A New Efficient Approach for Melioration of Power Quality in Grid Interfacing with PV/Battery Hybrid System
Journal Title: International Journal of Science Engineering and Advance Technology - Year 2014, Vol 2, Issue 10
Abstract
This paper proposes grid integration of solar (PV)/Battery hybrid energy conversion system with (i) multi-functional features of micro grid-side bidirectional voltage source converter (μG-VSC) (ii) tight voltage regulation capability of battery converter (iii) MPPT tracking performance of high gain integrated cascaded boost (HGICB) dc-dc Converter with quadratic gain and less current ripple. The PV side HGICB Converter is controlled by P&O MPPT algorithm to extract the maximum power from the variable solar irradiation. This paper proposes a modified Instantaneous symmetrical components theory to the μG-VSC in micro-grid applications with following intelligent functionalities (a) to feed the generated active power i n proportional to irradiation levels into the grid (b) compensation of the reactive power, (c) load balancing and (d) mitigation of current harmonics generated by nonlinear loads, if any, at the point of common coupling (PCC), thus enabling the grid to supply only sinusoidal current at unity power factor. The battery energy storage system (BESS) is regulated to balance the power between PV generation and utility grid. A new control algorithm is also proposed in this paper for the battery converter with tight DC link voltage regulation capability. The dynamic performance of battery converter is investigated and compared with conventional average current mode control (ACMC). The effectiveness of the proposed control strategies for HGICB converter and μG-VSC with battery energy conversion system are verified through MATLAB/SIMULINK results.
Authors and Affiliations
VAIBHAV KUMAR VEMULA| PG scholar, Dept of EEE Balaji institute of Technology & Science, JNTUH, Warangal, Telangana, India, MALLIKARJUN REDDY S| Associate professor, HOD, Dept of EEE Balaji Institute of Technolgy & Science, JNTUH, Warangal, Telangana, India
Keywords
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- EP ID EP16336
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