This tutorial shows how to use SimLab to run electromagnetic analysis with Flux solver for electric motors. The studied device, a brushless AC embedded permanent magnet motor, includes the following elements:
In this tutorial, four typical transient magnetic analyses are defined to evaluate the motor performance:
The cogging torque is computed with a multi-position simulation and no current. The multi-position is simulated with a transient application at constant speed. The speed is chosen to be 1/6 rpm which corresponds to 1 mechanical degree per second.
The back electromotive force EMF is computed with the speed of 1000 rpm and external circuit connections. It corresponds to the motor being in generator mode at no load. The computed back EMF allows determining the current control angle.
The motor is driven with a 3 phase sine current and running at constant speed. The simulated motor performances are used to compute shaft torque.
The dynamic behavior of the motor starting is simulated with a proposed current control strategy. The winding is supplied in current depending on the rotor position.
All files corresponding to this example are accessible with this link (for different version) :
Step to follow :