pvstring

This module contains the PVstring class.

PVstring

class pvmismatch.pvmismatch_lib.pvstring.PVstring(numberMods=10, pvmods=None, pvconst=None)

A class for PV strings.

Parameters:

• numberMods – number of modules in string
• pvmods (list, PVmodule) – either a list of modules, an instance of PVmodule [Optional]
• pvconst – a configuration constants object

calcString()

Calculate string I-V curves. Returns (Istring, Vstring, Pstring) : tuple of numpy.ndarray of float

numberMods = None

number of module in string

plotStr()

Plot string I-V curves. Returns strPlot : matplotlib.pyplot figure

pvconst = None

PVconstants used in PVstring

pvmods = None

list of PVModule in PVstring

setSuns(Ee)

Set irradiance on cells in modules of string in system. If Ee is … … scalar, then sets the entire string to that irradiance. … a dictionary, then each key refers to a module in the string, and the corresponding value are passed to setSuns()

Parameters:Ee (dict or float) – irradiance [suns]

For Example:

Ee={0: {'cells': (1,2,3), 'Ee': (0.9, 0.3, 0.5)}}  # set module 0
Ee=0.91  # set all modules to 0.91 suns
Ee={12: 0.77}  # set module with index 12 to 0.77 suns
Ee={8: [0.23, (0, 1, 2)], 7: [(0.45, 0.35), (71, 72)]}
# set module 8, cells 0, 1 and 2 to 0.23 suns, then set module 7, cell
#   71 to 0.45 suns and module 72 to 0.35 suns.

setTemps(Tc)

Set temperature on cells in modules of string in system. If Tc is … … scalar, then sets the entire string to that temperature. … a dictionary, then each key refers to a module in the string, and the corresponding value are passed to setTemps()

Parameters:Tc (dict or float) – temperature [K]

For Example:

Tc={0: {'cells': (1,2,3), 'Tc': (323.15, 348.15, 373.15)}}  # set module 0
Tc=323.15  # set all modules to 323.15K (50°C)
Tc={12: 348.15}  # set module with index 12 to 348.15K (75°C)