Publication

Abstract : Harmonic contents present in power network have adversely affected the power quality and this reduces the stability of the system. In this paper, active filter-based compensation has been developed using the PV source. A nonlinear BLDC load is considered which injects more harmonic current in the system whereby increasing the total harmonic distortions THD. This THD value needs to be maintained below the permissible limit by properly controlling the shunt active power filter SAPF to get effective compensation. In this work, synchronous reference frame SRF theory is used to produce the compensating current required for canceling the harmonic content produced by the BLDC load and for compensating the reactive power. The energy to active filter is obtained from PV array and the intermediate DC-to-DC converter stage is used to smoothen the operation of BLDC motor drive. The complete system is modeled and simulated in MATLAB Simulink. From the simulation analysis, it shows that the reduction of THD (%) is within the limits and VAR compensation is achieved thereby improving the power factor.