40 kW digital control capacitor charging power supply

A compact 40 kW/10 kV digital control constant-current capacitor charging power supply(CCPS )has been developed based on the series resonance and high frequency inverter technologies. The logical design of resonant parameters and the high frequency high voltage transformer was adopted and the power density of 0.5 MW/m3 was achieved. The protection technology of the CCPS was studied, and the performance of the CCPS was improved by using multiple protecting techniques and safeguards. A scheme of remote control and parallel operation of the power supply was introduced. Some experimental results were given with a 1 MJ/10 kV capacitive load.