Dynamic Electromagnetics Module

Magnetic signature - eddy currents induced by ship rocking in the earth’s magnetic field

Magnetic signature – eddy currents induced by ship rocking in the earth’s magnetic field

The Dynamic Electromagnetic Module (Dynamic Module) can be used to calculate time varying electromagnetic fields and eddy current flow in EM devices and systems.

The Dynamic Module computes time varying fields and eddy currents in three dimensions. This includes eddy currents induced by simple moving conductors, i.e. where the movement does not change the geometry (e.g. rotating disk or infinite pipe of constant cross-section).

There are three different types of dynamic solution available, each having a different form of time variation:

  • Harmonic calculates steady-state ac currents where all fields and potentials are oscillating at the same frequency
  • Transient calculates transient eddy currents induced by the fields of driving currents, boundary conditions and external fields which change in time in a predetermined way
  • Fixed Velocity calculates eddy currents induced by motion which does not change the geometry of the model. The source fields and driving conditions are all time invariant

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transformer core on short-circuit

transformer core on short-circuit

Applications

  • Motors
  • Generators
  • Transformers
  • NDT
  • Lightning protection
  • Transducers
  • Power systems
  • Magnetic signature
  • Induction heating
  • Induction welding
  • Remote sensing
  • Eddy current brakes
  • Magnetic recording
  • Hysteresis brakes

For further details on Opera please contact us