Enhancement of Power Quality in Power Grid System using Dual Voltage Source Inverter
A.S.F. Subhamathi1, G. Sakthi Priya2, S. Banumathi3 

1A.S.F. Subhamathi, Department of Electrical &Electronics Engg, M.Kumarasamy College of Engineering, Karur, India
2G. Sakthi Priya, Department of Electrical &Electronics Engg, Velammal college of Engg & Tech, Madurai, India
3S. Banumathi, Department of Electrical &Electronics Engg, M.Kumarasamy College of Engineering, Karur, India

Manuscript received on 11 March 2019 | Revised Manuscript received on 16 March 2019 | Manuscript published on 30 July 2019 | PP: 827-832 | Volume-8 Issue-2, July 2019 | Retrieval Number: A1890058119/19©BEIESP | DOI: 10.35940/ijrte.A1890.078219
Open Access | Ethics and Policies | Cite | Mendeley | Indexing and Abstracting
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: In power grid system power quality improvement plays an important role. Dual Voltage Source Inverter (DVSI) scheme is proposed to improve the aspects of Power and consistency of the micro grid system. Here we use Distributed Energy Resources (DER) for power exchange and unbalanced load compensation and nonlinear load in the system. Load sharing and power injections are done by grid interactive inverters in micro-grid. Based on Instantaneous Symmetrical Component Theory (ISCT), control algorithm is developed. For extraction of positive sequence voltage, dq0 transformation is done. An inverter connected to a 3- phase four- wire distribution combination is employed to test the managing strategy of the system. In this work we mainly focused on the assessment of overall performance of Proportional Integral (PI) controller and Fuzzy Logic Controller (FLC). Thus, the FLC provides increase in reliability, better performance of micro grid, less bandwidth requirements of inverters when compared to PI controller. The proposed system is validated by MATLAB simulation methods using PI controller and Fuzzy Logic Controller.
Keywords: Dual Voltage Source Inverter (DVSI)-Distributed Energy Resource (DER)-Instantaneous Symmetrical Component Theory (ISCT). Proportional Integral (PI) Fuzzy Logic Controller (FLC).

Scope of the Article: Fuzzy Logic