Solar Lattice

Concept

Single-diode model

ID
concept:single-diode-model
IRI
https://solarlattice.org/kb/concept/single-diode-model
Status
active
Also known as
single diode model, five-parameter model, Single Diode PV model
Category
Modules
Concept kind
physics

The single-diode model is an equivalent-circuit model of a solar cell or module that is used to calculate how the module behaves electrically. The PVsyst module model is built on the single-diode PV model. To set up the model in a monitoring platform such as PowerTrack, you need the cell technology, Isc, Voc, Impp, Vmpp, the Isc temperature coefficient (muIsc), the shunt and series resistances, and the number of cells in series and in parallel. Cell area, shunt resistance at a given irradiance and the exponential parameters are optional; enter NaN for any value you do not have. You can copy the parameter values straight from a PVsyst configuration or look them up in the module specifications online. Some fault detection systems train on simulated data generated with the single-diode or double-diode solar cell model instead of field data.

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Claims

related_to

c1 drafted · lead PVsyst

The PVsyst module model is based on the single-diode PV model.

c2 drafted · lead AlsoEnergy PowerTrack platform and API

PowerTrack can be set up with a PVsyst or single-diode model, using parameters taken from a PVsyst configuration or from module specifications.

c3 verified · fact Short-circuit current

Isc is one of the required model parameters.

verified by: review-workflowverified on: 2026-10-24

c4 drafted · lead Open-circuit voltage

Voc is one of the required model parameters.

c5 drafted · lead Double-diode model proposed

The double-diode model is an alternative solar cell model. Like the single-diode model, it is used to produce simulated data for fault detection.

Data