Vibration Control Of Wind Turbines : A Comparative Study Essay

Wind turbines have altered the way that we get our energy. Wind turbines are used to harness wind power and turn into electricity. They are comprised of usually 2 or 3 blades that are connected to a shaft that was attached to a generator which then turns into electricity. Although we now generally use it to produce electricity, wind energy was originally used in the form of windmills to do chores and housework. Because of the rapid increase in the use of wind turbines, it has added jobs and changed the way we get energy.

The cost for renewable energy is halted for an endanger species. The text "Divided Over Wind Turbines" by Maria Glod is discussing how the windmills should not be built because the low number of bats that are already left will die off due to the wind turbines. In the other text, "District Court Conclusion" by the court is how the decision was made in favor of the bats. Lastly in "The Indiana Bat Decision: a Dangerous Precedent for Alternative Energy?by Brandon Middleton discuss how this person feels about the court's decision was wrong because of the renewable energy source should not be turned down because of bats. The windmills farms are huge 389-foot windmills able to turn the Appalachian breezes into energy that can be used in daily life sounds easier than done because the case is where the wind turbines are placed happens to be where the Indiana bats hibernate in limestone caves within several miles of the wind farm. The concerns of the court decision are debatable due to the fact both arguments are a logical one for the bats and the other for the possibility of renewable energy.

In today’s world, there are many different sources of energy that can be used to generate electricity. When you think of the word energy, what comes to mind? For me, I think of having the ability to do wok, whether it is moving an object from one place to another, compressing a gas, producing heat, sound, or light, and having the ability to power something. One very important source of energy that has become very popular in todays world for a means of power generation is wind energy, wind power, or also known as a wind turbine.

​The main purpose of the wind energy is to create energy source which is pollution free and come with a reasonable price. The wind energy used in wind turbines are increasing their demand and becoming popular in the green energy world. Since the rebirth or rapid growth of wind energy took place from early 1980. The growth of the industry has been more than expectations. As all the good things the wind energy poses certain negative impacts of having high maintainer cost. Repair and data collection should be monitored regularly of the turbine to get the idea of placing a new wind energy plant or to maintain the old one. This paper explains the modeling of Wind Energy Conversion Systems and their technologies which is used for the generation of wind power and control strategies of the conversion system.

Another concern that comes along with wind energy is the amount of noise produced by the turbines. People living nearby wind farms may be bothered by the noise of the turbines, although, for the most part the noise of the mechanical system is usually masked by the wind itself. Since the turbines only run when the wind is blowing, there is no “still” noise.

An example of wind application in an engineering project is the United States Air Force Memorial. During the process of designing the memorial, engineers were confronted to make the concrete, triangular-shaped spires to become more slender. Slender structures tend to delicate on wind loadings. When there is high wind, the structures will experience an aerodynamic instability which is known as 'galloping'. To solve the galloping phenomena, those engineers invented a 'ball-in-box' impact damping system to vanquish the phenomenon. Each damper contains spheres of lead coated in stainless steel to place in a steel box lined on the inside with synthetic rubber. The damping system was built in each spire. To make the spires moving, small collisions

In our world today, energy is needed to work our technologies and help us complete daily task. With a growing population, the demand for energy is very high. Harnessing the energy could sometimes be difficult and dangerous to ourselves and the environment. Fossil fuels and nuclear power are the most used types of energy in the United States. The problem with this is that the energy is limited, and harmful to the environment. Wind energy is an alternative renewable energy source that counters this problem, and is rapidly emerging in our world.

