Design of novel active power filter based on voltage controlling

The harmonic component in city power grids has considerably increased since more and more nonlinear power loads turn up in the grids. In order to suppress harmonics effectively and thus to reduce the damage it brings about to the power system,the design of a novel active power filter(APF) different from traditional ones is put forward,and the new single-phase harmonic-suppressing device with small power was designed.With more functions and better performance,the device overcomes defects of traditional APF and performs well in harmonic suppressing.