Non-linear thermal simulation at system level: Compact modelling and experimental validation
| Autor: | Nicola Delmonte, Mirko Bernardoni, Paolo Cova, Diego Chiozzi |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Work (thermodynamics) Computer science 020208 electrical & electronic engineering Hardware_PERFORMANCEANDRELIABILITY 02 engineering and technology Condensed Matter Physics Network topology 01 natural sciences Atomic and Molecular Physics and Optics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Power (physics) Nonlinear system 0103 physical sciences Thermal Thermography 0202 electrical engineering electronic engineering information engineering Transient (oscillation) Electrical and Electronic Engineering Safety Risk Reliability and Quality Focus (optics) Simulation |
| Zdroj: | Microelectronics Reliability. 80:223-229 |
| ISSN: | 0026-2714 |
| DOI: | 10.1016/j.microrel.2017.12.005 |
| Popis: | In this work, a general methodology to extract compact, non-linear transient thermal models of complex thermal systems is presented and validated. The focus of the work is to show a robust method to develop compact and accurate non-linear thermal models in the general case of systems with multiple heat sources. A real example of such a system is manufactured and its thermal behaviour is analyzed by means of Infra-Red thermography measurements. A transient, non-linear Finite-Element-Method based model is therefore built and tuned on the measured thermal responses. From this model, the transient thermal responses of the system are calculated in the locations of interest. From these transient responses, non-linear compact transient thermal models are derived. These models are based on Foster network topology and they can capture the effect of thermal non-linearities present in any real thermal system, accounting for mutual interaction between different power sources. The followed methodology is described, verification of the model against measurements is performed and limitations of the approach are therefore discussed. The developed methodology shows that it is possible to capture strongly non-linear effects in multiple-heat source systems with very good accuracy, enabling fast and accurate thermal simulations in electrical solvers. |
| Databáze: | OpenAIRE |
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