Backflow Power Optimization Control for Dual Active Bridge DC-DC Converters

Fei Xiong, Junyong Wu, Liangliang Hao and Zicheng Liu
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Fei Xiong: School of Electrical Engineering, Beijing Jiaotong University, Haidian District, Beijing 100044, China
Junyong Wu: School of Electrical Engineering, Beijing Jiaotong University, Haidian District, Beijing 100044, China
Liangliang Hao: School of Electrical Engineering, Beijing Jiaotong University, Haidian District, Beijing 100044, China
Zicheng Liu: School of Electrical Engineering, Beijing Jiaotong University, Haidian District, Beijing 100044, China

Energies, 2017, vol. 10, issue 9, 1-27

Abstract: This paper proposes optimized control methods for global minimum backflow power based on a triple-phase-shift (TPS) control strategy. Three global optimized methods are derived to minimize the backflow power on the primary side, on the secondary side and on both sides, respectively. Backflow power transmission is just a portion of non-active power transmission in a dual active bridge (DAB) converter. Non-active power transmission time is proposed in this paper, which unifies zero power transmission and backflow power transmission. Based on the proposed index, an optimized control method is derived to achieve both the maximum effective power transmission time and minimum current stress of DAB at the same time. A comparative analysis is performed to show the limitations of the minimum backflow power optimization method. Finally, a prototype is built to verify the effectiveness of our theoretical analysis and the proposed control methods by experimental results.

Keywords: dual active bridge (DAB); optimization control; backflow power; non-active power (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: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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