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Highly Reliable Current-source Inverter with Continuous Path of Inductive Current
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Pengyao XIE, Caihui ZHU, Zihan YI, Jian QIU, Hui ZHAO, Kefu LIU
Journal of Power Supply | 2025, 23(8) : 43 - 51
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Journal of Power Supply | 2025, 23(8): 43-51
• DC-AC Inverters •
Highly Reliable Current-source Inverter with Continuous Path of Inductive Current
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Pengyao XIE, Caihui ZHU, Zihan YI, Jian QIU, Hui ZHAO, Kefu LIU
Affiliations
  • Department of Light Sources and Illuminating Engineering, School of Information Science and Technology, Fudan University, Shanghai 200433, China
Published: 2025-12-30 doi: 10.13234/j.issn.2095-2805.2025.8.43
Outline
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A current-source inverter (CSI) possesses several advantageous features, including stable output current, a wide load range and immunity to current surges during load open-circuit conditions. In applications where reliability is critical, CSIs outperform voltage-source inverters (VSIs). However, traditional CSIs suffer from significant current droop during continuous discharge and the risk of overvoltage at the inductor terminals when the load is open-circuited, limiting their practical utility. To address these limitations, the relative positions of the inductor, switches and diodes within conventional CSIs are modified, so as to enable energy replenishment during continuous discharge. Meanwhile, a continuous current path through the inductor is ensured to effectively prevent overvoltage across the inductor terminals. A detailed theoretical analysis of the proposed circuit is conducted, and it is verified by simulations. Finally, an experimental prototype was designed to further validate the feasibility of this circuit.

Current-source inverter (CSI)  /  open-circuit protection  /  overvoltage protection  /  short-circuit protection
谢鹏瑶, 朱才会, 易子汉, 邱剑, 赵晖, 刘克富. 具有电感电流连续通路的高可靠性电流源型逆变器. 电源学报, 2025 , 23 (8) : 43 -51 . DOI: 10.13234/j.issn.2095-2805.2025.8.43
Pengyao XIE, Caihui ZHU, Zihan YI, Jian QIU, Hui ZHAO, Kefu LIU. Highly Reliable Current-source Inverter with Continuous Path of Inductive Current[J]. Journal of Power Supply, 2025 , 23 (8) : 43 -51 . DOI: 10.13234/j.issn.2095-2805.2025.8.43
Appendix
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Year 2025 volume 23 Issue 8
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Article Info
doi: 10.13234/j.issn.2095-2805.2025.8.43
  • Receive Date：2024-06-05
  • Online Date：2026-10-26
  • Published：2025-12-30
Article Data
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History
  • Received：2024-06-05
  • Revised：2024-07-17
  • Accepted：2024-07-26
Affiliations
    Department of Light Sources and Illuminating Engineering, School of Information Science and Technology, Fudan University, Shanghai 200433, China
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