Master Thesis: Model based NVH analysis of manufacturing tolerances in electric motor

  • Graz
  • Diplomarbeit, Dissertation
  • Einsteiger
  • 20.11.2017

AVL is the world's largest independent company for development of powertrains (combustion engines, hybrid systems, electric drive) as well as simulation and test systems for passenger cars, trucks and marine engines.

We offer a master thesis:

Model based NVH analysis of manufacturing tolerances in electric motor

Nowadays hybrid and fully electric drives have been developing in variety, power and range. One of the main NVH sources is the e-motor. The excitations in the e-motor, caused by the electromagnetic forces, excite the structure. Even though the design of two electric axles are the same, there are differences due to manufacturing tolerances. Therefore two different vehicles can have a very different NVH characteristic. To increase the robustness is required to find out the effect of different parameters and control the deviations in NVH behavior. In this study an induction motor will be evaluated.


  • Literature study
  • FEM simulation of the Electric motor
  • Study different manufacturing errors such as eccentricity on the magnetic field
  • Order and amplitude analysis on the forces on the rotor structure rotor, and guidelines for the existing orders
  • Forced response calculation, e motor housing and driveline due to electromagnetic excitation
  • Comparison of the cases and design recommendations and guideline


  • Electrical or Mechanical engineering, Technical physics


  • Experience in electric motors is appreciated
  • Language: English or German

Renumeration: The successful completion of the thesis is a one-time fee of EUR 2.500, - gross remuneration

MSc. Mehdi Mehrgou
Lead Engineer NVH Simulation
Tel.: +43 316 787 4313

Job empfehlen


Hans-List-Platz 1
8020 Graz

Über uns

AVL ist das weltweit größte unabhängige Unternehmen für die Entwicklung, Simulation und Prüftechnik von Antriebssystemen (Hybrid, Verbrennungsmotoren, Getriebe, Elektromotoren, Batterien und Software) für PKW, LKW und Großmotoren. AVL ist in folgenden Unternehmensbereichen…

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