DC reactor type transformer inrush current limiter
- 1 September 2007
- journal article
- Published by Institution of Engineering and Technology (IET) in IET Electric Power Applications
- Vol. 1 (5) , 808-814
- https://doi.org/10.1049/iet-epa:20060511
Abstract
A new inrush current limiter (ICL) is presented to limit the inrush current of transformers. The proposed ICL consists of three similar sets. Each set includes a diode-bridge and a single DC reactor and is connected in series with the individual phases of transformer. The ICL has almost no effect on normal operation of transformer. It needs no control, measurement and gate driving system and has a simple power circuit topology. The equivalent instantaneous inductance of transformer is used for analysis of circuit operation. The theoretical analysis, design features, power losses and voltage distortion because of using ICL are presented. The proposed method has been tested by simulation and laboratory experiments. Both results show that the proposed ICL successfully limits the inrush current.Keywords
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