Patent ID: 7259491
Filing Date: 2007-08-21
Classification: H02J,H02M,H02P,Y10S

Abstract:
1. A rotating asynchronous converter for connection of AC networks with equal or different frequencies, wherein the converter comprises a first stator connected to a first AC network with a first frequency f 1 , and a second stator connected to a second AC network with a second frequency f 2 , wherein the converter also comprises a rotor which comprises two electrically and mechanically connected rotors, which are concentrically arranged with respect to said stators, and which rotates in dependence of the first and second frequencies f 1 , f 2 , and said converter further comprises an auxiliary device connected to said rotor, and in that at least one of said stators includes at least one winding forming at least one uninterrupted turn, said winding including a current-carrying conductor comprising a plurality of insulated conductive elements and at least one uninsulated conductive elements, and a magnetically permeable, electric field confining insulation covering surrounding the conductor, including an inner layer having semiconducting properties in electrical contact with the conductor, an insulation layer surrounding the inner layer in intimate contact with the inner layer and an outer layer having semiconducting properties surrounding the insulation layer and in intimate contact with the insulation layer, wherein each layer constitutes substantially an equipotential surface.