Title :
A new method for fast short circuit protection of IGBTs
Author :
Lizama, Ignacio ; Alvarez, Rodrigo ; Bernet, Steffen ; Wagner, Martin
Author_Institution :
Power Electron. Lab., Teschnische Univ. Dresden, Dresden, Germany
Abstract :
This paper presents a new, simple and low cost method for fast short circuit protection of IGBT modules. The principle of the method is to measure the voltage across the inductance between the power-emitter and the auxiliary-emitter. Moreover, by modulating the gate-signal, the new method reduces the gate emitter voltage VGE in order to limit the short circuit current and allows the semiconductor to be operated in the safe operation area. The new concept has been implemented in a gate unit, which is controlled by an FPGA. The performance of the gate unit has been verified in a buck converter with an IGBT module FF1400R12IP4 of 1400 A/1200 V.
Keywords :
field programmable gate arrays; insulated gate bipolar transistors; power convertors; FF1400R12IP4 module; FPGA; IGBT modules; auxiliary-emitter; buck converter; current 1400 A; fast short circuit protection; gate unit; gate-signal; low cost method; power-emitter; voltage 1200 V; Current measurement; Insulated gate bipolar transistors; Junctions; Logic gates; Standards; Voltage control; Voltage measurement;
Conference_Titel :
Industrial Electronics Society, IECON 2014 - 40th Annual Conference of the IEEE
DOI :
10.1109/IECON.2014.7048635
