Transactions of China Electrotechnical Society  2018, Vol. 33 Issue (16): 3732-3742    DOI: 10.19595/j.cnki.1000-6753.tces.180464
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Multi-Module Optimized Power Balance Control Scheme of the Input-Series-Output-Parallel Operated Dual-Active-Bridge DC-DC Converters
An Feng, Wang Song, Yang Kexin
School of Electrical Engineering Southwest Jiaotong University Chengdu 610031 China

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Abstract  Through the analysis of the operation characteristics and problems of dual-active- bridge (DAB) DC-DC converters in the power electronic transformer (PET), this paper proposed a multi-module optimized power balance control scheme with triple phase-shift (TPS) to improve the efficiency, enhance the dynamic response and balance the transmission for the input-series-output- parallel operated DAB converters. Compared to traditional input voltage balance control scheme, the proposed control scheme can further improve the efficiency and dynamic performance under the input voltage step-change condition without increasing additional sensors. Finally, the traditional input voltage balance control and proposed multi-module optimized power balance control schemes were compared in a scale-down three-cell experimental platform using TMS320F28335+FPGA_6SLX45 as the core controller. The experimental results have verified the excellent performance of the proposed scheme and the theory analysis.
Key wordsPower electronic transformer (PET)      dual-active-bridge (DAB) DC-DC converter      power balance      efficiency      dynamic performance     
Received: 29 March 2018      Published: 03 September 2018
PACS: TM46  
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An Feng
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An Feng,Wang Song,Yang Kexin. Multi-Module Optimized Power Balance Control Scheme of the Input-Series-Output-Parallel Operated Dual-Active-Bridge DC-DC Converters[J]. Transactions of China Electrotechnical Society, 2018, 33(16): 3732-3742.
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