Open Access
Table 3
Model components used for simulation of array DC and AC outputs.
| Model | Method (source) |
|---|---|
| Solar azimuth and zenith angle | pvl_ephemeris (PV_LIB for MATLAB) |
| Angle of incidence | pvl_getaoi (PV_LIB for MATLAB) |
| Plane of array irradiance – monofacial | pvl_isotropicsky (PV_LIB for MATLAB) |
| Plane of array irradiance – bifacial | Ray tracing (Bifacial_radiance) |
| Tracker tilt optimisation | Optimal angle calculated from hourly aggregated weather data. Constant rate of change of angle within each hour. (In-house algorithm) |
| Angular response | Martin and Ruiz model (Implemented in-house from [15]) |
| Spectral mismatch | pvl_FSspeccorr with airmass calcuated by pvl_relativeairmass and H2O content from pvl_calcPwat (PV_LIB for MATLAB) |
| Heat transfer used for design | Steady-state heat transfer model:
(Based on PVsyst model [16]) |
| Heat transfer used for simulation | Barry et al. dynamic heat transfer model (In-house implementation of [17]) |
| Module DC power | Single-diode model pvl_singlediode with DeSoto model parameters pvl_calcparams_desoto (PV_LIB for MATLAB) |
| Soiling | Fixed fractional loss of effective irradiance. Default loss is ksoiling = 2%. |
| Module mismatch | Fixed fractional loss of DC power. Default kmismatch = 1%. |
| DC wiring loss | Fractional loss of DC power scaling with string current
 . Default kwiring= 1%. |
| Inverter losses | Sandia inverter model pvl_snlinverter (PV_LIB for MATLAB) |
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