학술논문

Accurate Performance Predictions of Large PV Systems with Shading using Submodule Mismatch Calculation
Document Type
Conference
Source
2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC) Photovoltaic Energy Conversion (WCPEC), 2018 IEEE 7th World Conference on. :3635-3639 Jun, 2018
Subject
Aerospace
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Photonics and Electrooptics
Power, Energy and Industry Applications
Mathematical model
NIST
Inverters
Computational modeling
Geometry
Arrays
Meteorology
shading
performance
mismatch
Language
Abstract
Accurate performance prediction of large PV systems with shading is challenging because computational complexity increases with system size. Solar Farmer is a new PV performance model with 3-D shading. Comparing predictions with measurements from the NIST PV test bed we observed a decrease in the annual difference of 17% between module and submodule shading. By varying the resolution of shading from module to cell level, we also determined that 5 points persubmodule, resulting in a 0.5% annual difference, was sufficient to accurately predict performance of shaded systems. Therefore, a balance of accuracy and computational expense was achieved allowing performance predictions of large PV systems with shade.