System simulation of a PMSM servo drive using the field-circuit coupling

In the development process of electrical drive trains, consisting of the motor, the power electronics and the control scheme, it is difficult to predict the exact machine and control behavior in combination with the converter. Therefore, system simulations with analytical machine models embedded in a circuit simulation environment are performed. To increase accuracy by paying attention to alternating machine parameters, such as saturation, a finite element model can be used instead of the analytical machine model. In this paper such a field-circuit coupling is applied to the simulation of a PMSM servo drive and the results are shown and discussed.