Journal
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Volume 69, Issue 1, Pages 365-375Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2021.3051577
Keywords
Switches; Bridge circuits; Topology; Rectifiers; Stress; Capacitors; Inductors; Hybrid bridge; semiactive rectifier; wide voltage gain
Categories
Funding
- National Natural Science Foundation of China [51707010]
- National Key Research and Development Program of China [2018YFB0105400]
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This paper introduces a novel high switching frequency isolated voltage-fed hybrid bridge combined with semiactive rectifier dc-dc converter for unidirectional power flow and wide voltage gain. By elaborating on potential working patterns and implementing a segmented control strategy, the converter can theoretically achieve higher efficiency operation.
A novel high switching frequency isolated voltage-fed hybrid bridge combining semiactive rectifier dc-dc converter is introduced for unidirectional power flow and wide voltage gain. Three potentially appropriate working patterns are elaborated, including ideal output power derivation, current stress analysis, working voltage matching, output power distribution, soft switching characteristics, etc. In consideration of the optimization of the minimum of the root-mean-square value of the leakage inductor current, two truly applicable working patterns are selected. Meanwhile, based on the consideration of soft switching, a segmented control strategy is implemented on it. With the optimization of current stress and the realization of soft switching, the converter can theoretically realize higher efficiency operation. Eventually, the effectiveness of the proposed converter and the control strategy is verified by a 1 kW prototype.
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