org/10.1109/tia.2019.2908952.

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Pinto, M. B. S., G. P. Viajante, E. N. Chaves, M. A. A. Freitas, M. E. Oliveira, and J. A. Santos. "Comparative Analysis of Dynamic Performance Between Switched Reluctance Motors 6x4 and 8x6." Renewable Energy and Power Quality Journal 19 (September 2021): 282–86. http://dx.doi.org/10.24084/repqj19.276.

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This paper presents a comparative study between the Switched Reluctance Machine (SRM) 8x6 and 6x4 operating as a motor with both 60kW of power. The computer simulation was performed in Matlab™ / Simulink® environment and allowed the machine behavior under various operating conditions to be verified. This work made it possible to evaluate: phase voltage and current, speed, torque and efficiency. Comparative results between the two machines will be presented and discussed.

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Yang, Chen-Wei, Min-Ze Lu, Wei-Ming Ma, and Chang-Ming Liaw. "A Switched-Reluctance Motor Drive Powered by Switch-Mode Rectifier with Battery Energy Storage Buffer." Journal of Energy and Power Technology 03, no. 02 (2020): 1. http://dx.doi.org/10.21926/jept.2102016.

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This paper presents a three-phase full-bridge boost switch-mode rectifier (SMR) powered switched-reluctance motor (SRM) drive with battery energy storage buffer. It covers the designing of the power circuits and control schemes for the two power stages. Except for having a superior line-drawn power quality, the boost-able DC-link voltage of the SRM drive can enhance the SRM driving performance in a wide speed range and sent back the recovered regenerative braking energy to the grid successfully. The next is establishing a battery energy storage system (BESS) with a bidirectional interface DC-DC converter connected to the motor drive DC-link for providing an energy buffer. The proposed parallel operation strategy has three possible inter-connected operations. (i) Grid-to-battery (G2B) charging: The battery charged by the grid with a good line drawn power quality. (ii) B2G discharging operation: The battery sending power back to the grid by the interface converter and the SMR. (iii) Battery buffer operation: Powering of the SRM drive simultaneously by the utility grid and the battery with the proposed parallel operation strategy.

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de la Guerra, Alejandra, Victor M. Jimenez-Mondragon, Lizeth Torres, Rafael Escarela-Perez, and Juan C. Olivares-Galvan. "On-Line Open-Phase Fault Detection Method for Switched Reluctance Motors with Bus Current Measurement." Actuators 9, no. 4 (2020): 117. http://dx.doi.org/10.3390/act9040117.

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This article introduces an on-line fault diagnosis (FD) system to detect and recognize open-phase faults in switched reluctance motors (SRMs). Both tasks, detection and recognition, are based on functions built with the same information but from different sources. Specifically, these functions are constructed from bus current measurement provided by a sensor and from the estimate of such a current provided by an extended Kalman filter (EKF) that performs the estimation from only rotor angular position measurements. In short, the FD system only requires two measurements for employment: bus current and angular position. In order to show its efficacy, results from numerical simulations (performed in a virtual test bench) are presented. Specifically, these simulations involve the dynamics of the SRM, including the magnetic phenomena caused by the analyzed faults. The motor dynamics were obtained with finite element simulations, which guarantee results close to the actual ones.

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El-Sayed Ahmed Ibrahim, Hassan, Mohamed Said Sayed Ahmed, and Khaled Mohamed Awad. "Speed control of switched reluctance motor using genetic algorithm and ant colony based on optimizing PID controller." ITM Web of Conferences 16 (2018): 01001. http://dx.doi.org/10.1051/itmconf/20181601001.

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Proportional-Integral-Derivative control is the most used kind of control which provides the simplest and most effective solution to different kinds of control engineering applications. But until now PID controller is poorly tuned in real life and online applications. While most of PID tuning is done manually. Switched reluctance motor (SRM) has highly nonlinear characteristics since the developed/produced torque of the motor has a nonlinear function on both phase current and rotor position. These nonlinearities of the SRM drives make the conventional PID (proportional + integral + Derivative) controller a poor choice for application where high dynamic performance is desired under all motor operating conditions. research paper comes up with two artificial and hybrid techniques involving Genetic Algorithm (GA) and Ant Colony Optimization (ACO). Those techniques where used to tune the PID parameters for the switched reluctance motor (SRM) and its performance were compared with the conventional method of “Ziegler Nichols. The results obtained reflects that, the use of those algorithms based controller improves the performance of the whole process in terms of a fast set point tracking and regulatory changes and also provides an optimum stability for the system itself with a minimum overshoot on the output signal.

