RT Journal Article
T1 Experimental results of controlled PV module for building integrated PV systems
A1 Román, E.
A1 Martinez, V.
A1 Jimeno, J. C.
A1 Alonso, R.
A1 Ibañez, P.
A1 Elorduizapatarietxe, S.
AB Last issues about Building Integrated Photovoltaic Systems (BIPV) still show average Performance Ratio (PR) values in the range of 0.75-0.80. The main causes well known: partial shadows, temperature effects, PV inverter losses, thermal losses, etc. and mismatching losses. Ideally, all the modules work in the same conditions, but differences between modules really exist due to differences in the working temperature, the inclination or orientation angles, differences in the I-V characteristic coming from the manufacturing process, etc. The effect is that the output power of the complete PV system is lower than the addition of the power of each PV module. These mismatching losses can be decreased by means of suitable electronics. This paper presents the experimental results obtained over PV systems equipped with controlled PV modules, PV modules with low cost and high efficiency DC-DC converters, including MPPT algorithm and other functions, such as power control and Power Line Communications (PLC). Tests have been divided into two great categories: tests on the electronic performance of the DC-DC converter and tests on grid-connected PV systems with multiple DC-DC converters. Many of these tests have been carried out taking advantage of the PV System Test Platform, a powerful tool especially designed by Robotiker to evaluate all kind of PV systems, especially systems with differences between modules. Aspects of the DC-DC converter performance have been detailed and among the most important experiments, the paper analyses different situations such as partial shadows, different inclined planes, PV systems with different PV modules, and finally a comparison between a conventional system and a system composed by controlled PV modules have been described. To sum up, the importance of a good system dimensioning is analysed, with very interesting results.
SN 0038-092X
YR 2008
FD 2008-05
LK https://hdl.handle.net/11556/3707
UL https://hdl.handle.net/11556/3707
LA eng
NO Román , E , Martinez , V , Jimeno , J C , Alonso , R , Ibañez , P & Elorduizapatarietxe , S 2008 , ' Experimental results of controlled PV module for building integrated PV systems ' , Solar Energy , vol. 82 , no. 5 , pp. 471-480 . https://doi.org/10.1016/j.solener.2007.09.004
NO The Spanish Ministry of Science and Technology has funded this research issue, within the project GENIUS (TIC 2002-04245-C02), in which the Technology Institute of Microelectronics of the Basque Country University, the Institute of Solar Energy (Spain), Robotiker Technology Centre and ISOFOTON participate. Besides, the research activities are included within the strategic research programme about Energy and Distributed Generation GENEDIS funded by Basque Country government, in which Robotiker carries out a research activity focused on the electronics applied to PV modules, as a measure to improve the PV systems behaviour and to reduce the losses in PV systems.
DS TECNALIA Publications
RD 29 jul 2024