Based on the periodicity of active current and the DC-bus voltage variation characteristic with the power flowing between AC source and DC-side capacitor of APF,this paper presents a new linear cycle discrete control method for DC-bus voltage.

• 针对有源滤波器电流谐波分量检测运算复杂,且在负荷电流变化时出现电源电流畸变现象,从直流侧电容电压与交、直流侧功率传递的关系出发,并结合有功电流的周期性特点,提出了基于直流侧电容电压周期离散控制的新型有源滤波器控制方法。