DocumentCode
3173158
Title
Series connection of IGBTs with active voltage balancing
Author
Chitta, Venkatesh ; Hong, Soonwook ; Torrey, David A.
Author_Institution
Dept. of Electr. Power Eng., Rensselaer Polytech. Inst., Troy, NY, USA
Volume
2
fYear
1997
fDate
5-9 Oct 1997
Firstpage
961
Abstract
This paper describes a gate drive circuit for series-connected IGBTs in high voltage applications. The control criterion of the gate drive circuit is to actively limit the voltages during switching transients, while minimizing the switching transient and losses. In order to achieve the control criterion, a closed loop control scheme is adopted. The closed loop control injects current to an IGBT gate as required to limit the IGBT collector-emitter voltage to a predefined level. The performance of the gate drive circuit is examined experimentally by the series connection of three IGBTs with conventional snubber circuits. The experimental results show the voltage balancing by an active control with wide variations in loads and imbalance conditions
Keywords
bipolar transistor switches; closed loop systems; driver circuits; insulated gate bipolar transistors; power bipolar transistors; power semiconductor switches; power system transients; semiconductor device testing; snubbers; voltage control; IGBT collector-emitter voltage; active voltage balancing; circuit performance; closed loop control scheme; control criterion; gate drive circuit; high voltage applications; series-connected IGBTs; snubber circuits; switching transient voltage limitation; Insulated gate bipolar transistors; Power generation; Pulse width modulation inverters; Snubbers; Static VAr compensators; Steady-state; Surges; Switching circuits; Thyristors; Voltage control;
fLanguage
English
Publisher
ieee
Conference_Titel
Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE
Conference_Location
New Orleans, LA
ISSN
0197-2618
Print_ISBN
0-7803-4067-1
Type
conf
DOI
10.1109/IAS.1997.628977
Filename
628977
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