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N C, Lenin, and Arvind S V. "Vibration Analysis of Tapered Pole Linear Switched Reluctance Machine." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 2 (2017): 957. http://dx.doi.org/10.11591/ijpeds.v8.i2.pp957-962.

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The Vibration is one of the major problem in linear switched reluctance motors (LSRMs). This paper present a detailed analysis of vibration in a two phase LSRM and proposes a new structure to reduce the effect. The experimental results of this paper prove that the proposed structure is well suited for conveyor application.

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Chen, Qian, Dezhi Xu, Liang Xu, Jian Wang, Zhipeng Lin, and Xuhui Zhu. "Fault-Tolerant Operation of a Novel Dual-Channel Switched Reluctance Motor Using Two 3-Phase Standard Inverters." IEEE Transactions on Applied Superconductivity 28, no. 3 (2018): 1–5. http://dx.doi.org/10.1109/tasc.2018.2799838.

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He, Lin, Jie Bai, He Xu Sun, and Jie Gao. "A Rotor Position Detection Method of SRM by Measuring Mutually Induced Voltages." Advanced Materials Research 462 (February 2012): 757–62. http://dx.doi.org/10.4028/www.scientific.net/amr.462.757.

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This paper describes a method of indirect rotor position measuring for sensorless SRM. The principle is based on measuring the mutually induced voltage in the two inactive phase which is adjacent to the energized phase of the SRM. The mutual voltage in the inactive phase, induced due to the current in the active phase, varies with the position of the rotor. In this paper the SRM was seen as a Differential transformer. One phase was chosen as the primary coil of the transformer, and the adjacent two phases were the Secondary coils. The two Secondary coils were connected in anti-series. A sine wave signal was poured to the primary coil and then we measured the mutual-inductance voltage and processed in a microcontroller to estimate the position of the rotor. The feasibility of the method was proved by an experiment of 8/6 pole four-phase switched reluctance motor.

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Zhang, Fengge, Jiayi Fan, Jin-Woo Ahn, and Dong-Hee Lee. "A torque control strategy for a two-phase switched reluctance motor based on dynamic ranking of voltage vectors." Journal of Physics: Conference Series 1074 (September 2018): 012139. http://dx.doi.org/10.1088/1742-6596/1074/1/012139.

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Torkaman, Hossein, Noushin Faraji, and Mohammad Sedigh Toulabi. "Influence of Rotor Structure on Fault Diagnosis Indices in Two-Phase Switched Reluctance Motors." IEEE Transactions on Magnetics 50, no. 3 (2014): 136–43. http://dx.doi.org/10.1109/tmag.2013.2285882.

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Gaafar, Mahmoud A., Arwa Abdelmaksoud, Mohamed Orabi, Hao Chen, and Mostafa Dardeer. "Performance Investigation of Switched Reluctance Motor Driven by Quasi-Z-Source Integrated Multiport Converter with Different Switching Algorithms." Sustainability 13, no. 17 (2021): 9517. http://dx.doi.org/10.3390/su13179517.

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Switched reluctance machines (SRMs) have received increasing attention for their many potential uses, such as for wind power and electric vehicle (EV) drive systems. The Quasi-Z-source Integrated Multiport Converter (QZIMPC) was recently introduced to improve the reliability of the SRM driver through small capacitance values. It is not possible, however, to simultaneously energize and deenergize two SRM phases in QZIMPC. This phenomenon can significantly increase the commutation period which, in turn, degrades the performance of SRM; in addition, this causes high-voltage ripples on the converter’s capacitors. Two switching algorithms are introduced and applied in this paper, and their performance with SRM is investigated in terms of torque ripple and peak phase current. The algorithms are based on prioritizing the control command in the on-going and off-going phases to fulfill the required load torque, as well as to accelerate the commutation process where possible. This is achieved without the interference of high-level controllers, which include speed controllers and/or torque ripple minimization. Through the simulation results, a comparison between the two switching algorithms is presented to determine their potential to improve the SRM drive system’s performance.

