Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Single-switch boost converter with extremely high step-up voltage gain

  • Hao, Yangyang (School of Information and Control Engineering, Qingdao University of Technology) ;
  • Li, Haibin (School of Information and Control Engineering, Qingdao University of Technology) ;
  • Li, Kai (School of Information and Control Engineering, Qingdao University of Technology) ;
  • Fang, Chengqun (School of Information and Control Engineering, Qingdao University of Technology) ;
  • Ding, Xinping (School of Information and Control Engineering, Qingdao University of Technology)
  • Received : 2020.02.20
  • Accepted : 2020.09.07
  • Published : 2020.11.20
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Abstract

This paper presents a single-switch high-voltage gain DC-DC converter with a coupled-inductor. The proposed converter overcomes the drawbacks of traditional DC-DC converters such as insufficient boost capability and high stress on the devices. Its advantages include having a small number of switch devices, low voltage stress on the switch, and a high voltage gain. This paper analyzes the operating modes of the proposed converter in detail and derives the voltage/current stresses on the components. The efficiency of the converter and the power dissipation distribution are quantitatively studied. To verify the efficiency and feasibility of the proposed converter, a 200 W prototype was built in the laboratory. Experimental results obtained from the prototype match well with the theoretical analysis. The highest efficiency is equal to 95.82%, which can be obtained at half of the rated output power.

Keywords

Acknowledgement

This study was funded by National Natural Science Foundation of China (Grant number 51477079).

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