Contactless multipolar double-fed asynchronous generator for windmills

A multipolar contactless doubly-fed asynchronous generator is considered where the primary and secondary generation windings are arranged on the teeth of the stator, while the rotor is tooth-like and without windings. Analytical treatment of such a generator has been performed and the basic equations that allow the parameters and performance of the machine to be calculated in generation mode of operation have been obtained. The results of experimental investigations are presented for the physical model of the generator and comparison with the calculation data is given.