Abstract:
This paper summarizes 3 years of monitoring of a 5 kWp building-top grid-connected photovoltaic
system. It is installed in Renewable Energy Research Laboratory in Rajamangala University of Technology
Suvarnabhumi (RMUTSB) Thailand. The system has been in operation since August 2003. The PV array
comprises of 84 a-Si modules and three single phase inverters. The inverters are tied to the utility grid via a
three-phase connection.
The performance study follows the IEA-PVPS Task2 performance parameters the average results
are performance ratio(PR) is equal to 0.73, reference yield is equal to 4.87, final yield is equal to 3.54, array
yield is equal to 4.35, array efficiency is equal to 6.15%, inverter efficiency is equal to 81.45%, and overall
plant efficiency is equal to 5.01%.
Keywords : performance, PV array, grid-connected, IEA-PVPS