Design of high voltage constant current charging power supply based on LC series resonance

Jiang Jinbo; Xu Lin; Luo Zheng; Yang Wen; Tang Ming; Yao Yandong; Chen Rui

doi:10.11884/HPLPB202436.230295

Volume 36 Issue 5

Apr. 2024

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Jiang Jinbo, Xu Lin, Luo Zheng, et al. Design of high voltage constant current charging power supply based on LC series resonance[J]. High Power Laser and Particle Beams, 2024, 36: 055006. doi: 10.11884/HPLPB202436.230295

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Jiang Jinbo, Xu Lin, Luo Zheng, et al. Design of high voltage constant current charging power supply based on LC series resonance[J]. High Power Laser and Particle Beams, 2024, 36: 055006. doi: 10.11884/HPLPB202436.230295

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Design of high voltage constant current charging power supply based on LC series resonance

doi: 10.11884/HPLPB202436.230295

1.
College of Engineering and New Energy, China Three Gorges University, Yichang 443002, China
2.
Hubei Provincial Engineering Research Center for Power Transmission Line, China Three Gorges University, Yichang 443002, China
3.
State Grid Enshi Power Supply Company, Enshi 445000, China

Received Date: 2023-09-04
Accepted Date: 2024-01-13
Rev Recd Date: 2024-01-12

Available Online: 2024-03-02

Publish Date: 2024-04-28

Abstract

Abstract

LC series resonant high voltage constant current charging power supply can realize high efficiency and fast charging of the capacitor and has an excellent capacity of anti-load short-circuit, hence it has extensive application prospects in high repetition frequency pulsed power systems. The efficiency of the charging power supply is a crucial factor to determine the ability of the system to operate at repetition rate. Improving efficiency is the primary goal of designing high-voltage capacitor charging power supply. According to the working principle of LC series resonant circuit, it is analyzed that the operating mode of power supply, the switching frequency of the inverter bridge and the distribution parameters of the high-frequency transformer are the main ingredients affecting the efficiency. For a DC power supply with a power of 10 kW and an output voltage of 40 kV, the main circuit parameters were calculated and the circuit model was established using Pspice to verify its accuracy. The soft switching technology was used to reduce the switching loss, and the high frequency transformer with smaller distribution parameters was designed to further improve the efficiency. On this basis, the overall structure design of the power supply was completed. Finally, the charging characteristics of the power supply were tested. Experimental tests indicate that the power supply can charge a 0.1 µF capacitor to 39.5 kV within 37 ms, and the charging efficiency of the power supply is 87.1%.
- high voltage DC power supply,
- LC series resonance,
- constant current charging,
- charging efficiency,
- high voltage capacitor charging

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References(18)

References

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