Partial Feedback Linearizing Model Predictive Controllers for Multiple Photovoltaic Units Connected to Grids through a Point of Common Coupling

Tahsin Fahima Orchi, Md Apel Mahmud, Amanullah Maung Than Oo

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)
17 Downloads (Pure)

Abstract

In this paper, partial feedback linearizing model predictive controllers are designed for grid-connected systems comprising multiple photovoltaic (PV) units where these units are connected through a point of common coupling (PCC). The proposed controllers are designed for voltage source inverters (VSIs) based on comprehensive dynamical models of grid-connected PV systems with the proposed topology. The proposed partial feedback linearization scheme decouples multiple PV units in the forms of several reduced-order subsystems and enables linear controller design through the linear continuous-time receding horizon model predictive control scheme. The proposed partial feedback linearization scheme also considers dynamic interactions among multiple PV units as external noises or disturbances and decouples these noises. This paper includes the noise decoupling capability of the partial feedback linearization for grid-connected PV systems with multiple PV units which are connected through a PCC. Simulation results clearly demonstrate the effectiveness of the proposed scheme under different operating conditions as compared to an existing proportional integral controller.

Original languageEnglish
Article number175
Number of pages18
JournalElectronics (Switzerland)
Volume7
Issue number9
DOIs
Publication statusPublished - 3 Sept 2018

Keywords

  • grid-connected systems
  • model predictive controller
  • multiple photovoltaic (PV) units
  • noise or disturbance decoupling
  • partial feedback linearization
  • point of common coupling

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