RASP methods for achieving low torque pulsation in spoke‑type PM motors

Gaohong Xu; Jian Chen; Tang Tang; Maoen Tang; Qian Chen

RASP methods for achieving low torque pulsation in spoke‑type PM motors

Vol. 24, No. 6, pp. 978-988, Jun. 2024

10.1007/s43236-024-00780-x

Spoke-type

Permanent-magnet

Reshaped auxiliary salient poles

Torque pulsation

Average torque

Abstract

This paper proposes a new structure using reshaped assisted salient pole (RASP) methods to reduce the torque ripple of spoketype permanent magnet (PM) motors. During the structure improvement process, the size of the PMs remains unchanged, and the suitable object is the rotor core. First, the suppression of flux density harmonics by the ASP is demonstrated. For lower torque pulsation, the inverse cosine reshaped (ICR) ASP method is proposed. For higher average torque, the third harmonic is injected into the ICR ASP to generate the ICR + 3 ASP. Depending on the RASP method, it is possible to optimize the flux density harmonics, especially the harmonics that cause first-order torque pulsation. When compared with existing forminroposed method can achieve lower torqu and higher average torque. Finally, a prototype is manufactured and experimentally tested to demonstrate that the proposed RASP methods can provide low torque pulsation.

Statistics

Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.

Cite this article

[IEEE Style]

G. Xu, J. Chen, T. Tang, M. Tang, Q. Chen, "RASP methods for achieving low torque pulsation in spoke‑type PM motors," Journal of Power Electronics, vol. 24, no. 6, pp. 978-988, 2024. DOI: 10.1007/s43236-024-00780-x.

[ACM Style]

Gaohong Xu, Jian Chen, Tang Tang, Maoen Tang, and Qian Chen. 2024. RASP methods for achieving low torque pulsation in spoke‑type PM motors. Journal of Power Electronics, 24, 6, (2024), 978-988. DOI: 10.1007/s43236-024-00780-x.