Stability Control of a Large Capacity Ozonizer Discharge by Frequency Variable Driving Method

We have developed a stable control method for a large capacity tubular ozonizer. To make a high power factor operation, it is necessary to know the electric characteristics of the discharge phenomena of the ozonizer. In this study, we theoretically discuss the discharge stability with the consideration of the effect of the matching with the driving circuit, and successfully find the operation condition for a robust control of the ozonizer discharge. To make a stable control over a wide input power range, we invent a frequency variable control method, and proved the validity of the method by measuring the voltage and current waveform of the developed ozonizer system.