基于超导脉冲变压器的两级XRAM电路实验

Experimental research on XRAM circuit Based on HTS pulse transformers

将高温超导脉冲变压器和XRAM电路相结合,理论上可以降低电感充电功率的要求并可以获得高幅值的电流脉冲。基于两个小型高温超导脉冲变压器模块搭建了XRAM结构的连续脉冲电源电路实验平台,并分别在常温和液氮温度下对电路进行了验证性实验。在5 Hz的固定工作频率下,液氮温度下测得的实验波形与仿真波形基本一致,且需要的初级充电功率为1.35 kW,远小于常温下34.2 kW的功率需求。实验结果证明了基于高温超导脉冲变压器的XRAM电路是可行的,且相对于传统电感储能,超导电感储能在降低对初级充电电源的电压和功率要求方面具有非常大的优势。

Combining the high-temperature superconducting(HTS) pulse transformer with the XRAM circuit can theoretically reduce the charging power requirements of the inductors and obtain high-amplitude current pulses. Based on two small HTS pulse transformer modules, an XRAM structure continuous pulsed power supply circuit experiment platform was built, and verification experiments on the circuit at room temperature and liquid nitrogen temperature were conducted. At a fixed operating frequency of 5 Hz, the experimental waveforms measured at the liquid nitrogen temperature were basically the same as the simulated waveforms. The required primary charging power was 1.35 kW, which was much smaller than the power demand of 34.2 kW at room temperature. The experimental results prove that the XRAM circuit based on HTS pulse transformers is feasible. Compared with the traditional inductive energy storage, superconducting inductive energy storage has a great advantage in reducing the voltage and power requirements of the primary charging power supply.