Electric Motors

ProSIM has abilities to design, simulate, validate and optimise a variety of electric motors (and rotating machines). ProSIM has assisted its customers to develop efficient motors with increased performance. This has been achieved by precise estimation of losses; exploration of alternative materials, and slot geometries and other design parameters. Geometric and material properties are varied using virtual prototyping principles to optimise the design. We use finite element analysis based simulation of electro-magnetics to achieve this.

ProSIM expertise includes single phase/three phase induction motor, universal motor, switched reluctance motor, brush motor, brushless motor (IPM/ SPM). Typical work flow is given below:

  • Functional requirements
  • Basic engineering design
    • Mechanical
    • Electrical
  • Electro-magnetic analysis
  • Thermal Analysis
  • Structural Analysis
  • Optimisation
  • Design Roll Out
  • Release of manufacturing drawing

Typical Outputs in various stages in design and development of motors:

Design Stage

  • Sizing ( stator and rotor ID, OD, slot details, core length,)
  • Weight
  • Performance characteristics – for load and no load conditions
    • Torque v/s speed
    • Efficiency v/s speed
    • Power factor v/s speed
    • Losses v/s speed
    • Output power v/s speed


  • Number of poles
  • Winding details (number of turns, phase resistance, winding connection, type of winding etc)
  • Magnetic flux

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Eletro-magnetic analysis

  • Magnetic flux density distribution (including in air region)

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Temperature distribution

Temperature distribution

Eddy current

Eddy current

Magnetic flux density distribution of Motor as shown in JMAG



Couple loss

Couple loss


Electro-magnetic force, Lorentz force

Electro-magnetic force, Lorentz force

• FFT (fast Fourier transforms)
• Torque
• Cogging torque
• Voltage / current (depending on the input)
• Demagnetisation

Thermal Analysis

  • Heat dissipation
  • Temperature distribution (in stator / motor (core) / coil/ magnet/ and all parts

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Structural analysis of motors

  • Vibration analysis, mode shapes, frequencies, displacements, stresses of motors



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Noise (acoustics)