Evaluation of repetitive control for power quality improvement of distributed generation

J. Liang*, T. C. Green, G. Weiss, Q. C. Zhong

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

Small-scale distributed generation (DG) is often not a natural 50 or 60 Hz AC source and so employs an inverter for the interface to the utility grid. Here, repetitive control is examined as a means of also using a DG inverter to improve the distortion of a local grid where a large proportion of the load is non-linear. The proposed controller can offer better waveform quality in balanced and unbalanced conditions than PI controllers in either stationary or rotating reference frames. The inverter also requires a control loop to regulate the exported power. A decoupled P and Q controller is applied and compared to a traditional amplitude and angle controller. The controllers are tested for disturbance rejection of variations in grid voltage, DC-link voltage and load power.

Original languageEnglish
Pages (from-to)1803-1808
Number of pages6
JournalPESC Record - IEEE Annual Power Electronics Specialists Conference
Volume4
StatePublished - 2002
Externally publishedYes
Event2002 IEEE 33rd Annual Power Electronics Specialists Conference (PESC) - Cairns, Australia
Duration: 23 Jun 200227 Jun 2002

Keywords

  • Distributed generation
  • Grid connection
  • Inverter
  • Power control
  • Repetitive control

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