基于电压信号的快速谐波提取电路设计

近年来,随着电力电子器件技术的发展,电力电子设备得到了广泛的应用,但电力电子器件导致的谐波含量对电网的污染也越来越重。对电网的安全稳定运行造成了很大的隐患。目前有源电力滤波器(APF)技术的应用为谐波抑制提供了一种非常有效的方法,但实际工作时普遍采用DSP作为核心控制器件的方法存在着锁相不准确、输出时序不同步等问题。提出了一种基于电压信号进行补偿的方法,有效解决了锁相、不同步等问题。

Circuit Design of Rapid Harmonic Extract Based on Voltage

Recently with the development of power electronic devices,power electronic equipments are applied widely.But the pollution caused by harmonic is more serious to power grid,which endangers the stable running of power grid.At present,the application of APF provides an effective method for harmonic suppression,but the widespread adopted method of using DSP as core component in practical has such problems as inaccurate phase lock,output sequence out of sync,etc..Puts forward a new method of compensation on the basis of voltage which solves the problems effectively.