Practical Evaluation of Loss Reduction in Isolated Series Resonant Converter with Fixed Frequency Modulation

Danish Khan, Pengfei Hu, Muhammad Waseem, Muhammad Yasir Ali Khan, Mustafa Tahir and Andres Annuk
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Danish Khan: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Pengfei Hu: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Muhammad Waseem: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Muhammad Yasir Ali Khan: College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China
Mustafa Tahir: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Andres Annuk: Institute of Forestry and Engineering, Estonian University of Life Sciences, 51006 Tartu, Estonia

Energies, 2022, vol. 15, issue 16, 1-20

Abstract: Nowadays, power converters with reduced cost, compact size and high efficiency are evolving to overcome the emergent challenges of renewable energy integrations. In this context, there is an increased demand for well-designed power converters in renewable energy applications to reduce energy utilization and handle a variety of loads. This paper proposes a center-tapped bridge cascaded series-resonant LC dual active bridge (DAB) converter for DC-DC conversion. The low part count of the proposed converter enables a high-power density design with reduced cost. The proposed converter offers reduced conduction losses as the reverse current is eliminated by adopting current blocking characteristics. Reverse current blocking also enables zero voltage switching (ZVS) and zero current switching (ZCS) over a wide operating range. Therefore, using a simple fixed frequency modulation (FFM) scheme offers a wide operating range compared to a conventional DAB converter. A thorough comparison of the proposed converter and a conventional DAB converter is provided based on conduction losses and switching losses to illustrate the performance improvement. Lastly, the effectiveness of the proposed converter is validated through simulation and experimental results.

Keywords: LC tank circuit; center-tapped (CT) bridge; zero current switching (ZCS); series resonant converter (SRC); discontinuous conduction mode (DCM); zero voltage switching (ZVS) (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: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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