.Modelica.Magnetic.QuasiStatic.FundamentalWave.Examples.BasicMachines.SynchronousMachines.SMPM_MTPA

Information

This example investigates the maximum torque per amps (MTPA) of a quasi-static permanent magnet synchronous machine. The machines is operated at constant speed. The current magnitude is kept constant and the current angle is rotated from 0 to 360 degrees with the simulation period of one second.

In this simulation the angle is the following angles are calculated:

• phi_v = angle of voltage phasor
• phi_i = angle of current phasor
• phiphi_v - phi_i = angle between voltage and current phasor
• theta = rotor displacement angle
• epsilon = phi - theta = current angle

Simulate for 1 second and plot (versus angle epsilon):

• smpmQS.tauElectrical: machine torque
• smpmQS.abs_vs[1]: machine phase voltage magnitude
• phi: phase angle between voltage and current phasor

Note

The resistors connected to the terminals of the windings of the quasi-static machine model are necessary to numerically stabilize the simulation.