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  2. Small wind turbine - Wikipedia

    en.wikipedia.org/wiki/Small_wind_turbine

    A 1 kW micro windmill installed in the suburbs of Lahore, Pakistan. Small wind turbines, also known as micro wind turbines or urban wind turbines, are wind turbines that generate electricity for small-scale use. These turbines are typically smaller than those found in wind farms. Small wind turbines often have passive yaw systems as opposed to ...

  3. Microgeneration - Wikipedia

    en.wikipedia.org/wiki/Microgeneration

    Domestic microgeneration technologies include: photovoltaic solar systems, small-scale wind turbines, micro combined heat and power installations, biodiesel and biogas. A small Quietrevolution QR5 Gorlov type vertical axis wind turbine in Bristol, England. Measuring 3 m in diameter and 5 m high, it has a nameplate rating of 6.5 kW to the grid.

  4. Regenerative braking - Wikipedia

    en.wikipedia.org/wiki/Regenerative_braking

    Regenerative braking is a two-step process involving the motor/generator and the battery. The initial kinetic energy is transformed into electrical energy by the generator and is then converted into chemical energy by the battery. This process is less efficient than the flywheel. The efficiency of the generator can be represented by:

  5. Wind-powered vehicle - Wikipedia

    en.wikipedia.org/wiki/Wind-powered_vehicle

    Wind-powered vehicles derive their power from sails, kites or rotors and ride on wheels—which may be linked to a wind-powered rotor—or runners. Whether powered by sail, kite or rotor, these vehicles share a common trait: As the vehicle increases in speed, the advancing airfoil encounters an increasing apparent wind at an angle of attack ...

  6. Gravity battery - Wikipedia

    en.wikipedia.org/wiki/Gravity_battery

    A gravity battery is a type of energy storage device that stores gravitational energy —the potential energy E given to an object with a mass m when it is raised against the force of gravity of Earth ( g, 9.8 m/s²) into a height difference h. In a common application, when renewable energy sources such as wind and solar provide more energy ...

  7. Ram air turbine - Wikipedia

    en.wikipedia.org/wiki/Ram_air_turbine

    Ram air turbine. A ram air turbine ( RAT) is a small wind turbine that is connected to a hydraulic pump, or electrical generator, installed in an aircraft and used as a power source. The RAT generates power from the airstream by ram pressure due to the speed of the aircraft. It may be called an air driven generator ( ADG) on some aircraft.

  8. Vaneless ion wind generator - Wikipedia

    en.wikipedia.org/wiki/Vaneless_ion_wind_generator

    Sustainable energy. A vaneless ion wind generator or power fence is a device that generates electrical energy by using the wind to move charged particles across an electric field . Ion wind generators are not commercially available, though working prototypes and proofs of concept have been created.

  9. Wind turbine design - Wikipedia

    en.wikipedia.org/wiki/Wind_turbine_design

    An example of a wind turbine, this 3 bladed turbine is the classic design of modern wind turbines Wind turbine components : 1-Foundation, 2-Connection to the electric grid, 3-Tower, 4-Access ladder, 5-Wind orientation control (Yaw control), 6-Nacelle, 7-Generator, 8-Anemometer, 9-Electric or Mechanical Brake, 10-Gearbox, 11-Rotor blade, 12-Blade pitch control, 13-Rotor hub

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