Original scientific paper

https://doi.org/10.17559/TV-20161115224752

Thermal model of through flow universal motor by means of lumped parameter network

Blaž Benedik orcid.org/0000-0002-9480-8726 ; Domel, EMs and Home Appliances, d.o.o., Otoki 21, SI-4228 Železniki, Slovenia
Jože Duhovnik ; Laboratory for Engineering Design, Faculty of Mechanical Engineering, University of Ljubljana, Aškerčeva 6, SI-1000 Ljubljana, Slovenia
Janez Rihtaršič ; Domel, EMs and Home Appliances, d.o.o., Otoki 21, SI-4228 Železniki, Slovenia
Jože Tavčar orcid.org/0000-0001-9046-0913 ; Laboratory for Engineering Design, Faculty of Mechanical Engineering, University of Ljubljana, Aškerčeva 6, SI-1000 Ljubljana, Slovenia

Abstract

Being able to predict temperature rise inside a machine is as important as predicting its performance and life. Because temperature measurements and computational thermal simulations can be time consuming, thermal paths inside the through-flow universal motor were described by means of simple lumped parameter thermal network. Once the model was built, its unknown convection coefficients were tuned with the genetic algorithm tool in MatLab.
The model has been applied and successfully verified with measurements on two different types of a vacuum cleaner motor. Taking account of impeller losses as one of the model inputs makes temperature estimates more accurate regardless of machine’s operational regime.

Keywords

genetic algorithm; lumped parameter network; open-circuit cooling; steady-state thermal model; universal motor; vacuum cleaner motor

Hrčak ID:

179849

URI

https://hrcak.srce.hr/179849

Publication date:

14.4.2017.

Article data in other languages: croatian

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