Optimization model for rotor blades of horizontal axis wind turbines

Abstract

This paper presents an optimization model for rotor blades of horizontal axis wind turbines. The model refers to the wind speed distribution function on the specific wind site, with an objective to satisfy the maximum annual energy output. To speed up the search process and guarantee a global optimal result, the extended compact genetic algorithm (ECGA) is used to carry out the search process. Compared with the simple genetic algorithm, ECGA runs much faster and can get more accurate results with a much smaller population size and fewer function evaluations. Using the developed optimization program, blades of a 1.3 MW stall-regulated wind turbine are designed. Compared with the existing blades, the designed blades have obviously better aerodynamic performance.

Wind Potential Assessment and Optimization of Wind Turbine Blade for Coastal Area of Jiwani Balochistan Pakistan

“…The speed of wind was measured on the monthly average speed at the height of 10 meters. Windmill requires a continuous wind at rated speed, for generation of power; but it is very difficult to maintain the steady state conditions due to the fluctuations in the wind speed [5]. In order to overcome this situation the wind speed at any height can be measured through the Hellmann exponent law as given below: where V (h) is the wind speed at the height, and V10 is the speed of wind at 10m, while α is the Hellmann exponent constant having value α = 1/7.…”

Design of the OffWindChina 5 MW Wind Turbine Rotor

“…Researchers and academics who have designed wind turbine blades in China include Liu et al [22,23], Gutierez [24], and Zhu et al [25]. Liu et al redesigned rotor blades for a 600 kW [22] and for a 1.3 MW [23] stall-regulated wind turbines situated on Nan'ao Island in Guangdong Province. Gutierez [24] designed a 2 MW variable-speed variable-pitch wind turbine in collaboration with Ming Yang Wind Power for a site in Guizhou Province in the southwest of China.…”

Optimization of Small Scale Wind Turbine Blades for Low Speed Conditions

“…BEM analysis and CFD methods were used to determine the effect of design changes [3], [4] performed to maximize power production of specific wind speed, rotor speed, and rotor diameter. In this research, XFOIL was used to provide sectional aerodynamic loads [5].…”