高变比螺线空芯脉冲变压器

High transformation ratio and conical spiral air-cored pulse transformer

设计并理论分析了高变比型螺线空芯脉冲变压器的输出特性,讨论了变压器次级输出电压达到最佳值的条件,对设计的空芯变压器进行了模拟计算和实验研究。结果表明:该种变压器型脉冲功率电源可直接利用市电充电,在初级变储能电容器充电800V的条件下,变压器次级所接形成线负载的输出电压达到350kV,变压器设计变比1∶700、耦合系数0.52;实验结果与计算基本吻合。

Output charactrisitics of air-cored pulse transformer composed of tapered spiral winding are theoretically analysed. Parameters in the equivalent circuit are calculated to optimize output voltages. A compact spiral air-cored pulse transformer with high transformation ratio is built, which can be used on ultra-wideband system.The transformer can be charged by commercial power instead of high voltage source. The experimental result indicates that the output voltage on PFL reaches 350 kV when input voltage of charging capacitor is 800 V, with a tranformation ratio of 1∶700 and a coupling coefficient of 0.52. The result agrees with that of calculation.