10kW三电平有源功率因数校正的控制方法

A control method for 10kW three-level active power factor correction

本文介绍三电平有源功率因数校正的关键控制方法。首先,给出基于正弦脉冲宽度调制(SPWM)的三电平有源功率因数校正的控制原理,介绍电流环路和电压环路的设计过程。然后,为了让PI调节更精确,给出一种占空比前馈的控制方法。最后,介绍这些控制方法在数字信号处理器(DSP)中的实现过程。本文推荐的有源功率因数校正的控制方法简单可靠,实验结果验证了其有效性。

The key control methods of three-level active power factor correction(APFC)are introduced.Firstly,the control block principle of three-level APFC based on sinusoidal pulse width modulation(SPWM)is given.The design process of current loop and voltage loop is introduced.Then,in order to achieve more accurate proportion integral(PI)regulation,a duty feed-forward control method is presented.Finally,the realization process of these control methods in digtal signal processor(DSP)is introduced.Here,the APFC control method recommended in this paper is simple and reliable,and the experimental results verify its validity.