一种两级低频方波金卤灯电子镇流器的新型控制方法  

New Control Strategy for a Two-stage Low-frequency Square-wave Electronic Ballast for MHD Lamp

作　　者：许建炳[1] 钱照明[1] 

机构地区：[1]浙江大学,浙江杭州310027

出　　处：《电源技术应用》2006年第3期30-33,共4页Power Supply Technologles and Applications

摘　　要：提出了一种两级无声谐振金卤灯电子镇流器的新型控制方法。镇流器包括功率因数校正、一个带降压功能的半桥逆变电路和点火电路。这种新型的控制方法使灯工作于400Hz的低频方波工作状态,保证不出现声谐振的发生。还提出了一种新颖且简单的方法,克服了逆变电路换向瞬间的电流过冲问题,降低了灯工作电流的波峰系数。70W金卤灯电子镇流器的样机验证了这种控制方法的可行性。A novel control strategy for a two-stage acoustic resonance free electronic ballast for high intensity discharge （HID） lamp is presented. The ballast consists of a PFC stage, a low frequency half-bridge inverter with buck capability, and an igniter. A new control method proposed to control the half bridge inverter to supply the lamp with low square wave current. A novel and simple method is proposed to conquer overshoot problem during output current inverting instant. The proposed control method is verified with experimental results.

关 键 词：金卤灯电子镇流器 低频逆变 恒流源 电流过冲 

分 类 号：TM46[电气工程—电器]