A high power charging power supply for capacitor in pulsed power system

2017 IEEE 21st International Conference on Pulsed Power (PPC) Pub Date : 2017-06-01 DOI:10.1109/PPC.2017.8291222

Jun Zhou, H. Ding, Yening Liu, Zhangfei Zhao, Yongheng Huang, X. Fang, Qingjian Wang

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引用次数: 3

Abstract

High pulsed magnetic field, particle accelerator, strong laser, electromagnetic emission and other pulsed power systems require energy provided by fast charging capacitor with short duration and high density. It is necessary to recharge the capacitor to specific voltage by charging power supply after the discharge of energy stored in the capacitor. Charging power supply applied in high power capacitive pulsed system has the characteristics of high voltage, large charging current and high efficiency, and such characteristics provide opportunities and challenges to its research and development. At Wuhan National Magnetic Field Center, a scheme of high power charging power supply applied in capacitive pulsed power system for high pulsed magnetic field is proposed with parameters of 15 kV rated voltage, 770 A maximum current and 8.3 MW peak power. Multiple BUCK circuit topology is employed to reduce charging current ripple and each BUCK circuit operates reliably in discontinuous continuous current mode to eliminate the overvoltage caused by reverse recovery of freewheeling diode. Simulation model of the designed charging power supply is established that simulation result shows the validity and feasibility of the scheme.

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一种用于脉冲电源系统中电容器的大功率充电电源

高脉冲磁场、粒子加速器、强激光、电磁发射等脉冲电源系统都需要快速充电电容器提供能量，其持续时间短、密度高。将电容器中储存的能量放电后，需要通过充电电源将电容器充电到特定的电压。大功率容性脉冲系统中应用的充电电源具有高电压、大充电电流和高效率的特点，这些特点为其研发提供了机遇和挑战。在武汉国家磁场中心，提出了一种适用于高脉冲磁场容性脉冲电源系统的大功率充电电源方案，其参数为额定电压15 kV，最大电流770 a，峰值功率8.3 MW。采用多个BUCK电路拓扑减小充电电流纹波，每个BUCK电路在断续连续电流模式下可靠工作，消除自由转二极管反向恢复引起的过电压。对所设计的充电电源建立了仿真模型，仿真结果表明了该方案的有效性和可行性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2017 IEEE 21st International Conference on Pulsed Power (PPC)

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