The Wind Turbine Design and Test (original) (raw)
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2014
As energy demand around the world is increasing day-by-day, wind energy is the good option for energy generation. The most common type of wind turbine is horizontal axis wind turbine (HAWT), but there exist other types. In this paper four different wind turbines are considered, three vertical axis wind turbines (VAWT): the Savonious, the Darrieus, the Giromill or H-rotor; and the HAWT. This study deals with the comparative study of these four different types of wind turbines from the most important aspects including design, construction, maintenance, blade profile. In this study it has been found that VAWT is more advantageous over HAWT in several aspects. Furthermore, different economic, environmental, technical and social issues related with wind energy are discussed. Keywords— Darrieus, Giromill, HAWT, H-rotor, Savonious, VAWT.
Design comparison of wind turbines for low wind speed
ICONIET PROCEEDING
Wind energy is one of the potential renewable energy, but the applications have to beadjusted to the available wind characteristic in the area. In Indonesia, the wind speed is inaverage not very high, only around 4 m/s. Therefore the wind turbine design have to be adjustedfor usage in Indonesia. In this research, two wind turbine designs are compared. One design isof the form Horizontal-Axis Wind Turbine (HAWT) and the other is of the form Vertical-AxisWind Turbine (VAWT). Both designs are optimized for wind speed of 4 m/s. The comparisonsare done using computer simulation software OpenFOAM. The result shows VAWT design canproduce similar power with smaller turbine dimension than the HAWT design.
The analysis of wind blade on the performance of Vertical Axis Wind Turbine
IOP Conference Series: Materials Science and Engineering
The long-term energy crisis is one of the biggest issues of this century that needs to be tackled to ensure a prosperous future for coming generations and wind energy is one of the energy sources that grows rapidly and most promising renewable energy. Vertical Axis Wind Turbine (VAWT) is the best option for small wind turbine project and suitable for low average wind speed environment. In this project, experiment had been carried out to study the effect of wind blade number on the Savonius wind turbine performance at different wind speeds and a comparison had been made to choose the best performance between 2, 3, 4, 5 and 6 blades wind turbine. A small Savonius wind turbine prototype, PicoScope, Digital Anemometer, Digital Tachometer and other equipment were used for this purpose. A PicoScope software with a hardware device had been used to create an oscilloscope and spectrum analyser on the PC. The experiment was carried out in an open room space to acquire a close condition to the real environment. The performance results were analysed and Malaysia's average wind speed had been used as the guideline for the comparison. It can be deduced that 5 blades rotor gives the best performance compared to the 2, 3, 4 and 6 blades rotor. At wind speed 6.1 m/s, 5 blades rotor produced optimum mechanical power output at 260 mW, power coefficient of 0.109 (10.9 %), torque at 0.12 mN.m and tip speed ratio at 8.28.
Investigation on the effect of rotor angle and wind velocity on the Savonius wind turbine
INTERNATIONAL CONFERENCE ON BIOLOGY AND APPLIED SCIENCE (ICOBAS), 2019
Indonesia is a tropical country that has an abundant source of wind energy. This potential is generally used to drive wind turbines. However, the electrical energy produced by wind turbines is still low. If it involves the hypothesis that optimal energy is produced from an effective and efficient turbine design, the purpose of this study is the finding of the Savonius wind turbine performance from variations in rotor angle and wind velocity. This study used a quantitative approach using pre and real experimental method with randomized block design type. The implementation of the study was divided into two stages namely pre-experimental test and final experimental test. Variation of the angle used in this study divided into two groups namely group I with 0°, 30°, 60°, 90° and group II with 0°, 20°, 40°, 60°, 80°. The variations of winds speed used in this study are 3, 5, 7, and 11 (m/s). The results showed that the performance of this modified Savonius turbine was dependent on the angle position. The top group was the angle position which always showed the performance both in the wind position 5 m/s and 7 m/s and produced the best shaft rotation performance, output power, torque and work efficiency from other angular positions.
WIND TURBINE DESIGN AND ANALYSIS
2020
Wind turbines are widely used among renewable energy systems. Particularly in Turkey in the Aegean and Marmara coast it is suitable for use because of high wind potential. In our study, design and analysis were done for a wind turbine to be used around Kocaeli / Izmit. In this context, wing geometry was determined, energy obtained and dimensioned, geometry designed in three-dimensional from CAD program, FSI analysis was done. Reducer, brake mechanism and tower designs were made. Deformation analysis for reducer and thermal analysis for brake disc were completed. In the study results, the expected energy yield was obtained in the wind turbines with average similar dimensions, and the results of the design and analysis converged. Keywords: Renewable Energy, Wind, Wind Energy, Wind Turbine, CFD Analysis, FSI Analysis, Gearbox, Brake System, Steady State Thermal Analysis
DESIGN AND CONSTRUCTION OF VERTICAL AXIS WIND TURBINE
The principle objective of this project is Rural Electrification via hybrid system which includes wind and solar energy. Our intention is to design a wind turbine compact enough to be installed on roof tops. So we decided to design a vertical axis wind turbine (VAWT) over Horizontal Axis Wind Turbine (HAWT). Advantages of VAWT over HAWT are compact for same electricity generation, less noise, easy for installation and maintenance and reacts to wind from all directions. The wind turbine designed to generate electricity sufficient enough for a domestic use. The electricity generated will be stored in the battery and then given to the load. This project emphasizes on electrification of remote areas with minimum cost where load shading still has to be done to meet with demand of urban areas.
