Abstract: A wind generator includes: a nacelle; a hub rotatably carried by the nacelle and including at least a pair of wind turbine blades; and an electricity producing generator including a stator and a rotor carried by the nacelle. The rotor is connected to the hub and rotatable in response to wind acting on the blades to rotate the rotor relative to the stator to generate electricity. A cooling system is carried by the nacelle and includes at least one ambient air inlet port opening through a surface of the nacelle downstream of the hub and blades, and a duct for flowing air from the inlet port in a generally upstream direction toward the hub and in cooling relation to the stator.

Abstract: An electrical machine to facilitate transporting fluids through a pipeline is provided. The machine includes a stator, a rotor magnetically coupled to the stator, and a housing enclosing the rotor and the stator. The housing includes a wall that facilitates channeling a first fluid at a first pressure through a portion of the housing. The machine also includes a stator enclosure defined by at least one wall that facilitates maintaining a second fluid within the stator enclosure. The stator enclosure is positioned within the electric machine housing. The stator enclosure has at least one wall that substantially isolates the second fluid from the first fluid such that only the second fluid is in flow communication with the stator. The stator enclosure has at least one wall that facilitates heat transfer from the second fluid to the first fluid. At least a portion of at least one of the stator enclosure walls is configured to facilitate equalizing the first pressure and the second pressure.

Abstract: Electrical machines, such as electrical power generators, motors and the like, include an especially adapted cooling system for removing heat generated in the electromagnetic core during operation. The cooling system preferably includes a number of thermally conducting laminations interposed between predetermined ones of the core laminations that form the electromagnetic core. The thermally conducting laminations thereby establish a preferential solid path of thermal conductance so that heat generated in one region of the core may be conducted to another region of the core. Preferably, the thermally conducting laminations are formed of a nonmagnetic material. A thermal collector having at least comparable thermal conductivity properties as the thermally conducting laminations is provided at the othe region of the core so as to collect heat conducted thereto by the thermally conducting laminations. Coolant passageways are defined by the thermal collector so that circulation of a coolant fluid (e.g.