Multipolar double fed induction generator with overturned rotor

This paper concerns the design and practical application of the multipolar induction generator which can be applied to small power directly driven wind generators (1 - 30 kW). All the windings of this generator are placed on the stator. The overturned rotor is tooth-like without windings on it. The stator is placed inside the rotor. This construction helps to reduce the weight of the generator for about 15 - 17% comparing with conventional design.