Research on current sharing of paralleled IGBTs in different DC breaker circuit topologies
School of electrical engineering, Xi’an Jiaotong University, 710049 Xi’an, China
a Corresponding author: email@example.com
IGBT modules used in series and parallel to satisfy the requirement in high-power DC circuit breakers are often prone to large-current destruction due to current unbalance between paralleled IGBTs. It is of great importance to identify the current unbalance causes and to find a method optimizing the current sharing of paralleled IGBTs. In this paper the current-sharing influencing factors are discussed and verified by simulation. Two possible circuit topologies used in DC circuit breakers are proposed and simulated to see their performance in current sharing. The results show that one of them can provide us with a simple and effective method to achieve good current balancing in the DC circuit breaker application.
© Owned by the authors, published by EDP Sciences, 2016
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