Method and system for early fault detection in a wind turbine generator
AssigneeØrsted Wind Power A/S
InventorsMathias Baekdal MATHIASEN, Hans Agger HOUGAARD
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Abstract
A method and system for early fault detection in a wind turbine generator (7) is provided. A vibration signal of noise produced by the generator is received. A periodic signal component related to the number of rotor bars of a rotor (11) of the generator (7) is identified in the vibration signal, and a potential fault in the stator of the generator is identified based at least in part on a change in characteristic of the periodic signal component over time.
Claims15
A method for early fault detection in a wind turbine generator, the method comprising:
- receiving a vibration signal produced by the generator;
- identifying in the vibration signal a periodic signal component related to the number of rotor bars of a rotor of the generator;
- and,
- identifying a potential fault in the stator of the generator based at least in part on a change in characteristic of the periodic signal component over time.
An early fault detection system for a wind turbine generator, comprising:
- a vibration sensor for receiving a vibration signal produced by the generator;
- an early fault detection module configured to identify in the vibration signal a periodic signal component related to the number of rotor bars of a rotor of the generator, and identify a potential fault in the stator of the generator based at least in part on a change in characteristic of the periodic signal.
A sensor for an early fault detection system in a wind turbine generator, comprising:
- a receiver for receiving a vibration signal produced by the generator;
- and
- a processor configured to identify in the vibration signal a periodic signal component related to the number of rotor bars of a rotor of the generator, and identify a potential fault in the stator of the generator based at least in part on a change in characteristic of the periodic signal.
Dependencies are inferred from the claim text.