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Han, Shouyi, Chuang Liu, Xiaodong Sun, and Kaikai Diao. "An effective method of verifying poles polarities in switched reluctance motors." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 38, no. 2 (2019): 927–38. http://dx.doi.org/10.1108/compel-10-2018-0400.

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Purpose This paper aims to propose an effective method to verify poles polarities of switched reluctance motors (SRMs). Different from the ways of detection poles polarities by permanent magnet in SRMs, the difference of self-inductance between different winding connections is used to verify the pole polarity. Design/methodology/approach First, the winding connections with the forward and reverse series are proposed. The magnetic circuit models are established to analyze the flux linkage of different winding connections. Then, according to the difference of inductance characteristics, including the self-inductance and the mutual inductance affected by the adjacent poles, it is theoretically feasible to verify the polarity of each pole. Finally, the proposed method is verified by the simulation and experiment on a six-phase SRM. Findings First, compared to the reverse series, the forward series can produce larger self-inductance when one phase is excited at the same current excitation, which can be used to verify the poles polarities of one phase with different winding connection. Second, the mutual inductance can be used to distinguish the winding connections. Third, the difference of the maximum self-inductance of the winding, which is composed of two adjacent windings, can be used to verify the polarities of the adjacent poles. Originality/value This paper proposes an effective method to verify poles polarities of SRMs.

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Torkaman, Hossein, and Ebrahim Afjei. "COMPARISON OF THREE NOVEL TYPES OF TWO-PHASE SWITCHED RELUCTANCE MOTORS USING FINITE ELEMENT METHOD." Progress In Electromagnetics Research 125 (2012): 151–64. http://dx.doi.org/10.2528/pier12010407.

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Michaelides, A., C. Pollock, and C. Jolliffe. "Analytical computation of minimum and maximum inductances in single and two phase switched reluctance motors." IEEE Transactions on Magnetics 33, no. 2 (1997): 2037–40. http://dx.doi.org/10.1109/20.582711.

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Fabianski, Bogdan, and Krzysztof Zawirski. "Parameter adaptation of simplified switched reluctance motor model using Newton and Gauss-Newton signal fitting methods." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 36, no. 3 (2017): 602–18. http://dx.doi.org/10.1108/compel-10-2016-0446.

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Purpose The paper is concerned about parameter adaptation of a novel, simplified and nonlinear switched reluctance motor (SRM) model. The purpose of the presented on-line procedure is to give an opportunity to set the model parameters’ values to obtain a relatively good convergence with the real control object. This is important when a reference model is used for control (e.g. optimal) or object state classification (e.g. fault detection) purposes. The more convergent the real object model is, the better operation quality may be expected. Design/methodology/approach In the paper, a 12/8 pole’s SRM as a control object is analyzed. The model equations were verified experimentally by comparing phase current model estimations with reference (measured) ones at different operational points. Differential equations of motor winding currents were chosen as an approximation function in the fitting (parameter adaptation) process using the Newton and Gauss–Newton methods. The structure of the adaptation system is presented along with the implementation in simulation environment. Findings It was confirmed in the simulation tests that Newton and Gauss–Newton methods of nonlinear model parameters’ adaptation may be used for the SRM. The introduced fitting structure is well suited for implementation in real-time, embedded systems. The proposed approximation function could be used in process as an expansion to Jacobian and Hessian matrices. The χ2 (chi2) coefficient (commonly used to measure the quality of the signal fitting) reduced to a low value during the adaptation process. Another introduced quality coefficient shows that the Newton method is slightly better in scope of the entire adaptation process time; however, it needs more computational power. Research limitations/implications The proposed structure and approximation function formula in the parameters’ adaptation system is appropriate for sinusoidal distribution of the motor phase inductance value along the rotor angle position. The inductance angular shape is an implication of the mechanical construction – with appropriate dimensions and materials used. In the presented case, the referenced model is a three-phase SRM in 12/8 poles configuration used as a main drive part of Maytag Neptune washing machine produced by Emerson Motors. Practical implications The presented method of parameter adaptation for novel, simplified and nonlinear SRM model provides an opportunity for its use in embedded, real-time control systems. The convergent motor model, after the fitting procedure (when the estimations are close to the measurements from real object), may be used for solving many well-known control challenges such as detection of initial rotor position, sensorless control, optimal control, fault-tolerant control end in fault detection (FD) systems. The reference model may be used in FD in the way of deducing signals from the difference between the estimated and measured ones. Originality/value The paper proposed a new system of parameter adaptation for the evaluated nonlinear, simplified 12/8 poles SRM model. The relative simplicity of the proposed model equations provides the possibility of implementing an adaptation system in an embedded system that works in a real-time regime. A Two adaptation methods – Newton and Gauss–Newton – have been compared. The obtained results shown that the Newton fitting method is better in the way of the used quality indicator, but it consumes more computational power.

