volume | PIER Journals

Abstract

The interior permanent magnet synchronous generators (IPMSGs) for range-extended electric vehicles (REEVs) have a complex magnetic circuit distribution, which makes it difficult to analyze their electromagnetic characteristics. This paper investigates the electromagnetic characteristics of a combined pole IPMSG topology. An accurate equivalent magnetic circuit model of the generator, taking into account the influence of leakage flux, is established. The magnetic flux equations and precise calculation methods for the main magnetic circuits and leakage magnetic circuits are provided. The accuracy of the equivalent magnetic circuit model is verified using the finite element method. Based on the analysis results, the permanent magnet end of the generator is designed with magnetization isolation. The multi-parameter multi-objective optimization is performed using the particle swarm method to improve the output performance of the generator. A prototype is manufactured and tested. The generator exhibits excellent no-load and load performance, fulfilling the practical requirements and laying a solid foundation for further optimization of the REEV's power system and further improvement of system-level performance.

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doi:10.2528/PIERC25011005

Dr. Jiachen An

Dr. Huihui Geng

Dr. Xia Zhang

Mr. Deming Kong

Dr. Xianshun Wang

Dr. Jianbo Zhao

Dr. Zhiang Liang