Vestas Wind Systems A/s

Lars Brink Christensen

Peter Mongeau

Marek Swies

Nicolaj Olesen

Paw Rosenvard

An electrical power generating assembly for a wind turbine. The electrical power generating assembly comprises a gearbox comprising a gearbox output shaft, a generator comprising a rotor that is coupled to the gearbox output shaft; and a current measuring module located between the gearbox and the generator. The current measuring module comprises: an electrical pickup mounted to the electrical power generating assembly, wherein the electrical pickup includes an electrical contact that engages with a slip ring associated with the rotor. The current measuring module further comprises: a first current measuring device mounted with respect to the electrical pickup to detect current flowing at least through the electrical pickup; and a second current measuring device mounted with respect to the electrical pickup to detect current flowing through at least a component associated with the gearbox output shaft.

Stray current detection in wind turbine generators

An electrical power generating assembly () for a wind turbine (). The electrical power generating assembly comprises a gearbox () comprising a gearbox output shaft, a generator () comprising a rotor () that is coupled to the gearbox output shaft; and a current measuring module () located between the gearbox () and the generator (). The current measuring module () comprises: an electrical pickup () mounted to the electrical power generating assembly (), wherein the electrical pickup () includes an electrical contact () that engages with a slip ring () associated with the rotor (). The current measuring module further comprises: a first current measuring device () mounted with respect to the electrical pickup () to detect current flowing at least through the electrical pickup; and a second current measuring device () mounted with respect to the electrical pickup () to detect current flowing through at least a component associated with the gearbox output shaft.

A yaw system of a wind turbine includes a plurality of motors, each motor being coupled to the nacelle for applying torque to the nacelle; a plurality of controllers, one controller for each of the motors, each controller being configured to control the respective motor and coupled to at least one other controller to transmit operation information thereto; and a yaw system controller configured to transmit control information to at least one controller of the plurality of controllers. At least one of the controllers is configured to control the respective motor based on at least one of the control information and the received operation information from the at least one other controller. Communication between the controllers of the respective motors can allow a faster response of the yaw system to yaw the nacelle according to a change of wind direction.

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Skanderborg, Denmark

Lars Brink Christensen