A New Control Method for Single-Phase Grid-Connected Inverter Using Instantaneous Power Theory

Document Type : Research paper

Authors

1 Faculty of Electrical and Computer Engineering, University of Birjand

2 Faculty of Engineering, Ferdowsi University of Mashhad

Abstract

Because of installation for local consumers and since it is free of all contaminations, connecting photovoltaic cells to the grid via single-phase inverter is significantly on the rise. In this paper, a new simple current control is proposed for a single-phase grid-connected voltage source inverter. Using the PQ theory and modelling a single-phase system as an unbalanced three-phase system, a method is provided for reference current generation. In the proposed method, it is not necessary to generate a fictitious phase for the current signal. Also, the removal of adjusting filter parameters which were used to generate fictitious current signal increases the simplicity of the control system and reduces computational efforts, especially in the presence of distortion in the current. The simulation results confirm that the proposed method provides a precise and fast current control with minimum harmonic distortions.

Keywords

Main Subjects

References

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Journal of Operation and Automation in Power Engineering
Volume 5, Issue 2
December 2017
Pages 105-116

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History

  • Receive Date: 27 July 2016
  • Revise Date: 29 November 2016
  • Accept Date: 20 December 2017
  • First Publish Date: 20 December 2017

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