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Pseudo-Random Sequences in DQ-Domain Analysis of Feedforward Control in Grid-Connected Inverters

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Details

Original languageEnglish
Title of host publication17th IFAC Symposium on System Identification SYSID 2015 – Beijing, China, 19–21 October 2015
Pages1301-1306
Number of pages6
DOIs
Publication statusPublished - 2015
Publication typeA4 Article in a conference publication
EventIFAC SYMPOSIUM ON SYSTEM IDENTIFICATION -
Duration: 1 Jan 1900 → …

Publication series

NameIFAC-PapersOnLine
Number28
Volume48
ISSN (Print)2405-8963

Conference

ConferenceIFAC SYMPOSIUM ON SYSTEM IDENTIFICATION
Period1/01/00 → …

Abstract

Grid-parallel inverters are typically used to connect renewable energy sources to a power grid. The impedance mismatch between the grid and the interfacing circuit can generate harmonic resonances which may lead to reduced power quality. The impedance mismatch can be mitigated by applying an inverter that employs feedforward control. This paper presents a novel DQ-domain technique, based on pseudo-random sequences, for acquiring the impedance information and verifying the effectiveness of the feedforward control. The results can be used for tuning the feedforward control and as a method to perform fast on-line stability analysis of grid-connected systems in the DQ domain.

ASJC Scopus subject areas

Keywords

  • Feedforward control, Fourier analysis, Frequency-response methods, Inverters, Signal analysis

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