Effective and Simple Control of Grid-Connected Three-Phase Converter Operating at a Strongly Distorted Voltage

Adam Milczarek , Kamil Możdżyński , Mariusz Malinowski , Sebastian Styński

Abstract

Three-phase power electronics converters (PECs) are commonly used as an interconnection of DC loads/sources with the electrical AC power system. Their important goal is to ensure three-phase symmetrical and pure sinusoidal grid current waveforms. Unfortunately, frequent adverse of grid voltage conditions like the occurrence of higher order harmonics and dips/sags leads to problems in maintaining high-quality parameters of current and stable operation of PEC. Therefore, a more complex control algorithms are usually used to solve those problems. In this paper, effective and simple control is proposed to mitigate grid current distortions caused by grid-voltage harmonics. This improvement of current quality can be easily obtained in control of grid-connected PEC using only band notch filtered grid voltage as a feedforward without any additional control loops parallel connected to linear current controllers (tuned to fundamental frequency). Theoretical analysis with simulation and experimental investigations are presented, which prove very good properties and advantages of the proposed control idea.

Author Adam Milczarek (FoEE / ICIE)
Adam Milczarek,,
- The Institute of Control and Industrial Electronics
, Kamil Możdżyński (FoEE / ICIE)
Kamil Możdżyński,,
- The Institute of Control and Industrial Electronics
, Mariusz Malinowski (FoEE / ICIE)
Mariusz Malinowski,,
- The Institute of Control and Industrial Electronics
, Sebastian Styński (FoEE / ICIE)
Sebastian Styński,,
- The Institute of Control and Industrial Electronics
Journal seriesIEEE Access, ISSN 2169-3536
Issue year2020
Vol8
Pages12307-12315
Publication size in sheets0.5
Keywords in EnglishCurrent harmonics mitigation, DC-AC power conversion, grid distortions, harmonic distortion, voltage control
ASJC Classification1700 General Computer Science; 2200 General Engineering; 2500 General Materials Science
DOIDOI:10.1109/ACCESS.2020.2965727
Languageen angielski
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 17-07-2020, ArticleFromJournal
Publication indicators Scopus Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.718; WoS Impact Factor: 2018 = 4.098 (2) - 2018=4.54 (5)
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