Reduction in torque ripple by applying an asymmetric rotor to PMSM

In this study, an asymmetric rotor was developed to reduce the cogging torque and torque ripple regardless of the rotational direction and its driving point. Specifically, the rotor had a linear symmetric structure for bi‐rotation. In addition, a π‐shaped pole rotor was proposed as a new structure t...

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Bibliographic Details
Published in:	Electrical engineering in Japan Vol. 215; no. 1
Main Authors:	Ito, Makoto, Sugimoto, Shinji, Takahashi, Akeshi, Tamiya, Shuichi, Kushida, Takatoshi
Format:	Journal Article
Language:	English
Published:	Hoboken Wiley Subscription Services, Inc 01-03-2022
Subjects:	asymmetric rotor Asymmetry bi‐rotation. PMSM Cogging Driving conditions Magnetic saturation Ripples Rotors Torque torque ripple
Online Access:	Get full text
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Summary:	In this study, an asymmetric rotor was developed to reduce the cogging torque and torque ripple regardless of the rotational direction and its driving point. Specifically, the rotor had a linear symmetric structure for bi‐rotation. In addition, a π‐shaped pole rotor was proposed as a new structure to alleviate magnetic saturation at the edge parts of the rotor. Optimal design using the Rosenblock method revealed that the proposed structure can reduce the cogging torque and the torque ripple in a wide range of driving conditions.
Bibliography:	Denki Gakkai Ronbunshi D 10.1541/ieejias.141.445 Translated from Volume 141 Number 6, pages 445–452, DOI of IEEJ Transactions on Industry Applications
ISSN:	0424-7760 1520-6416
DOI:	10.1002/eej.23346