A research team led by Kim Myong Hui, a researcher at the Nano Physics Engineering Institute, has developed a dielectric barrier discharge (DBD) ozone generator power supply, and analyzed the discharge characteristics of load through a simulation on the ozone generator power supply circuit by MATLAB 7.0 to increase ozone production and improve the efficiency of the ozone generation supply.
The DBD ozone generator is largely composed of an ozone generating tube and an inverter power supply. In order to increase ozone production, it is necessary to improve the efficiency of the power supply by matching the power supply and the ozone generating tube.
The DBD ozone generator power supply consists of a rectifier, a filter, an inverter and a booster.
For matching, they connected the compensation inductor for constructing the resonant circuit in series with the circuit.
Then, they carried out a simulation analysis of a voltage-type load series resonant DBD ozone generator power supply by MATLAB Simulink. The main parameters of the simulated DBD ozone generator power supply are input voltage 220V/50 Hz, power 600W, frequency 4kHz, transformer primary voltage 250V, secondary voltage 3 000V, discharge gap capacitance 1nF and dielectric capacitance 5nF.
The simulation result demonstrates that if a resonant circuit is constructed by series connection of the compensation inductor to the transformer primary or secondary side, the load current and discharge voltage phases are almost identical, i.e., the matching of the power supply and the ozone generating tube can be ensured and the efficiency of the power supply can be raised.
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