电荷泵技术在高强度气体放电灯电子镇流器中的应用

Application of CPPFC Technique in Electronic Ballasts for High Intensity Discharge Lamp

电荷泵功率因数校正 (CPPFC)技术的发展 ,使得原双功率级有源校正变换电路可简化为单功率级变换电路。该文研究了CIC(ContinuousInputCurrent) CPPFC技术在高强度气体放电灯电子镇流器中的应用 ,解决了传统双功率级电子镇流器结构复杂、成本较高的问题。提出了一种适用于高压钠灯的动态模型 ,基于此模型对不同功率的电子镇流器进行了仿真研究。仿真与实验结果表明 ,这种单功率级结构的电子镇流器的功率因数能够达到 0 .97,THD值小于 1 2 %。

Two power stage power factor correction converter can be simplified to single stage one with the development of charge pump power factor correction(CPPFC). This paper investigates the application of continuous input current CPPFC techniques in high intensity discharge lamp electronic ballast, which can decrease the component count and lower the cost. A dynamic model of high pressure sodium(HPS)lamp is proposed for further study of characteristics of electronic ballasts with different power. Experiment and simulation results verify the feasibility of HPS lamp operating at high frequency. It is shown that the presented electronic ballast has 0.97 power factor and 12% total harmonic distortion.