研制了一种结构紧凑、电压升压倍数高达109倍的200 kV级脉冲变压器, 以实现高压脉冲变压器的小型紧凑化。用电磁理论分析、电路模拟及实验测试3种方法对变压器的耦合、耐压和输出特性进行了研究, 对重要参数进行了计算和设计。采用晶粒取向硅钢薄带作为变压器磁芯, 且磁芯闭合, 变压器的有效耦合系数高达0.95以上。高分子材料的绝缘套筒结构和分层交替的绕线方式, 使得变压器在初级低压充电2.1 kV时, 次级可输出幅度为230 kV、半高全宽为3 μs的高电压脉冲。模拟和实验结果验证了理论设计的合理性。

A compact 200 kV pulse transformer with step-up ratio at 109 has been developed to miniaturized high-voltage pulse transformer. Researches on coupling, high-voltage insulation and output characteristics of transformer have been carried out, according to electromagnetic theory, circuit simulation and experiments. Important parameters have been calculated and designed. As the closed magnetic core of the transformer was made of crystal-tropism silicon-steel strip, effective coupling coefficient reached as high as 0.95. The insulated structure of polymeric cylinder and alternate winding method contribute much to the transformer. When initial voltage of primary energy-storage capacitor was 2.1 kV, the secondary windings of transformer can deliver a high-voltage pulse with amplitude of 230 kV and full width at half maximum (FWHM) of 3 μs. Results of simulation and experiments prove the theoretical design. The magnetic core can be made into sections, which makes convenience to increase the volume of the core. For its advantages of simplicity and low costs, the pulse transformer has been used to develop a miniature high-voltage pulse generator．