Ozone cell power supply apparatus and method
The present invention generally includes an ozone generation system with a power supply that measures the rate of energy delivered to the ozone generation cell. While changing voltage, frequency or current will likely affect the rate of energy delivery, current, frequency and voltage provide a very poor and unreliable control for an ozone generation cell. It is only through control of the rate of energy delivery that consistent, reliable ozone generation is possible. Based upon the measurements of the rate of energy delivery as measured at the ozone generation cell, compared to the rate of energy delivery supplied, the rate of energy delivery supplied can be adjusted to improve ozone production and control.
1. For an ozone generation system having an ozone generation cell, a transformer having a high voltage output connected to the ozone generation cell for powering the ozone generation cell, and a power supply connected to an input of the transformer, the ozone generation system having a resonant frequency during operation, a method of operation comprising:
driving current and voltage through the transformer and ozone generation cell at a driving frequency to control power delivered by the power supply to the ozone generation cell by the driving frequency;
determining a phase relationship of current and voltage driven through the transformer and ozone generation cell; and
in response to the determined phase relationship, restraining the driving frequency to a range more than the resonant frequency of the ozone generation system.
2. The method of claim 1 wherein the determined phase relationship has the current leading the voltage.
3. The method of claim 2 further comprising:
receiving operating parameters of the power supply for a targeted rate of energy delivery to the ozone generation cell.
4. The method of claim 3 further comprising:
measuring a rate of energy delivery to the ozone generation cell; and
restraining the energy delivered by the power supply to the ozone generation cell to the targeted rate of energy delivery through a feedback loop of the measured rate of energy delivery.
5. The method of claim 4 wherein the step of restraining the rate of energy delivered to the ozone generation cell is responsive to the received operating parameters and the measured energy delivery rate.