Research On Model Optimization And Control Design Of High Frequency Electrodeless Lamp

High frequency electrodeless lamp(Hereinafter referred to as electrodeless lamp),as a new light source, attracts more and more widespread attention with its energy saving, long life and other significant advantages. However, research on electrodeless lamp is still in the exploratory stage. Bulb reaction of electrodeless lamp is relatively complex and it is difficult to establish model. Electrodeless lamp power circuit is not stable over time and is difficult to control. These factors have become non-physical barriers of applications of electrodeless lamp widely.In this paper, electrodeless lamp bulb plasma reaction process model is built across Comsol software and neural network method and the created model is optimized through genetic algorithm. This research realized the control to the output voltage of the power factor correction circuit and adjustment to the high frequency resonance circuit. This paper provides a new way of thinking about the design and control of electrodeless lamp and my specific work as follows(1) For the problem that it is difficult to measure and reappear the dates of electrodeless lamp in vivo response,this paper establishes a visual model of plasma reactor in electrodeless lamp bulb across adding the bulb geometry and physical processes reactions to the Comsol simulation platform. The data of two parameters that can decide lighting efficiency of a plasma reaction process-- the mass fraction of 63P1 Hg and electron temperature are obtained by the calculation of sectional data. light electrodeless lamp lighting efficiency model by plasma reactor is established through the neural network. And the model is optimized by means of genetic algorithm. Solving the optimal parameters of the pressure inside the bulb, the reaction temperature, the output frequency of the coupler, the input power and the initial electron density are obtained on the optimal lighting efficiency conditions. The results provide a basis for the improvement of lamp production and product quality.(2) For the problem that the output voltage receiving interference of power factor correction circuit in electrodeless lamp is difficult to control, a adjustable resistor and PID controller are added to the circuit. The controller achieves stable control of the output voltage by controlling the adjustable resistor. The same time, For the problem that the working frequency of high-frequency resonant circuits cannot be adjusted, The voltage of resonant circuit is fed back to the driving circuit and A adjustable inductance is added to the circuit. The working frequency is adjusted by adjusting the inductance. The simulation results show that the output voltage of power factor correction circuit is controlled stably in interference and still be stable at the optimal parameter. The working frequency of high frequency resonant circuit can be adjusted accurately according to the design and the design is feasible and accurate.