pvlib.pvsystem.pvwatts_dc¶
-
pvlib.pvsystem.
pvwatts_dc
(g_poa_effective, temp_cell, pdc0, gamma_pdc, temp_ref=25.0)[source]¶ Implements NREL’s PVWatts DC power model [R27]:
\[P_{dc} = \frac{G_{poa eff}}{1000} P_{dc0} ( 1 + \gamma_{pdc} (T_{cell} - T_{ref}))\]Parameters: g_poa_effective: numeric
Irradiance transmitted to the PV cells in units of W/m**2. To be fully consistent with PVWatts, the user must have already applied angle of incidence losses, but not soiling, spectral, etc.
temp_cell: numeric
Cell temperature in degrees C.
pdc0: numeric
Nameplate DC rating.
gamma_pdc: numeric
The temperature coefficient in units of 1/C. Typically -0.002 to -0.005 per degree C.
temp_ref: numeric
Cell reference temperature. PVWatts defines it to be 25 C and is included here for flexibility.
Returns: pdc: numeric
DC power.
References
[R27] (1, 2) A. P. Dobos, “PVWatts Version 5 Manual” http://pvwatts.nrel.gov/downloads/pvwattsv5.pdf (2014).