An Adaptive Load Voltage Support Control Strategy for Inverter-based Renewable Energy Conversion System

Document Type : Research paper

Authors

1 Department of Electrical Engineering, Islamic Azad University, East Tehran Branch, Tehran, Iran.

2 Faculty of Engineering and Technology, University of Mazandaran (UMZ), Babolsar, Iran .

Abstract

In this paper, an adaptive control strategy is proposed for the inverters of renewable energy source (RES) to simultaneously control the load voltage, grid current and the amount of instantaneous injected power to the grid in the presence of grid voltage distortions and nonlinearity of load current. In the proposed control strategy, the power quality of the local load can be settled based on the operator command. In order to implement the proposed control strategy, a cascaded framework of power, voltage and current control has been introduced. An efficient and fast response controller is introduced for the voltage loop, aiming to compensate of harmonics without any complex calculations. The proposed cascade framework is simulated with nonlinear load and non-ideal grid conditions. The simulation results show the effectiveness of the proposed control strategy to not only supply the local load on an appropriate voltage and current quality but also maintaining the amount of injected power at the operator’s desired level.

Keywords

Main Subjects

References

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Journal of Operation and Automation in Power Engineering
Volume 7, Issue 2
October 2019
Pages 235-245

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History

  • Receive Date: 07 July 2018
  • Revise Date: 22 January 2019
  • Accept Date: 09 March 2019
  • First Publish Date: 01 October 2019

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