Journal of Modern Power Systems and Clean Energy

ISSN 2196-5625 CN 32-1884/TK

Dynamic and static performance optimization of dual active bridge DC-DC converters
Author:
Affiliation:

1. School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China; 2. Locomotive & Car Research Institute, China Academy of Railway Sciences, Beijing 100081, China

Fund Project:

This work was supported by the National Natural Science Foundation of China (No. 51577160).

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    Abstract:

    High efficiency and fast dynamic response are two main control objectives for dual active bridge (DAB) DC-DC converters. Traditional extended phase shift (EPS) control can significantly enhance the conversion efficiency of DAB DC-DC converters by reducing current stress; however, it cannot fulfill fast dynamic response requirements. In this paper, a novel hybrid control scheme consisting of EPS control and direct power control (DPC), named as EPS-DPC, is proposed. EPS-DPC control has salient features in both efficiency and dynamic performance. In order to verify the outstanding performance of the proposed EPS-DPC scheme, an experimental comparison was carried out on a scale-down DAB DC-DC converter among several control strategies, including single phase shift control with traditional voltage-loop (SPSTVL), EPS control with traditional voltage-loop (EPSVTL), and EPS-DPC. Experimental results have been high consistent with theoretical analysis, and verified these advantages of the proposed EPS-DPC scheme.

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  • Received:
  • Revised:
  • Adopted:
  • Online: May 10,2018
  • Published: