为了解决单周控制的三相有源电力滤波器的不足,本文将基于瞬时无功功率理论的ip-iq谐波检测法和单周控制相结合,以基波电流作为控制参考,运用于三相三线制有源电力滤波器中,并建立控制方程和控制电路。通过仿真验证了在电网电压存在畸变时,有源电力滤波器的补偿效果良好,且可以根据对谐波和无功电流灵活补偿。方案还可以运用到三桥臂三相四线制有源电力滤波器中。 In order to solve the problem of three-phase active power filter with one-cycle control, this paper combines the ip-iq harmonic detection method based on instantaneous reactive power theory with one-cycle control, taking the fundamental current as control reference, Phase three-wire active power filter, and the establishment of control equations and control circuits. Simulation shows that the compensation of the active power filter is good when there is distortion in the grid voltage and it can be flexibly compensated based on the harmonic and reactive current. Program can also be applied to the three-legged three-phase four-wire active power filter.