New high voltage 2-pole concentrated winding and corresponding rotor design for induction machines

This paper presents a design of a two-pole high voltage induction machine with concentrated coils wound on twelve stator teeth. Using a combined wye-delta winding a magnetomotive force distribution with a low content of space harmonics is created. For suppression of still existing undesirable slot harmonics, a special interconnection of rotor bars is examined. In addition to the design with a finite element method, an analytical approach was made in order to verify the obtained results. Particular attention is paid to the following points: - Reduction of installation space - Reduction of production costs - Evaluation of currents and magnetic fields.