High Efficiency Variable-Pitch Vertical Axis Wind Turbine (VAWT)

Patent Status: 

Patent Filed

Indian Patent Applicaton No: 

904/DEL/2015

Patent Category: 

Overview: 

An efficient method to convert wind kinetic energy to rotational energy for electricity generation

Variable pitch Vertical Axis Wind Turbine showing novelty features

Key Features: 

  • Allows the VAWT to adapt and perform optimally for a wide range of wind speeds and turbine rotational speeds
  • Up to 100% increase in efficiency when compared to conventional VAWTs
  • Auto-startup of wind turbine at wind speeds as low as 1.5-2 m/s
  • Allows the change in length of the ground link, which allows variable amplitude pitch changes
  • Obliterates the use of the central bar or rod connecting the top and bottom hubs and about which the turbine rotates
  • Ensures application of pitch input at both the ends of the turbine resulting in uniform blade pitching
  • Low footprint, easy installation and maintenance

Applications: 

  • High rise societies, shopping malls, government and private complexes, hospitals, schools etc. which have significant potential of tapping wind energy due to their higher and large rooftop area.
  • Hilly areas with abundant wind energy potential, but lack of round-the-clock power supply

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