陶瓷电容分压器幅度线性度研究
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Study on amplitude linearity of ceramic capacitance voltage divider
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    摘要:

    高功率电脉冲装置常使用电容分压器监测其电压值。电容分压器的幅度线性度表征了分压器在大电压与小电压下分压比的一致程度。线性度的好坏直接关系到监测的电压值的准确程度。本文对陶瓷电容分压器进行原理分析,并通过仿真软件在脉宽为200 ns的矩形脉冲高压源(500 V~4 kV)与半高宽约为10 μs的冲击高压源(10~100 kV)下分别对陶瓷电容分压器的性能进行仿真,并设计加工。之后分别采用两种高压源对分压器进行实验研究,研究显示,陶瓷电容分压器的幅度线性度在500 V~100 kV之内为1.5%,线性度较好,可以将小信号下校准的分压比用于大信号的测量中。

    Abstract:

    Capacitance voltage dividers are often utilized to monitor voltage values in high power electrical pulse devices. The amplitude linearity of the capacitive voltage divider characterizes the consistency of the voltage value monitored. In this paper, the principle of the ceramic capacitance divider is analyzed, and the performance of the ceramic capacitance divider is simulated by the simulation software under the rectangular pulse high-voltage source(500 V-4 kV) with a pulse width of 200 ns and the impulse high-voltage source(10 kV-100 kV) with a half-width of 10 μs respectively, and the design and processing are carried out. The results show that the amplitude linearity of the ceramic capacitor voltage divider is 1.5% within the range of 500 V-100 kV, and the linearity is good. The voltage divider calibrated under small signals can be applied to the measurement of large signals.

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郭晓东,朱宇洁,魏 竹,王建忠.陶瓷电容分压器幅度线性度研究[J].太赫兹科学与电子信息学报,2020,18(6):1151~1156

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  • 收稿日期:2019-08-16
  • 最后修改日期:2019-11-04
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  • 在线发布日期: 2020-12-28
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