Pvwattsv1Poa¶
Wrapper for SAM Simulation Core model: cmod_pvwattsv1_poa.cpp
Input Consistency Warning¶
As described in Possible Problems, some input parameters are interdependent but the equations that enforce consistency are not available in this PySAM module. Therefore, the onus is on the PySAM user to check that interdependencies are correctly handled. The variables which may require additional logic include:
Provided for each of these inputs is a list of other inputs that are potentially interdependent.
Creating an Instance¶
Refer to the Initializing a Model page for details on the different ways to create an instance of a PySAM class.
Pvwattsv1Poa model description
Pvwattsv1Poa
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PySAM.Pvwattsv1Poa.
default
(config) → Pvwattsv1Poa¶ Use default attributes None
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PySAM.Pvwattsv1Poa.
from_existing
(data, optional config) → Pvwattsv1Poa¶ Share underlying data with an existing PySAM class. If config provided, default attributes are loaded otherwise.
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PySAM.Pvwattsv1Poa.
new
() → Pvwattsv1Poa¶
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PySAM.Pvwattsv1Poa.
wrap
(ssc_data_t) → Pvwattsv1Poa¶ Use existing PySSC data
Warning
Do not call PySSC.data_free on the ssc_data_t provided to
wrap
Functions¶
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class
PySAM.Pvwattsv1Poa.
Pvwattsv1Poa
¶ This class contains all the variable information for running a simulation. Variables are grouped together in the subclasses as properties. If property assignments are the wrong type, an error is thrown.
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assign
(dict) → None¶ Assign attributes from nested dictionary, except for Outputs
nested_dict = { 'Weather': { var: val, ...}, ...}
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execute
(int verbosity) → None¶ Execute simulation with verbosity level 0 (default) or 1
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export
() → dict¶ Export attributes into nested dictionary
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unassign
(name) → None¶ Unassign a value in any of the variable groups.
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value
(name, optional value) → Union[None, float, dict, sequence, str]¶ Get or set by name a value in any of the variable groups.
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Weather Group¶
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class
PySAM.Pvwattsv1Poa.Pvwattsv1Poa.
Weather
¶ -
assign
() → None¶ Assign attributes from dictionary
Weather_vals = { var: val, ...}
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export
() → dict¶ Export attributes into dictionary
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beam
¶ Direct normal radiation [W/m2]
Required: True
Type: sequence
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incidence
¶ Incidence angle to surface [deg]
Constraints: LENGTH_EQUAL=beam
Required: True
Type: sequence
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poa_beam
¶ Incident direct normal radiation [W/m2]
Constraints: LENGTH_EQUAL=beam
Required: True
Type: sequence
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poa_gnddiff
¶ Incident ground diffuse irradiance [W/m2]
Constraints: LENGTH_EQUAL=beam
Required: True
Type: sequence
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poa_skydiff
¶ Incident sky diffuse radiation [W/m2]
Constraints: LENGTH_EQUAL=beam
Required: True
Type: sequence
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tdry
¶ Dry bulb temperature [‘C]
Constraints: LENGTH_EQUAL=beam
Required: True
Type: sequence
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wspd
¶ Wind speed [m/s]
Constraints: LENGTH_EQUAL=beam
Required: True
Type: sequence
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PVWatts Group¶
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class
PySAM.Pvwattsv1Poa.Pvwattsv1Poa.
PVWatts
¶ -
assign
() → None¶ Assign attributes from dictionary
PVWatts_vals = { var: val, ...}
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export
() → dict¶ Export attributes into dictionary
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derate
¶ System derate value [frac]
Constraints: MIN=0,MAX=1
Required: True
Type: float
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gamma
¶ Max power temperature coefficient [%/’C]
Required: If not provided, assumed to be -0.5
Type: float
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inoct
¶ Nominal operating cell temperature [‘C]
Constraints: POSITIVE
Required: If not provided, assumed to be 45.0
Type: float
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inv_eff
¶ Inverter efficiency at rated power [frac]
Constraints: MIN=0,MAX=1
Required: If not provided, assumed to be 0.92
Type: float
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step
¶ Time step of input data [sec]
Constraints: POSITIVE
Required: If not provided, assumed to be 3600
Type: float
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system_size
¶ Nameplate capacity [kW]
Constraints: MIN=0.5,MAX=100000
Required: True
Type: float
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t_ref
¶ Reference cell temperature [‘C]
Constraints: POSITIVE
Required: If not provided, assumed to be 25.0
Type: float
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Outputs Group¶
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class
PySAM.Pvwattsv1Poa.Pvwattsv1Poa.
Outputs
¶ -
assign
() → None¶ Assign attributes from dictionary
Outputs_vals = { var: val, ...}
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export
() → dict¶ Export attributes into dictionary
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ac
¶ AC system output [kWhac]
Type: sequence
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dc
¶ DC array output [kWhdc]
Type: sequence
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tcell
¶ Cell temperature [‘C]
Type: sequence
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