Abstract:
Population of world is going to be inclined rapidly, in 2030 it is estimated that population of our country will increase to 234,432,000 which is alarming for us. With the increase in the population the demand of power also increases. These days Pakistan is facing huge shortfall in power sector. It is estimated that there is a shortfall of 5,000 MW and 6,000 MW in Pakistan. To meet demands of population new power generation plants are required, but installation of such huge power plant may require time and money. The best solution of this problem is to make a shift from convention power generations methods to renewable power generation methods e.g. wind turbine, PV systems tidal and etc. But integration of this sort of energy sources with central grid is not an easy task, Total harmonic distortion (THD) may be introduce in our signal during integration. Total harmonic distortion (THD) are injurious for our electronic devices, it may burn then or ruin the performance of our electronic devices.
THD are also introduced in our signal because of nonlinear load. These nonlinear devices produce a harmonic in the system which in turn pollutes the system, creates losses and harm the equipment’s. To avoid these sorts of issues, there should be reliable and stable system so that harmonics can be avoided and pure sinusoidal waveform can be generated which is vigorous for the system and it does not alter the reliability and system and performance. In the recommended topology (HSAF) hybrid series active filter can be used to make our waveform pure sinusoidal and crop harmonics from waveform. Using discrete Fourier transforms (DFT) and inverse Fourier transform to eliminate harmonics and to control the (HSAF) hybrid series active filter, PI controller is used.
Simulation of HSAF is made on MATLAB a nonlinear load is also inserted to introduce harmonics in the waveform, PI controller is used in this simulation which is controlled by discrete Fourier transforms (DFT) and inverse Fourier transform. PI controller controls the switching of active power filter owing to which harmonics get eliminated. Results are discussed and compared with IEEE standards.