600kV直线变压器驱动源的设计与模拟

基于对125 kV直线型脉冲变压器驱动源(LTD)模块的实验研究,设计了脉冲形成线为Blumlein结构的150 kV LTD模块,并在此基础上设计了输出电压600 kV、四级模块串联运行的LTD装置。根据理论计算的结果选择了LTD次级线圈的尺寸,通过电路和3维模拟,分析了不同输入方式对输出脉冲波形的影响,结果表明:左端输入方式输出脉冲波形好于右端输入方式;与单边输入方式相比,双边对称输入方式得到的载脉冲波形的前沿更好。根据600 kV LTD装置的设计参数进行了电路模拟,在40Ω匹配负载上得到的输出脉冲波形前沿(10%~90%)约30 ns、平顶约110 ns、后沿约30 ns、幅值约600 kV,满足绝缘耐压要求。

Physical design and simulation of LTD-based source with long pulse and high power

A linear transformer driver (LTD) module with 150 kV output capability was designed based on a former 125 kV LTD module, which used Blumlein line as the pulse forming line. A 600 kV LTD system was contrived with four newly designed modules connected in series. Calculation and simulation were done, respectively, to decide the dimensions of the secondary coil of the LTD equipment which also sufficed the requirement about insulation, and to analyze the influence of input mode on output pulse. The results show that the output pulse waveform of the left input type is better than the right input type, and compared with the unilateral input mode, the rising time of the symmetrical input mode is shorter. The result of circuit simulation proves that the LTD system can drive a 40 Ω load with a 600