An electromagnetic thermal model of a hybrid motor and a parametric study on different rotor geometries.

摘要

A hybrid electric motor from the 2004 Toyota Prius hybrid vehicle is modeled in a finite element analysis (FEA) software program. The motor is an eight pole, three-phase, permanent magnet, synchronous machine. The FEA computer model analyzes the electromagnetic and thermal fields within the motor. The motor model accounts for nonlinear, transient, and dynamic effects. The model results are compared to measurements from actual 1999 and 2004 Prius motors. Major motor losses including I 2R and core losses as well as the resulting temperature field are modeled. The model accurately represents these losses and temperatures.; A parametric study is then performed to compare eddy current strengths and locations with respect to the permanent magnets in different rotor geometries.