Design and Optimization of Permanent Magnet Brushless Machines for Electric Vehicle Applications

Weiwei Gu, Xiaoyong Zhu, Li Quan and Yi Du
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Weiwei Gu: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Xiaoyong Zhu: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Li Quan: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Yi Du: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China

Energies, 2015, vol. 8, issue 12, 1-13

Abstract: In this paper, by considering and establishing the relationship between the maximum operating speed and d -axis inductance, a new design and optimization method is proposed. Thus, a more extended constant power speed range, as well as reduced losses and increased efficiency, especially in the high-speed region, can be obtained, which is essential for electric vehicles (EVs). In the first step, the initial permanent magnet (PM) brushless machine is designed based on the consideration of the maximum speed and performance specifications in the entire operation region. Then, on the basis of increasing d -axis inductance, and meanwhile maintaining constant permanent magnet flux linkage, the PM brushless machine is optimized. The corresponding performance of the initial and optimal PM brushless machines are analyzed and compared by the finite-element method (FEM). Several tests are carried out in an EV simulation model based on the urban dynamometer driving schedule (UDDS) for evaluation. Both theoretical analysis and simulation results verify the validity of the proposed design and optimization method.

Keywords: design optimization; electric vehicle (EV); permanent magnet brushless machine (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (14)

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