Title: Magnetic flux analysis and performance test of permanent magnet and claw-pole electromagnetic hybrid excitation generator for electric vehicle range extender

Authors: Xueyi Zhang; Qinjun Du; Shilun Ma; Wenjing Hu; Huihui Geng

Addresses: School of Transportation and Vehicle Engineering, Shandong University of Technology, Zhangzhou Road, Zhangdian District, Zibo, Shandong Province, 255049, China ' School of Electrical and Electronic Engineering, Shandong University of Technology, Zhangzhou Road, Zhangdian District, Zibo, Shandong Province, 255049, China ' School of Transportation and Vehicle Engineering, Shandong University of Technology, Zhangzhou Road, Zhangdian District, Zibo, Shandong Province, 255049, China ' School of Transportation and Vehicle Engineering, Shandong University of Technology, Zhangzhou Road, Zhangdian District, Zibo, Shandong Province, 255049, China ' School of Transportation and Vehicle Engineering, Shandong University of Technology, Zhangzhou Road, Zhangdian District, Zibo, Shandong Province, 255049, China

Abstract: Developed hybrid excitation generator (HEG) has a tangential permanent magnet (PM) and claw-pole electromagnetic parallel combined rotor and a fractional-slot winding stator, which makes stator core eddy-loss and armature winding copper-loss less. By establishing the equivalent magnetic circuit model of each part of HEG and analysing permeance influence factors, magnetic isolation measures are taken to reduce flux leakage and improve output efficiency. The designed electromagnetic coupling regulator controller can ensure stable voltage export of HEG in a wide range of speeds and load states by changing quantity and direction of excitation current to adjust the size of air gap magnetic flux density. Performance test is done and results show that the output voltage is relatively stable. So the HEG can provide electric energy to battery and electrical equipment of vehicles.

Keywords: tangential permanent magnet; claw-pole electromagnetic; parallel magnetic circuit; hybrid excitation generator; electric vehicles; range extender; electromagnetic coupling regulator controller; magnetic flux analysis; magnetic field simulation.

DOI: 10.1504/IJEHV.2017.087578

International Journal of Electric and Hybrid Vehicles, 2017 Vol.9 No.3, pp.187 - 205

Available online: 18 Oct 2017

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