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

1

fYear

1997

fDate

5-9 Oct 1997

Firstpage

707

Abstract

Modern 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 the present paper a new approach for designing PWM strategies is presented 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; bipolar transistor switches; induction motor drives; insulated gate bipolar transistors; machine testing; machine theory; power bipolar transistors; power semiconductor switches; IGBT devices; PWM inverter; characteristics; common mode currents reduction; common mode voltage variations; induction motor drive; modulated voltage variation; modulation strategies; Capacitance; Costs; Fluctuations; Low pass filters; Motor drives; Pulse width modulation; Pulse width modulation inverters; Stator windings; Switching frequency; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE

Conference_Location

New Orleans, LA

ISSN

0197-2618

Print_ISBN

0-7803-4067-1

Type

conf

DOI

10.1109/IAS.1997.643146

Filename

643146