摘要
针对助航灯检测电路的供电问题,研究了从助航灯调光回路寄生取电的方法。助航灯通过电流改变光强等级,鉴于其工作电流范围大的特点,采用基于电流互感器寄生取电方法。建立了互感器取电模型并结合实验得出互感器输出功率与一次侧电流以及负载的关系。根据检测电路功率要求,优化了互感器一次侧设计参数,并采用基于功率电阻的过压保护电路,限定互感器输出电压。实验证明,在助航灯工作在一级至五级光强等级时,电源输出电压稳定,满足检测电路功率要求。
To solve the problem of the power supply for airfield lights detection circuit, a parasitism power supply method from lighting regulation circuit is studied. The light intensity level is changed by the current. In view of the charac-teristics of current range, a parasitism power supply method based on current transformer is used. The model of current transformer for power supply is created, and the relation between the output power of the current transformer and the primary side current associated with the load is obtained combined with the experiments. According to the power requirements of the detecting circuit, the primary side designing parameters of the current transformer is optimized, and the output voltage of the transformer is limited by using an over-voltage protection circuit based on power resistors. It is proved by the experiments that the output voltage of the power supply is stable when the airfield lights is working at light intensity level one to five, which meets the power requirement of the detection circuit.
出处
《通信电源技术》
2013年第1期23-26,共4页
Telecom Power Technology
基金
中央高校基本科研业务费(ZXH2011D012)
关键词
助航灯光
电流互感器
寄生电源
调光回路
airfield lighting
current transformer
parasitism power supply
lighting regulation circuit
