基于PEBB的并联有源电力滤波器在立辊轧机中应用

有源电力滤波器是一种用于动态抑制谐波、补偿无功功率的新型电力电子装置。基于电子组块PEBB(PowerElectronicBuildingBlock)的有源电力滤波器的控制系统主要由谐波检测电路和补偿电流发生电路组成,其基本原理是由谐波检测电路检测出被补偿对象的谐波电流,然后经过补偿电流发生电路采用滞环比较方法控制补偿电流的变化,最后得到期望的电源电流。该装置采用比例积分(PI)控制器使直流侧电容电压维持在要求的水平。该装置通过现场的智能仪表和系统管理软件可以对电能质量进行监视与校正,在立辊轧机上的实验运行取得了良好的效果。

Application of PEBB-based shunt active power filter in rolling mill

APF(Active Power Filter) is a kind of electric power equipment for dynamic harmonic suppre-ssion and var compensation.The APF control system based on PEBB(Power Electronic Building Block) is composed mainly of harmonic detection circuit and compensation current generation circuit,which detects the harmonic current by the harmonic detection circuit and controls the change of compensation current by the compensation current generation circuit applying stagnant loop comparison method to obtain the expected source current.The PI(Proportional-Integral) controller is used to maintain the required capacitive voltage at the DC side.With field intelligent instrument and system management software,the system can be used to monitor and adjust the power quality.It runs well in experimental operation. This project is supported by the National Natural Science Foundation of China(60074032).