Harmonic mitigation technique for DSTATCOM using continuous time LMS adaptive filter

Abstract

This paper propose an adaptive filter based on continuous time LMS for the distribution static compensator. The Simulink model is constructed in MATLAB software of the complete system along with adaptive control algorithm and rectifier type nonlinear load. It is seen from the test results that the presented LMS adaptive filters accurately estimate the active component weight of the currents from the given nonlinear currents. These weight components are utilized to produce reference currents and subsequently switching pulses for the voltage source converter of the compensator are generated. This three-phase with four-wire DSTATCOM system provides necessary compensation in terms of harmonic current, reactive power and neutral current as well.