Common mode EMC input filter design for a three-phase buck-type PWM rectifier system

T. Nussbaumer, M. L. Heldwein, J. W. Kolar

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

33 Scopus citations

Abstract

The EMC input filter design for a three-phase PWM rectifier is usually separated into the design of the differential (DM) and of the common mode (CM) stage. While for the DM filter part design rules and procedures are well-known and the parameters are easier to derive, the CM filter design is often based on trial-and-error methods and/or on the experience of the designer. In this work, a comprehensive design procedure for a CM EMC input filter is performed exemplarily for a three-phase three-switch buck-type PWM rectifier with an integrated boost output stage. A simplified model of the CM noise propagation is developed and the relevant parasitic impedances are identified. A capacitive connection from the star-point of the DM input filter to the capacitive centre point of the rectifier output voltage is proposed and the effect of this measure concerning CM EMC is verified. Finally, a two stage CM filter is designed and the compliance to the conducted emission requirements of CISPR 22 Class A is verified through measurements on a 5 kW prototype.

Original languageEnglish
Title of host publicationTwenty-First Annual IEEE Applied Power Electronics Conference and Exposition, APEC '06
Pages1617-1623
Number of pages7
StatePublished - 2006
Externally publishedYes
Event21st Annual IEEE Applied Power Electronics Conference and Exposition, APEC '06 - Dallas, TX, United States
Duration: 19 Mar 200623 Mar 2006

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume2006

Conference

Conference21st Annual IEEE Applied Power Electronics Conference and Exposition, APEC '06
Country/TerritoryUnited States
CityDallas, TX
Period19/03/0623/03/06

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