• ¹SNEHA JEWARGI

Abstract: The main aim of this paper presents function of compensation of micro grid voltage and current harmonics by employing coordinated control of dual interfacing converters. The developing installation of distributed generation (DG) units in low voltage distribution systems has popularized the concept of nonlinear load harmonic current compensation using multi-functional DG interfacing converters. A new simultaneous supply voltage and grid current harmonic compensation strategy is proposed using coordinated control of two shunt interfacing converters. By using this proposed controller in distribution systems, there will be sudden increase or decreases in the load similar to nonlinear load. The load draws non-sinusoidal currents from the AC mains and these causes the load harmonics, reactive power, and excessive neutral currents that pollute power systems. Most of the power quality issues are created by nonlinear characteristics and fast switching of power electronic devices. A single distribution generation interfacing converters are generally used for harmonic compensation in DG but this may cause amplification of supply voltage harmonics when the system is connected to a sensitive load. In this paper we proposed a compensation strategy in which to shunt interfacing converters are used, first one for voltage harmonic suppression and the second one for current harmonic suppression that resulted due to the interaction between the first interfacing converter and the local nonlinear load. To realize a simple control of parallel converters, microgrid voltage and current harmonics compensation using coordinated control of dual-interfacing-converters is assessed using MATLAB/SIMULINK (MLS) with the Sim Power System block set and the results of simulations are presented to evaluate the behavior and feasibility of the proposed topology. Simulated and experimental outcomes are captured to validate the performance of the proposed topology and the control strategy.

Index Terms—Parallel Converters; Active Power Filter; Dynamic Voltage Restorer; LCL filter; Resonance; Power Quality; Harmonic Detection; Phase-Locked Loop.

"MICROGRID VOLTAGE AND CURRENT HARMONICS COMPENSATION USING COORDINATED CONTROL OF DUAL-INTERFACING-CONVERTERS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.42-50, July-2018, Available :http://www.jetir.org/papers/JETIR1807476.pdf

"MICROGRID VOLTAGE AND CURRENT HARMONICS COMPENSATION USING COORDINATED CONTROL OF DUAL-INTERFACING-CONVERTERS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp42-50, July-2018, Available at : http://www.jetir.org/papers/JETIR1807476.pdf