Dynamic electromagnetic torque of high power synchronous motors — A review

The paper studies the effects of magnetic asymmetry and saliency on the behavior of synchronous machines in dynamic regimes. Their dynamic operation is related with mechanical and electromagnetic inertia parameters. It is shown that it is possible to derive mathematical models that can take in account the basic processes of machine and offer results regarding the electromagnetic and mechanical stresses, within a controlled area of practical service. The simulation considers an 8000 kW synchronous motor. The dynamic electromagnetic torque was specially analyzed. The qualitative results offer information about the specific dynamic operation of a high power machine. The results of quantitative determinations are of essential interest in the design stage, for predetermination of parameters and construction of the motor.