pvperfsolar performance modeling

Reference

API field

Series diode voltage drop

Voltage lost across a blocking diode in each string

Unit V

What it is

The forward voltage drop of a blocking diode in series with each string, in volts. The loss counts in the DC wiring loss row. The drop also lowers the voltage the inverter sees.

Typical values and how to get it

0 for a system without blocking diodes, about 0.7 V per silicon diode otherwise.

How it is applied

Ploss(t)=Vdiode I(t)P_{\text{loss}}(t) = V_{diode}\,I(t)

where

Symbol Meaning Unit
Ploss(t)P_{\text{loss}}(t) the diode loss of the timestep W
VdiodeV_{diode} this input V
I(t)I(t) the array current of one inverter, the sum of its string currents A

API

dc_losses.series_diode_voltage_v

Symbols follow the symbol registry.