Biofuels have been around as long as cars have.

A biofuel is a fuel that contains energy from geologically recent carbon fixation. These fuels are produced from living organisms.

Generating Electricity from Wing Waves.

Wind turbines, like windmills, are mounted on a tower to capture the most energy. At 100 feet (30 meters) or more aboveground, they can take advantage of the faster and less turbulent wind.

Producing electricity from solar energy.

Solar energy is a free, inexhaustible resource, yet harnessing it is a relatively new idea. The ability to use solar power for heat was the first discovery.

Turbines catch the wind's energy with their propeller-like blades.

A blade acts much like an airplane wing. When the wind blows, a pocket of low-pressure air forms on the downwind side of the blade.

Solar energy may have had great potential

Solar technology advanced to roughly its present design in 1908 when William J. Bailey of the Carnegie Steel Company invented a collector with an insulated box and copper coils.

We have been harnessing the wind's energy for hundreds of years.

For utility-scale sources of wind energy, a large number of wind turbines are usually built close together to form awind plant.

Biofuels are produced from living organisms.

In order to be considered a biofuel the fuel must contain over 80 percent renewable materials.

Geothermal energy is the heat from the Earth.

Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma.

Geothermal heat pumps can tap into this resource to heat and cool buildings.

A geothermal heat pump system consists of a heat pump, an air delivery system (ductwork), and a heat exchanger-a system of pipes buried in the shallow ground near the building.

In the future, civilization will be forced to research and develop alternative energy sources.

Possession of surplus energy is, of course, a requisite for any kind of civilization, for if man possesses merely the energy of his own muscles, he must expend all his strength - mental and physical - to obtain the bare necessities of life.

Showing posts with label electromagnetism. Show all posts
Showing posts with label electromagnetism. Show all posts

Friday, September 19, 2014

Power Electronics Hec Solar Inverter Reaches 2Mw

Power Electronics Hec Solar Inverter Reaches 2Mw
Power Electronics is proud to announce the new available output voltages 420Vac, 440Vac, 460Vac that boost the HEC Solar inverter capacity to 2MW at 50oC.

A highly globalized Utility Scale Solar PV market is demanding smarter and more cost competitive solutions with the highest quality and reliability. The well-known HEC platform is part of the excellence solar European inverters and has been reformulated to provide higher output power keeping its outstanding features. EPCs and Developers can now take advantage of its lower price per watt to design and promote more cost competitive PV plants.

The new ratings are intended to become the most popular choice in key Solar Markets for the company under IEC standards. "This is a step forward in competiveness and reinforces our commitment with the Solar PV industry and players. Power Electronics is paving the future of the utility scale solar PV and will continue with this role in the outstanding solutions that are about to arriv"e" says David Salvo- CEO.

The HEC Solar inverter is available with one of the most extended offerings in control and protection accessories (PPC, FSDU and FSDK), as well as turnkey solutions (MV Outdoor Set and MV Station). An unbeatable offering and a unique philosophy Power ON Support, makes Power Electronics the right choice for worldwide utility scale PV plants.

La entrada POWER ELECTRONICS' HEC SOLAR INVERTER REACHES 2MW aparece primero en Power Electronics.

Origin: green-power-project.blogspot.com

Monday, July 7, 2014

What Happens When The Solar Power Goes Out

What Happens When The Solar Power Goes Out
With you get clear or all of your power from solar panels on your roof, what happens since a big wrap around rolls prepared and knocks out the power?

With the power goes out, grid-tied PV systems fuse off as thin, but not while they can't become adult electricity. The systems are programed to fly in a circle off carelessly for shield reasons. With the power goes out, electricity for those sections of the mesh are fuse off so that body can try to fix the issue. If PV systems resolve on, and lengthen to frontwards electricity prepared the chains still they are for instance repaired, you run the hazard of electrocuting the body.

The unwilling shut-off is to be found in the inverter. The inverter (to find out supervisor about how PV panels piece of work, control out our Astrophysical Pull 101 slip), in total to be found at that moment to your regulator, turns DC electricity inwards AC now so that it can be used by the home. The inverter is also the basic amount of net-metering. With the power to the mesh is fuse off, the inverter recognizes that it can no longer cause electricity from the mesh, and stops shut down DC electricity inwards AC now. In other idiom, still the exactly molecular process of converting solar energy inwards DC now cannot be turned off, the on its head can fly in a circle off your PV system's ability to become adult versatile electricity.

In the beforehand period of solar energy, this destined blunt no power might be full to your home in the example of a power outage. In the midst of improving technology, inverters are now for instance at no cost that can power clear of the appliances in the home. These inverters admit an external section inwards which you can force up to 1500 watts*. So the inverter is detached from the mesh, it pulls power straightforwardly from the PV system. Due to the separate of solar energy, a unyielding power supply cannot be dependable. If the evaluate of sunlight thrashing the panels fluctuates (due to billows, drivel, etc.) so character the power.

If one of your reasons for success a PV system was the contemplation that you would be able to bolster your ostentatious home occurrence in the hurry of a power outage, you may wish to perceive making an extra investment in a spare generator or a store spare system. So the upside to a spare power system is in evidence, near are downsides as well:

1." They are pricey." Generators robust and large acceptable to power a home can cost unlike thousand dollars. Batteries are also nicely pricey, and they countryside up a lot of halt. The burial spent on purchasing a spare power system negates virtually all of the burial you would admit saved investing in a PV system in the put the lid on location.

2. "They are commonly needless." Sense about how many times the power has over and done out in the subsequently appointment. Doubtless taking into account or bend, right? Now pull together that the power went out that many times the complete appointment and perceive how many years it would countryside for you to get your money's bring into play out of a spare system. This measure may be different for somebody, but for limit staff it character countryside too many years for the system's utility to make up for its cost.

3. "They are unarmed." If an hurry does begin where a spare system would be crucial for multiple period, perceive what type of hurry that may be: a swamp, a repentant blizzard wrap around, a tornado etc. Your spare system may not be everlasting acceptable to stomach these accomplishments. If it is damaged and rendered unusable, your burial would admit been time off spent on flashlights and candlesticks.

Happily, the power does not go off that often so near is no need to be significant about this outline any supervisor than you did since you were success your electricity from the mesh.

*Number may disagree by inverter custom and producer


Monday, December 24, 2012

Induction Generators

Induction Generators
AC electric motor acting as a generator No Way you say but its true, I'm including a link to a study done my the DOE U.S. Department of Energy An induction generator is a type of electrical generator that is mechanically and electrically similar to a polyphase induction motor. Induction generators produce electrical power when their shaft is rotated faster than the synchronous frequency of the equivalent induction motor. Induction generators are often used in wind turbines and some micro hydro installations due to their ability to produce useful power at varying rotor speeds. Induction generators are mechanically and electrically simpler than other generator types. They are also more rugged, requiring no brushes or commutators. Induction generators are not self-exciting, meaning they require an external supply to produce a rotating magnetic flux. The external supply can be supplied from the electrical grid or from the generator itself, once it starts producing power. The rotating magnetic flux from the stator induces currents in the rotor, which also produces a magnetic field. If the rotor turns slower than the rate of the rotating flux, the machine acts like an induction motor. If the rotor is turned faster, it acts like a generator, producing power at the synchronous frequency. In induction generators the magnetising flux is established by a capacitor bank connected to the machine in case of stand alone system and in case of grid connection it draws magnetising current from the grid. It is mostly suitable for wind generating stations as in this case speed is always a variable factor.

DOE STUDY PDF and here is another nice on about control Control of a Polyphase Generator



Credit: renewable-technologies.blogspot.com