Low voltage ride through control strategy for grid-tied solar photovoltaic inverter

Author:

Daravath Ramesh1ORCID,Sandepudi Srinivasa Rao1ORCID

Affiliation:

1. Department of Electrical Engineering , National Institute of Technology , Warangal , 506004 , Telangana , India

Abstract

Abstract This paper presents a low voltage ride through (LVRT) control strategy using an active power oscillations based reference current generation approach for grid tied solar photo voltaic (SPV) system under line-to-ground (LG) and double line-to-ground (LLG) faults. Proposed control strategy minimizes the harmonics injected into the grid, as well as oscillations in injected reactive power and DC-link voltage. Further this control strategy provides a dynamic control of active and reactive powers, the flow of sinusoidal currents into the grid, and avoids the disconnection between the utility grid and SPV system during faults. A proportional resonant (PR) current controller is developed in a stationary reference frame to achieve the power quality by fulfilling the grid codes. Simulation and experimental results are presented to highlight the merits of the proposed control scheme.

Publisher

Walter de Gruyter GmbH

Subject

Energy Engineering and Power Technology

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