A study on the performance simulation of interior permanent magnet synchronous motor for electric vehicle considering nonlinear parameters

Abstract

In this paper, we propose a simulation algorithm for driving characteristics of interior permanent magnet synchronous motor (IPMSM) for electric vehicle considering nonlinear parameters like d-axis and q-axis inductances as well as core loss. D-axis and q-axis inductances as well as core loss parameter are changed according to both current magnitude and current angle between q-axis and current axis because of nonlinearity of magnetic flux density in stator and rotor core. Therefor e, the calculation of d-axis and q-axis inductances with nonlinearity of magnetic flux density and core loss is performed by usi ng FEM. We can get precise driving performance of traction motor for electric vehicle adopting nonlinear d-axis and q-axis inductance table and core loss table.