Northern Power Systems, Inc.

Adam R Olsen

Trevor H Cole

Garrett Lee Bywaters

Daniel P Costin

Etienne Hancock

An apparatus and method for cooling the rotor in an electromechanical machine such as a wind turbine generator is disclosed. Fluid cooling passages may be formed in the rotor, defined at least in part by a support member for magnets mounted on the rotor. Cooling fluid intake may be through the stator surrounding the rotor.

Method and apparatus for rotor cooling in an electromechanical machine

A method and system for attaching a service device to a wind turbine of a wind power unit, using the wind turbine to rotate the service device into one or more service positions, and using the service device to perform servicing on the wind power unit. In some embodiments, a blade of the wind turbine is removed and the service device is mounted in its place. In other embodiments, the service device is mounted to a device mount approximately in a saddle region between adjacent blades. In one example, the service device is a crane. In another example, the service device is a stator module installation/removal tool.

Method and system for servicing a horizontal-axis wind power unit

A rotor-stator structure including plural bumper elements that may employ synthetic sliding bearing surfaces, mounted to the stator, and designed to contact a machined surface on the rotor if generator structural deflection occurs during operation. During normal operation, the bearing surface is not in contact with the machine rotor. If extreme loads are imposed on the rotor or stator structures, or other issue like bearing failure, causes the air gap to close, the bumper elements will 'touch down' on a machined surface on the rotor to maintain a minimum air gap.

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East Corinth, VT, United States of America

Adam R Olsen