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When was wind power first used? - Renewable Energy

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Technically, wind was first used to power sailboats thousands of years ago. Heron of Alexandria used wind to power his windwheel in the 1st century, which was the earliest record of using wind to power a machine

Posted on Jan 15, 2013

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Posted on Jan 02, 2017

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Whats the best renewable energy source?


The beat renewable energy sources are those sources of energy which can be renewed easily and which is eco-friendly in nature.
Some of the best sources of renewable energy are:
1. Solar energy: The most efficient renewable energy source. The sun rays are absorbed by the solar cells on the solar panel and later it is used as electricity.
2. Wind energy: Used in turbines to make them run and generate electricity.
3. Water energy: Water has been used in hydroelectric plants to produce electricity.
4. Nuclear energy: Nuclear fission is the main source of energy today. The energy generated by this fission is used to produce electricity.

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Jan 04, 2017 | Green Living

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Laser Lidar Guidance Adds Power to Wind Turbines The wind industry may soon be...


Laser Lidar Guidance Adds Power to Wind Turbines

The wind industry may soon be dependent on a different kind of environmental awareness that has more to do with lasers than ecology.
A new laser pointer 100mw system that can be mounted on wind turbines allows them to prepare for the wind rushing toward their blades.

The lasers act like sonar for the wind, bouncing off microscopically small particulates and back to a fiber optic detector. That data is fed to an on-board processor that generates a three-dimensional view of the wind speed and direction. Subtle adjustments in the turbine blade's angle to the window allows it to capture more energy and protect itself in case of strong gusts.
The startup company that developed the Vindicator system, Catch the Wind, recently deployed a wind unit on a Nebraska Public Power District turbine. It increased the production of the unit (.pdf) by more than 10 percent, according to the company's white paper. If those numbers held across the nations' 35 gigawatts of installed wind capacity, the laser lidar (Light Detection and Ranging) sensors could add more than 3.5 gigawatts of wind capacity without adding a single additional turbine.
"This is what they call disruptive technology," said William Fetzer, vice president of business development for Catch the Wind. "There are roughly 80,000 to 90,000 wind turbines out in the world, and they don't have this technology."
Wind farms are only as good as their data. There have been revolutions in assessing wind resources over long time-scales, but the short-term gustiness of the wind has remained a problem.
Current wind turbines rely on wind-measuring instruments known as anemometers that are mounted to the back of the turbine's gear-housing unit, called a nacelle. The data from the wind is fed to a computer that optimizes the blades' configuration to capture the most energy from the wind.

In many cases, cup anemometers, which took their current form in the 1930s, are still used. They work well enough, but have to be positioned behind the blades, which subjects them to turbulence. And, importantly, they can only tell you how fast the wind was blowing after it passed. That doesn't help you with a freak gust of wind or any of the odd behavior that renewable energy developers have caught the wind exhibiting.
Fort Felker, director of the National Renewable Energy Laboratory's National Wind Technology Center, said he saw great potential in laser pointer 200mw lidar and similar sound-wave-based systems generally.
"Once you have a detailed knowledge of the coming wind, there are a lot of opportunities," said Felker told Wired.com.
While he estimates the amount of energy that could be captured is below Catch the Wind's 10 percent, he said the systems could really help reduce the wear-and-tear on machines caused by strong winds hitting improperly positioned blades.
"Researchers have already demonstrated that substantial reduction of loads is certainly possible," Felker said.
laser lidar, despite first being demonstrated for wind measurement in the 1970s, has been slow to catch on. The systems have been too expensive.
"Widespread deployment of the technique has so far been hampered by the expense and complexity of laser lidar systems," a 2005 NREL research report found. "However, the recent development of laser lidar systems based on optical fiber and components from the telecommunications industry promises large improvements in cost, compactness, and reliability so that it becomes viable to consider the deployment of such systems on large wind turbines."
Now, even the most venerable R&D testing group in the world, the Danish National Laboratory for Sustainable Energy's Ris?e wind outfit, is working on a turbine-mounted laser lidar system, though they only claim a 5 percent increase in electricity production.

