.HanserModelica.SynchronousMachines.SMR_MTPA

Information

Description

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:

• phiv = angle of voltage phasor
• phii = angle of current phasor
• phis = phiv - phii = angle between voltage and current phasor
• theta = rotor displacement angle
• epsilon = phis - theta = current angle

Note

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

Plot the following variable(s)

• smr.abs_vs[1] against epsilon: RMS phase voltage against current angle
• smr.tauElectrical against epsilon: electromagnetic torque against current angle
• phi against epsilon: phase angle between voltage and current phasor against current angle
• theta against epsilon: rotor displacement angle against current angle