Transactions of China Electrotechnical Society  2022, Vol. 37 Issue (7): 1654-1665    DOI: 10.19595/j.cnki.1000-6753.tces.201182
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Maximum Ratio of Torque to Copper Loss Control of Hybrid Excited Flux Switching Motor Based on Combination Algorithm
Li Shuai1, Ding Wen2, Li Ke2
1. State Grid Shanxi Electric Power Research Institute Taiyuan 030001 China;
2. School of Electrical Engineering Xi’an Jiaotong University Xi’an 710049 China

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Abstract  Hybrid excited flux switching machines (HEFSMs) have the advantages of permanent magnet flux switching motor and hybrid excitation synchronous motor. The air gap magnetic field can be adjusted by adjusting the excitation current. This kind of motor has a wide application prospect in industry, especially in the field of electric vehicles. In this paper, an optimized maximum ratio of torque to copper loss control strategy for HEFSM in full speed range is proposed. In the low speed constant torque region, the optimized excitation current is used to improve the load capacity and minimize the copper loss. It has a faster response speed than the random combination strategy of excitation current and armature current and the control strategy of zero excitation current. In the constant power range, the objective function of copper loss is established, and the constraints are torque, current, voltage and speed. The optimized negative excitation current and d-axis current can not only obtain higher speed and reluctance torque, but also achieve the maximum ratio of torque to copper loss under a certain torque value, which can expand the speed range and improve the efficiency. Finally, a motor system experimental platform based on dSPACE1103 is built, and the feasibility and effectiveness of the proposed control strategy are verified by experiments.
Key wordsHybrid excited flux-switching machine      copper loss      excitation current      maximum ratio of torque to copper loss      optimization     
Received: 12 September 2020     
PACS: TM351  
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Li Shuai,Ding Wen,Li Ke. Maximum Ratio of Torque to Copper Loss Control of Hybrid Excited Flux Switching Motor Based on Combination Algorithm[J]. Transactions of China Electrotechnical Society, 2022, 37(7): 1654-1665.
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