The Delphi4LED project is identifying methodologies for the extraction of multi-domain,
electro-opto-thermal compact models of LED packages. The temperature dependent opto-electro
model provides the thermal model with a thermal power dissipation, the thermal model
provides the opto-electro model with a junction temperature. Together they are co-simulated
to convergence whereupon both thermal and optical behaviour is predicted. Such models
would be used by lighting designers to provide rapid indication of the performance
of a proposed luminaire design. The thermal portion of the multi-domain model is required
at least to provide temperature prediction of the chip junction and potentially phosphor
and solder connection point temperatures. Equivalent thermal networks or reduced order
models are both candidate approaches for the thermal model. This study will detail
the extraction process for both, compare their performance and accuracy and discuss
pros and cons regarding their possible adoption.
