Boost结构单周期控制的有源功率因数校正电路设计

Design of Boost active power factor correction circuit with one-cycle control

以单相单周期控制Boost结构有源功率因数校正电路为研究对象,分析了有源功率因数校正技术的基本原理,并对其稳定性进行数学分析,同时推导出了单周期控制方程。基于IR1150控制芯片,用简单的电路实现该控制,因无需乘法器和检测输入电压电路,简化了电路。针对300 W实际样机,对整个功率因数校正电路的高频输入电容、Boost电感、Boost输出电容、输出电压分压电阻、过电压保护分压电阻、IR1150的工作频率、检测电阻及其他参数进行设计。对所设计电路进行了仿真,并对样机进行了测试,获得仿真和测试波形及测试数据。仿真结果和测试结果表明,基于单周期控制的有源功率因数校正电路功率因数达到0.99以上,谐波分量低,且电路简单。

The principle of single-phase Boost APFC （Active Power Factor Correction）circuit is studied,its stability is analyzed and its one-cycle control equation is deduced. A simple control circuit based on IC IRll50 is adopted,which has no multiplier and input voltage detection circuit. Its parameters are designed for a 300 W prototype,including high-frequency input capacitor,Boost inductor,Boost output capacitor, output-voltage dividing resistors,over-voltage protection dividing resistors,lRll50 working frequency,detecting resistor,etc. The designed circuit is simulated and the prototype tested. Simulative and testing results show that,the Boost APFC circuit with one-cycle control is low harmonic components. simple ,reaches higher power factor than 0.99 and has