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The Transient Magnetic module is designed for analysis of transient processes in electromagnetic fields at low and medium frequencies. It includes features of both AC and DC magnetic modules. Transient Magnetic analysis used in QuickField combines DC magnetics with time stepping. Therefore all features of DC Magnetic analysis are fully applicable to the Transient Magnetic module.
Transient Magnetic analysis overcomes the limitations of both AC and DC formulations - it allows simulation of dynamic systems with non-linear materials and permanent magnets under variety of conditions, including sinusoidal and pulsed current excitation. However, Transient Magnetic analysis requires calculation for many time steps, therefore it is more time consuming than corresponding AC or DC magnetic problem solution.
The Transient magnetic module is applicable to studies of switch on/off modes, failures, AC excitation of devices with non-linear magnetic materials; pulses in power electronic equipment and variety of other processes and devices where AC or DC approaches don't work.
The transient magnetic field simulation can be coupled with electric circuit.
The Transient Magnetic module can be used to design and analyze electromagnetic devices, such as actuators, electromagnetic transducers, electric motors, magnetic shields, permanent magnets, and so forth.
Features of the Transient Magnetic module:
- Materials: Linear and nonlinear permeabilities
- Special utility for editing B-H curves
- Permanent magnets with linear or nonlinear demagnetization curves
- Distributed and concentrated currents
- Dirichlet or Neumann boundary conditions
- Special approximation functions for axisymmetric formulations that provide high precision near the axis of rotation
- Results: magnetic flux density, field intensity, potential, permeability, energy, self and mutual inductances, magnetic forces, torques, and other integral quantities
- Couplings: the magnetic forces can be used for stress analysis on any existing part (magneto-structural coupling); power losses can be used as heat sources for thermal analysis (magneto-thermal coupling)
See examples of Transient Magnetic problems:
Transient currents in the plate
Coil with ferromagnetic core
Line-to-line short circuit