单周期控制的无桥APFC电路仿真研究

摘要

In order to achieve the purpose of power factor correction (PFC),one cycle control method is used to control the switch tube of the switch converter to make AC input current waveform track AC input voltage waveform,thereby the alternating current waveform is realized to be sine. Matlab software is used to simulate the designed circuit,the experimental results show that one cycle controlled bridgeless power factor correction circuit has good correction effect,and the circuit has the advantages of less switching device,low power consumption,small volume and simple control circuit.%为达到功率因数校正(PFC)的目的；采用单周期的控制方法，来控制开关变换器的开关管使交流输入电流波形跟踪交流输入电压波形，从而实现交流电流波形正弦化。应用Matlab软件对设计的电路进行仿真实验，实验结果表明单周期控制的无桥功率因数校正电路具有很好的校正效果，而且该电路具有开关器件少，功耗低，电路体积小和控制电路简单的优点。