Hybrid EMI filter design for common mode EMI suppression in a motor drive system

Author

Wang, Shuo ; Maillet, Yoann Yorrick ; Wang, Fred ; Boroyevich, Dushan

Author_Institution

Center for Power Electron. Syst., Virginia Polytech. Inst. & State Univ., Blacksburg, VA

fYear

2008

fDate

15-19 June 2008

Firstpage

181

Lastpage

187

Abstract

This paper first analyzes the common mode (CM) noise in a motor drive system. Based on the CM noise model, both CM noise voltage cancellation and CM noise current cancellation, which includes feedback and feed-forward current cancellations, are investigated. The feed-forward current cancellation is implemented and tested. It is found that due to the speed and gain bandwidth limitations, the active filter cannot suppress high di/dt and high amplitude CM noise current. Hybrid EMI filters which include a passive filter and an active filter is proposed and designed. The experiments show that the CM inductance of the passive filter can be reduced by 10 times because the active filter can well suppress low frequency noise.

Keywords

active filters; electromagnetic interference; feedforward; interference suppression; motor drives; passive filters; power filters; active filters; common mode EMI suppression; feedforward current cancellations; hybrid EMI filter design; low frequency noise suppression; motor drive system; noise voltage cancellation; passive filters; speed-gain bandwidth limitations; Active filters; Electromagnetic interference; Feedback; Feedforward systems; Low-frequency noise; Motor drives; Noise cancellation; Passive filters; Testing; Voltage; Active EMI filter; common mode (CM) noise; current-controlled current source; hybrid EMI filter; motor drive;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2008. PESC 2008. IEEE

Conference_Location

Rhodes

ISSN

0275-9306

Print_ISBN

978-1-4244-1667-7

Electronic_ISBN

0275-9306

Type

conf

DOI

10.1109/PESC.2008.4591922

Filename

4591922