用于脉冲功率装置调试的高功率电阻分压器型负载
Resistance-voltage-dividing load for testing of pulsed power equipment
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摘要: 介绍了电阻分压器型负载的结构、分压原理和设计方法，分析了高频作用下趋肤效应对负载阻值的影响，计算了负载和真空腔内的电场强度分布以及负载的等效电感和等效电容，利用Pspice程序模拟了回路参数对输出信号的影响。对负载的分压比进行了标定，标定结果为7.59×10-5。为避免闪络现象的发生，设计加工接地金属套筒，用来降低负载阴极三结合点处的电场强度。负载工作电压幅值428 kV，电流幅值9.48 kA，工作阻抗45 Ω，电压和电流波形与设计值符合得较好，满足设计要求。Abstract: The structure, voltage-dividing theory and design method of the load were presented. The influence of skin effect on the load’s resistance in high frequency was analyzed. The distribution of electric-field intensity in the load and vacuum cavity was calculated. The equivalent capacitance and inductance of the load were calculated, of which the influence on the output waveforms was simulated using Pspice program. The ratio of output to input voltage amplitude is calibrated to be 7.59×-5. In order to avoid flashover, a metal sleeve was designed to reduce the electric field intensity at the cathode triple junction. The amplitudes of the operating voltage and current are 428 kV and 9.48 kA respectively. The resistance is calculated to be 45 Ω, consistent with the design value and
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Key words:
- load /
- resistance voltage divider /
- flashover /
- high power /
- skin effect /
- pulsed power equipment
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