Pvwattsv11ts

Pvwattsv11ts

PySAM.Pvwattsv11ts.default(config) → Pvwattsv11ts

Load defaults for the configuration config. Available configurations are:

• None

Note

Some inputs do not have default values and may be assigned a value from the variable’s Required attribute. See variable attribute descriptions below.

PySAM.Pvwattsv11ts.from_existing(data, optional config) → Pvwattsv11ts

Share data with an existing PySAM class. If optional config is a valid configuration name, load the module’s defaults for that configuration.

PySAM.Pvwattsv11ts.new() → Pvwattsv11ts

PySAM.Pvwattsv11ts.wrap(ssc_data_t) → Pvwattsv11ts

Load data from a PySSC object.

Warning

Do not call PySSC.data_free on the ssc_data_t provided to wrap()

Pvwattsv11ts is a wrapper for the SSC compute module cmod_pvwattsv1_1ts.cpp

Interdependent Variables

The variables listed below are interdependent with other variables. If you change the value of one of these variables, you may need to change values of other variables. The SAM user interface manages these interdependent variables, but in PySAM, it is up to you change the value of all interdependent variables so they are consistent. See Interdependent Variables for examples and details.

• None

Functions

class PySAM.Pvwattsv11ts.Pvwattsv11ts

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.

assign(dict) → None

Assign attributes from nested dictionary, except for Outputs

nested_dict = { 'PVWatts': { var: val, ...}, ...}

execute(int verbosity) → None

Execute simulation with verbosity level 0 (default) or 1

export() → dict

Export attributes into nested dictionary

replace(dict) → None

Replace attributes from nested dictionary, except for Outputs. Unassigns all values in each Group then assigns from the input dict.

nested_dict = { 'PVWatts': { var: val, ...}, ...}

unassign(name) → None

Unassign a value in any of the variable groups.

value(name, optional value) → Union[None, float, dict, sequence, str]

Get or set by name a value in any of the variable groups.

PVWatts Group

class PySAM.Pvwattsv11ts.Pvwattsv11ts.PVWatts

assign(dict) → None

Assign attributes from dictionary, overwriting but not removing values.

PVWatts_vals = { var: val, ...}

export() → dict

Export attributes into dictionary.

replace(dict) → None

Replace attributes from dictionary, unassigning values not present in input dict.

PVWatts_vals = { var: val, ...}

azimuth

Azimuth angle [deg]

Options: E=90,S=180,W=270

Constraints: MIN=0,MAX=360

Required: True

Type:float

beam

Beam normal irradiance [W/m2]

Required: True

Type:float

day

Day [dy]

Info: 1-days in month

Required: True

Type:float

derate

System derate value [frac]

Constraints: MIN=0,MAX=1

Required: True

Type:float

diffuse

Diffuse irradiance [W/m2]

Required: True

Type:float

elevation

Elevation [m]

Required: False for configuration with default inputs. May be required if a variable dependent on its value changes. Example: For the Detailed PV - Single Owner configuration, only Subarray 1 is enabled in the configuration defaults, so Subarray 2 inputs would not be required; if Subarray 2 is enabled, then Subarray 2 inputs is required.

Type:float

fd

Diffuse fraction [0..1]

Constraints: MIN=0,MAX=1

Required: False. Automatically set to 1.0 if not assigned explicitly or loaded from defaults.

Type:float

gamma

Max power temperature coefficient [%/C]

Required: False. Automatically set to -0.5 if not assigned explicitly or loaded from defaults.

Type:float

hour

Hour [hr]

Info: 0-23

Required: True

Type:float

i_ref

Rating condition irradiance [W/m2]

Constraints: POSITIVE

Required: False. Automatically set to 1000 if not assigned explicitly or loaded from defaults.

Type:float

inv_eff

Inverter efficiency at rated power [frac]

Constraints: MIN=0,MAX=1

Required: False. Automatically set to 0.92 if not assigned explicitly or loaded from defaults.

Type:float

lat

Latitude [deg]

Required: True

Type:float

lon

Longitude [deg]

Required: True

Type:float

minute

Minute [min]

Info: 0-59

Required: True

Type:float

month

Month [mn]

Info: 1-12

Required: True

Type:float

poa

Plane of array irradiance [W/m2]

Required: True

Type:float

poa_cutin

Min reqd irradiance for operation [W/m2]

Constraints: MIN=0

Required: False. Automatically set to 0 if not assigned explicitly or loaded from defaults.

Type:float

pressure

Pressure [millibars]

Required: False for configuration with default inputs. May be required if a variable dependent on its value changes. Example: For the Detailed PV - Single Owner configuration, only Subarray 1 is enabled in the configuration defaults, so Subarray 2 inputs would not be required; if Subarray 2 is enabled, then Subarray 2 inputs is required.

Type:float

rotlim

Tracker rotation limit (+/- 1 axis) [deg]

Constraints: MIN=1,MAX=90

Required: False. Automatically set to 45.0 if not assigned explicitly or loaded from defaults.

Type:float

snow

Snow cover [cm]

Required: False. Automatically set to 0 if not assigned explicitly or loaded from defaults.

Type:float

system_size

Nameplate capacity [kW]

Required: True

Type:float

t_noct

Nominal operating cell temperature [C]

Constraints: POSITIVE

Required: False. Automatically set to 45.0 if not assigned explicitly or loaded from defaults.

Type:float

t_ref

Reference cell temperature [C]

Constraints: POSITIVE

Required: False. Automatically set to 25.0 if not assigned explicitly or loaded from defaults.

Type:float

tamb

Ambient temperature (dry bulb temperature) [C]

Required: True

Type:float

tcell

Module temperature [C]

Required: True

Type:float

tilt

Tilt angle [deg]

Options: H=0,V=90

Constraints: MIN=0,MAX=90

Required: naof:tilt_eq_lat

Type:float

time_step

Time step of input data [hr]

Constraints: POSITIVE

Required: False. Automatically set to 1 if not assigned explicitly or loaded from defaults.

Type:float

track_mode

Tracking mode [0/1/2/3]

Info: Fixed,1Axis,2Axis,AziAxis

Constraints: MIN=0,MAX=3,INTEGER

Required: True

Type:float

tz

Time zone [hr]

Required: True

Type:float

w_stow

Wind stow speed [m/s]

Constraints: MIN=0

Required: False. Automatically set to 0 if not assigned explicitly or loaded from defaults.

Type:float

wspd

Wind speed [m/s]

Required: True

Type:float

year

Year [yr]

Required: True

Type:float

Outputs Group

class PySAM.Pvwattsv11ts.Pvwattsv11ts.Outputs

assign(dict) → None

Assign attributes from dictionary, overwriting but not removing values.

Outputs_vals = { var: val, ...}

export() → dict

Export attributes into dictionary.

replace(dict) → None

Replace attributes from dictionary, unassigning values not present in input dict.

Outputs_vals = { var: val, ...}

ac

AC system output [Wac]

Type:float

dc

DC array output [Wdc]

Type:float