WIND TURBINE GENERATOR HAVING A DETECTION UNIT FOR DETECTING FOREIGN OBJECT INSIDE ROTOR AND OPERATING METHOD THEREOF
First Claim
1. A wind turbine generator comprising:
- blades;
a rotor hub to which the blades are fixed;
a rotating shaft which is connected to the rotor hub and rotates with the rotor hub;
a sensor which is arranged inside the rotor hub and detects a foreign object inside the rotor hub;
a brake device which stops rotation of the rotating shaft; and
a controller which controls the brake device to stop the rotation of the rotating shaft when the sensor detects the foreign object.
1 Assignment
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Accused Products
Abstract
In order to provide a wind turbine generator and an operation method of the wind turbine generator which is not subjected to damages caused by foreign objects inside a rotor hub, the wind turbine generator comprises blades, a rotor hub to which the blades are fixed, a rotating shaft such as a main shaft and a coupling being connected to the rotor hub and rotating with the rotor hub, a FO detection sensor arranged inside the rotor hub for detecting a foreign object inside the rotor hub, a brake device such as a pitch control unit and a parking brake for stopping the rotation of the rotating shaft, and a controller for controlling the brake device to stop the rotation of the rotating shaft when the FO detection sensor detects the foreign object.
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Citations
6 Claims
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1. A wind turbine generator comprising:
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blades; a rotor hub to which the blades are fixed; a rotating shaft which is connected to the rotor hub and rotates with the rotor hub; a sensor which is arranged inside the rotor hub and detects a foreign object inside the rotor hub; a brake device which stops rotation of the rotating shaft; and a controller which controls the brake device to stop the rotation of the rotating shaft when the sensor detects the foreign object. - View Dependent Claims (2, 3, 4, 5)
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6. An operating method of a wind turbine generator including blades, a rotor hub to which the blades are fixed, a rotating shaft which is connected to the rotor hub and rotates with the rotor hub, a sensor which is arranged in the rotor hub and detects a foreign object inside the rotor hub, and a brake device which stops rotation of the rotating shaft, the operating method comprising the steps of:
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detecting the foreign objects in the rotor hub by the sensor; and when the foreign object is detected by the sensor, stopping rotation of the rotating shaft by the brake device.
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Specification