Modelling and Simulation for Magnetic Flux Distribution in Induction Motors

P. Pao-la-or, S. Peaiyoung, T. Kulworawanichpong, and S. Sujitjorn (Thailand)


Induction motors, Finite element method, Magnetic fluxdistribution


This paper presents a mathematical model of magnetic fields in induction motors. This demonstrates the use of the finite element method (FEM) for analysing magnetic flux distribution in an induction machine operating with steady-state rotor movement. Exclusively, non-linearity of stator and rotor cores is taken into account and the problem of non-linearity is therefore solved by using the Newton-Raphson method. A three-phase, four-pole 5-hp squirrel-cage induction motor with double layer winding is situated as a test case example to evaluate its use. As a result, the magnetic flux distribution through the cross sectional area of the induction motor can be graphically described using flux line plot.

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