Calculation Model of Armature Reaction Magnetic Field of Interior Permanent Magnet Synchronous Motor With Segmented Skewed Poles

An, Yuansheng; Ma, Conggan; Zhang, Nic; Guo, Yue; Degano, Michele; Gerada, Chris; Bu, Feifei; Yin, Xiangrui; Li, Qiongyao; Zhou, Shengsen

Abstract

In an interior permanent magnet synchronous motor (IPMSM) with segmented skewed poles, the armature reaction magnetic field (AR-MF) changes nonlinearly due to the saturation of the rotor magnetic barrier. Meanwhile, this varies under different excitation currents. As a result, it is difficult to be calculated by means of analytical methods. In this paper, the calculation model of AR-MF of IPMSM is first established by vector superposition method, without considering the saturation effect of rotor and the slotting effect of stator. In the second step, the virtual magnetic field of the rotor is introduced to quantitatively calculate the influence of local inhomogeneous saturation on the AR-MF. The latter is derived by combining both the subdomain method and equivalent magnetic circuit method. The complex relative permeance is also introduced to establish the AR-MF accounting for the stator slotting effect. To validate the AR-MF calculation method proposed, an 8-pole 48-slot IPMSM with segmented skewed poles is considered as a case study, showing a comparison by both with finite element (FE) results and the electromagnetic torque measured on a test bench. The model proposed in this paper shows high accuracy and fast computation with respect to FE analysis.

Citation

An, Y., Ma, C., Zhang, N., Guo, Y., Degano, M., Gerada, C., Bu, F., Yin, X., Li, Q., & Zhou, S. (2022). Calculation Model of Armature Reaction Magnetic Field of Interior Permanent Magnet Synchronous Motor With Segmented Skewed Poles. IEEE Transactions on Energy Conversion, 37(2), 1115-1123. https://doi.org/10.1109/tec.2021.3123359

• Journal Article Type: Article
• Acceptance Date: Oct 24, 2021
• Online Publication Date: Oct 27, 2021
• Publication Date: 2022-06
• Deposit Date: Nov 28, 2024
• Journal: IEEE Transactions on Energy Conversion
• Print ISSN: 0885-8969
• Electronic ISSN: 1558-0059
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 37
• Issue: 2
• Pages: 1115-1123
• DOI: https://doi.org/10.1109/tec.2021.3123359
• Keywords: Electrical and Electronic Engineering; Energy Engineering and Power Technology
• Public URL: https://nottingham-repository.worktribe.com/output/8226742
• Publisher URL: https://ieeexplore.ieee.org/document/9591309