摘要
采用Sepic变换器作为功率因数校正的主电路,实现断续状态下的功率因数校正。针对变换器随着负载的增大的输入电流畸变严重和输出电压降低、损耗大的缺点,提出了带有源浮充平台的Sepic型功率因数校正变换器方案,并详细阐述了工作原理和控制方法。在此基础上,结合单周控制技术和控制方法的原理,提出了一种新型功率因数校正AC/DC开关变换器电路,利用Saber软件对其进行仿真。仿真结果表明,不仅较好地实现了功率因数校正,且使输出电压可调性更加灵活,输出功率进一步提高,应用场合更宽。
A Sepic converter was used as the main circuit,it could comply the function of power factor correc-tion（PFC） when the circuit operated in DCM.According to disadvantages of input current distortion and loss in-crease of single-phase current discontinuous mode in Sepic power factor correction converter,a novel switching con-verter with an active floating charge landing was introduced and its operating principle and control method were ex-pounded.Also through analysis and discussion,as well as combining control method principle of one-cycle control technology,a new type of AC/DC switching converter circuit for PFC was presented,and it was simulated by Saber software.The simulation results showed that it not only achieved better power factor correction,but allowed more flexible adjustable output voltage,output power further enhanced and wider applications.
出处
《低压电器》
北大核心
2011年第2期43-46,49,共5页
Low Voltage Apparatus
关键词
功率因数校正
SEPIC变换器
有源浮充平台
单周期控制
power factor correction（PFC）
Sepic converter
active floating charge landing（AFCL）
one-cycle control
