Title: Improvement of power quality in microgrids using predictive controller

Authors: Prajith Prabhakar; H. Vennila

Addresses: Electrical and Electronics Department, Noorul Islam University, Tamilnadu, 629180, India ' Electrical and Electronics Department, Noorul Islam University, Tamilnadu, 629180, India

Abstract: Microgrid is a low voltage grid which is subjected to disturbances. The distributed energy resources are connected to the LV bus by means of power electronic converters. The power quality issues are analysed with model predictive control (MPC) algorithm in both - grid connected and islanded modes. But the islanded mode is analysed separately. A new model is suggested for the islanded mode with non- linear loads. Predictive control based distribution static compensator (DSTATCOM) injects voltages at the point of common coupling (PCC) in the microgrid. Reactive power compensation and mitigation of harmonics are done with the help of new proposed model. The principles and the proposed algorithm are verified by Matlab/Simulink simulation. Simulation results suggest that this control method can decrease the power quality issues and increase the microgrid stability.

Keywords: power quality; active power control; microgrid; predictive control; distribution static compensator; DSTATCOM.

DOI: 10.1504/IJISTA.2018.091591

International Journal of Intelligent Systems Technologies and Applications, 2018 Vol.17 No.1/2, pp.109 - 122

Received: 27 Mar 2017
Accepted: 08 May 2017

Published online: 03 May 2018 *

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