Hello,
im Using COMSOL 4.1 and I have got heavy problems simulating the cogging of a synchronous machine. The calculated Torque using the stress tensor is correct. But if I use the method of virtual work something ist going terribly wrong . If I use a stationary solver and add "Parametric" to the solver the magnetic energy has the wrong periodic time and is not sinusoidal (the cogging torque is more or less sinusoidal). Using the timedependant simulation tends to result in a sinusoidal form after a ramp.
What can I do to improve the calculation of the total magnetic Energy? And why are the results so different?
im Using COMSOL 4.1 and I have got heavy problems simulating the cogging of a synchronous machine. The calculated Torque using the stress tensor is correct. But if I use the method of virtual work something ist going terribly wrong . If I use a stationary solver and add "Parametric" to the solver the magnetic energy has the wrong periodic time and is not sinusoidal (the cogging torque is more or less sinusoidal). Using the timedependant simulation tends to result in a sinusoidal form after a ramp.
What can I do to improve the calculation of the total magnetic Energy? And why are the results so different?