Design of Robust Controllers for Load Reduction in Wind Turbines - Wind Turbine Control and Monitoring - page 113

Bode Diagram

From: a Tss (m/s 2 ) From: M tilt (Nm) From: M yaw (Nm)

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-250

0

-50

-100

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0 0 0

10 10 10

Fre q uenc y (Hz)

Fig. 5.13 Bode diagram of the individual pitch H ? control

Fig. 5.14 Diagram of the individual pitch control strategy

0
@

1
A

a Tss ð k Þ
M tilt ð k Þ
M yaw ð k Þ

x ð k þ 1 Þ¼ A ipc1 x ðÞþ B ipc1

0
@

1
A

ð 5 : 18 Þ

!

a Tss ð k Þ
M tilt ð k Þ
M yaw ð k Þ

b tilt ð k Þ
b yaw ð k Þ

¼ C ipc1 x ðÞþ D ipc1