A New Method of Characteristics Analysis for 3-Phase Induction Motor

Abstract

Generally speaking, the characteristics of induction motors (IM) are analyzed using the equivalent circuit with d-q transformation. Though this method is simple, the magnetic flux distribution in stator and rotor is defined as sinusoidal wave. Therefore, the equivalent circuits become complex relatively for the high frequency components and the transient state. For detailed analysis, the finite elements method (FEM) is adopted. FEM can consider the influence of the skewed rotor bars, slots and skin coefficient However, the calculation time for high frequency components and transient analysis isvery long. Therefore, we willpropose anew method of characteristics analysis for IM. The proposed method analyzes magnetic flux simply based onthe construction of IM. It can analyze transient and steady state and high frequency components regardless of any kind of sources. The influence of the skewed rotor bars and slots can also be considered simply. In this paper, the analysis manner, the comparison with the experimental results, the results of proposed method and d-q transformation are described.