Nonlinear Cointegration Approach for Condition Monitoring of Wind Turbines

Figure 4

Experimental wind turbine data showing the nonlinear relations between wind speed and other operational parameters: (a) generator speed versus wind speed; (b) generated power versus wind speed; (c) generator temperature (front part) versus wind speed; (d) gearbox temperature versus wind speed.

(a)

(b)

(c)

(d)