Abstract
This paper presents a high-frequency load resonant IGBT inverter with a series-compensated resonant inductor and high-voltage transformer for silent discharge ozonizer power supply which is designed so as to be operated under a principle of Pulse Density Modulation (PDM) strategy. This type of inverter is evaluated on the basis of the circuit modeling of the silent discharge-based ozone generating tube and high-frequency transformer. It is noted that the pulse density modulated load resonant high-frequency inverter using IGBTs makes an ozonizer power control scheme simple and efficient as well as this control procedure can improve the ozone generating characteristics. Thus, it is more effective to increase the ozone producing efficiency. Finally, it is proved that the load-resonant inverter type PDM controlled ozonizer developed in this paper can provide stable and efficient silent discharge characteristics over a wide output power range from 10% to 100%.
