HIGH-VOLTAGE SOURCE WITH OUTPUT VOLTAGE UP TO 60 kV WITH OUTPUT CURRENT UP TO 500 mA

I.A. Gusev, A.S. Medvedko, A.Yu. Protopopov, D.N. Pureskin, D.V. Senkovª

Budker Institute of Nuclear Physics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

Abstract

The presented report contains the description of high-voltage source with output voltage up to 60 kV and output current up to 500 mA. The source consist of the converter with IGBT switches, working with a principle of pulse-width modulation on programmed from 15 to 25 kHz frequency, and the high voltage sectioned transformer with the rectifier and additional capacitive filter. The transformer is placed in oil tank with silicon oil. The additional capacitive filter provides low ripple and noise level in working range of output currents. The design of the high-voltage transformer provides preservation of working capacity at voltage up to 100 kV. The stored in transformer and matching circuit energy is less than 15 J at maximum operating voltage 65 kV. The efficiency of system is more than 80% at the nominally output power 30 kW. The controller of the source is developed with DSP and PLM, which allows optimizing operations of the source, optimizing short circuit protection and transient process for load variation. Transient process is less than 6 kV in voltage and the transient process time is less than 5 ms for full load variation from 0 to 500 mA. For control of the source serial CAN-interface is used. The description of the source and the test results are presented.

ª – corresponding author

Paper 

168