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Energies 2018, 11(9), 2419;

General Analysis of Switching Modes in a Dual Active Bridge with Triple Phase Shift Modulation

Power Electronics System Group, Universidad Carlos III de Madrid, 28911 Leganes, Spain
Centre of Industrial Electronics, Universidad Politecnica de Madrid, 28001 Madrid, Spain
Author to whom correspondence should be addressed.
Received: 11 August 2018 / Revised: 6 September 2018 / Accepted: 7 September 2018 / Published: 12 September 2018
(This article belongs to the Section Electrical Power and Energy System)
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This paper provides an exhaustive analysis of the Dual-Active-Bridge with Triple-Phase-Shift (DAB-TPS) modulation and other simpler ones, identifying all the possible switching modes to operate the DAB in both power flow directions, and for any input-to-output voltage range and output power. This study shows four cases and seven switching modes for each case when the energy flows in one direction. That means that the DAB operates up to fifty-six different switching modes when the energy flows in both directions. Analytical expressions for the inductor current, the output power, and the boundaries between switching modes are provided for all cases. Additionally, the combination of control variables to achieve Zero-Voltage-Switching (ZVS) or Zero-Current-Switching (ZCS) is provided for each case and switching mode, by showing which switching modes obtain ZVS or ZCS for the whole power range and all switches—independent of the input-to-output voltage ratio. Therefore, the most interesting cases, switching mode and modulation for using the DAB are identified. Additionally, experimental validation has been carried out with a 250 W prototype. This analysis is a proper tool to design the DAB in the optimum switching mode, reducing the RMS current and achieving to increase efficiency and the power density. View Full-Text
Keywords: Dual-Active-Bridge (DAB); soft switching; Triple-Phase-Shift (TPS); Single Phase-Shift; ZCS and ZVS Dual-Active-Bridge (DAB); soft switching; Triple-Phase-Shift (TPS); Single Phase-Shift; ZCS and ZVS

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Calderon, C.; Barrado, A.; Rodriguez, A.; Alou, P.; Lazaro, A.; Fernandez, C.; Zumel, P. General Analysis of Switching Modes in a Dual Active Bridge with Triple Phase Shift Modulation. Energies 2018, 11, 2419.

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