Influence of interbar currents on the harmonic losses and skew in cage induction machines

This paper examines the influence of interbar currents in uninsulated cage rotors of induction motors. A previous paper by the authors developed a model for including interbar currents that reduces to a simple modification to the conventional chain equivalent circuit. This model is used to demonstrate that the locked rotor torque and full-load rotor losses can be particularly sensitive to the presence of interbar currents. The paper also explores the complex interaction between rotor skew and interbar current.