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

Carlos Calderon, Andres Barrado, Alba Rodriguez, Pedro Alou, Antonio Lazaro, Cristina Fernandez and Pablo Zumel
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Carlos Calderon: Power Electronics System Group, Universidad Carlos III de Madrid, 28911 Leganes, Spain
Andres Barrado: Power Electronics System Group, Universidad Carlos III de Madrid, 28911 Leganes, Spain
Alba Rodriguez: Power Electronics System Group, Universidad Carlos III de Madrid, 28911 Leganes, Spain
Pedro Alou: Centre of Industrial Electronics, Universidad Politecnica de Madrid, 28001 Madrid, Spain
Antonio Lazaro: Power Electronics System Group, Universidad Carlos III de Madrid, 28911 Leganes, Spain
Cristina Fernandez: Power Electronics System Group, Universidad Carlos III de Madrid, 28911 Leganes, Spain
Pablo Zumel: Power Electronics System Group, Universidad Carlos III de Madrid, 28911 Leganes, Spain

Energies, 2018, vol. 11, issue 9, 1-23

Abstract: 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.

Keywords: Dual-Active-Bridge (DAB); soft switching; Triple-Phase-Shift (TPS); Single Phase-Shift; ZCS and ZVS (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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