A New Control Method for a Bi-Directional Phase-Shift-Controlled DC-DC Converter with an Extended Load Range
AbstractPhase-shifted converters are practically important to provide high conversion efficiencies through soft-switching techniques. However, the limitation on a resonant inductor current in the converters often leads to a non-fulfillment of the requirement of minimum load current. This paper presents a new power electronics control technique to enable the dual features of bi-directional power flow and an extended load range for soft-switching in phase-shift-controlled DC-DC converters. The proposed technique utilizes two identical full bridge converters and inverters in conjunction with a new control logic for gate-driving signals to facilitate both Zero Current Switching (ZCS) and Zero Voltage Switching (ZVS) in a single phase-shift-controlled DC-DC converter. The additional ZCS is designed for light load conditions at which the minimum load current cannot be attained. The bi-directional phase-shift-controlled DC-DC converter can implement the function of synchronous rectification. Its fast dynamic response allows for quick energy recovery during the regenerative braking of traction systems in electrified trains. View Full-Text
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Xu, W.; Chan, N.H.L.; Or, S.W.; Ho, S.L.; Chan, K.W. A New Control Method for a Bi-Directional Phase-Shift-Controlled DC-DC Converter with an Extended Load Range. Energies 2017, 10, 1532.
Xu W, Chan NHL, Or SW, Ho SL, Chan KW. A New Control Method for a Bi-Directional Phase-Shift-Controlled DC-DC Converter with an Extended Load Range. Energies. 2017; 10(10):1532.Chicago/Turabian Style
Xu, Wenzheng; Chan, Nelson H.L.; Or, Siu W.; Ho, Siu L.; Chan, Ka W. 2017. "A New Control Method for a Bi-Directional Phase-Shift-Controlled DC-DC Converter with an Extended Load Range." Energies 10, no. 10: 1532.
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