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System and method for monitoring a wind turbine gearbox

  • US 8,364,424 B2
  • Filed: 07/30/2010
  • Issued: 01/29/2013
  • Est. Priority Date: 07/30/2010
  • Status: Expired due to Fees
First Claim
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1. A wind turbine gearbox monitoring system, comprising:

  • a plurality of sensors coupled to a wind turbine gearbox outputting at least one of vibration information and shaft speed information; and

    a controller coupled to the plurality of sensors and configured to output operating information identifying potential and actual damage within the wind turbine gearbox based on the vibration information and the shaft speed information, the controller converting the shaft speed information and the vibration information into a cycle domain signal, and performing an order analysis on the cycle domain signal, the order analysis providing information that identifies potential and actual damage within the wind turbine gearbox, wherein to convert the equal time vibration information into an equal circumferential position cycle domain signal using a tachometer pulse train signal, the controller is further programmed to divide the tachometer signal into a plurality of segments, each segment representing a different rotational position of a gearbox shaft.

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