Electric Motors

One of the most common uses of permanent magnets is for creating the magnetic fields in electric motors. The only way to try new concepts or to optimize an existing design is by either finite element or boundary element simulation.

MainMotors

Some of the common parameters available:

  • Torque curves as a function of angular position
  • Flux linkage calculations for determining the back electromotive force
  • Losses which can then be used to calculate the thermal profile of the motor
  • Advanced winding features which enable the designer to include winding diagrams in the finite/boundary element analysis.
  • Transient calculation such as current and torque versus time

Some specific motor cases:

  • Brushless DC Motors:
    For brushless DC motor simulation it is usually sufficient to conduct a two dimensional (2D) analysis with MAGNETO™. If it is necessary to include the effects of flux leakage at the ends of the motor, then three dimensional (3D) program AMPERES™ should be used.
  • Induction Motors:
    For induction motor simulation it is usually sufficient to conduct a 2D analysis with OERSTED™. If it is necessary to include the effects of flux leakage at the ends of the motor, then FARADAY™ should be used.

Voice Coil Motors:

  • Hard Disk Read-Write Actuator Arm:
    AMPERES™ is recommended, as the configuration of the permanent magnets requires a full 3D analysis.
  • Loudspeakers:
    Conventional dynamic cone loudspeakers can usually be analyzed using a MAGNETO™ RS model. More exotic shapes may require AMPERES™, and loudspeakers employing electrostatic forces may require ELECTRO™ or COULOMB™. The Boundary Element Method has a particular advantage for this application because of its ability to generate extremely accurate air gap field analysis.

Related Products

ELECTRO™

ELECTRIC FIELD SOLVER

ELECTRO
MAGNETO™

MAGNETIC FIELD SOLVER

MAGNETO
OERSTED™

EDDY CURRENT SOLVER

OERSTED
KELVIN™

HEAT TRANSFER SOLVER

KELVIN
COULOMB™

3D ELECTRIC FIELD SOLVER

COULOMB
AMPERES™

3D MAGNETIC FIELD SOLVER

AMPERES
FARADAY™

3D EDDY CURRENT SOLVER

FARADAY
CELSIUS™

3D HEAT TRANSFER SOLVER

CELSIUS