Paper Info
Title
Multi-Functional PV Inverter With Low Voltage Ride-Through and Constant Power Output
Abstract
Renewable photovoltaic (PV) energy is a primary contributor to sustainable power generation in microgrids. However, PV grid-tied generators remain functional as long as the grid voltage and the input PV source remain normal. Abnormal conditions like transient grid sags or solar irradiation flickering can make the grid-tied inverter go offline. Simultaneous shut down of PV generators residing in the distribution grid may lead to an overall grid instability or outage. Therefore, PV generators must be equipped with fault-ride-through mechanisms in order to remain connected and operational during faults. This paper presents a PV-inverter with low-voltage-ride-through (LVRT) and low-irradiation (LR) compensation to avoid grid flickers. The single-phase inverter rides through the voltage sags while injecting reactive power into the grid. The proposed control strategy ensures a steady DC-link voltage and remains connected to the grid during AC-side low voltage and DC-side low-irradiation faults. Unlike other PV inverters, the controller maintains the maximum-power-point-tracking (MPPT) in all conditions. LVRT, constant power output, and robust MPPT are the noticeable features of the proposed system. Frequency analysis, simulations, and a laboratory prototype validate the proposed control strategy.
Year
DOI
Venue
2022
10.1109/ACCESS.2022.3158983
IEEE ACCESS
Keywords
DocType
Volume
Inverters, Power system stability, Generators, Stability analysis, Radiation effects, Power quality, Microgrids, Microgrid, PV inverter, LVRT, constant power output, MPPT
Journal
10
ISSN
Citations 
PageRank 
2169-3536
0
0.34
References 
Authors
0
6
Name
Order
Citations
PageRank
Muhammad Talha100.34
Siti Rohani Sheikh Raihan200.34
Rahim, N.A.301.35
Muhammad Naveed Akhtar400.34
Osama M. Butt500.34
Muhammad Majid Hussain600.34