Bi-polar high-voltage pulse generator using semiconductor switches

Abstract

A very fast bi-polar high voltage pulse power generator using semiconductor switches is proposed. The proposed system is made up of a thyristor based-rectifier, DC link push-pull resonant inverter, a high voltage transformer, charging capacitors, a high voltage bilateral IGBT switch stacks, and a variable capacitor. The proposed system makes bi-polar high voltage sinusoidal waveform using resonance between leakage inductance of the transformer and secondary capacitor and transfers energy to output load at maximum of the secondary capacitor voltage. The proposed pulse power supply has simple structure using one switch module without DC energy storage and gives high efficiency.