Control strategy of three-phase photovoltaic inverter under low-voltage ride-through condition
type: Item
instance of: scholarly article
title: Control strategy of three-phase photovoltaic inverter under low-voltage ride-through condition
zbMATH Open document ID: 1395.94425
DOI: 10.1155/2015/790584
author: Xianbo Wang
author: Zhixin Yang
author: B. Fan
author: Wei Xu
published in: Mathematical Problems in Engineering
publication date: 2018-08-27T00:00:00Z
review text: Summary: The new energy promoting community has recently witnessed a surge of developments in photovoltaic power generation technologies. To fulfill the grid code requirement of photovoltaic inverter under low-voltage ride-through (LVRT) condition, by utilizing the asymmetry feature of grid voltage, this paper aims to control both restraining negative sequence current and reactive power fluctuation on grid side to maintain balanced output of inverter. Two mathematical inverter models of grid-connected inverter containing LCL grid-side filter under both symmetrical and asymmetric grid are proposed. PR controller method is put forward based on inverter model under asymmetric grid. To ensure the stable operation of the inverter, grid voltage feedforward method is introduced to restrain current shock at the moment of voltage drop. Stable grid-connected operation and LVRT ability at grid drop have been achieved via a combination of rapid positive and negative sequence component extraction of accurate grid voltage synchronizing signals. Simulation and experimental results have verified the superior effectiveness of our proposed control strategy.
Mathematics Subject Classification ID: 94C30
Mathematics Subject Classification ID: 93C95
zbMATH DE Number: 6927223
Wikidata QID: Q59119886
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1155/2015/790584
OpenAlex ID: W2185937618
cites work: Adaptive rotor current control for wind-turbine driven DFIG using resonant controllers in a rotor rotating reference frame
description: scientific article; zbMATH DE number 6927223