Transient 2D with Motion solver

This solver includes coupling to the mechanical equations of motion, so that the movement of a component of a device (e.g. the rotor in an electrical machine or the plunger in an actuator) is accurately simulated. The mechanical effects include viscous friction, inertia, mass, springs, and gravitation, as well as constraints on movement imposed by mechanical end stops, and arbitrary load forces specified as a function of position, speed, and time.

The Transient 2D with Motion solver re-meshes only the region surrounding the moving component. Re-meshing this relatively small and simple region is quick, and with this approach, no additional constraint equations need to be solved, which keeps solution times short and memory requirements low.

The electric circuit elements which are available in the Time-harmonic and Transient solvers are also available in Transient 2D with Motion. This means that the device can be current or voltage driven and the circuit may include resistors, capacitors, and inductors in series and/or parallel configurations. In addition, position-controlled switches and a commutator element are available. Thus a switch on transient in an electrical machine may be simulated for any point in the ac cycle and the resulting run-up curve for the device determined. Alternately, the speed of a motor can be fixed and the effects on the torque and excitation systems found. As with all MagNet components, a device in Transient 2D with Motion can be fully parameterized and its operation scripted through a Visual Basic interface - thus complete design exploration and optimization can be implemented.

Typical applications for the Transient 2D with Motion solver includes electrical machines (claw-pole, induction motors, switched reluctance, brushed and brushless DC), actuators, levitation systems, braking systems, magnetic bearings, loudspeakers, and electromechanical shakers.