Improved Design for Driving Characteristics in Single Phase Induction Motor with Concentrated Winding

The distributed winding method is generally applied for induction motor to attain the sinusoidal flux distribution. However, in recent years, the concentrated winding method is being investigated as an alternative to lower the material cost of copper coils. To realize, the by-products of the concentrated winding induction motor such as the harmonic flux and the torque deterioration must be addressed. To restrain negative effects of harmonic flux distribution of concentrated winding, the skew of rotor conduction bar that is a very important design variable must be properly chosen. This study is focused on the optimal design of rotor bar´s skew and winding turns for concentrated winding induction motor. In this study, the control method of harmonic parasitic torque in concentrated winding induction motor is proposed and validated its practicality through the experiment.