Invention Grant
US09537371B2 Contra rotor wind turbine system using a hydraulic power transmission device
有权
Contra转子风力发电机组采用液压动力传动装置
- Patent Title: Contra rotor wind turbine system using a hydraulic power transmission device
- Patent Title (中): Contra转子风力发电机组采用液压动力传动装置
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Application No.: US14565450Application Date: 2014-12-10
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Publication No.: US09537371B2Publication Date: 2017-01-03
- Inventor: Kari Appa
- Applicant: Kari Appa
- Agent Kari Appa
- Main IPC: H02K7/18
- IPC: H02K7/18 ; F03D1/02 ; F03D11/02 ; F03D9/00

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.
Public/Granted literature
- US20160172934A1 CONTRA ROTOR WIND TURBINE SYSTEM USING A HYDRAULIC POWER TRANSMISSION DEVICE Public/Granted day:2016-06-16
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