The motor considered here consists of permanent magnet arrays in the form of a steel rotor containing 12 permanent magnets and a steel stator with another 12 permanent magnet. The magnets are polarized in an alternating fashion radially inwards and outwards from the axis of the cylinder. The array setup provides linear and rotational coupling from the outer array (stator) to the inner array (rotor). The rotor is driven to turn by magnetic forces resulting from the permanent magnets.
By creating multiple studies, the user can change the materials, current, number of turns, and the geometry of each part. EMS allows the user to keep the same assembly file and associate each study with a design table position. All these features are very helpful for designers and can be used to determine the motor parameters responsible for optimizing the motor performances. In this example, four configurations were created to compute the torque applied on the rotor due to the magnetic fields.