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Tsai, Mi-Ching. "Application of H∞ Control to Improve the Current and Speed Loops of Switched Reluctance Motor Drives." Journal of Dynamic Systems, Measurement, and Control 123, no. 3 (2000): 363–69. http://dx.doi.org/10.1115/1.1387016.

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In this paper the H∞ robust control technique is applied to design a switched reluctance motor drive where the rotor position sensor provides just six pulses per revolution. A control system analyzer is used to obtain the frequency responses at each design step. To reduce the effect of the inherent phase inductance variations, an H∞ two-degree-of-freedom control scheme is designed in the current-loop of the drive to achieve the demanding time-response specifications. In order to have a good load torque disturbance rejection ability, the H∞ loop shaping procedure is employed to construct a lead-lag type controller in the speed-loop of the drive. The designed H∞ controllers are evaluated in real-time experiments with a digital signal processor (DSP). The results demonstrate the effectiveness of the proposed strategy in comparison with that of a conventional design.

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Siadatan, A., E. Afjei, H. Torkaman, and M. Rafie. "Design, simulation and experimental results for a novel type of two-layer 6/4 three-phase switched reluctance motor/generator." Energy Conversion and Management 71 (July 2013): 199–207. http://dx.doi.org/10.1016/j.enconman.2013.03.011.

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He, Lin, He Xu Sun, Jie Gao, and Jie Bai. "A Simple Method to Detect the Initial Position for Sensorless SRM." Advanced Materials Research 468-471 (February 2012): 281–85. http://dx.doi.org/10.4028/www.scientific.net/amr.468-471.281.

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The initial rotor position of SRM is the key to achieve no-reversing starter. There are some methods to detect the initial position of sensorless SRM. For example, phase current method, phase inductance method, test coil method and so on. In this paper we researched the relationship between the mutual inductance and rotor’s position in SRM. A new initial position detection method of sensor less SRM, which add a excitation pulse with a small value to the stator windings , then detect the value of the mutual inductance voltage of the two adjacent phase to determine the initial position of the rotor is given by this paper. And we designed the hardware to achieve this method. The feasibility and reliability of the method is proved by experiment of 8/6 pole four-phase switched reluctance motor.

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Marcsa, D. "Rotational Motion Modelling for Numerical Analysis of Electric Machines." Acta Technica Jaurinensis 10, no. 2 (2017): 124. http://dx.doi.org/10.14513/actatechjaur.v10.n2.437.

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The paper presents a brief review of the movement modelling methods of electric machines and the two most common used torque calculation techniques. After the classification of single-layer moving band methods, a low computation cost and an easily realisable new variant of this movement modelling technique is proposed. To study the accuracy of proposed moving band technique equipped with Arkkio's method and Maxwell's stress tensor method for torque calculation an international benchmark problem used. Further, to check the applicability, the proposed method has been used to analyse a three-phase switched reluctance motor. The results of proposed method have been compared to analytical and numerical results.

