TUTCRIS - Tampereen teknillinen yliopisto


Mathematical Parametrisation of Irradiance Transitions Caused by Moving Clouds for PV System Analysis



Otsikko32nd European Photovoltaic Solar Energy Conference and Exhibition (32nd EU PVSEC), 20–24 June, 2016, Munich, Germany
ISBN (elektroninen)3-936338-41-8
DOI - pysyväislinkit
TilaJulkaistu - 2016
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaEuropean Photovoltaic Solar Energy Conference -
Kesto: 1 tammikuuta 2014 → …


ConferenceEuropean Photovoltaic Solar Energy Conference
Ajanjakso1/01/14 → …


Irradiance transitions caused by moving clouds can have considerable negative effects on the operation of photovoltaic (PV) systems. They may lead to failures in maximum power point tracking causing extra losses and to mismatch power losses due to partial shading. Further, they can cause significant fluctuations in the output power of PV systems.
This paper presents a method to parametrise irradiance transitions caused by moving clouds based on a mathematical model of the transitions. Irradiance transitions were parametrised by four variables: shading strength, shape related parameter b, speed and direction of movement which have no correlation with each other. The applicability of the parametrisation method in PV system analysis was demonstrated by simulations. The simulation results show that the developed parametrisation method is suitable for long-term PV system analysis.