基于单级PFC无频闪无电解电容的LED电源驱动设计  

A Flicker-free Electrolytic Capacitor-less LED Driver Based on Single-stage PFC Converter

作　　者：王克峰[1] 郑杜成 马悦[1] 程红[1] 

机构地区：[1]中国矿业大学(北京)机电信息工程学院,北京100083

出　　处：《电源学报》2016年第3期118-123,共6页Journal of Power Supply

摘　　要：在矿用大功率照明应用中,电解电容将指数级降低驱动电路寿命。通过分析Boost-Flyback不同电压下的不同工作状态及其约束条件,提出基于电压的分段控制策略,建立了不同电压下的动态小信号模型。最后通过仿真验证了此控制策略下单级PFC去除电解电容的可行性。Electrolytic capacitors would make the life of drivers decrease, and so removing the electrolytic capacitors can increase the life of drivers in the application of lighting under the mine. The boost-flyback single-stage power factor correction（PFC） converter works in different ways under different voltages, so different contol strategies can be used with the aim of eliminating electrolytic capacitors and correcting power factor. Simulation results are presented to verify the effectiveness of the improved control scheme.

关 键 词：LED 无频闪 单级PFC变换器 无电解电容 

分 类 号：TM46[电气工程—电器] TM923.34