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Energies 2012, 5(11), 4399-4416; doi:10.3390/en5114399

Analytical Investigation and Control System Set-up of Medium Scale PV Plants for Power Flow Management

Department of Electrical, Electronics and Telecommunication Engineering, Chemistry, Automation and Mathematical Modeling, University of Palermo, Viale delle Scienze 90128, Palermo, Italy
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Received: 17 September 2012 / Revised: 26 October 2012 / Accepted: 29 October 2012 / Published: 8 November 2012
(This article belongs to the Special Issue Solar Energy Systems and Materials)
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Abstract

In the field of photovoltaic (PV) plants and energy conversion from renewable sources, a large part of the technical literature is more devoted to practical aspects (new solar cells, electrically driven PV panels, safety, reduction of parasitic currents, etc.) than to theoretical investigations. Despite this tendency, this paper presents a mathematical analysis of a medium scale photovoltaic power generation system connected to the distribution network and of its control system. In such a system, the conversion stage is unique due to the absence of a boost chopper. The conducted analysis leads to the interesting conclusion that the inverter used in the plant presents two degrees of freedom, easy to exploit in a control system in which the inverter simultaneously realizes the interconnection to the grid and the MPPT control. The structure of the control system is then presented, discussed and validated by means of numerical simulations.
Keywords: photovoltaic systems; MPPT control; power electronics; PWM inverters photovoltaic systems; MPPT control; power electronics; PWM inverters
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Di Tommaso, A.O.; Genduso, F.; Miceli, R. Analytical Investigation and Control System Set-up of Medium Scale PV Plants for Power Flow Management. Energies 2012, 5, 4399-4416.

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