The optimization and the application for the wind turbine power-wind speed curve. (September 2019)

• Record Type: Journal Article
• Authors: Fan, Zhixin; Zhu, Caichao
• Is Part Of: Renewable energy. Volume 140(2019)
• Page Start: 52
• Page End: 61
• Publication Date: 2019-09
• Subjects: Wind turbine -- Low-wind-speed -- P-v curve -- Transmission system -- Operation mode; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.renene.2019.03.051
• Languages: English
• ISSNs: 0960-1481

Abstract

Abstract: An optimized wind turbine power-wind speed curve ( P - v curve) was presented in this paper to solve the problems in the low-wind-speed regions like the large wind speed variation and the low wind turbine efficiency. When the wind speed was lower than the cut-in wind speed, the operation mode of the wind turbine was changed by the extra power supplied by the motor excitation source to keep the wind turbine operating. The application condition of the optimized P - v curve was derived and calculated. The effects of various wind speeds on the powers and the power generation of the wind turbine were analyzed by comparison with and without the improvement. The results indicated that the prolonged working period, the improved efficiency of the wind turbine and the incremental power generation were induced by the usage of the optimized P - v curve. The cut-in wind speed was declined by 42.8%. The power generation was enhanced by 73.4% at the actual wind condition of some wind field. The motor power was augmented with the huge amplitude of the wind speed. Compared with the traditional P - v curve, the optimized P - v curve was more suitable for the lower average and larger amplitude of the wind speed. Highlights: An optimized wind turbine power-wind speed curve was presented for capturing more low-wind-speed wind energy. The application condition was derived and calculated. The cut-in wind speed was declined, the power generation was enhanced by applying the optimized P - v curve. An improved transmission structure was present for applying the optimized P - v curve to the double-fed wind turbine.