Torque Ripple Suppression Based on Optimal Harmonic Current Injection in Dual Three-Phase PMSMs Under Magnetic Saturation

Dual three-phase permanent magnet synchronous machines (DTP-PMSMs) have received increasing attention from the industry and academia due to their advantages in lower burden on power inverters when operating in high power applications compared to the three-phase counterparts and low torque ripples. I...

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Bibliographic Details
Published inIEEE transactions on industrial electronics (1982) Vol. 69; no. 6; pp. 5398 - 5408
Main Authors Zheng, Boyuan, Jibin, Zou, Xu, Yongxiang, Lang, Xiaoyu, Yu, Guodong
Format Journal Article
LanguageEnglish
Published New York IEEE 01.06.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
AC motor drives
Algorithms
Cross coupling
Current injection
Harmonic analysis
Iterative methods
Magnetic circuits
Magnetic flux
Magnetic saturation
Mathematical model
multiphase permanent magnet synchronous machines (PMSMs)
Permanent magnets
Ripples
Saturation magnetization
Synchronous machines
Torque
Torque measurement
torque ripple suppression
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Summary:Dual three-phase permanent magnet synchronous machines (DTP-PMSMs) have received increasing attention from the industry and academia due to their advantages in lower burden on power inverters when operating in high power applications compared to the three-phase counterparts and low torque ripples. In this article, it reveals that the favorable low torque ripple characteristic of DTP-PMSM is undermined in the high power and overload operating mode. To solve this problem, this article proposes a novel torque ripple suppression strategy based on optimal harmonic current injection. A mathematical torque ripple model of DTP-PMSM considering the cross-coupling effects between d-q axis and dq - z 1 z 2 axis is built. And based on this model, a detailed analysis is carried out to obtain the optimal harmonic current. The theoretical analysis also guarantees that the induced machine loss is minimum. Moreover, the proposed strategy has good dynamic performance since the algorithm involves no iterative computation and is computationally effective, which is proved on a laboratory DTP-PMSM system. The effect of parameter variation is also discussed and tested. The experiment results prove that the influence of magnetic saturation on torque ripple can be effectively suppressed.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2021.3088361