Reactive Power and Soft-Switching Capability Analysis of Dual-Active-Bridge DC-DC Converters with Dual-Phase-Shift Control

Huiqing Wen; Bin Su

Reactive Power and Soft-Switching Capability Analysis of Dual-Active-Bridge DC-DC Converters with Dual-Phase-Shift Control

Huiqing Wen

Bin Su

Vol. 15, No. 1, pp. 18-30, Jan. 2015

10.6113/JPE.2015.15.1.18

Bidirectional DC-DC converter

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Abstract

This paper focuses on a systematical and in-depth analysis of the reactive power and soft-switching regions of Dual Active Bridge(DAB) converters with dual-phase-shift (DPS) control to achieve high efficiency in a wide operating range. The key features of theDPS operating modes are characterized and verified by analytical calculation and experimental tests. The mathematical expressionsof the reactive power are derived and the reductions of the reactive power are illustrated with respect to a wide range of output powerand voltage conversion ratios. The ZVS soft-switching boundary of the DPS is presented and one more leg with ZVS capability isachieved compared with the CPS control. With the selection of the optimal operating mode, the optimal phase-shift pair isdetermined by performance indices, which include the minimum peak or rms inductor current. All of the theoretical analysis andoptimizations are verified by experimental tests. The experimental results with the DPS demonstrate the efficiency improvement fordifferent load conditions and voltage conversion ratios.

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Cite this article

[IEEE Style]

H. Wen and B. Su, "Reactive Power and Soft-Switching Capability Analysis of Dual-Active-Bridge DC-DC Converters with Dual-Phase-Shift Control," Journal of Power Electronics, vol. 15, no. 1, pp. 18-30, 2015. DOI: 10.6113/JPE.2015.15.1.18.

[ACM Style]

Huiqing Wen and Bin Su. 2015. Reactive Power and Soft-Switching Capability Analysis of Dual-Active-Bridge DC-DC Converters with Dual-Phase-Shift Control. Journal of Power Electronics, 15, 1, (2015), 18-30. DOI: 10.6113/JPE.2015.15.1.18.