Finite element dq-model for MTPA flux control of Synchronous Reluctance Motor (SynRM)

This article focuses on the modelling of SynRM including magnetic saturation and cross-saturation to obtain accurate dynamic simulations from models obtained by Finite Element Analysis (FEA). It is shown here that in the presence of nonlinear magnetic materials, the use of flux instead of current is of interest for both simulation and control design. From this observation, dynamic flux simulation model is obtained. The accuracy of the modelling is illustrated though the design of a Maximum Torque Per Ampere (MTPA) based flux control. Simulation results, close to the real SynRM obtained from FEA are conducted to validate the development and its practical usefulness.