volume 10, issue 3, P393-401 2021
DOI: 10.1541/ieejjia.19013663
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Yuki Itogawa, Takeshi Amimoto, Yu Kawai, Tatsuya Okuda

Abstract: This paper describes a high-frequency-isolation circuit that uses a three-phase transformer with a zero-phase current. The proposed circuit contains a bidirectional chopper circuit and a three-phase high-frequency isolation circuit. The bidirectional chopper circuit controls the DC bus voltage of the first circuit independent from the input voltage source. Thus, the ratio of the DC bus voltage of the first circuit to that of the second circuit can be controlled, which is important in controlling the high-frequ…

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