Ripple Analysis and Reduction of a Dual-PM Direct-Drive Machine by a Harmonic Current Injection Approach

被引:0
作者
Ma, Yue [1 ]
Niu, Shuangxia [1 ]
Fu, Weinong [2 ]
Fei, Jiaqi [3 ]
Huang, Jiahui [1 ]
Zhang, Xiaodong [1 ]
Chan, C. C. [1 ]
机构
[1] Hong Kong Polytechinc Univ, Dept Elect & Elect Engn, Kowloon, Hong Kong 999077, Peoples R China
[2] Chinese Acad Sci, Dept Comp Sci & Control Engn, Shenzhen Inst Adv Technol, Shenzhen 518000, Guangdong, Peoples R China
[3] Hans Robot Hans Laser Smart Equipment Grp Co Ltd, Shenzhen 518000, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
Torque; Motors; Stators; Torque measurement; Rotors; Harmonic analysis; Stator windings; Cogging torque; dual-pm machine; harmonic current injection; mechanical tolerance; torque ripple; MAGNET VERNIER MACHINE; DESIGN; OPTIMIZATION; SUPPRESSION;
D O I
10.1109/TIA.2024.3429468
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The dual permanent magnet machine (DPMM) possesses the characteristics of high torque and low speed which is suitable for direct-drive equipment. Because of the low magnetic reluctance of this motor, the torque is very sensitive to dimensional tolerance. The torque ripple in a synchronous motor may result in noise and vibration. This research analyzes the torque ripple in several different scenarios on the precise model and model with partial random mechanical tolerances. Through derivation calculation and simulation analysis, it is found that the impact of mechanical tolerance on torque ripple can be predicted. It is proven that the impact of mechanical tolerances on torque ripple is significant through analysis. The torque harmonics brought by tolerances is a major part of torque ripple, and its impact is inevitable in the motor entity. In order to reduce the torque ripples, this paper proposes a harmonic current injection (HCI) method. HCI, as a feedforward compensation of the current loop, generates torque harmonics purposefully to counteract torque ripple. A DPMM with a split-tooth structure is simulated and tested in this paper to demonstrate the analysis of torque fluctuations and the effectiveness of HCI.
引用
收藏
页码:8642 / 8654
页数:13
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