Improved Parametric Representation of im from FEM for More Accurate Torque Predictions

Paper in proceeding, 2022

In this work, an updated methodology to determine the parameters of three-phase induction machines (IMs) is developed and presented. The goal of this determination is for a better representation of machines for the further applications of the parameter-based control system operated with different stator flux linkage levels, such as automotive applications. First, the theory of the T-form model (TFM) and the inverse Γ-form model (IGFM) are reviewed. The former review becomes the brick of the following interpretation of the developing methods for identifying these parameters. Moreover, a 2D electromagnetic finite element method (FEM) model of a 15kW IM is utilized to demonstrate the strength of the methodology on a real machine. Lastly, a comparison of results using the conventional test and the newly proposed method is presented, showing improvement.