An Improved Torque Sharing Function to Minimize Torque Ripple and Increase Average Torque for Switched Reluctance Motor Drives

Üstün, Oğuz; Önder, Mithat

doi:10.1080/15325008.2020.1797939

Cited by 11 publications

(10 citation statements)

References 29 publications

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“…A novel torque ripple minimization method was presented in [96] by using the genetic algorithm (GA). Using the rising and falling angles, instead of overlapping angle, a new sinusoidal TSF is improved to minimize the copper losses and the torque ripple.…”

Section: Srm Control Methodsmentioning

confidence: 99%

Switched Reluctance Motors and Drive Systems for Electric Vehicle Powertrains: State of the Art Analysis and Future Trends

et al. 2021

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This paper presents a detailed literature review on switched reluctance motor (SRM) and drive systems in electric vehicle (EV) powertrains. SRMs have received increasing attention for EV applications owing to their reliable structure, fault tolerance ability and magnet free design. The main drawbacks of the SRM are torque ripple, low power density, low power factor and small extended speed range. Recent research shows that multi-stack conventional switched reluctance motors (MSCSRM) and multi-stack switched reluctance motors with a segmental rotor (MSSRM-SR) are promising alternative solutions to reduce torque ripples, increase torque density and increase power factor. Different winding configurations such as single-layer concentrated winding (SLC), single layer mutually coupled winding (SLMC), double layer concentrated winding (DLC), double layer mutually coupled winding (DLMC) and fully-pitched winding (FP) are introduced in the literature in recent years to increase average torque and to decrease torque ripples. This research analyzes winding methods and structure of the SRMs, including conventional and segmental rotors. They have been compared and assessed in detail evaluation of torque ripple reduction, torque/power density increase, noise/vibration characteristics and mechanical structure. In addition, various drive systems are fully addressed for the SRMs, including conventional drives, soft-switching drives, drives with standard inverters and drives with an integrated battery charger. In this paper, the SRM control methods are also reviewed and classified. These control methods include strategies of torque ripple reduction, fault-diagnosis, fault-tolerance techniques and sensorless control. The key contributions of this paper provide a useful basis for detailed analysis of modeling and electromechanical design, drive systems, and control techniques of the SRMs for EV applications.

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Section: Srm Control Methodsmentioning

confidence: 99%

Switched Reluctance Motors and Drive Systems for Electric Vehicle Powertrains: State of the Art Analysis and Future Trends

et al. 2021

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“…There are two ways to achieve these goals. One is to optimize the structure and magnetic circuit design of the motor [3,[8][9][10][11][12], and the other is to implement sophisticated motor control [4,[13][14][15][16][17][18][19][20]. Authors in [8] changed the stator and rotor geometry by attaching feet to the poles to improve the average torque production with ripple minimization.…”

Section: Introductionmentioning

confidence: 99%

“…C. Gan et al [4] provide a review of control techniques and group them into (1) current and angle modulation, (2) average torque control (ATC) and direct torque control (DTC), (3) torque sharing function (TSF)-based control, (4) feedback linearization control, (5) iterative learning control, and (6) intelligent control. Several authors have reported torque sharing functions as a practical approach to implementing torque ripple minimization by prescribing the torque command value for each energized phase during the transition [13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…According to [19], TSFs have been among the most widely used methods in the literature to minimize torque ripple.…”

Section: Introductionmentioning

confidence: 99%

“…Linear, cubic, sinusoidal, and exponential TSFs were compared in [13,17]. These functions simplify motor control by parameterizing the torque waveforms using two [21] to four parameters in [19] to independently shape the rising and falling parts. However, the functions have inherent torque and current tracking error as they do not incorporate the limitation of winding current dynamics.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of the Rotor Geometry on Efficiency and Torque Ripple of Switched Reluctance Motor Controlled by Optimized Torque Sharing Functions

Ferková

Bober

2023

Machines

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Torque sharing function (TSF)-based switched reluctance motor (SRM) control is an effective approach to minimize torque ripple and maximize efficiency. This study investigated the influence of the rotor geometry to overcome the inherent torque and current tracking error of used TSFs. Parameters of the TSF were optimized according to several objectives. A finite element method simulation model of the motor was built and verified to evaluate the objective functions. The optimization result is a set of functions that calculate optimal values of the start angle and overlap angle of the sinusoidal TSF for every operating point of the motor. Different objectives, including efficiency and a torque ripple, lead to different functions for calculating start and overlap angles. The research showed that if efficiency is the most important objective, it is possible to determine a suitable rotor pole geometry. For other criteria, the choice of rotor geometry is not so clear-cut and requires consideration of the SRM operating modes.

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Torque Ripple Minimization and Radial Force Reduction for Switched Reluctance Motor Drive Using Offline Gaussian Torque Sharing Function

Divandari

Rezaie

Ranjbar-Noei

2022

J. Vib. Eng. Technol.

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An Improved Torque Sharing Function to Minimize Torque Ripple and Increase Average Torque for Switched Reluctance Motor Drives

Cited by 11 publications

References 29 publications

Switched Reluctance Motors and Drive Systems for Electric Vehicle Powertrains: State of the Art Analysis and Future Trends

Switched Reluctance Motors and Drive Systems for Electric Vehicle Powertrains: State of the Art Analysis and Future Trends

Influence of the Rotor Geometry on Efficiency and Torque Ripple of Switched Reluctance Motor Controlled by Optimized Torque Sharing Functions

Torque Ripple Minimization and Radial Force Reduction for Switched Reluctance Motor Drive Using Offline Gaussian Torque Sharing Function

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