Title: An investigation of maximum EMI path inside the hybrid electric vehicle

Authors: Zongyu An; Quandi Wang; Yali Zheng

Addresses: State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, University A Campus, No. 174, Room 423, Shazhengjie Street, Shapingba District, Chongqing, 400044, China ' State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, University A Campus, No. 174, Room 423, Shazhengjie Street, Shapingba District, Chongqing, 400044, China ' State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, University A Campus, No. 174, Room 423, Shazhengjie Street, Shapingba District, Chongqing, 400044, China

Abstract: Impelled by the pressure of environment protection and energy crisis, new energy automobiles, especially the hybrid electric vehicle (HEV), have been rapidly developed. However, inside the HEV, the high-power devices, such as DC power convertor and motor drive controller, include switch components. The turn-on and turn-off behaviours of these switch components will bring about peak voltage and oscillating current signals, causing serious electromagnetic interference (EMI) in a wide frequency range. Therefore, this paper studies the conducted EMI in these two systems of HEV, measures the spectrum of conducted noise current on the main cables, respectively, under starting speed and idle speed. And the comparison of noise features between different cables shows that the large current on DC-AC power lines is largest noise source when motor starts, and the peak signals produced by the switch behaviours of MOSFET is the most serious noise source under the idle speed.

Keywords: HEVs; hybrid electric vehicles; converters; drive motors; electromagnetic compatibility; EMI; electromagnetic interference; transmission path; feature extraction; noise current; starting speed; idle speed; DC-AC power lines; peak signals; switch behaviour; MOSFET; hybrid vehicles.

DOI: 10.1504/IJEHV.2013.057608

International Journal of Electric and Hybrid Vehicles, 2013 Vol.5 No.3, pp.253 - 259

Received: 04 Jun 2013
Accepted: 22 Jul 2013
Published online: 14 Nov 2013 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article