Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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High gain DC-DC converter based on magnetic integration

  • Shengwei Gao (School of Electrical Engineering, Tiangong University) ;
  • Sen Wang (School of Electrical Engineering, Tiangong University) ;
  • Kaixin Zhao (School of Electrical Engineering, Tiangong University) ;
  • Haobo Zhang (School of Electrical Engineering, Tiangong University)
  • Received : 2024.04.11
  • Accepted : 2024.09.19
  • Published : 2025.04.20
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Abstract

To improve the voltage gain of DC-DC converters, this study introduces a high-gain DC-DC converter based on magnetic integration. By utilizing C-D-D-C units to achieve a reduced duty cycle, the desired voltage gain is attained. Integration technology is employed to merge two inductors and wind them around a pair of EE magnetic cores, effectively reducing the size and weight of the magnetic components. First, by analyzing the stresses on the converter power semiconductor devices, the relationship between converter voltage gain and the duty cycle is established. Second, the decoupling condition of the integrated inductor using Ohm's law of magnetic circuits is determined. Then, the magnet using finite-element simulation is analyzed. Finally, an experimental prototype is constructed to validate the proposed converter and the integrated magnet decoupling theory, demonstrating that this design is correct and feasible.

Keywords

Acknowledgement

This work was supported in part by the National Natural Science Foundation of China (NSFC) under Grant (51807139) and the National Natural Science Foundation of China (NSFC) under Grant (11974343).

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