ArchivIA - Archivio istituzionale dell'Universita' di Catania >
Tesi di dottorato >
Area 09 - Ingegneria industriale e dell'informazione >
Please use this identifier to cite or link to this item:
|Issue Date: ||4-May-2011|
|Authors: ||Crisafulli, Vittorio Claudio|
|Title: ||Analysis and Development of new strategies for solar energy conversion: New systems of integration, topologies and control|
|Abstract: ||In the recent past, energy and environment have played opposite roles in human progress.
Energy has been as an engine for the development and the environment has been as the
breaker of it.
Only after a more conscious and rigorous international policy on environment protection,
not opposed to the development, energy and environmental matters have become unified
behind a new sustainable model. This has determined new strategies in the energy sector.
Hence, renewable sources have become a must in this new sustainable model.
The key role in the last decade has been played by the Distributed Power Generation Systems
(DPGS) which present an efficient and economic way of generating electricity closer to
the load(s). The DPGS can contribute to an efficient and renewable electricity future by
potentially: increasing the use of renewable sources of energy; improving the efficiency of the
electricity system by reducing transmission and distribution losses; improving the security of
the electricity supply through increased diversity of supply and reduced vulnerability to
simultaneous system failures. However, the new trend of using DPGS comes also with a suite
of new challenges. One of the challenges is the interaction between the DPGS and the utility
grid. As a consequence, grid interconnection requirements applied to the distributed generation
are continuously updated in order to maintain the quality and the stability of the utility
Consequently, the major tasks of this thesis were to analyze and to develop new strategies
for solar energy conversion addressing efficiency and quality in order to allow the DPGS not
only to deliver power with high efficiency to the utility grid but also to sustain it.
This thesis was divided into three main parts, as follows: Ã Â¢ Small Photovoltaic System:
AC moduleÃ Â¢ , Ã Â¢ Control of DPGSÃ Â¢ and Ã Â¢ New Topologies and Devices, technologies for
multilevel inverter addressing grid connectionÃ Â¢ .
In the first part, the main focus was on topologies for module integration. Additionally, a
new topology has been proposed and developed and successfully tested.
In the second part, the main focus was c on Control, PWM techniques and ancillary function
as grid-connection algorithms.
In the third part, the main reported research was concentrated around the role of multilevel
inverter in the next future of DPGS. Focusing on topologies and technologies device.|
|Appears in Collections:||Area 09 - Ingegneria industriale e dell'informazione|
Files in This Item:
|CrisafulliTesi.pdf||7,14 MB||Adobe PDF||View/Open
Items in ArchivIA are protected by copyright, with all rights reserved, unless otherwise indicated.