US 2019/0186468 A1Published application

Wind turbine drive system and wind turbine

AssigneeNabtesco Corporation

InventorsOsamu NOHARA, Haruna OSAKO

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Abstract

A wind turbine drive system includes a plurality of drive devices, a state quantity detection unit, and a control unit. The plurality of drive devices are provided in a first structure (a nacelle), and a ring gear is provided in a second structure (a tower). Each of the drive devices includes a motor drive portion, a speed reducing portion, and a motor braking portion for braking the motor drive portion. The state quantity detection unit detects a load between a meshing portion of each of the drive devices and the ring gear. Based on the thus detected load for the each of the drive devices, the control unit controls at least one of the motor drive portion and the motor braking portion so as to reduce a degree of variation in the load among the drive devices.

Claims8

Dependent claims

A wind turbine drive system, comprising:

a plurality of drive devices provided in a first structure and including a meshing portion meshing with a ring gear provided in a second structure, the first structure and the second structure being configured to rotate relative to each other, each of the plurality of drive devices including:
a motor drive portion for outputting power;
a speed reducing portion for receiving the power transmitted from the motor drive portion;
and
a motor braking portion for braking the motor drive portion;
a state quantity detection unit for detecting, for each of the plurality of drive devices, a load between the meshing portion of the each of the plurality of drive devices and the ring gear;
and
a control unit for controlling the motor drive portion and/or the motor braking portion of each of the plurality of drive devices based on the load for the each of the plurality of drive devices detected by the state quantity detection unit, so as to reduce a degree of variation in the load among the plurality of drive devices.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/314,480Filed 7 Jul 2017
Priority: JP 2016-1359538 Jul 2016
Published: 20 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

F03D 15/00
Transmission of mechanical power
F03D 7/0204
The wind motors having rotation axis substantially parallel to the air flow entering the rotor: for orientation in relation to wind direction
F03D 7/0224
Adjusting aerodynamic properties of the blades: adjusting blade pitch
F03D 7/04
The wind motors having rotation axis substantially parallel to the air flow entering the rotor: automatic control; Regulation