Journal
IEEE TRANSACTIONS ON ENERGY CONVERSION
Volume 38, Issue 2, Pages 1292-1299Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TEC.2022.3231188
Keywords
Torque; Stators; Rotors; Reluctance motors; Magnetic flux; Windings; Saturation magnetization; DSSRM; mechanical offset; optimal design
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Compared to conventional switched reluctance motors, the double stator switched reluctance motor (DSSRM) has higher motional force density. However, it still suffers from higher levels of torque pulsation. To solve this issue, the inner and outer stators of a four phase 8/6/8 DSSRM have been optimally misaligned, resulting in a tangible reduction in torque pulsation with minimal impact on average torque.
High motional force density is a characteristic of the double stator switched reluctancemotor (DSSRM) when compared to conventional switched reluctance motors (SRM). Amid this major accomplishment that places DSSRM in par with interior permanent magnet synchronous machines in terms of torque and power density, it still suffers from higher levels of torque pulsation. To substantially reduce torque pulsation in DSSRM without penalizing the average torque the inner and outer stators have been optimally misaligned. This process has been applied to a four phase 8/6/8 DSSRM through detailed finite element analysis (FEA) and experimental verification. By considering the operation under unsaturated and saturated conditions, it has been proven that tangible reduction in torque pulsation with minimal impact on average torque can be achieved.
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