Reduction of common-mode currents in PWM inverter motor drives

Author

Cacciato, Mario ; Consoli, Alfio ; Scarcella, Giuseppe ; Testa, Antonio

Author_Institution

Dept. of Electr. Electron. & Syst. Eng., Catania Univ., Italy

Volume

35

Issue

2

fYear

1999

Firstpage

469

Lastpage

476

Abstract

Modern pulsewidth modulation (PWM) inverter motor drives are affected by dangerous common-mode currents due to the high rate of variation of the modulated voltage. An inexpensive alternative to low-pass filters, which are normally used to limit common-mode currents, consists in reducing such currents by using suitable modulation strategies. In this paper, a new approach for designing PWM strategies is presented, which is able to reduce common-mode currents by limiting the amount of variations of the common-mode voltage. The main characteristics of the proposed approach are experimentally evaluated on a standard PWM induction motor drive

Keywords

DC-AC power convertors; PWM invertors; induction motor drives; machine testing; machine theory; PWM inverter motor drives; PWM strategies design; common-mode currents reduction; common-mode voltage variations; induction motor drive; modulated voltage variation; modulation strategies; Costs; Electromagnetic compatibility; Filters; Fluctuations; Motor drives; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Switching frequency; Voltage;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.753643

Filename

753643