Title :
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
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;
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
DOI :
10.1109/IPEMC.2009.5157522