As long as you don’t have much problems with the factors shown above, you can build yourself a wind turbine. To construct these things, the wind turbine consists of three basic parts: the tower, the nacelle, and the rotor blades. The tower itself is either a steel lattice tower almost the same as an electrical tower, or a steel tubular tower with an inside ladder to the nacelle. The first step in constructing the wind turbine, is to have a tower. The steel parts are usually made off site in a factory, however, they are usually built on site. The parts are bolted together, and as usual, keeping the tower horizontal until placement. Next is the fiberglass nacelle is installed. It’s stuff inside such as the main drive shaft, gearbox and blade pitch and yaw controls are created and mounted onto a base frame at a factory. The nacelle is a strong, hollow shell that has the inner workings of the wind turbine. Towers do not have “guys,” which are cables used for support. They are mostly made out of steel that has been coated with zinc alloy for

Wind turbines make kinetic energy and transform it into mechanical energy. This big device is mainly used at power plants. Turbines can range from small too big. There are

The renewable energy from wind energy has become a popular method of producing energy. When the world realized fossil fuel emission are harmful to our atmosphere, many countries started to look toward renewable energy sources. In recent years the U.S. has given tax incentives and tax breaks for using a renewable energy sources. The U.S. has become the leaders in using wind energy for a renewable resources. Even though wind power energy is growing in popularity among government officials and the general public, however wind energy has some problems and challenges in providing energy to the world, both in the short and the long term. Wind energy used alone is not the approach

Sound and visual impact are the two-main public health and community concerns associated with operating wind turbines. Bastasch, van Dam, Søndergaard, Rogers (2006), states that most of the

Founded in 1981, Wind Technologies (WT) has been a supplier of many different varieties of weather related radar and instrumentation. In 1986 the company focused its production on wind profiling radar systems that measure wind and atmospheric conditions. Management of Wind Technologies felt as though this consolidation would position the company as an industry leader in the future in a market that would have little competition. This consolidation was mainly due to being purchased by Vaitra, a high technology European firm. Vaitra made it possible for Wind Technologies to focus its operations mainly due to its large financial support. Since commercial sales were less than stellar since the buyout Vaitra’s financial support

Tethered airfoil HAWP devices have 3 main components: 1.) the airfoil or lifting surface, 2.) the tether, and 3.) the anchor point or base station [1]. One of the benefits of these devices over conventional ground based wind turbines is that the material footprint of each device is significantly less than their ground based counterparts for the same amount of power generated [6]. These devices do require slightly different materials than HAWTs for example, however they are not significantly more complex, which should allow them to penetrate the market in a similar fashion to how ground based turbines did and became widespread. The first main component of these HAWP devices, the airfoil or lifting surface, could be made of a variety of materials. If the device uses a parasail as in [1] [4] [6] [7], then it is likely to be made of conventional parasail materials, namely nylon. If instead of a parasail, an airfoil is used, then such an airfoil will likely be made out of similar materials to airplane wings. Airplane wings and thus airfoils, can be made out of a variety of different materials, ranging from wood and cloth used on old WWI planes, to aircraft grade aluminum used in modern airliners, to composite materials found in today’s gliders. Any of these materials could be potentially viable for the airfoil, as different materials are suited to different properties of the airfoil [1]. If the airfoil also has onboard power generation in the form of propellers that spin motors,

The objective of recent experiments is to study and experimentally quantify the unsteady loads on a horizontal axis turbine blade from turbulent forces with similar operating conditions in which the boundary layer is maintained along the edges of the blades. Therefore a new data set was to be obtained providing bending moment responses to oscillatory frequencies and velocity amplitudes. By performing a series of multi-frequency and half sinusoidal experiments may demonstrate whether single frequency forcing could be applied to model these more general responses2. A recent article titled “Blade Loading on Tidal Turbines for Uniform Unsteady Flow2” performs the experiment with valid materials and methods in order to better predict this phenomenon of turbulent loads and fatigue life along with the results of the experiment.

In advanced applications, the design of some structures, such as those in spacecraft, jet fighters and automobiles which require lightweight strength and have highly structural damping properties, is faced with great difficulty due to the fact that the decreased weight results in low rigidity and reacts with vibration characteristics. Vibration must be effectively controlled, otherwise it could be uncomfortable for humans, increase fatigue, cause instability and could result in damage to the entire system (Sharma et al., 2011). Tuned Vibration Absorbers (TVAs) are important engineering tools for vibration suppression. They can be passive, semi-active or active vibration control devices (Sun et al., 1995). Tuned Vibration Absorbers without