The influence of space harmonic field waves of the rotor on the torque-speed-characteristics of cage induction motors

摘要

The paper presents an algorithm to precalculate the torque-speed-characteristic of cage induction motors. Especially the reaction of the stator winding on space harmonics, which are generated by the rotor currents, is taken into account. Theinfluence depends on the connection of the stator winding into parallel paths and their distribution around the circumference. The paper shows simple formulas, which allow the integration of the algorithm into existing design software. The result of thecalculation has been verified with a 6-pole motor. The test results are in good accordance with the calculated torques.