在并联型有源滤波器的控制过程中，前馈控制能够快速跟踪负荷波动，但需要精确的模型和参数。
For the control of shunt APF (Active Power Filter), feedforward is an effective way to track the load variation, but accurate models and parameters are demanded.
本文提出了一种单相有源电力滤波器谐波和无功电流检测的新方法—负荷电流基波有功分量法。
This paper presents a novel detecting method for harmonics and reactive current in single-phase active power filter based on calculation of the real part of the fundamental load current.
本文分析了电力有源滤波器的原理和组成结构，详细分析了检测负荷电流式、检测系统电流式、 复合控制式三种控制模式；
This paper made detail study on the theory and structure of the APF and the three control methods: detecting load current method, detecting system current method and complex control method.
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