The Research And Design Of The Power Supply For Novel Ozonier

At present, the most common method of ozone generation is the dielectric barrier discharge, named as DBD method. As the relative circuits and electrical parameters of the ozonier have been defined, the performances and the qualities of the power supply of the ozonier become the key points of the efficiency of the DBD methods that generate the ozone.During the operation, the topologies of the power supply which used in nowadays, its main power switches of the inverter may more or less cause switching losses, especially at high-operating frequency, which make the absorbing loops of the power switches and the controlling sequences relatively complexity. Otherwise, the power factor of the power system becomes very low. These disadvantages extremely affect the improving of the circuit's operating efficiency and the switching frequency as well as the power of the ozonier.After thoroughly researched the topology of the dual-frequency quasi-resonant inverter, this paper transplanted that to a power supply of ozonier, and then, a novel dual-frequency quasi-resonant ozonier power supply was presented. After that, a dual-frequency quasi-resonant ozonier inverting system which based on dual-frequency inverting topology was build. Later, the inverting circuits were offered, then, the thesis carefully researched the operating theories and modes. Moreover, the math models of the each modes of the power supply were deduced in time area in half period. Based on the math models, the calculate formulas of the adjusting characteristics and the main parameters in particular: discharge power and the maximum voltage of the dielectric layer were gotten.Otherwise, this thesis has researched and designed a control system of the power supply of dual-frequency quasi-resonant ozonier based on DSP-TMS320LF2407. Then make the creation of the PWM pulse into reality as well the digital phase loop locked and the real time digital deadtime-modulation. The hardware circuits of the each function modules about the power control system then were put forward, particularly zero crossing detection, phase-comparing, IGBT-driving circuits.Meanwhile, the research on pre-charge starting method of the dual-frequency power supply was successful by particularly analyzing the pre-charging circuit and starting circuit as well as the starting process. Via the researches of designing and...