三电平三相四线制APF，在abc坐标系下进行电流环的控制，采用无差拍控制策略和载波同相调制方法，能够抑制谐波，补偿无功和治理三相不平衡，matlab2006b,高版本可能需要更换低通滤波器-Three- level three- phase four-wire APF, current loop control in abc coordinates, using deadbeat control strategy and carrier-phase modulation method that can suppress harmonics, reactive power compensation and governance phase unbalance, matlab2006b, high version may need to replace the low-pass filter