analytical investigation and control system set-up of medium scale pv plants for power flow management中等规模的分析调查和控制系统设置光伏功率流管理工厂.pdfVIP

Energies 2012, 5, 4399-4416; doi:10.3390/en5114399 OPEN ACCESS energies ISSN 1996-1073 /journal/energies Article Analytical Investigation and Control System Set-up of Medium Scale PV Plants for Power Flow Management Antonino Oscar Di Tommaso, Fabio Genduso * and Rosario Miceli Department of Electrical, Electronics and Telecommunication Engineering, Chemistry, Automation and Mathematical Modeling, University of Palermo, Viale delle Scienze 90128, Palermo, Italy; E-Mails: antoninooscar.ditommaso@unipa.it (A.O.D.T.); rosario.miceli@unipa.it (R.M.) * Author to whom correspondence should be addressed; E-Mail: genduso@dieet.unipa.it; Tel.: +39-09123860294; Fax: +39-091488452. Received: 17 September 2012; in revised form: 26 October 2012 / Accepted: 29 October 2012 / Published: 8 November 2012 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 expl