Development of high frequency and high voltage AC power supply

A kind of high frequency and high voltage AC power supply (HFHVACPS) which is used to generate plasma in water is introduced. The advanced low voltage AC arc technology together with the high frequency switching power supply technology, the MCU control technology, and the stepped current protection technology is adopted. A new type of circuit topology is developed and applied to the power supply. The structure and principle of operation of high frequency and high voltage AC power supply system is researched by emphasizing the high-frequency transformer since it is the difficult points in the design. The supply is also analyzed by simulation with the measured data, and the measured voltage waveform has been presented. Through the research and development of the power supply, the expected indexes gotten by adopting the new type circuit topology have been reached. The feasibility of the design can be verified by the experimental results. Furthermore, it provides full evidence for developing the system of the power supply. The frequency can be continually adjusted from 10-30 kHz, the power supply has advantages of small volume and light weight, safe working performance and convenient control and so on.