High frequency pulse width modulator with resistance capacitance combination technology

Abstract

Based on the important role of high frequency pulse power supply in the process of electro hydraulic beam processing, aiming at the particularity of the processing technology, an innovative scheme to realize the frequency modulation duty ratio is proposed.According to the high voltage high frequency adjustable pulse power requirements, design of control circuit and frequency generator, it is derived that element parameters meet the design requirements and the physical production, the use of power electronic equipment control experimental platform is built, the frequency signal waveform, voltage duty ratio, IGBT on-off control for a series of experiment.The experimental results show that the developed frequency pulse width modulator and drive circuit can drive the full bridge circuit of IGBT, and can control the light bulb (load) under the high frequency, and the rationality of the device and the design are verified.