Research Article

Fault Detection of Wind Turbine Pitch System Based on Multiclass Optimal Margin Distribution Machine

Table 4

Some correlation calculation results 2.

Pearson correlation coefficientPitch angle 1U1 phase winding current (A)Rotor speedCurrent of pitch motor 1
Yaw angle 10.99998−0.60992−0.97406−0.83843
U2 phase winding current (A)−0.589540.998630.643570.51048
Pitch angle 20.99981−0.60992−0.97406−0.83843
Current of pitch motor 2−0.855050.539740.831720.91606