Patent ID: 8183724
Filing Date: 2012-05-22
Classification: H02K

Abstract:
1. An electric generator which includes mechanisms for generating electrical power from the motor torque provided by a wind turbine rotor, and an external housing comprised of a cylindrical casing ( 23 ) and side shields ( 25 ), wherein the cylindrical casing and the side shields of said external housing are made of cast iron with a plurality of embedded conduits configured to form a plurality of refrigeration circuits ( 31 , 41 ) for the generator with routes for entry and exit ( 33 , 35 ; 43 , 45 ) of refrigeration liquid to and from an exterior of the generator, wherein said plurality of refrigeration circuit conduits included a rectangular refrigeration conduit that helicoidally embedded in said cylindrical casing ( 23 ) with the entry and exit routes at the ends of the circuit.