Research Of Large Pulsed Current Test

Measurement of pulsed high currents discharged by large power pulse supply of ETC Guns was researched.By studying the characteristics of the high alternating currents, the testing system was designed and set up. The main works are as follows:By means of theoretical analysis and research of multi-module PFN, theoretical computing module of multi-module PFN was established. The paper analyzed the factors that affect the shape of current waves. At the same time, the paper analyzed characteristics of frequency components of the pulsed high current by FFT.The paper designed the Rogowski coil, and analyzed its properties. The reason why traditional coil causing error was analyzed. Critical problem in designation of coil was discussed. Amorphous alloys was chose as magnetic core. The performance of this coil was compared to the coil with other material magnetic core.The coil we established was used to test the high pulsed current. The testing system is just like a high passed filter, which causes low frequency error. The paper discussed the method of modification. By inverse filter, the good current waves can be obtained.The paper use MATLAB for computing and signal processing.