Journal of Power Electronics

  • 제13권5호
  • /
  • Pages.746-756
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  • 2013
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  • 1598-2092(pISSN)
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  • 2093-4718(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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Analysis of the Internal Electrical Characteristics of Electronic Power Transformers

  • Yi, Yang (State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology) ;
  • Mao, Cheng-Xiong (State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology) ;
  • Wang, Dan (College of Electrical and Electronic Engineering, Huazhong University of Science and Technology) ;
  • Lu, Ji-Ming (College of Electrical and Electronic Engineering, Huazhong University of Science and Technology)
  • 투고 : 2012.06.19
  • 발행 : 2013.09.20
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초록

The modularized subunit of an electronic power transformer (EPT) is a series connection of two H-bridge voltage-source converters and a DC-DC converter with a high-frequency isolation transformer (HFIT). On the basis of cascading and paralleling the modularized subunits, EPT can be used in high-voltage and large-current applications in the power system. This paper discusses the steady state analysis of the modularized subunit of EPT. Theoretical analysis considers the influences of the two H-bridge voltage-source converters on the two sides of the DC-DC converter. We deduce the formulas of the theoretical calculation on the internal electrical characteristics of EPT (e.g., the voltages of the DC-bus capacitor and the primary side peak current of the HFIT). This paper provides guidance on the design and selection of EPT key elements (e.g., the DC-bus capacitors and HFIT). Experimental results are obtained from a single subunit of a laboratory model rated at 962 V, 15 kVA. All calculations, simulations, and experiments confirm the theoretical analysis of the subunit of EPT.

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참고문헌

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  4. Analysis of electromagnetic force for medium frequency transformer with interleaved windings vol.11, pp.8, 2017, https://doi.org/10.1049/iet-gtd.2016.1586
  5. An Isolated Bidirectional Modular Multilevel DC/DC Converter for Power Electronic Transformer Applications vol.16, pp.3, 2016, https://doi.org/10.6113/JPE.2016.16.3.861