Title :
Voltage balancing method for IGBTs connected in series
Author :
Sasagawa, Kiyoaki ; Abe, Yasushi ; Matsuse, Kouki
Author_Institution :
Power Electron. Lab., Fuji Electr. Corp. R&D Ltd., Tokyo, Japan
Abstract :
This paper presents a new method to balance the voltages of the series connected IGBTs. This method can be realized only by adding simple circuits to the gate drive system of the IGBTs, and its effect of balancing the IGBT´s collector-Emitter voltages during the switching transients is remarkable. Principal of this strategy and experimental results with series connected two IGBTs are described firstly. After that, further experimental results are set forth, which are switching tests with four 2.5 kV flat-packaged IGBTs connected in series. Through the switching tests, superior characteristics of the proposed method have been confirmed.
Keywords :
insulated gate bipolar transistors; switching; 2.5 kV; IGBT collector-emitter voltages; flat-packaged IGBT; gate drive system; series connected IGBT; switching tests; switching transients; voltage balancing method; Delay effects; Insulated gate bipolar transistors; Magnetic cores; Snubbers; Surges; Switching circuits; Thyristors; Timing; Voltage; Wires;
Conference_Titel :
Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the
Conference_Location :
Pittsburgh, PA, USA
Print_ISBN :
0-7803-7420-7
DOI :
10.1109/IAS.2002.1042813
