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Study on PMSMs with wide Flux-weakening Speed Range for New Energy Electric Vehicles

並列摘要


This paper analyzes the permanent magnet synchronous motor used for electric vehicle, and the influence of the builtin "V" type size parameters on direct axis inductance, quadrature axis inductance as well as PM flux linkage. The research is about the change rule of permanent magnet torque and reluctance torque. In the view of the optimal driving system, it summarizes the design method for rotor magnetic circuit structure of PMSM used for electric vehicle, and analyzes the influence on Flux Weakening ability of the main electromagnetic parameters. It also includes the design of two sets of prototype of 25 kW with different rotor structure. Experimental results of the speed regulation characteristic curve and efficiency MAP verify the feasibility of the design rules proposed in this paper.

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