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Modeling Steps
Weather and Design
Sun Position
Solar Position Algorithm (SPA)
Basic Solar Position Models
Sandia’s Ephemeris Model
Irradiance & Insolation
Extraterrestrial Radiation
Air Mass
Direct Normal Irradiance
Piecewise Decomposition Models
DIRINT Model
Global Horizontal Irradiance
Diffuse Horizontal Irradiance
Spectral Content
AM 1.5 Standard Spectrum
Weather Data Sources for Performance Modeling
Spectral Irradiance Dataset from Albuquerque
Weather Observations
Air Temperature
Wind Speed and Direction
Precipitation
Air Pressure
Array Orientation
Fixed Tilt
Single Axis Tracking
Two-Axis Tracking
Array Orientation Errors
Effect of Array Tilt Errors
Effect of Array Azimuth Errors
Plane of Array (POA) Irradiance
Calculating POA Irradiance
POA Beam
Angle of Incidence
POA Ground Reflected
POA Sky Diffuse
Shading, Soiling, and Reflection Losses
Incident Angle Reflection Losses
Physical IAM Model
ASHRAE IAM Model
Martin and Ruiz IAM Model
Sandia IAM Model
Soiling Losses
Kimber Soiling Model
HSU Soiling Model
DC Module IV Characteristics
Module Temperature
Sandia Module Temperature Model
Faiman Module Temperature Model
Cell Temperature
Sandia Cell Temperature Model
PVsyst Cell Temperature Model
NOCT Cell Temperature
Fuentes Cell Temperature
Effective Irradiance
Spectral Response
Spectral Mismatch Definition
Spectral Mismatch Models
Single Diode Equivalent Circuit Models
De Soto “Five-Parameter” Module Model
PVsyst Module Model
Point-value models
Sandia PV Array Performance Model
Loss Factor Model
PVWatts
Improvements to PVWatts
DC Array IV
Mismatch Losses
DC Component Health
DC Wiring Losses
Array Utilization
DC to AC Conversion
CEC Inverter Test Protocol
Operating Temperature
Sandia Inverter Model
Driesse Inverter Model
Inverter Saturation or “Clipping”
Loss of Grid
Advanced Inverter Features
AC System Output
AC Wiring Losses
PV Performance Metrics
Performance Ratio
Normalized Efficiency
Performance Index
Annual Yield
PV Research Projects
Bifacial PV Project
Outdoor Bifacial PV Performance Data
Field Example of Bifacial Gain at Sandia
Bifacial PV Characterization and Rating Standards
Bifacial PV Performance Models
Ray Tracing Models for Backside Irradiance
RADIANCE Models
COMSOL Models
View Factor Models
Sandia View Factor Model Implementation
NREL View Factor Model Implementation
PV Lifetime Project
PV Lifetime Modules
PV Lifetime Field Deployments
Indoor Module Flash Testing
PV Degradation Modeling
Tools
PV_LIB Toolbox
GridPV Toolbox
Wavelet Variability Model
WVM Discrete Point Example
Polygon Vertices to Define Plant Footprint Example
WVM Square Plant Example
Solar Variability Zones
Spectral Irradiance Dataset from Albuquerque
Data Requirements for Model Validation
Resources and Events
Events and Workshops
PVPMC Blog
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IEA PVPS Task 13 Reports
2023 IEA Bifacial Tracking Modeling Exercise
2023 PVPMC Blind Modeling Comparison
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