Improvement of electromagnetic compatibility of motor drives using chaotic PWM

Zheng Wang; K. T. Chau; Chunhua Liu

doi:10.1109/TMAG.2007.893712

Author(s)

Zheng Wang
K. T. Chau
Chunhua Liu

Detail(s)

Original language	English
Pages (from-to)	2612-2614
Journal / Publication	IEEE Transactions on Magnetics
Volume	43
Issue number	6
Publication status	Published - Jun 2007
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1109/TMAG.2007.893712 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-34249029608&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(0bfd468e-b776-46f1-b12e-0331afb07cee).html

Abstract

In this paper, a new chaotic pulse width modulation (PWM) scheme is proposed and implemented to reduce the conducted electro-magnetic interference (EMI) in motor drives. The key is the use of logistic mapping to chaoize a frequency-modulated signal which then modulates the carrier frequency. Compared with the sinusoidal PWM and random PWM, the proposed scheme not only suppresses the peaky EMI, but also avoids the occurrence of low-order noises and mechanical resonance. Both simulation and experimental results are given to support the validity. © 2007 IEEE.