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Electronics 2018, 7(9), 175; https://doi.org/10.3390/electronics7090175

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

Electrical Power & Energy Systems Research Lab (EPESRL), School of Engineering, Deakin University, Geelong, VIC 3216, Australia
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Received: 23 July 2018 / Revised: 24 August 2018 / Accepted: 1 September 2018 / Published: 3 September 2018
(This article belongs to the Special Issue Grid Connected Photovoltaic Systems)
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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. View Full-Text
Keywords: partial feedback linearization; model predictive controller; noise or disturbance decoupling; grid-connected systems; multiple photovoltaic (PV) units; point of common coupling partial feedback linearization; model predictive controller; noise or disturbance decoupling; grid-connected systems; multiple photovoltaic (PV) units; point of common coupling
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Orchi, T.F.; Mahmud, M.A.; Oo, A.M.T. Partial Feedback Linearizing Model Predictive Controllers for Multiple Photovoltaic Units Connected to Grids through a Point of Common Coupling. Electronics 2018, 7, 175.

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