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Zero-Voltage-Transition Interleaved Boost Converter With an Auxiliary Coupled Inductor

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This paper proposes a soft-switched interleaved boost converter with minimal conduction loss increment and removed reverse-recovery problem. The soft-switching operation is enabled by a soft-switching cell composed of passive components… Click to show full abstract

This paper proposes a soft-switched interleaved boost converter with minimal conduction loss increment and removed reverse-recovery problem. The soft-switching operation is enabled by a soft-switching cell composed of passive components in which an auxiliary coupled inductor and a dc-link capacitor are connected between the switch legs of the interleaved boost modules and output stage. Every MOSFET switch of the proposed boost converter operates with zero-voltage switching turn-on using the coupled inductor current. Consequently, the switching loss of the proposed interleaved boost converter is greatly reduced. In addition, the reduced circulating current in the auxiliary circuit minimizes the increment of the conduction loss. The proposed soft-switched interleaved boost converter operation is verified with 500-W experimental results.

Keywords: boost converter; auxiliary coupled; interleaved boost; coupled inductor

Journal Title: IEEE Transactions on Power Electronics
Year Published: 2017

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