Research on intelligent hybrid injection active power filter

To solve the power supply problem of injection DC side active filter, an intelligent hybrid injection type active power filter are put forward, making use of solar photovoltaic power generation system to provide energy to injection active power filter DC side. It is used to solve the problem of energy source of active filter and improve the power quality of the grid under the premise of green energy. In order to detect the harmonic current and improve their performance, FFT algorithm based on LPF is adoped, using complex control algorithm as current tracking algorithm to the filter. For the purpose, MATLAB is used to establish simulation model and do simulation studies. The main circuit has been designed by TMS320F2812 and verified by experiments on its performance, current waveform distortion rate fell from 24.3%to 2.37% after the compensation. The results show that the filter can effectively compensate for current harmonics.