Title :
A systematic approach to analyze EMI in control circuit of power electronic equipment
Author :
Liu, D.H. ; Jiang, J.G. ; Zhao, Z.M.
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
Due to the low level signal voltage of a control circuit, mis-operation or failure caused by its own EMI often occurs in power electronic equipment. In this paper, a systematic approach on EMI propagation characteristics is proposed. The nonlinear characteristic of the propagation is considered and the complicated parameter extraction is avoided. As an example, electromagnetic disturbances in the control circuit of a 6 kW chopper charger equipment are detected and analyzed. Experiments demonstrate the validity of this approach. As a result, mis-operation of the control circuit caused by EMI is diagnosed
Keywords :
battery chargers; choppers (circuits); electromagnetic interference; power electronics; 6 kW; EMI; EMI propagation; chopper charger equipment; control circuit; electromagnetic disturbances; failure; low level signal voltage; mis-operation; nonlinear characteristic; parameter extraction; power electronic equipment; Choppers; Circuits; Control system analysis; Control systems; Electromagnetic interference; Electromagnetic propagation; Low voltage; Parameter extraction; Power electronics; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2001. APEC 2001. Sixteenth Annual IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-6618-2
DOI :
10.1109/APEC.2001.911649
