中文说明：
单位功率因数矫正器(UPQC)由一系列的主动功率滤波器组成，可以调节分布式能源系统中的功率因数，该算法采用神经网络方法，实现功率因数的调节。
English Description：
Unit power factor corrector (UPQC) is composed of a series of active power filters, which can adjust the power factor of distributed energy system. The algorithm uses neural network method to realize the power factor adjustment.