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Flywheel Energy Storage Systeems

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This FES unit describe the working and application of Flywheel energy storage systems. For more details contact sengar.avinash@outlook.com

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Flywheel Energy Storage Systeems

  1. 1. FLYWHEEL AS A ENERGY STORAGE DEVICE By:Avinash Sengar Enroll. No.- 383/10 DEPARTMENT OF ELECTRICAL ENGINEERING
  2. 2. INTRODUCTION  Flywheel energy storage (FES) works by accelerating a rotor (flywheel)to a very high speed and maintaining the energy in the system as rotational energy.  During extraction, principle of conservation of energy is being followed.  It is designed in which the flywheel device saves and release energy when necessary.
  3. 3. BASIC DIAGRAM
  4. 4. MAIN COMPONENTS • FES stores energy by constantly spinning a compact rotor in a low-friction environment. • Rotors made of high strength carbon fiber filaments, and spinning at speeds from 20,000 to over 50,000 rpm. • Magnetic bearings are sometimes used instead of mechanical bearings. • The efficiency in the chamber is enhanced by the creation of a rough vacuum.
  5. 5. APPLICATIONS
  6. 6. Flywheel in battery powered bus- FLYBUS
  7. 7. Other Applications  In 2013 Volvo announced a flywheel system fitted to the rear axle of its S60 sedan.  Wind Turbines.  Rail vehicles.  Rail electrification.  Uninterrupted power supplies.  Pulse power.  Amusement rides.  Pulse power
  8. 8. Grid energy storage Beacon Power opened a 20 MW, (5 MWh over 15 min) flywheel energy storage plant in Stephentown, New York in 2011.
  9. 9. Merits of FES unit      Highly efficient, Non-polluting. Reliable, Long life. Easily and inexpensively maintained, and safe. Much higher charging and discharging rate. Able to cyclic discharged to zero energy without degrading  The storage capacity is independent of temperature fluctuations.  Much higher energy storage efficiencies.  High power output.
  10. 10. Demerits of FES unit • Current flywheels have low specific energy. There are safety concerns associated with flywheels due to their high speed rotor and the possibility of it breaking loose & releasing all of it's energy in an uncontrolled manner. • Flywheels are a less mature technology than chemical batteries, and the current cost is too high to make them competitive in the market.
  11. 11. References http://en.wikipedia.org/wiki/Flywheel_energ y_storage http://www.beaconpower.com/products/ab out-flywheels.asp http://news.nationalgeographic.com/news/ energy/2011/2/110223-electric-gridflywheels-compressed-air/

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