Pitch Controller Design of Wind Turbine Based on Nonlinear PI/PD Control

Table 2

Nonlinear gain a.

Wind speed (m/s)	Pitch angle (°)	Nonlinear gain a1	Nonlinear gain a2	Calculated value of a	Truth value of a
11	0.769	−131258	−185437	−158348	−158348
12	2.21	−50628	−52895	−51761	−51760
12.1	2.53	−25142	−54975	−40058	−40057
12.2	2.94	−25702	−38593	−32147	−32147
12.3	3.43	−24971	−30670	−27821	−27821
12.4	3.98	−35384	−16564	−25974	−25974
12.5	4.55	−28240	−22884	−25562	−25562
13	7.3495	−29605	−29670	−29638	−29638
14	12.0014	−24736	−58744	−41740	−41740
15	15.6949	−44415	−65296	−54856	−54856
16	18.7385	−87893	−50143	−69018	−69018
17	21.309	−94964	−73747	−84355	−84355
18	23.518	−97211	−104702	−100956	−100956
19	25.44	−91846	−145894	−118870	−118870
20	27.136	−90789	−185643	−138216	−138216
21	28.64	−143466	−174484	−158975	−158975
22	29.9874	−230630	−131854	−181242	−181242
23	31.1999	−148312	−261735	−205023	−205023
24	32.2981	−244074	−216678	−230376	−230376
25	33.298	−357896	−156795	−257346	−257346