Abstract
It is often difficult to model the effects of partial shading conditions on PV array performance, as shade losses are nonlinear and depend heavily on a system's particular configuration. This work describes and implements a simple method for modeling shade loss: a database of shade impact results (loss percentages), generated using a validated, detailed simulation tool and encompassing a wide variety of shading scenarios. The database is intended to predict shading losses in crystalline silicon PV arrays and is accessed using basic inputs generally available in any PV simulation tool. Performance predictions using the database are within 1-2% of measured data for several partially shaded PV systems, and within 1% of those predicted by the full, detailed simulation tool on an annual basis. The shade loss database shows potential to considerably improve performance prediction for partially shaded PV systems.
| Original language | American English |
|---|---|
| Number of pages | 8 |
| State | Published - 2015 |
| Event | 42nd IEEE Photovoltaic Specialists Conference - New Orleans, Louisiana Duration: 14 Jun 2015 → 19 Jun 2015 |
Conference
| Conference | 42nd IEEE Photovoltaic Specialists Conference |
|---|---|
| City | New Orleans, Louisiana |
| Period | 14/06/15 → 19/06/15 |
NREL Publication Number
- NREL/CP-5J00-64570
Keywords
- modeling
- photovoltaic systems
- shading
- solar energy
