Abstrait

PI Controller Based Shunt Active Power Filter with Cascaded Multilevel Inverter

A.Arulkumar, Dr.N.RathinaPrabha, M.KalaRathi

Instantaneous active and reactive power (p–q) control strategy is used for extracting the threephase reference currents for shunt active filters;However, in the proposed approach only calculation of real power losses are considered for extracting the three-phase reference currents for shunt active filters, evaluating their performance using a three phase, five level cascaded multilevel VSI based active filter with PI Controller in MATLAB/Simulink environment. The Real Power Theory control strategy is able to yield an adequate solution when source voltages are distorted and/or unbalanced sinusoidal. Extensive simulations are carried out with PI controller for Real Power Theory control strategy under transient and steady state conditions and adequate results are presented with different nonlinear loads.