pvperfsolar performance modeling

Reference / Night consumption

Model option

On

The standby draw is counted on every timestep without production

Inputs used: Night loss, Inverter night consumption

Method

The inverter's night consumption is drawn on every timestep in which it does not start.

The math

Pinv,i=−Pnt(no start)(1)P_{inv,i} = -P_{nt} \quad (\text{no start}) \tag{1}

where

Symbol Meaning Unit
Pinv,iP_{inv,i} the inverter output at timestep ii W
PntP_{nt} the inverter's night consumption W

References

  1. King, Gonzalez, Galbraith & Boyson 2007, Performance Model for Grid-Connected Photovoltaic Inverters, Sandia report SAND2007-5036
  2. Analysis of PVsyst 8.1.5 outputs shows this convention in its results.

API

ac_losses.inverter_night_tare = true

Symbols follow the symbol registry.