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Electronics 2018, 7(9), 184;

Performance Evaluation of a Semi-Dual-Active-Bridge with PPWM Plus SPS Control

Faculty of Information Technology, Macau University of Science and Technology, Taipa, Macau 999078, China
Author to whom correspondence should be addressed.
Received: 24 August 2018 / Revised: 5 September 2018 / Accepted: 7 September 2018 / Published: 9 September 2018
(This article belongs to the Special Issue Applications of Power Electronics)
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In this paper, a semi-dual-active-bridge (S-DAB) DC/DC converter with primary pulse-width modulation plus secondary phase-shifted (PPWM + SPS) control for boost conversion is analyzed in detail. Under the new control scheme, all effective operation modes are identified at first. Then, the working principle, switching behaviour, and operation range in each mode are discussed. Compared with conventional secondary phase-shifted control, PPWM + SPS control with two controllable phase-shift angles can extend the zero-voltage switching (ZVS) range and enhance control flexibility. In addition, an effective control route is also given that can make the converter achieve at the global minimum root-mean-square (RMS) current across the whole power range and avoid the voltage ringing on the transformer secondary-side at a light load. Finally, a 200 W prototype circuit is built and tested to verify correctness and effectiveness of theoretical results. View Full-Text
Keywords: DC–DC conversion; zero-voltage switching (ZVS) DC–DC conversion; zero-voltage switching (ZVS)

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Lu, M.; Li, X. Performance Evaluation of a Semi-Dual-Active-Bridge with PPWM Plus SPS Control. Electronics 2018, 7, 184.

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