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Okada, Takeshi, Takashi Kosaka, Hiroaki Matsumori, and Nobuyuki Matsui. "Comparative Study on Hybrid Excitation Flux Switching Motors without and with Variably Magnetizable Permanent Magnets for Electrified Vehicle Propulsion." World Electric Vehicle Journal 12, no. 2 (2021): 58. http://dx.doi.org/10.3390/wevj12020058.

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A demand for high efficiency traction motors has been accelerated by the promotion of electrified vehicles, such as battery and fuel cell electric vehicles. As a part of development of the high efficiency traction motor, this paper reports a comparative study on two kinds of hybrid excitation flux switching motors (HEFSM) as a variable flux machine. One is the conventional HEFSM, which consists of a stator with constantly magnetized-permanent magnets, field excitation coils (FECs) and three-phase armature windings, and a rotor with salient poles like a switched reluctance motor. The other is a HEFSM employing variably magnetizable-permanent magnets (VM-PMs) that replace a part in the FEC slot area in the conventional one. Based on the variable magnetization nature of VM-PMs, the latter HEFSM promises that the replacement of magnetomotive force (mmf) of FECs with that of the VM-PMs makes the motor efficiency better at both low- and high-speed under the low-torque condition, that is, at both urban driving or highway cruising. To verify that, finite element analysis- (FEA)-based design simulations, as well as experimental performance evaluations for the two kinds of HEFSM, were conducted under reasonable dimensional and electrical constraints. As a result, it is shown that the latter HEFSM can achieve higher motor efficiency at the low-torque and high-speed region while keeping the motor efficiency at the low-torque and low-speed region.

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Korkosz, M., P. Bogusz, J. Prokop, B. Pakla, and G. Podskarbi. "Comparative Analysis of Fault-Tolerant Dual-Channel BLDC and SR Motors." Energies 12, no. 13 (2019): 2489. http://dx.doi.org/10.3390/en12132489.

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This article presents the results of a comparative analysis of two electronically commutated brushless direct current machines intended for fault-tolerant drives. Two machines designed by the authors were compared: a 12/14 dual-channel brushless direct current motor (DCBLDCM) with permanent magnets and a 12/8 dual-channel switched reluctance motor (DCSRM). Information is provided here on the winding configuration, the parameters, and the power converters of both machines. We developed mathematical models of the DCBLDCM and DCSRM which accounted for the nonlinearity of their magnetization characteristics in dual-channel operation (DCO) and single-channel operation (SCO) modes. The static torque characteristics and flux characteristics of both machines were compared for operation in DCO and SCO modes. The waveforms of the current and the electromagnetic torque are presented for DCO and SCO operating conditions. For DCO mode, an analysis of the behavior of both machines under fault conditions (i.e., asymmetrical control, shorted coil, and open phase) was performed. The two designs were compared, and their strengths and weaknesses were indicated.

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Sun, Xiaodong, Zhuicai Zhou, Long Chen, Zebin Yang, and Shouyi Han. "Performance analysis of segmented rotor switched reluctance motors with three types of winding connections for belt-driven starter generators of hybrid electric vehicles." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 37, no. 3 (2018): 1258–70. http://dx.doi.org/10.1108/compel-08-2017-0342.

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Purpose Inductance, torque and iron loss are the key parameters of switched reluctance motors for belt-driven starter generators. This paper aims to present the analysis of a segmented rotor switched reluctance motor (SSRM) with three types of winding connections for hybrid electric vehicle applications by using a two-dimensional finite element method. Design/methodology/approach The rotor of the studied SSRM consists of a series of discrete segments, while the stator is made up of exciting and auxiliary teeth. First, the concept and structures of the different winding connections are introduced. Then, the magnetic flux path of the three types of winding connections for the SSRM is described. Second, the magnetic flux distributions in the three parts, i.e. the stator yoke, the stator tooth and the rotor segment, are described in detail to calculate the iron losses. Third, three SSRMs with the different winding arrangements are analyzed and compared to evaluate the distinct features of the studied SSRM. The analysis and comparison mainly include self-inductances, mutual inductances, phase currents, output torque and iron loss. Findings It is found that the self-inductances of the three types of winding connections are almost equal, and only the SSRM1 has a positive mutual inductance. In addition, the current waveforms of SSRM1 and SSRM2 are regular. However, it is irregular in SSRM3. It is shown that SSRM1 has better characteristics, such as higher output torque, high power density, lower torque ripple and iron loss. Originality/value This paper proposes and analyzes three novel winding connections for the SSRM to provide guidance for enhancing the output torque and reducing the iron loss to achieve high efficiency.

