Predictive Control for Harmonic and Unbalance Compensation using Active Power Filter

Authors:-Venkata Krishna Medah, P Syam Kumar

Abstract:-An active power filter implemented with a four leg voltage-source inverter using dq-based Current Reference Generator scheme is presented. The use of a four-leg voltage-source inverter allows the compensation of current harmonic components, as well as unbalanced current generated by single-phase nonlinear loads.The grid interfacing can thus be utilized as:1)power converter to inject power generated from rest the grid, and 2)shunt APF to current unbalance, load current harmonics and load reactive power demand. The compensation performance of the proposed active power filter and the associated control scheme under steady state and transient operating conditions is demonstrated through simulations results.