基于绝对值电路的有源电力滤波器前端采样设计

Research on the Application of Two Different Sampling Circuits in the Active Power Filter

针对微处理器只能处理单极性电信号的特点,结合有源电力滤波器前端采样电路的设计,本文提出一种绝对值采样电路设计方案,并对比基于绝对值电路采样的设计方案与基于直流偏置采样的设计方案的处理精度,在进行信号完整性分析和仿真研究后,发现基于绝对值电路采样设计方案设计出的采样电路具有较高电流采样精度。

This paper presents a design scheme of the absolute value of the sampling circuit, and compared the design scheme based on absolute value circuit sampling and the processing precision of the design scheme based on DC bias sampling .After done the signal integrity analysis and simulation research, found that based on the absolute value of sampling circuit sampling design is designed with high accuracy.