Title :
Analysis and reduction methods of EMI radiational noise from converter system
Author :
Igarashi, Seiki ; Takizawa, Satoki ; Kuroki, Kazuo ; Shimizu, Toshihisa
Author_Institution :
Fuji Electr. Corp. Res. & Dev. Ltd., Tokyo, Japan
Abstract :
This paper describes a mechanism and reduction methods of EMI radiational noise on IGBTs. The radiational. Noise is generated by oscillating current flowing through the IGBTs output capacity and the snubber circuit. The oscillating current is forced to flow by the high dv/dt rates of the IGBT switching operation. The radiational noise can be analyzed by frequency evolution of the oscillating current. In addition, it is indicated that using a di/dt control gate drive circuit is effective as a means for reducing the radiational noise. The effect of this method has been verified by experimental and simulational results
Keywords :
driver circuits; electromagnetic interference; insulated gate bipolar transistors; power convertors; semiconductor device noise; EMI radiational noise; IGBT; IGBT output capacity; converter system; di/dt control gate drive circuit; frequency evolution; noise generation; oscillating current; oscillating current flow; reduction methods; snubber circuit; Circuit noise; Circuit testing; Coils; Electromagnetic interference; Frequency; Insulated gate bipolar transistors; Noise generators; Noise reduction; Switching circuits; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE
Conference_Location :
Fukuoka
Print_ISBN :
0-7803-4489-8
DOI :
10.1109/PESC.1998.703150
