电气工程学报 ›› 2017, Vol. 12 ›› Issue (11): 35-40.doi: 10.11985/2017.11.006

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基于负载电流微分补偿的单周控制有源电力滤波器

张勇,严洪峰   

  1. 江苏金智科技股份有限公司 南京 211100
  • 收稿日期:2017-08-10 出版日期:2017-11-25 发布日期:2017-11-25
  • 作者简介:张 勇 男 1976年生,硕士,工程师,研究方向为电能质量治理和新能源发电。|严洪峰 男 1991年生,硕士,研究方向为电能质量治理和电机控制。

One-Cycle Controlled Active Power Filter Based onLoad Current Derivative Compensation

Zhang Yong,Yan Hongfeng   

  1. Wiscom System Co.Ltd Nanjing 211100 China
  • Received:2017-08-10 Online:2017-11-25 Published:2017-11-25

摘要:

为了提高电网的电能质量,使用有源电力滤波器(APF)对谐波电流进行补偿是常用方法之一。非线性负载不控整流产生的畸变电流具有很高的变化率。双极性调制的单相全桥拓扑采用传统单周控制方法时,由于APF的补偿电流无法及时变化,导致了电网电流在电流突变时刻存在畸变。本文提出了一种采用负载电流微分补偿的方法,改善了负载电流突变时刻的补偿效果。分析了补偿原理并提出了实现方法,利用Matlab/Simulink进行仿真,并证明了该方案能够明显降低电网电流畸变。

关键词: 有源电力滤波器, 单相全桥变流器, 单周控制, 负载电流微分补偿

Abstract:

To improving the electric power quality, active power filter (APF) is commonly used. The distorted current, which is produced by non-linear load, has a steep change due to uncontrolled current rectification. Implementing classical one-cycle-control scheme, The dual-polarity modulated Single-phase full-bridge is hardly to gain enough current to compensate the distortion current of non-linear load. The load current derivative compensation scheme is proposed to improve the performance of APF. Theatrical analysis and implement schematic are presented. Using Matlab/Simulink, the result of simulation shows that the total harmonic will greatly reduced.

Key words: Active power filter, single-phase full-bridge converter, one cycle control, load current derivative compensation

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