Catch the Wind grew out of a small-business grant that the company's predecessor, Optical Air Data Systems, received from the U.S. military. They developed a laser lidar system for helicopters working in the dusty Iraq and Afghanistan terrain. The company developed their rugged and relatively lightweight laser lidar systems by marrying aerospace knowledge with emerging telecommunications tech like better fiber optic cables and laser pointer 300mw diodes.
Still, Catch the Wind may have a tough road ahead. The energy industry is notoriously risk averse. Besides, wind electricity in many places is already cheaper than wholesale electricity prices.
Erin Edholm, a representative for National Wind, a wind-farm developer that's put in more than 4,000 megawatts of turbines, said that the company's wind resource assessment team "has not used [laser lidar] or considered using it to date."
But that doesn't dim the hopes of Catch the Wind's Fetzer for the company's ultimate success.
"When you do disruptive technologies, it takes time," Fetzer said. "People don't believe that things are as bad as they are until they can see what we can do."
It helps that they don't need the wind turbine manufacturers to incorporate their technology to jump start their business. They've got what's known as a "bolt-on" solution, meaning it can be attached to existing turbines. They don't need manufacturers to incorporate their product to sell it to wind farms.
Still, some wind farmers may worry that the warranties they have on their turbines would be voided by adding a laser lidar system. Fetzer said Catch the Wind is working out the warranty issues.
General Electric, which is the largest wind turbine manufacturer in the United States, is not using or developing laser lidar specifically, either. Catch the Wind did recently sell one of their machines to a large, unnamed turbine manufacturer.
Though Catch the Wind is not discussing pricing for their products, Fetzer maintains that their customers will make their money back in the three-to-five year range that he says wind developers are looking for. The 2005 NREL report calculated a preliminary cost for a generic laser lidar system of less than $95,000, once production was up and running.
The development of controls for capturing the most energy from the wind has been a constant theme in wind energy research. But it's not always the company that develops the technology that reaps the rewards from its commercialization. Wind turbines in the 1980s struggled mightily to convert the wind's gusty capriciousness into steady rotary power.
At the time, the turbine's rotor had to turn at a constant rate. Researchers realized that their machines could operate over a larger range of speeds if the rotor could speed up or slow down in response to the wind, but they would need power electronics to translate the power into electricity suitable for the grid.

A multimillion dollar R&D program launched by laser pointer U.S. Windpower and the Electric Power Research Institute to commercialize a variable-speed rotor resulted in a mostly defective turbine design that helped push U.S. Windpower out of business. The variable-speed rotor went on to become a standard part of wind turbine designs.
Catch the Wind obviously is hoping not to suffer the same fate. They are exploring a variety of business models including sharing the revenue from the extra power they say their systems can generate. If they don't generate any more electricity, the wind turbine owner doesn't pay anything. If they do, Catch the Wind gets half the take.

on May 19, 2016 | Infiniter 2000 Green 532nm Laser Pointer

1 Answer

Waring blender switch wiring


most blenders throttle the power by using different taps inside the motor winding themselfs ., the switch just selects what tap to use and applies power to that winding , just three windings can produce multi speeds if used in combinations sorry no easy fix for switchs other than to make sure theres no food down inside them , i use a good electrical contact spray (CRC) down in them to make sure

May 01, 2014 | Waring Blenders

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Msi wind broken dc power connector port


1) http://www.bit-tech.net/hardware/laptops/2008/07/05/breaking-wind/1

2) http://www.radioshack.com/product/index.jsp?productId=2103245

3) http://www.laptoprepair101.com/laptop/2007/12/06/dc-power-jack-repair-guide/

[You don't need a Soldering Station though. Use a 25 Watt soldering iron, or so. Rosin core solder, Rosin flux paste, etc ]

4) http://laptopjacks.com/product/MSI-Laptop-DC-Power-Jacks.html

So, who is going to do the job?

