Analysis of EMI filter attenuation characteristics for a multi-converter system

Author

Tamate, Michio ; Toba, Akio ; Wada, Keiji ; Shimizu, Toshihisa

Author_Institution

Electron. Technol. Lab., Fuji Electr. Adv. Technol. Co., Ltd., Hino, Japan

fYear

2009

fDate

17-20 May 2009

Firstpage

957

Lastpage

962

Abstract

A method is proposed for analysis of the attenuation characteristics of electromagnetic interference (EMI) filters for multiple power converters connected to same power line. The analysis results indicate that increase of the conducted EMI noise may occur, because the cut-off frequencies of the EMI-filter are varied according to the number of power converters. A mathematical solution for the cut-off frequencies is derived by simplification of the circuit configuration based on Thevenin´s theorem. Finally, an effective design method of EMI filters is proposed to avoid such problem of a multi-converter system.

Keywords

electromagnetic interference; power convertors; EMI filter attenuation; Thevenin´s theorem; cut-off frequencies; electromagnetic interference; multi-converter system; multiple power converters; Attenuation; Capacitors; Circuit noise; Design methodology; Electromagnetic analysis; Electromagnetic interference; Equivalent circuits; Filters; Inverters; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference, 2009. IPEMC '09. IEEE 6th International

Conference_Location

Wuhan

Print_ISBN

978-1-4244-3556-2

Electronic_ISBN

978-1-4244-3557-9

Type

conf

DOI

10.1109/IPEMC.2009.5157522

Filename

5157522