Flat efficiency

Method

The AC output is the DC input above the power threshold times one efficiency, the inverter's maximum efficiency from the Inverter tab (1). The efficiency curves and the DC voltage are not read. At or below the power threshold the output is zero. The operating-limit step cuts the output at the AC nameplate.

Settings

Setting	Value
Efficiency $\eta$	the inverter's maximum efficiency (Inverter tab); 98 % if not given; 96 % in the simple request
Power threshold $P_{thr}$	the inverter's power threshold (Inverter tab); 0 W if not given

The math

$$P_{out} = \begin{cases} \eta\,(P_{dc} - P_{thr}) & P_{dc} > P_{thr} \\ 0 & P_{dc} \le P_{thr} \end{cases} \tag{1}$$

where

Symbol	Meaning	Unit
$P_{out}$	the AC output before the operating limits	W
$\eta$	the efficiency	—
$P_{dc}$	the DC input	W
$P_{thr}$	the power threshold	W

API

inverter.efficiency_interpolation = flat

Symbols follow the symbol registry.