Design and testing of 45 kV, 50 kHz pulse power supply for dielectric barrier discharges

The design, construction, andtesting of high frequency, high voltage pulse power supply are reported. The purpose of the power supply is to generatedielectric barrierdischarges for industrial applications. The power supply is compact and has the advantage of low cost, over current protection, and convenient control for voltage and frequency selection. The power supply can generate high voltage pulses of up to 45 kV at the repetitive frequency range of 1 kHz –50 kHz with 1.2 kW input power. The output current of the power supply is limited to 500 mA. The pulse rise time and fall time are less than 2μs and the pulse width is 2μs. The power supply is short circuit proof and can withstand variable plasma load conditions. The power supply mainly consists of a half bridge series resonant converter tocharge an intermediatecapacitor, whichdischarges through a step-up transformer at high frequency to generate high voltage pulses. Semiconductor switches and amorphous cores are used for power modulation at higher frequencies. The power supply is tested withquartz tubedielectric barrier discharge load and worked stably. The design details and the performance of the power supply on no load anddielectric barrier discharge load are presented.

Source: Review of Scientific Instruments - October 11, 2016 Category: Physics Authors: Surender Kumar Sharma and Anurag Shyam Source Type: research