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In this article reduced switch count-based distributed static compensator (DSTATCOM) is presented. DSTATCOM is a reduced switch count-based multilevel inverter (MLI)-based DSTATCOM that is used to eliminate harmonics in the source current caused by a non-linear load. The reference current estimation is carried out with a sliding mode controller (SMC) based synchronous reference frame (SRF). The estimation of the harmonics real power and reactive power components is used for the subsequent calculation of desired currents of the DSTATCOM. In addition to this, DSTATCOM performance was also tested with an artificial neural fuzzy inference system-based control scheme. The training data is obtained from SMC-based SRF control schemes. The DSTATCOM is modeled with MATLAB/Simulink using Simpower system block sets. The simulation study of DSTATCOM with different control schemes is carried out to examine its harmonics elimination capabilities using MATLAB. The simulation results of the various DSTATCOM control method demonstrate the reduced harmonics current caused by the load. The ANFIS-SRF exhibits better compensation characteristics than the SMC-SRF scheme. The simulated results of DSTATCOM with an ANFIS-SRF scheme give reduced ripple content in the DC side voltage of the capacitor.

This paper presents an efficient and reliable Genetic Algorithm based solution for Selective Harmonic Elimination (SHE) switching pattern. This method eliminates considerable amount of lower order line voltage harmonics in Pulse Width Modulation (PWM) inverter. Determination of pulse pattern for the elimination of some lower order harmonics of a PWM inverter necessitates solving a system of nonlinear transcendental equations. Genetic Algorithm is used to solve nonlinear transcendental equations for PWM-SHE. Many methods are available to eliminate the higher order harmonics and it can be easily removed. But the greatest challenge is to eliminate the lower order harmonics and this is successfully achieved using Genetic Algorithm without using Dual transformer. Simulations using MATLABTM and Powersim with experimental results are carried out to validate the solution. The experimental results show that the harmonics up to 13th were totally eliminated.