Load Analysis and Calculation Optimization of Horizontal Axis Wind Turbine Blades

doi:10.23940/IJPE.18.12.P19.30983108

Abstract

Abstract:

In order to reduce the cost of wind turbines and boost their operation reliability, the aerodynamic load of wind turbine blade is analyzed by taking the key parameters of wind turbine blade airfoil and operation as design variables. According to the actual wind force and wind shear theory, the Planck loss factor is introduced based on the existing algorithm. The axial induction factor and tangential induction factor were modified, and the optimization algorithm of aerodynamic load of wind turbine blade was deduced. The feasibility of the algorithm is verified by simulation.

Key words: wind turbine, blade, load, optimization algorithm, simulation

Junxi Bi, Chenglong Zheng, Hongzhong Huang, Yan Zhou, and Xiaoxue Li. Load Analysis and Calculation Optimization of Horizontal Axis Wind Turbine Blades [J]. Int J Performability Eng, 2018, 14(12): 3098-3108.

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Figures/Tables 14

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Province	Wind energy resources(MW)
Inner Mongolia	61780
Xinjiang	34330
Heilongjiang	17230
Gansu	11430
Jilin	6380
Hebei	6120
Liaoning	6060
Shandong	3940
Jiangxi	2930
Jiangsu	2380
Guangdong	1950
Zhejiang	1640
Fujian	1370
Hainan	640

r(m)	Torsion angle (^o)	Chord length (m)
4.5	20.00	1.630
5.5	16.30	1.597
6.5	13.00	1.540
7.5	10.05	1.481
8.5	7.45	1.420
9.5	5.85	1.356
10.5	4.85	1.294
11.5	4.00	1.229
12.5	3.15	1.163
13.5	2.60	1.095
14.5	2.02	1.026
15.5	1.36	0.955
16.5	0.77	0.881
17.5	0.33	0.806
18.5	0.14	0.705
19.5	0.05	0.545
20.3	0.02	0.265

Power	P=1.5MW
The rated wind speed	V=10m/s
Aerofoil	NACA4412 series
Blade length	R=3.2m
Blade number	B=3
Rated speed	n=20r/min
Cut - in wind speed	V₁=4m/s
Cut - out wind speed	V₂=25m/s
Air density	1.225kg/m³

No.	The wind speed (m/s)	Blade loading (KN)
1	5	40.44
2	10	241.56
3	20	220.23
4	30	194.98
5	40	162.45

No.	Thewind speed (m/s)	The torque of the blade (KN·m)
1	5	170.26
2	10	732.12
3	20	645.17
4	30	601.57
5	40	565.28