A Fast and Accurate Raytracing Approach for Assessing Photovoltaic Performance of Monoand Bifacial Panels in Complex Irradiance Conditions

Department of Building and Environmental Technology, Norwegian University of Life Sciences (NMBU), NO-1432 Ås, Norway

^* Corresponding author: arnkell.jonas.petersen@nmbu.no

Abstract

Numerous tools exist for evaluating photovoltaic (PV) system performance, these include design parameters and complexity that can deter non-specialist users. To facilitate wider adoption of PV technology in early-phase design, we present an approach that combines advanced raytracing integrated into the widely used building modelling tool Rhino 3D. This toolset includes models for both monoand bifacial PV panels, that process raytraced results and account for realistic heat loss and thermally dependent efficiency. Validation against measurements as well as comparison with industry standard PVsyst software in two urban scenarios, confirms the toolset's acceptable accuracy. A case study of agricultural PV showcases the tools versatility and running time. The user-friendly interface and advanced radiation modelling capabilities empower both specialists and non-specialists to assess PV system performance accurately and efficiently during the early design phases.