scholarly journals Numerically and Experimentally Verified Design of a Small Wind Turbine with Injection Molded Blade

Processes ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 776
Author(s):  
Byunghui Kim ◽  
Sang-June Park ◽  
Seokyoung Ahn ◽  
Myung-Gon Kim ◽  
Hyung-Gun Yang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Power Systems ◽  
Wind Turbine ◽  
Wind Power ◽  
Offshore Wind ◽  
Power Coefficient ◽  
Manufacturing Method ◽  
Small Wind Turbine ◽  
Verification Methods ◽  
Wind Power Systems

Although mega-watt class onshore and offshore wind power systems are used to generate power due to their cost-effectiveness, small wind power systems are important for household usages. Researchers have focused on aerodynamic characteristics as a conceptual design from their previous studies on Archimedes spiral wind turbines. Here, we verified the design of a small wind turbine AWM-750D (100 W capacity) via both numerical simulation and experimentation. We used commercial code ANSYS CFX for numerical simulation and compared turbulence models and surface roughness for determining the performance. To obtain reliable and robust blades, we analyzed the effective manufacturing method with Moldflow. Through a test with an open-suction type atmospheric boundary layer wind tunnel, we varied wind speed from 4.0 m/s to the rated value of 12.5 m/s and obtained 106 W, equivalent to a power coefficient of 0.205. In addition, we compared the numerical and experimental power vs. rotational speed and found the former is 6.5% lower than the latter. In this study, we proved that numerical simulations can act as design verification methods to predict wind turbine performances and reliable manufacturing. Through our research, we provided the prototype of a small wind turbine with 100 W to act as an efficient electric power supplier for households and also the stable manufacturing process for complex spiral blades using injection molding.

The Method of Suppress the Output Power Fluctuations of Off-Grid Wind Power Systems

2012 ◽  
Vol 608-609 ◽  
pp. 479-482
Author(s):  
Xuan Liu ◽  
Yan Jia ◽  
Fei Zhao
Keyword(s):  
Energy Storage ◽  
Power Systems ◽  
Wind Turbine ◽  
Wind Power ◽  
Output Power ◽  
Energy Storage Devices ◽  
Power Fluctuation ◽  
Power Fluctuations ◽  
Wind Power Systems ◽  
The Impact

As the wind is random and intermittent, the output power of the wind turbine will also be changing, causing the generator output power fluctuation and voltage fluctuation, flicker, and early deterioration of battery. In order to improve the stability of the off-grid power systems, power quality, and better to protect the energy storage devices, the paper analyzes the main factors of the impact of fluctuations in output power from the off-grid wind power systems and energy storage technology to mitigate the off-grid wind turbine power fluctuations.

Understanding Wind Power Systems

2015 ◽  
Author(s):  
Scott Valentine
Keyword(s):  
Power Systems ◽  
Wind Turbine ◽  
Wind Power ◽  
Vertical Axis ◽  
Horizontal Axis ◽  
Power Development ◽  
Electricity Grid ◽  
Wind Power Systems ◽  
Main Components ◽  
Wind Power Development

All of the above statements represent prominent objections to wind power development. For the most part, these statements are premised upon small truths that have been exaggerated by wind power opponents in order to generate public opposition. The intent of this chapter is to try and separate fact from fiction in order to give the reader a better technical understanding of the true hurdles faced by nations that embark on ambitious wind power development programs. Although a technical understanding of wind power systems is not necessary to understand the case studies presented in this book, enhanced technical understanding will help the reader better understand the possibilities and limitations of the technology. This chapter begins by describing the basic components of a wind power system before exploring how technical choices made in regard to system components and site location influence generation costs. From this technical foundation, the discussion will shift to the stochastic (fluctuating) nature of wind power and examine existing solutions for smoothing power fluctuations. This will provide the reader with a better understanding of the potential of wind power systems to replace fossil fuel electricity generation technologies. In concluding sections of this chapter, an attempt will be made to separate truth from fiction in regard to community and environmental impacts commonly attributed to wind power systems. Hopefully, by the end of this chapter, the pros and cons associated with wind power development will be better understood. There are basically two main wind turbine designs—vertical axis and horizontal axis. Vertical axis wind turbines (VAWT), which can resemble egg beaters placed on towers, are not widely used for electricity generation, so this section will focus on the main components of horizontal axis wind turbines (HAWT). The main components of a wind turbine includes the rotor blade; the nacelle (which houses the gearbox, generator, and yaw motor); the tower upon which the wind turbine is placed; the foundation which anchors the tower to the ground; the control system and transformer (usually located at the base of the tower), which transforms the collected energy into electric current that can be delivered to the electricity grid; and the electrical conduits that connect the wind turbine to the electricity grid.

Discuss Hydrogen Production in Jiangsu Province Using Non-Grid-Connected Offshore Wind Power

2013 ◽  
Vol 291-294 ◽  
pp. 2102-2108
Author(s):  
Sai Yu Shi ◽  
Fei Cheng ◽  
Mohanmed Nayel
Keyword(s):  
Hydrogen Production ◽  
Population Density ◽  
Power Systems ◽  
Wind Power ◽  
Fossil Fuel ◽  
Jiangsu Province ◽  
Offshore Wind ◽  
Offshore Wind Power ◽  
Advantages And Disadvantages ◽  
Wind Power Systems

Jiangsu is one of the most prosperous provinces in China with the highest population density but a shortage of fossil fuel. However, wind energy is recognized as a sustainable resource which is abundant in Jiangsu Province. Even so, the fluctuation of wind power, offshore and non-grid-connected wind power systems are required to manage this fluctuation. In addition, hydrogen production using wind power is a new idea to increase the contribution of wind power. According to the current situation of Jiangsu Province and wind power technology in China, there are both advantages and disadvantages to the method of hydrogen production in using non-grid-connected offshore wind power.

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