Title :
Static balancing of the collector current of IGBTs connected in parallel
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 method for balancing currents of two or more parallel-connected IGBTs during an on-state of the switches, wherein each semiconductor is controlled by its own gate unit. Moreover, the imbalance of the collector currents are estimated by measuring the voltage across the inductance between the power-emitter and the auxiliary-emitter of the semiconductor. The imbalance control algorithm has been implemented in an FPGA. Experimental results have been obtained, with the use of a buck converter with two IGBTs of 650 A/1700 V connected in parallel.
Keywords :
bipolar transistor switches; field programmable gate arrays; inductance; insulated gate bipolar transistors; power convertors; voltage control; FPGA; auxiliary-emitter semiconductor; buck converter; collector current; current 650 A; gate unit; imbalance control algorithm; inductance; on-state switches; parallel-connected IGBT; power-emitter semiconductor; static balancing; voltage 1700 V; voltage measurement control; Estimation; Field programmable gate arrays; Insulated gate bipolar transistors; Logic gates; Transient analysis; Voltage control; Voltage measurement;
Conference_Titel :
Industrial Electronics Society, IECON 2014 - 40th Annual Conference of the IEEE
DOI :
10.1109/IECON.2014.7048750
