Open loop and closed loop spectral frequency active filtering

被引:55
作者
Mariethoz, S [1 ]
Rufer, AC [1 ]
机构
[1] Swiss Fed Inst Technol, Lab Ind Elect, CH-1015 Lausanne, Switzerland
关键词
active power filtering; closed loop; FFT;
D O I
10.1109/TPEL.2002.800973
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper proposes two frequency based methods for parallel active filtering of current harmonics in utility grids. Active filter (AF) reference prediction and AF current control are the two key-points to obtain high performances. This paper deals with the AF reference prediction. The two proposed methods are based on the Fourier Series and its implementation on DSP. They belong to two prediction structures: 1) the open-loop structure which predicts the reference currents from the load currents; 2) the closed-loop structure which predicts the reference currents from the grid currents. Fourier Series based methods are very flexible and have several interesting properties. These two methods have been successfully implemented and tested. The latter method cancels permanent errors and results in better performances. Both methods are very flexible.
引用
收藏
页码:564 / 573
页数:10
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