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Family of Nonisolated Fully Soft Switched Bidirectional Converters With Single Switch Auxiliary Circuit | IEEE Journals & Magazine | IEEE Xplore

Family of Nonisolated Fully Soft Switched Bidirectional Converters With Single Switch Auxiliary Circuit


Abstract:

In this article, a family of nonisolated zero voltage switching (ZVS) bidirectional dc–dc converters (BDCs) with simple auxiliary circuit and continuous current at low vo...Show More

Abstract:

In this article, a family of nonisolated zero voltage switching (ZVS) bidirectional dc–dc converters (BDCs) with simple auxiliary circuit and continuous current at low voltage side source (V_L) is proposed. The auxiliary circuit is only composed of a single switch, a capacitor, and a small inductor which is applied to all proposed nonisolated BDCs to provide soft switching condition for all semiconductor elements. Thus, in terms of components count, the presented converters are superior to other counterpart BDCs. In addition, the continuous current at V_L is maintained, while the main and auxiliary switches in both operating modes are turned on and off at ZVS. Moreover, all diodes turn off at zero current switching which mitigate the reverse recovery problem. Hence, a suitable overall efficiency is achieved in all proposed BDCs. The proposed bidirectional buck/boost converter is analyzed for both step-up and step-down operating modes in details and a 100 W converter prototype is implemented to verify the main converter features and the theoretical analysis.
Published in: IEEE Transactions on Industrial Electronics ( Volume: 69, Issue: 12, December 2022)
Page(s): 12720 - 12727
Date of Publication: 21 December 2021

ISSN Information:


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