Development of an Analytically Described Pitch Regulator for a Wind Turbine to Be Used for Grid Disturbance Studies

Table 1

Linearized lift and drag coefficient expressions for different angle of attack regions.

Angle of attack (𝛼)	Lift coefficient (𝑐𝐿)	Drag coefficient (𝑐𝐷)
−10°–10°	0.1092∗𝛼+0.4466	2.23𝑒^−4∗𝛼+0.0077
10°–18°	−0.0043∗𝛼+1.5293	0.0238∗𝛼−0.2076
18°–28°	−0.0597∗𝛼+2.5141	0.0238∗𝛼−0.2076
28°–45°	−1.08𝑒^−4∗𝛼+0.9029	0.0238∗𝛼−0.2076
45°–70°	−0.0164∗𝛼+1.6722	0.0238∗𝛼−0.2076