提出一种用于高气压金属卤化物气体放电灯供电电源的新型主电路拓扑．不需设置专门提供起燃脉冲的高压脉冲发生器，只须改变电路工作频率，即能满足这类灯在起燃、负阻运行、稳态运行各阶段对电源不同输出特性的要求．电路结构简单，装置体积小．在负载稳定运行后，电源输出特性近似电流源，开关器件电流幅值较低，并可实现零电流换相．讨论了这种电源的工作原理和系统结构，并给出了模拟负载的PSPICE仿真和实验室试验结果，表明其完全符合电路的工作原理和设计思想．%A new circuit topology of power supply for high-pressure metal halide discharge lamp is proposed. Without a high voltage pulse generator for firing the lamp, the supply can apply voltage in three different modes for the lamp operation from firing to steady state through modulation of the switch operation frequency. The supply circuit scheme is simplified and its volume can be also reduced. The switches in propsed supply can operate in lower current amplitude, nearly current source and ZCS mode. The principle of the supply and its scheme were described. Some simulation and experiment results for modeling load were given as well.
展开▼
