Contra rotor wind turbine system using a hydraulic power transmission device
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United States of America Patent
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Jan 3, 2017
Issued Date -
N/A
app pub date -
Dec 10, 2014
filing date -
Jun 9, 2014
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Abstract
The present invention provides a system for a contra rotor wind turbine system comprising of dual aerodynamic rotors composed of plurality of either radially extended blades or axially extended helically contoured blades. The blades on the upwind or the outer rotor are set to spin in the first direction about the outer shaft, while the blades on the downwind or inner rotor are set to spin in a second direction about the co-axially mounted center shaft. Each rotor drives a digitally controllable positive displacement pump unit to convert the kinetic energy of the rotor to the fluidic potential energy. The potential energy of each rotor is compounded to achieve net potential energy. The net potential energy is stored in a fluidic reservoir and used by a hydraulic motor to drive an electrical generator. The hydraulic pump and the motor units are provided to maintain uniform rotational speed and torque.
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