International Journal of Energy Economics and Policy
Though Malaysia is blessed with a lot of natural resources, still it mainly depends on fossil-fuels for electricity generation. Due to this dependency, among the different polluting agencies, the electric power sector ranks second in the country's statistics. So as to reduce the pollution from them and to reduce the dependency on the depleting fossil-fuels, Malaysia is very keen on promoting renewable energy based electricity generation. Following the Government's renewable energy policy and subsidies, several renewable energy attempts were made and only the solar PV energy systems have had a good start; however, the continued development from the start is questionable because of the high capital cost involved and the unattractive energy conversion efficiency. Few attempts on the proven, cost-effective wind energy systems were carried out and the net outcome is not encouraging due to the low-speed scenario in Malaysia. As per a few successful studies on wind speed assessments, there are attractive sites for wind turbine based electricity generation not with high speed higher capacity turbines, but at low speed small capacity wind turbines. To promote wind energy in Malaysia and to attract global investors, this research aims at low capacity wind turbines suitable for low wind regimes as in the Malaysian context. The proposed constant speed-small horizontal axis wind turbines exhibited encouraging values of annual energy production, power coefficient and capacity factors promising a successful start of wind energy in Malaysia.
IOP Conference Series: Materials Science and Engineering, 2019
Institut Teknologi Kalimantan (ITK) is one of the new university where located in the middle of the forest in Balikpapan. The power source of electrical energy only comes from PLN. As the increasing of students, the demand of electric power also increase, then development of new energy is needed. Based on BMKG data in 2018, the average wind speed in Balikpapan ranges from 5 km / h-18 km / h. Based on the wind speed data, a horizontal axis wind turbine (HAWT) will be made. This HAWT is using three blades with a several variation of the angle of attack (AoA) to determine the efficiency level of the wind turbine. The variations of attack angles are 10°, 15°, 20° and 25°. Beside that, the wind turbine testing is carried out at several wind speeds of 3.8 m/s, 4.3 m/s, 5.8m/s. The experiment results show that the largest electric power is generated in the test of the horizontal axis wind turbine with variation of 250 attack angle at 5.8 m/s that is equal to 118.7 mW
DESIGN, ANALYSIS & POWER GENERATION THROUGH VERTICAL AXIS WIND TURBINE
Abatract : This project by using Savonius rotor wind turbine adapted for household electricity generation. The design process and justification of the new machine will be described. The innovative technology turbine collects wind energy and converts it into electricity, which in turn produces a output more than 12 volt which is used to charge one heavy duty battery. As a result, the home is served simultaneously by the wind turbine and the utility. In this project, a small electricity generator has been specifically designed for household installation as well as for industrial use also. We are using a savonius rotor. This type of rotor (which is of the vertical axis variety) is chosen instead of a horizontal axis machine due to its simplicity and reliability. The S-rotor has been designed using an analytical method then analysis method is used for checking the blade sustainability capacity on different boundary conditions and finally model is fabricated on which output voltage is at very high rate as multiple DC generator arrangement is used for producing power. The generator runs with the help of spur gear which is mounted on rotating shaft. The design process, analysis and validation will be described in this project.
Australian Journal of …, 2011
This paper presents an analysis of the wind speed characteristic in Kangar, Northern Malaysia. The Weibull distribution function is applied to analyze the wind speed characteristic and used to calculate the wind power generation potential. The wind power and energy as function of tower height are presented and analyzed in this paper. The result shows that during fifteen days (1 st March to 15 th march 2011), the average hourly wind speed is 2.252126 m/s, based on the analysis of the Weibull distribution function, the wind speed of 2.03 m/s has the highest probability density, exactly is 37.99%, it is an important information to choose a suitable wind turbine for a wind power generation. According to the wind turbine applied in this research, when the wind speed is below 2 m/s or above 16 m/s, the output power is zero and the rotor can not be loaded. At its nominal speed of 8 m/s, the power output is at the rated value of 500 W. During the observation condition, on the 11 March 2010, the average wind turbine voltage is 7.1 V during the day time and 1.3 V during the night time. On the 12 March to 15 th March 2010, the wind speed gives a big energy potential to generate the wind turbine, therefore the average wind turbine voltage 31 V during the day time and 20.3 V during the night time.