Few seconds and −40kV compact high voltage pulse power supply

To drive cathode of Magnetron Injection Gun (MIG), long pulse high voltage power supply (HVPS) is needed. HVPS have to be few seconds continuously -40 kV, 280 kW with rise and fall time less then 1 ms, and Included ripple stability of HV output is less than 1%. In order to develop HVPS, eight HVPSs are parallel operated by each power supply phase shifted PI control. HV pulse generation is performed by method ON and OFF of all HVPS gate drive pulse, simultaneity. Maximum output voltage and current of unit HVPS are -40kV and 1.2 A. In this paper, we will discuss topology, simulation and test results of HVPS.