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High-gain Soft-switching DC-DC Converter with Integrated Voltage Doubling Unit
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Xinping DING  Member, CPSS1, Wanyi DAI1, Limin QUAN2, Chunlin ZHANG1, Pengcheng ZHANG1, Yinhao YU1
Journal of Power Supply | 2026, 24(8) : 24 - 34
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Journal of Power Supply | 2026, 24(8): 24-34
• Power Converter Topologies •
High-gain Soft-switching DC-DC Converter with Integrated Voltage Doubling Unit
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Xinping DING  Member, CPSS1, Wanyi DAI1, Limin QUAN2, Chunlin ZHANG1, Pengcheng ZHANG1, Yinhao YU1
Affiliations
  • 1.School of Automation, Nanjing University of Information Science & Technology, Nanjing 210044, China
  • 2.School of Information and Control Engineering, Qingdao University of Technology, Qingdao 266520, China
Published: 2026-08-30 doi: 10.13234/j.issn.2095-2805.2026.8.24
Outline
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In recent years, the development of DC microgrid has put forward requirements of high-gain and high efficiency for high-gain DC-DC converters. Based on the quasi-Z source, a high-gain soft-switching DC-DC converter with integrated voltage doubling unit is proposed. The voltage doubling unit and the coupling inductor improve the voltage Boost capability of the converter. Meanwhile, the energy of leakage inductance of the coupling inductor is recovered through the control of an active clamp structure, so that the switch realizes zero-voltage switching and the diode realizes zero voltage-zero current switching. As a result, the loss of the converter is reduced, and its performance is improved. In addition, the working principle for the converter was studied in detail, and an experimental prototype with rated power of 200 W was fabricated. The prototype was compared with the converters proposed in five references, and the feasibility and superiority of the novel converter were verified.

Voltage doubling unit  /  quasi-Z source  /  high voltage gain  /  coupling inductor
丁新平中国电源学会会员, 戴万宜, 权利敏, 张春林, 张鹏程, 俞寅昊. 集成倍压单元的高增益软开关直流变换器. 电源学报, 2026 , 24 (8) : 24 -34 . DOI: 10.13234/j.issn.2095-2805.2026.8.24
Xinping DING, Wanyi DAI, Limin QUAN, Chunlin ZHANG, Pengcheng ZHANG, Yinhao YU. High-gain Soft-switching DC-DC Converter with Integrated Voltage Doubling Unit[J]. Journal of Power Supply, 2026 , 24 (8) : 24 -34 . DOI: 10.13234/j.issn.2095-2805.2026.8.24
Funding
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  • National Natural Science Foundation of China(52077105)
  • Natural Science Foundation of Shandong Province(ZR2022ME214)
Appendix
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Year 2026 volume 24 Issue 8
36
6
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Article Info
doi: 10.13234/j.issn.2095-2805.2026.8.24
  • Receive Date：2024-06-12
  • Online Date：2026-10-29
  • Published：2026-08-30
Article Data
Affiliations
History
  • Received：2024-06-12
  • Revised：2024-09-04
  • Accepted：2024-11-19
Funding
National Natural Science Foundation of China(52077105)
Natural Science Foundation of Shandong Province(ZR2022ME214)
Affiliations
    1.School of Automation, Nanjing University of Information Science & Technology, Nanjing 210044, China
    2.School of Information and Control Engineering, Qingdao University of Technology, Qingdao 266520, China
References
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