API field
DC wiring model
How the DC wiring loss varies with load
What it is
Selects how the DC wiring loss is computed at each timestep from the design loss.
Typical values and how to get it
Chosen on the Model tab.
Values
I²R on the MPP current = ohmic_i2r (default): the design fraction becomes a wiring resistance, and the loss is that resistance times the square of the array current · Load ratio = load_ratio: the design fraction times the nameplate, times the square of the array power over the nameplate · Flat fraction = flat: the design fraction of the array power at every timestep
API
dc_losses.ohmic_model