pvpltools.module_efficiency.motherpv

pvpltools.module_efficiency.motherpv(irradiance, temperature, a, b, c, d, gamma_ref, aa, bb)

Calculate PV module efficiency using the MotherPV model.

The efficiency varies with irradiance and operating temperature and is determined by 7 parameters as described in [1].

Parameters:

• irradiance (non-negative numeric, W/m²) – The effective irradiance incident on the PV module.

• temperature (numeric, °C) – The module operating temperature.

• a (float) – Six model parameters usually determined by regression.

• b (float) – Six model parameters usually determined by regression.

• c (float) – Six model parameters usually determined by regression.

• d (float) – Six model parameters usually determined by regression.

• aa (float) – Six model parameters usually determined by regression.

• bb (float) – Six model parameters usually determined by regression.

• gamma_pmp (float) – The temperature coefficient of power, which may be taken from the module datasheet or also determined by regression.

Returns:

eta – The efficiency of the module at the specified irradiance and temperature.

Return type:

numeric

See also

fit_efficiency_model, adr

Notes

A comprehensive comparison of efficiency models is found in [2] and [3].

References

[1]

A. G. de Montgareuil, et al., “A new tool for the MotherPV method: modelling of the irradiance coefficient of photovoltaic modules,” in 24th European Photovoltaic Solar Energy Conference (EU PVSEC), 2009, pp. 21-25.

[2]

A. Driesse and J. S. Stein, “From IEC 61853 power measurements to PV system simulations”, Sandia Report No. SAND2020-3877, 2020.

[3]

A. Driesse, M. Theristis and J. S. Stein, “A New Photovoltaic Module Efficiency Model for Energy Prediction and Rating”, forthcoming.

Author: Anton Driesse, PV Performance Labs

Examples using pvpltools.module_efficiency.motherpv

Module efficiency models

Module efficiency models