From sampling, calculation time delay, control object zero-order discretization, digitalization process influence to Active Power Filter is analyzed in this paper.
从采样，计算延时，控制对象的零阶保持离散化等方面分析了数字化过程对有源电力滤波器性能的影响。
In order to overcome the disadvantage of the single phase passing zero control in the reactive power compensation device, fuzzy control is put forward in this paper.
针对目前无功补偿装置中采用的单相过零投切方法存在的缺点，本文提出采用模糊控制的方法。
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