Post back in a Comment.

Regards,
joecoolvette

Mar 14, 2013 | MSI Wind U100 Netbook

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How many countries are using wind power for commercial use?


83. denmark uses wind for over 25% of its power

Jan 15, 2013 | Renewable Energy

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Have B&S 7500 Vanguard Genset. No Output. Have checked windings as per info on this site. Applied 12Vdc direct to the brushes and get 160Vac output. There are black/red wires from brushes that go back...


Hi, a word of caution, use a 9volt battery instead of 12v to check the rotating field winding. The 12volts from a car battery or battery charger can burn out windings in a generator. I would say that your avr is pooched. There are 4 leads that go back to the windings in the generator from the AVR. Two of these are connected to the power output and two go to a separate winding in the generator. This is the exciter winding and this supplies power to the avr for the rotating field. The two to the power output are voltage reference only. If your generator has these exciter winding, you should check if you have voltage there with the 9 volts applied to the rotor. If you have voltage on the power output and not on the exciter, then the exciter is shot and your avr might not be. Try this first, if you could, could you take a picture of the windings at the back end of the generator, this will confirm for me what leads you have present.

Feb 15, 2011 | Briggs & Stratton Electrical Supplies

1 Answer

Do I have to wind the watch after I replace the battery? If so, how do I go about winding it?


No you don't have to wind this watch..it is a quartz movement powered by a battery...the only thing the crown is used for is resetting the time and date, you are probably thinking of a mechanical watch which is powered by a mainspring...:)

Oct 03, 2009 | Luminox Navy SEAL Dive 3901 Wrist Watch

1 Answer

10,000 watt generator 220 plug doesn't work


Most generators have several circuits incorporated within the windings. There are usually two 115v windings, one or two windings that produce power and sensing voltage for the regulator that supplies power to the armature (produces magnetic force) and sometimes a 12v winding to supply power to charge the battery. The two 115v windings power one 115v plug each and together power the 220v plug. Each outlet has a breaker and or ground fault. Since the 115v plugs are working indicates that the 220v plug must have an open/broken wire or faulty breaker. Easy to check, however you must open cover to wiring compartment and trace wires. Should be easy fix. You do not have to start engine to find broken wire. Use ohm meter instead. With engine off, Insert probes into 115v plug and obtain ohm reading. Then insert probes into second 115v plug and obtain similar reading. Look for same reading at the 220v plug (remember 2 circuits of 115v, ground and neutral). Good luck with your repair and email if you have other question.

May 09, 2009 | Electrical Supplies

2 Answers

Winding noise


Change the power steering fluid. Use the Mercon V tranny fluid (also used in the power steering system).

Feb 10, 2009 | 2005 Ford Five Hundred

1 Answer

Suzuki SE4000SED generator with no output


There was a day and time when generators were simple. There were no capacitors, regulators to control/adjust power to magnet or ground fault outlets. Winding getting hot indicates short, however could be bad capacitors. Rectifiers and capacitors must be removed from circuit to test properly. Here is a simple test that I use to find fault area. I use a small power supply (16v AC 1 amp like doorbell transformer) into the 110v outlet of generator. This should energize the armature magnet and actually produce voltage at commutator with brushes pulled off. You can slowly pull the starter rope to move the armature into a different positon the voltage will vary. If the ac windings are shorted there will be very little or no magnet. There is a seperate 110 v circuit at the 220v outlet to test (there are two 110v windings that make up the 220v outlet, one is also used for the 110v outlet). There is another winding that products voltage for the regulator that powers the magnet thru the brushes but I think that circuit is porbably working because of the heat in the windings. You might even have 110v power at the 220v outlet. As our parents told us over and over, be careful when working with electricity. Enjoy

Dec 06, 2008 | Electrical Supplies

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