Dynamic Thermal Modeling and Application of Electrical Machine in Hybrid Drives

Zhe Huang, Francisco Marquez, Yury Loayza Vargas, Avo Reinap, Mats Alaküla

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

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This paper presents a holistic view of thermal modeling for an electrical machine used in a Hybrid Electrical Vehicle (HEV). This interconnected system model focuses on the thermal assessment of an electrical machine in a HEV application and estimates the time to failure of the machine depending on the construction of the insulation system and the exploitation of the machine. A transient thermal model of the machine is made as a Lumped Parameter Model (LPM) based on dimensions, material properties and Finite Element Analysis (FEA) determining the power loss model and Computational Fluid Dynamics (CFD) cooling model. The LPM thermal model is compared to measurements and later used in a vehicle powertrain model. Based on the verified thermal model, the estimation of the winding temperature in the machine over different driving cycles is used to predict the thermal degradations of the main insulation and the thermal lifetime of the machine.
Original languageEnglish
Title of host publication2014 International Conference on Electrical Machines (ICEM)
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479943883
Publication statusPublished - 2014
EventInternational Conference on Electrical Machines (ICEM), 2014 - Berlin, Berlin, Germany
Duration: 2014 Sept 22014 Sept 5


ConferenceInternational Conference on Electrical Machines (ICEM), 2014

Subject classification (UKÄ)

  • Electrical Engineering, Electronic Engineering, Information Engineering


  • Thermal Degradation
  • Electrical Machine HEVs
  • Dynamic Thermal Modeling
  • Drivetrain Simulation


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