Modelling Amorphous Silicon Photovoltaic Arrays Using Positive Temperature Coefficients and Standard Ambient Parameters
A scheme is presented for modelling the observed seasonal variation of output power of thin-film single junction amorphous silicon a-Si photovoltaic PV arrays using laboratory measured parameters and historical climatic data. The model is based on parameters derived from controlled light-soaking and annealing experiments. The traditional alpha and beta, with respectively positive and negative response, are counteracted by an additional annealing coefficient with a slow positive response. The model is compared to monitoring data of the ELSA facade at the JRC Ispra in northern Italy. We demonstrate that a-Si:H PV facades may be modelled by a combination of temperature coefficients, a knowledge of annealing behaviour of light-soaked modules and a record of the climate conditions at the installation. This is interpreted as a positive temperature coefficient for the a-Si facade.
Bibliographic Reference: Paper presented: 13th European Photovoltaic Solar Energy Conference, Nice (FR), October 23-27, 1995
Availability: Available from (1) as Paper EN 39422 ORA
Record Number: 199512072 / Last updated on: 1996-01-15
Original language: en
Available languages: en