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This paper analyzes conducted EMI generated by a PWM inverter-fed induction motor drive system. It is shown experimentally and analytically that resonant phenomena in a high-frequency range beyond a dominant resonant frequency are originated from the behavior of power cables as a distributed-constant circuit. Spectra of common-mode and differential-mode currents are simulated by means of introducing a distributed-constant model of the power cables, which consists of a 20-step ladder circuit. As a result, it is also shown that these resonances can be damped out by a single common-mode transformer (CMT) and three differential-mode filters (DMFs), both of which have been proposed by the authors
DC-AC power convertors
bipolar transistor switches
induction motor drives
insulated gate bipolar transistors
power bipolar transistors
power semiconductor switches
Digital Object Identifier: 10.1109/PESC.2000.879938
Published with permission from the copyright holder. This is the institute's copy, as published in Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual, 18-23 June 2000, Volume 2, Pages 928-933.
Copyright © 2000 IEEE. All rights reserved.
Power Electronics Specialists Conference