一种新型车载HID灯电子镇流器准谐振拓扑研究

Design of a New Type of Quasi-resonant HID Lamp Electronic Ballast Topology

针对传统车载HID灯电子镇流器工作效率低的问题,提出并研究了一种新型车载HID灯电子镇流器准谐振拓扑。与传统车载HID灯电子镇流器拓扑相比,该新型车载HID灯电子镇流器准谐振拓扑的开关管工作于零电压导通(Zero Voltage switching,ZVS)状态,二极管工作于零电流关断(Zero Current switching,ZCS)状态,实现了高效率功率变换。同时,该新型车载HID灯电子镇流器准谐振拓扑能够快速响应负载变化,简化了DC-DC变换器设计。详细分析了这种新型车载HID灯电子镇流器准谐振拓扑的工作原理及关键参数的设计原则,最后通过实验验证了理论分析的正确性。

Due to the problems of poor efficiency performance in traditional HID lamp electronic ballast,a new type of quasi-resonant HID lamp electronic ballast topology is proposed and studied in this paper. Compared with the traditional one,the new quasi-resonant HID lamp electronic ballast simplifies the design. Besides,the new quasi-resonant HID lamp electronic ballast could achieve zero -voltage switching （ ZVS） for switches in every switching cycle. At last,the correctness of theoretical analysis is validated by experimental results.