摘要
提出了一种基于半桥的两级低频方波HID灯用电子镇流器,详细分析了其工作原理及控制方案。半桥逆变器输出低频方波信号,有效克服了HID灯声谐振现象;电路中电感工作在临界电流模式,降低了开关管损耗,提高了效率。通过对一个35W金卤灯的实验验证了该方案的可行性。
A two-stage low-frequency square-wave electronic ballast for high intensity discharge（HID） lamp based on half-bridge circuit is proposed. The operation and control strategy are analyzed in detail. The converter provides the lamp with low-frequency square-wave current to avoid acoustic resonances. It operates in boundary current mode （BCM）, decreases the switching loss and increases the efficiency dramatically. Its feasibility is verified by an experimental results of 35 W metal halide lamp.
出处
《电气应用》
北大核心
2008年第5期83-86,共4页
Electrotechnical Application
基金
福建省自然科学基金资助项目(E0510008)
关键词
电子镇流器
声谐振
恒功率
electronic ballast acoustic resonance constantpower
