Miniaturization and Current Detection of Coupled-Inductor Circuit for Reducing Cross Currents of Modular Paralleled Power Converters

This paper proposes a coupled-inductor circuit that suppresses cross currents flowing through modular paralleled power converters. The proposed circuit consists of coupled transformers, a current sensor, and amplifiers. The circuit operates as coupling inductors when cross current flows through the...

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Bibliographic Details
Published inIEEJ JOURNAL OF INDUSTRY APPLICATIONS Vol. 143; no. 3
Main Authors Suzuki, Sosuke, Ogasawara, Satoshi, Orikawa, Koji, 宗佑, 鈴木, 悟司, 小笠原, 幸司, 折川
Format Journal Article
LanguageEnglish
Published Tokyo Japan Science and Technology Agency 01.03.2023
Subjects
Circuits
Inductors
Power converters
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Summary:This paper proposes a coupled-inductor circuit that suppresses cross currents flowing through modular paralleled power converters. The proposed circuit consists of coupled transformers, a current sensor, and amplifiers. The circuit operates as coupling inductors when cross current flows through the converters, such that the volume of the inductors can be considerably minimized. In addition, the circuit can be used as a current sensor. The frequency bandwidth of the sensor can be further improved by adding a few components. The experimental results show characteristics of cross current suppression and current detection, and the propriety and effectiveness of the proposed circuit are confirmed.
ISSN:2187-1094
2187-1108
DOI:10.1541/ieejias.143.177