OPTIMIZATION CONTROL OF MINIMUM BACKFLOW POWER FOR UAL ACTIVE BRIDGE DC-DC CONVERTER BASED ON DUAL PHASE SHIFT CONTROL

Wang Pan; Zhu Jize; Xu Hu; Zhang Guoguang; Yuan Lei; Xu Anfei

doi:10.19912/j.0254-0096.tynxb.2024-0162

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (5) : 193-202. DOI: 10.19912/j.0254-0096.tynxb.2024-0162

OPTIMIZATION CONTROL OF MINIMUM BACKFLOW POWER FOR UAL ACTIVE BRIDGE DC-DC CONVERTER BASED ON DUAL PHASE SHIFT CONTROL

Wang Pan, Zhu Jize, Xu Hu, Zhang Guoguang, Yuan Lei, Xu Anfei

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Abstract

A minimum backflow power optimization scheme to improve the efficiency based on dual phase shift control of dual active bridge DC-DC converter is proposed. Analyze and deduce the transmission power, backflow power, and zero voltage switching characteristics under each mode. By using the Karush Kuhn Tucker（KKT） condition method combined with zero voltage switching characteristics, the optimal shift ratio combination for minimizing backflow power is solved, and a minimum backflow power optimization scheme and control strategy are proposed. An experimental prototype is built based on the proposed control strategy. The dynamic characteristics of the scheme are analyzed, and the steady-state characteristics of the scheme are compared with single phase shift control and traditional dual phase shift optimization control, including backflow power and efficiency analysis. The feasibility and effectiveness of the proposed optimization control have been verified in the experimental results.

Key words

dual active bridge DC-DC converter / backflow power / dual phase-shifting control / KKT condition method / zero voltage switching

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Wang Pan, Zhu Jize, Xu Hu, Zhang Guoguang, Yuan Lei, Xu Anfei. OPTIMIZATION CONTROL OF MINIMUM BACKFLOW POWER FOR UAL ACTIVE BRIDGE DC-DC CONVERTER BASED ON DUAL PHASE SHIFT CONTROL[J]. Acta Energiae Solaris Sinica. 2025, 46(5): 193-202 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0162

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