Title: Development of an automotive 42 V flywheel centrifugal permanent magnet generator and research on regulator control technology

Authors: Xueyi Zhang; Hongbin Yin; Qinjun Du; Liwei Shi

Addresses: School of Transport and Vehicle Engineering, Shandong University of Technology, 12 Zhangzhou Road, Shandong Zibo 255049, China ' Shan Dong Tang Jun Ou Ling Vehicle Manufacturing Co, Ltd, Shangdong Zibo 255100, China ' School of Electronic and Electrical Engineering, Shandong University of Technology, 12 Zhangzhou Road, Shandong Zibo 255049, China ' School of Transport and Vehicle Engineering, Shandong University of Technology, 12 Zhangzhou Road, Shandong Zibo 255049, China

Abstract: Permanent magnet N and S poles of centrifugal flywheel permanent magnet generator are alternately fixed on the inner wall of the flywheel rotor, which makes the magnetic field directly face the air gap and reduces the magnetic flux leakage. Winding short moment coefficient, optimum value of stator outer diameter, permanent magnet size and winding turns are calculated. Parameters of the air-gap flux density, armature reaction magnetic field, the armature winding inductance and no-load induced electromotive force are obtained by simulation analysis by using the analytical method to obtain the optimal design parameters. A pulse width modulation regulator that is integrated into the power supply circuit, the reference circuit, the detection circuit, the oscillation circuit and the trigger circuit is developed, which makes the generator output voltage steady within a certain range. It solves the problem that the automotive flywheel centrifugal permanent magnet generator output voltage is unstable in a wide speed and load.

Keywords: electric vehicles; flywheel centrifugal permanent magnet generator; parameter calculation; simulation; pulse width modulation; PWM regulator; regulator control technology; flywheel rotor; magnetic flux leakage; winding short moment coefficient; stator outer diameter; permanent magnet size; winding turns; air-gap flux density; armature reaction magnetic field; armature winding inductance; electromotive force; automotive electrical equipment; power consumption.

DOI: 10.1504/IJEHV.2013.059363

International Journal of Electric and Hybrid Vehicles, 2013 Vol.5 No.4, pp.270 - 285

Received: 03 May 2013
Accepted: 03 Jul 2013

Published online: 18 Feb 2014 *

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