王坤, 冯嘉祺, 李志远, 张云香. 高压电容补偿型快前沿脉冲电阻分压器研究[J]. 高电压技术, 2025, 51(1): 459-466. DOI: 10.13336/j.1003-6520.hve.20240240
引用本文: 王坤, 冯嘉祺, 李志远, 张云香. 高压电容补偿型快前沿脉冲电阻分压器研究[J]. 高电压技术, 2025, 51(1): 459-466. DOI: 10.13336/j.1003-6520.hve.20240240
WANG Kun, FENG Jiaqi, LI Zhiyuan, ZHANG Yunxiang. Research on Resistive Divider with Capacitance Compensation for Fast-front Pulsed Voltage[J]. High Voltage Engineering, 2025, 51(1): 459-466. DOI: 10.13336/j.1003-6520.hve.20240240
Citation: WANG Kun, FENG Jiaqi, LI Zhiyuan, ZHANG Yunxiang. Research on Resistive Divider with Capacitance Compensation for Fast-front Pulsed Voltage[J]. High Voltage Engineering, 2025, 51(1): 459-466. DOI: 10.13336/j.1003-6520.hve.20240240

高压电容补偿型快前沿脉冲电阻分压器研究

Research on Resistive Divider with Capacitance Compensation for Fast-front Pulsed Voltage

  • 摘要: 为解决纳秒级金属丝电爆炸中快前沿脉冲电压的精确测量难题,研制了一种带有电容补偿的电阻分压器。对地杂散电容以及高、低压臂两端的寄生电容是影响电阻分压器高频特性的主要因素,通过对金属丝电爆炸腔体进行三维建模来设计补偿电容的结构,提出了补偿杂散电容的方法。电阻分压器使用较高介电强度与介电常数的凝胶作为补偿电容介质来提升最高工作电压。模型的仿真结果表明,分压器能够在直流到100 MHz的宽频带范围内保持稳定的分压比和输出电压相位。采用直线型变压器驱动源产生的纳秒级前沿高压方波对分压器进行标定,并测量了金属丝电爆炸实验中的电压波形。该研究设计的电容补偿型电阻分压器能够精确地测量纳秒级前沿金属丝电爆炸的电压波形。

     

    Abstract: In order to solve the problem of measuring the fast-rising pulsed voltage in nanosecond electrically exploding wires, a resistive divider with capacitance compensation is constructed. The stray capacitance to the ground and the parasitic capacitance at the end of resistive arms are the main factors affecting the high frequency response of the resistive divider. Therefore, a method for compensating the stray capacitance through theoretical analysis is presented, and a three-dimensional model is built using the finite element analysis software to assist the design of the compensation capacitor. In order to increase the maximum operating voltage, a gel with a high dielectric strength and dielectric constant is applied as the medium of compensating capacitor. The simulation results of the model show that the voltage divider can maintain a stable voltage divider ratio and output voltage phase in the wide-band domain ranging from DC to 100 MHz. The resistive divider is calibrated with a high voltage of pulsed square wave generated by a linear transformer driver. The resistive divider is implemented in a compact pulsed power generator. The designed resistive divider with capacitance compensation can be adopted to accurately measure the voltage waveform of nanosecond electrically exploding wires.

     

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