摘要
在分析现有串联和并联有源电力滤波器的基础上,为了能实时有效地补偿电源电流中的谐波分量及其无功分量,提出了一种基于空间矢量脉宽调制(SVPWM)及无差拍算法的并联有源电力滤波器控制方案,即利用无差拍控制实现谐波电流的跟踪算法,使用SVPWM算法跟踪补偿电流参考值;详细阐述了无差拍控制算法的原理,分析了基于SVPWM的补偿电流跟踪控制算法,推导了基于同步旋转dq坐标系的参考电流的状态空间方程及离散化控制方程,给出了基于Matlab/Simulink的有源电力滤波器无差拍控制算法的仿真模型。从仿真波形可以看出,几乎所有的谐波均降到了1%以下,总谐波畸变率仅为1.96%,谐波抑制好。
Based on the analysis of existing serial and parallel APF（Active Power Filter）, a control method of parallel APF based on SVPWM（Space Vector Pulse Width Modulation） and deadbeat algorithm is proposed to compensate harmonic and reactive components of the supplied current. It uses the deadbeat control to realize harmonic current tracking and the SVPWM to follow reference current. The principle of deadbeat control is described and the SVPWM- based tracking control algorithm of compensating current is analyzed,and the state space equation and discrete control equation of compensating current based on the synchronous rotation dq coordinates is derived. Its Matlab/Simulink- based simulation model is given and the simulative results show that,the harmonics are suppressed effectively with all harmonic components below 1 percent and THD equal to 1.96 percent.
出处
《电力自动化设备》
EI
CSCD
北大核心
2008年第9期93-96,共4页
Electric Power Automation Equipment
基金
山东省高等学校实验技术研究项目(鲁教备字[2005]2号)~~
