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In this work, a unidirectional series-resonant dc/dc converter with a semi-dual-bridge structure is evaluated comprehensively. This converter can realize buck–boost conversion by means of the simple secondary phase-shifted control. With the variations of load level and converter gain, the converter may enter into different operation modes. Features of all possible operation modes and the boundary...
In this paper, three different phase-shift control schemes for a bidirectional series resonant converter are selected for comparative investigation. Based on the fundamental harmonics approximation approach, steady state solutions are obtained for single-phase-shift control, dual-phase-shift control and modified dual-phase-shift control respectively. An extended study is then performed in terms of...
A semi-dual-bridge resonant converter derived from the popular dual-bridge resonant converter (DBRC) topology is proposed in this paper for applications requiring only unidirectional power flow such as various types of DC power supplies, battery chargers in electric vehicles and dc-dc stage of different types of photovoltaic inverters. Based on the similarity of topology to the DBRC converter, the...
Originated from the dual-bridge resonant converter, a semi-dual-bridge resonant converter is proposed for unidirectional applications in this paper. The single phase-shift modulation is adopted for power regulation. It is proved that the proposed converter is capable to work in either continuous-current mode or discontinuous-current mode. Compared with the dual-bridge resonant converter with single...
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