A systematic study of EMI reduction by physical converter layout and suppressive circuits

Author

Sinclair, A.J. ; Ferreira, J.A. ; van Wyk, J.D.

Author_Institution

Energy Lab., Rand Afrikaans Univ., Johannesburg, South Africa

fYear

1993

fDate

15-19 Nov 1993

Firstpage

1059

Abstract

A full-bridge PWM power converter was investigated for conducted EMI, minor modifications to the mechanical and electrical construction were made and their effects on conducted EMI were measured. This includes snubber circuits, different self-capacitances of inductors, grounding of heat sinks and circuit parasitic inductances. The authors describe how the appropriate use of snubbers and due attention to parasitic elements can improve the conducted EMI of a power converter, obviating the need for costly and bulky EMI filters

Keywords

bridge circuits; circuit layout; earthing; electromagnetic interference; heat sinks; overvoltage protection; power convertors; power inductors; pulse width modulation; circuit parasitic inductances; conducted EMI; full-bridge PWM power converter; grounding; heat sinks; inductors; physical layout; self-capacitances; snubber circuits; suppressive circuits; Circuits; Electric variables measurement; Electromagnetic interference; Grounding; Inductors; Mechanical variables measurement; Power measurement; Pulse width modulation; Pulse width modulation converters; Snubbers;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, Control, and Instrumentation, 1993. Proceedings of the IECON '93., International Conference on

Conference_Location

Maui, HI

Print_ISBN

0-7803-0891-3

Type

conf

DOI

10.1109/IECON.1993.339128

Filename

339128