Title: Design and stabilivolt analysis of Nd-Fe-B permanent magnet generator for electric vehicle range extender

Authors: Xueyi Zhang; Liwei Shi; Yujuan Wang

Addresses: Transportation and Vehicle Engineering School, Shandong University of Technology, 12 Zhangzhou Road, Zibo, Shandong, 255049, China. ' Transportation and Vehicle Engineering School, Shandong University of Technology, 12 Zhangzhou Road, Zibo, Shandong, 255049, China. ' Transportation and Vehicle Engineering School, Shandong University of Technology, 12 Zhangzhou Road, Zibo, Shandong, 255049, China

Abstract: Many pieces of Nd-Fe-B permanent-magnet materials are fixed to the generator rotor iron core through pole-boots and non-magnetic screws, and the adjoining Nd-Fe-B permanent-magnet material|s polarity is opposite, that is N polarity and S polarity are arrayed alternately, which compose the permanent-magnet rotor. When rotor is rotating, magnetic field rotating with it, meanwhile, armature coil cuts magnetic-curve and produces electromotive force. The four-phase half-controlled bridge rectification voltage stabiliser is designed, which is composed of reference circuit, comparator circuit, trigger circuit and rectifying circuit, meanwhile, it can both regulate the voltage and the current and put out direct current with stable voltage. The voltage instability, which is caused by the permanent-magnet generator of electric vehicle range extender at wide speed and wide load, is settled.

Keywords: electric vehicles; extender devices; Nd-Fe-B permanent magnets; permanent magnet generators; four-phase; half-controlled bridge; rectification stabilivolt; armature winding; slot full rate; electromotive force; voltage stabilisation; voltage instability.

DOI: 10.1504/IJEHV.2011.043877

International Journal of Electric and Hybrid Vehicles, 2011 Vol.3 No.3, pp.259 - 271

Published online: 27 Nov 2011 *

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