General Electric Company

Jivtesh Garg

Bharat S Bagepalli

Patrick Lee Jansen

Aniruddha Dattatraya Gadre

Ralph James Carl, Jr

Fulton Jose Lopez

James Michael Fogarty

Ronghai Qu

William Dwight Gerstler

James Patrick Lyons

Samir Armando Salamah

Emil Donald Jarczynski

Gary Randall Barnes

James Patrick Francis Lyons

Piet Moeleker

Charles Gardner Bouchard, Jr

Bharat Sampathkumaran Bagepalli

Gary R Barnes

Charles G Bouchard Jr

Partick Lee Jansen

The machine includes a rotor with an inner rotor core and an outer rotor core and a double-sided stator with an inner stator side and an outer stator side. The double-sided stator is concentrically disposed between the inner rotor core and the outer rotor core of the wind turbine generator. The double-sided stator is configured to enable at least a portion of magnetic flux to be shared between the inner stator side and the outer stator side. An example of a particularly useful embodiment for the machine includes a ship propulsion motor.

Electrical machine with double-sided lamination stack

A wind turbine generator includes a stator having a core and a plurality of stator windings circumferentially spaced about a generator longitudinal axis. A rotor is rotatable about the generator longitudinal axis, and the rotor includes a plurality of magnetic elements coupled to the rotor and cooperating with the stator windings. The magnetic elements are configured to generate a magnetic field and the stator windings are configured to interact with the magnetic field to generate a voltage in the stator windings. A heat pipe assembly thermally engaging one of the stator and the rotor to dissipate heat generated in the stator or rotor.

Methods and apparatus for cooling wind turbine generators

A wind generator includes: a nacelle; a hub 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.

Wind turbine generators having wind assisted cooling systems and cooling methods

The machine includes a rotor with an inner rotor core and an outer rotor core and a double-sided stator with an inner stator side and an outer stator side. The double-sided stator is concentrically disposed between the inner rotor core and the outer rotor core of the wind turbine generator. The double-sided stator is configured to enable at least a portion of magnetic flux to be shared between the inner stator side and the outer stator side. Examples of particularly useful embodiments for the machine include wind turbine generators and ship propulsion motors.

A machine comprises: a rotor comprising (a) axially extending coils, each coil extending into an endwinding region, (b) a plurality of cavities between the coils in the endwinding region, and (c) a plurality of spacers situated between the coils. Ventilation grooves having an inlet and an outlet are defined in the rotor with at least some of the coils including at least one of the ventilation grooves. The ventilation grooves provide at least one path for gas flow from at least one first cavity to at least one of (i) a second cavity or (ii) a different portion of the first cavity.

Thermal management of rotor endwinding coils

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Schenectady, NY, United States of America

Jivtesh Garg