ROB.FAULT Mechanical and Electromagnetic Fault Simulation

MANATEE software e-NVH Robust Design Solutions
Sub-module ROB.FAULT
Function Mechanical and Electromagnetic Fault Simulation: eccentricity, lamination asymmetries, short-circuits, broken bar, demagnetization, pole misplacements etc.
Tutorials TBC
Validation TBC.
See also


This module of MANATEE software specialized in electric motor NVH virtual prototyping performs electromagnetic calculations under faulty conditions or including manufacturing tolerances. Variations of dimensions and magnetic material characteristics can significantly influence the noise level of electrical machines. It is common to find +/-10 dB variation out of a electric motor production line.


This module allows MANATEE to include manufacturing tolerances and fault simulation when calculating magnetic loads such as:

  • static and dynamic eccentricities
  • uneven airgap
  • uneven magnetization
  • uneven pole displacement
  • stator short circuit

The NVH assessment NVH of geometrical and magnetic asymmetries is both useful at design stage (to specify tolerances) or after manufacturing (to troubleshoot noise issues, or to perform condition monitoring). Part of faults can be applied even when importing flux density with IO.FLUX (e.g. outer structure ovalization, and eccentricities), without the need to carry electromagnetic calculations without symmetry.

Technical details



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