Analysis of axially non-uniform loss distribution in 3-phase induction motor considering skew effect

This paper discusses the phenomena of the axially non-uniform distribution of magnetic flux densities and losses in a 3-phase squirrel cage induction motor of which the rotor bars are skewed. A 2-dimensional complex finite el ement method taking account of the effects of the skewed rotor bars is util ized for the analysis of characteristics such as copper and iron losses and the loss distributions are examined. The summing up values of non-uniform losses resulted from the finite element characteristics such as copper and iron losses and the analysis are compared with measurement values.