pvlib.inverter.sandia_multi

pvlib.inverter.sandia_multi(v_dc, p_dc, inverter)

Convert DC power and voltage to AC power for an inverter with multiple MPPT inputs.

Uses Sandia’s Grid-Connected PV Inverter model [1]. Extension of [1] to inverters with multiple, unbalanced inputs as described in [2].

Parameters:

• v_dc (tuple, list or array of numeric) – DC voltage on each MPPT input of the inverter. If type is array, must be 2d with axis 0 being the MPPT inputs. [V]

• p_dc (tuple, list or array of numeric) – DC power on each MPPT input of the inverter. If type is array, must be 2d with axis 0 being the MPPT inputs. [W]

• inverter (dict-like) – Defines parameters for the inverter model in [1].

Returns:

power_ac (numeric) – AC power output for the inverter. [W]

Raises:

ValueError – If v_dc and p_dc have different lengths.

Notes

See pvlib.inverter.sandia() for definition of the parameters in inverter.

References

[1] (1,2,3)

D. King, S. Gonzalez, G. Galbraith, W. Boyson, “Performance Model for Grid-Connected Photovoltaic Inverters”, Sandia National Laboratories, Albuquerque, N.M., USA, SAND2007-5036, Sept. 2007. DOI: 10.2172/920449

[2]

C. Hansen, J. Johnson, R. Darbali-Zamora, N. Gurule. “Modeling Efficiency Of Inverters With Multiple Inputs”, 49th IEEE Photovoltaic Specialist Conference, Philadelphia, PA, USA. June 2022. DOI: 10.1109/PVSC48317.2022.9938490

See also

pvlib.inverter.sandia