Vestas V90-3MW Wind Turbine Gearbox Health Assessment Using a Vibration-Based Condition Monitoring System

Table 1

Specifications of the test’s rig gearbox.

Ratio	1.5 : 1
Pinion teeth	18
Gear teeth	27
Forcing frequencies	Orders
Input frequency ()	1x
Output frequency ()	0.67x
Gear mesh frequency (GMF)	18x