【摘要】 本文针对高压钠灯电子镇流器设计中 ,开关损耗大、驱动复杂、启动速度慢等问题 ,提出一种高性能高压钠灯用电子镇流器电路。该电路成功的应用了L6 5 6 0校正芯片和IR2 15 5专用半桥驱动芯片 ,即简化了传统的驱动电路 ,又实现了变频调节 ,提高了启动速度 ,保证了灯功率的稳定。通过频率和辅助元件的设置 ,半桥逆变电路可工作在软开关状态。同时设计出可靠的、能产生 3.5kV电压的启动电路 ,保证灯在热灯熄灭时 ,切断触发脉冲 ,而后自动恢复启动状态。实验结果表明该镇流器性能优良 ,功率因数大于 0 .99,启动时间小于 2 .4min。更多还原

【Abstract】 This paper presents an electronic ballast for high pressure sodium (HPS) lamp, which successfully uses a power factor correction chip L6560 and a half bridge driver IC IR2155. The ballast features simple circuit topology, soft switching modes, unity power factor, constant lamp power, and short start time by adjusting the inverter operation frequency. The 3.5 kV ignition pulse generated by ignitor is ample for the ignition of the lamp in both cold and hot state. Experimental results show that the ballast has good performance with PF (power factor) >0.99 and T \-s(start time)<2.4min.更多还原