Permanent Magnet Synchronous Machine Model for Real- Time Simulation

-This paper presents the implementation of a model for a permanent magnet motor on a real time digital simulator. The conventional interfaced model approach popular in some emt-type programs is shown to be inappropriate for real-time simulators, because it is more susceptible to numerical instability. The paper introduces an ‘embedded’ phase domain model which reduces numerical instabilities. Both the conventional as well as the embedded phase domain model models are shown to provide identical results in the steady state and transient situations; however the conventional model becomes unstable quickly if the time-step is increased. This paper also presents the application of this new model to simulate the machine using the evaluated inductances that have been evaluated by (FEM) method based modeling.