Title :
Voltage-balancing method for IGBTs connected in series
Author :
Sasagawa, Kiyoaki ; Abe, Yasushi ; Matsuse, Kouki
Author_Institution :
Electron. Technol. Lab., Fuji Electr. Adv. Technol. Co. Ltd., Tokyo, Japan
Abstract :
This paper presents a new method for balancing voltages of series-connected insulated gate bipolar transistors (IGBTs). This method can be implemented 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. This principal strategy and experimental results with series-connected IGBTs are first described. After that, further experimental results are shown from the switching tests of 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 transients; voltage control; 2.5 kV; IGBT; collector-emitter voltages; gate drive system; insulated gate bipolar transistors; simple circuit architecture; switching transients; voltage-balancing method; Circuit testing; Delay effects; Industry Applications Society; Insulated gate bipolar transistors; Magnetic cores; Snubbers; Switching circuits; Thyristors; Timing; Voltage control; Device simulation; IGBT; experiment result; insulated gate bipolar transistor; series connection; voltage balance;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2004.830794
