高压悬浮电压测试技术研究

发布时间：2018-01-05 20:33

本文关键词：高压悬浮电压测试技术研究　出处：《南京理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：脉冲功率源技术是电磁发射系统的关键技术之一,脉冲功率源系统具有体积庞大、结构复杂、模块与模块之间距离较远的空间分布特点,采用传统单端测试测量系统中测试点电位时,须使用较长的连接线传输信号,一方面长传输线易受强磁场干扰,另一方面传输线上的分布参数会造成信号失真,除此之外,模块与模块之间的电磁干扰、测试点对地分布参数等都将增加测试的困难程度,为了有效监测、控制电源模块的工作状态、研究空间分布参数对于电源输出的影响,需对高压悬浮电压测试技术及测试装置展开研究。主要研究工作如下:首先,对电容储能脉冲功率源系统单模块、多模块放电原理进行研究,建立PFN在不同放电阶段的状态方程,并通过电路仿真和频谱分析的方式得出待测信号的时域、频域特点。在此基础上,研究现有的几种浮地测试方法,分析每种方法的可行性,并选择差分探头进行测试。然后,针对现有差分探头在进行高压测试时量程不足的问题,对信号进行衰减处理,选择电阻型分压器模型,通过电路仿真得出影响分压器响应时间的参数,并设计硬件补偿电路以减小响应时间。搭建电容储能脉冲功率源实验平台,进行悬浮高压测试相关实验,实验结果表明,硬件补偿电路可有效减小动态电压信号的波形失真:分布参数的存在导致测试装置在进行电压测试时存在一定误差。最后,分析误差产生的原因,采取二级滤波的动态电压修正方法,计算测试装置的传递函数,并将计算数据代入MATLAB中搭建系统仿真模型,对电压测试的结果进行修正处理,将修正波形与理论计算波形加以对比,得出经二级滤波修正后波形更加接近理论波形的结论。
[Abstract]:Pulsed power technology is the key technology of electromagnetic launch system, with large volume, complex structure of pulse power source system, the spatial distribution characteristics between the module and the module of the distance, the potential of traditional test single end testing measurement system, signal transmission line must be connected with a longer, a long transmission line easily due to the interference of a strong magnetic field, on the other hand, the distribution parameters of the transmission line will cause signal distortion, in addition, the electromagnetic interference between modules, test points of distribution parameters will increase the degree of difficulty of the test, in order to effectively monitor, control power supply module working state, affect the spatial distribution of parameters for power output the need to study high suspension voltage test method and test device. The main research work is as follows: firstly, the capacitive pulse power supply system for single mode, multi module Research on electrical principle, the establishment of PFN in the state equation of the different discharge stages, and through the analysis of circuit simulation and the time-domain spectrum, the signal frequency characteristics. On this basis, research on the testing method of floating current, feasibility analysis of each method, and choose the differential probe test. Then, aiming at the existing problem of the differential probe range in high voltage test, the signal attenuation, selection of resistance type voltage divider model, through circuit simulation of voltage divider response time parameters, and design the hardware compensation circuit to reduce the response time was set up. The capacitive pulse power source of the experimental platform. The suspension of high voltage test, the experimental results show that the waveform hardware compensation circuit can effectively reduce the signal distortion: dynamic voltage distribution parameters due to the existence of the test device in voltage measurement There is a certain error test. Finally, the causes of error analysis, adopt dynamic voltage correction method two level filter, transfer function calculation of the test device, and the calculated data into the MATLAB build system simulation model, the voltage testing result is corrected, the correction waveform waveform compared with the theoretical calculation, obtained by the the two stage filter modified waveform waveform closer to the theoretical conclusion.

【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM15;TM933.2

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