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Jia, Zi Fei, De An Zhao, and Yu Yan Zhao. "Sensorless Control of Switched Reluctance Motors Based on Pulse Injection, Position Sectors Divided and Variable Thresholds." Advanced Materials Research 989-994 (July 2014): 3252–57. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.3252.

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To realize starting operation and reduce position estimation error of switched reluctance motor (SRM) without position sensor, a novel control method based on pulse injection, divided angle section and variable threshold is presented. The starting operation of SRM can be accomplished by injecting high frequency pulse and judging position sectors. Variable threshold is used to reduce position estimation error. The value of threshold is obtained by looking up table prestored in controller. The method avoids complicated mathematical model and is suitable for starting operation with two phases. Besides, rotor position estimation error of this method is analyzed and the method which can decreased the error is proposed. At last, the experiment has been done to verify the performance of the control method.

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Ma, Qingqing, Baoming Ge, Daqiang Bi, Fernando J.T.E. Ferreira, and Aníbal T. de Almeida. "A new modeling method for S-MCSRM driven by three-phase full bridge converter." COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 33, no. 1/2 (2013): 645–62. http://dx.doi.org/10.1108/compel-02-2013-0063.

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Purpose – The S-MCSRM is a two-phase excited switched reluctance motor (SRM), with the short flux path and mutual inductance coupling, which is suitable for the oil submersible pump application owing to large torque and three-wire connection with the standard full-bridge power converter. However, there is not literature to disclose its model due to the complicated mutual inductance coupling. The FEM model is a time-consuming method to analyze this motor. For the first time, this paper aims to propose an S-MCSRM model for performance analysis and control method developing. The proposed model would save simulation time and be a theoretical fundamental for further implementing control algorithm. Design/methodology/approach – The S-MCSRM's operating principle is analyzed, and the voltage equation and the generated torque are deduced. The FEM is utilized to obtain the five typical magnetization curves that describe the S-MCSRM's magnetic path characteristic. The magnetic co-energy equation, phase torque and total torque equations are obtained. From the basic voltage equation, the S-MCSRM's state space model is built for the dynamic analysis and control purpose. The S-MCSRM is widely analyzed in detail by using the proposed model and comparison with the conventional SRM. JMAG finite element package is used to verify the proposed model. Findings – The proposed modeling method is validated by the identical results to those from FEM-based JMAG software. The proposed model just takes second-level time, which is far less than minute-level time consuming of FEM method. The S-MCSRM generates larger torque than the conventional SRM, with three-wire and standard full bridge power converter, and it is confirmed that the S-MCSRM is suitable for the oil submersible pump applications. Originality/value – This paper proposes a new modeling method for the S-MCSRM to exactly analyze the motor's operating performances, and also it is a theoretical fundamental for developing control algorithm. The proposed model saves much time in analysis, calculation, and simulation, when compared to the FEM method. The completed analysis including flux linkages, torque, torque-ripple, and torque-speed characteristic discloses the S-MCSRM's steady-state operating performances, which provides the deep insight for this kind of motor's applications.

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Stephenson, J. M., and G. C. Jenkinson. "Single-phase switched reluctance motor design." IEE Proceedings - Electric Power Applications 147, no. 2 (2000): 131. http://dx.doi.org/10.1049/ip-epa:20000176.

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Ahn, Jin-Woo, and Dong-Hee Lee. "Performance of Passive Boost Switched Reluctance Converter for Single-phase Switched Reluctance Motor." Journal of Electrical Engineering and Technology 6, no. 4 (2011): 505–12. http://dx.doi.org/10.5370/jeet.2011.6.4.505.

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Journal articles on the topic 'Two Phase Switched Reluctance Motor'

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