IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0918060
(2009-02-26)
|
등록번호 |
US-8669671
(2014-03-11)
|
우선권정보 |
IL-189765 (2008-02-26) |
국제출원번호 |
PCT/IL2009/000217
(2009-02-26)
|
§371/§102 date |
20100818
(20100818)
|
국제공개번호 |
WO2009/107132
(2009-09-03)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
17 |
초록
▼
Pressurized hydraulic flow created in wind farms with wind driven pumps (wind-pumps) used for rated electric power production by means of hydraulic motors, or turbines, of constant speed and variable torque which actuate alternately and/or simultaneously rated electric generators as function of wind
Pressurized hydraulic flow created in wind farms with wind driven pumps (wind-pumps) used for rated electric power production by means of hydraulic motors, or turbines, of constant speed and variable torque which actuate alternately and/or simultaneously rated electric generators as function of wind power availability. Use of positive displacement pumps driven by rotors of fixed pitch blades for maximum capture of wind power enables the attainment tip-speed-ratio of rotors in the range of high power coefficient by means of the pressurized hydraulic flow of the wind farms. Another application of wind farms with wind driven pumps is for the creation of variable hydraulic flow of fixed pressure as function wind power availability which may be used for water elevation as well as for the desalination of salt water solutions by reverse osmosis.
대표청구항
▼
1. A system for continuous generation of rated electric power from a wind farm comprising: multitude of wind driven pump units; each comprising a rotor-driven pump through a shaft and a fixed ratio gearbox mechanism; with respective inlets and outlets of rotor-driven pumps connected in parallel to r
1. A system for continuous generation of rated electric power from a wind farm comprising: multitude of wind driven pump units; each comprising a rotor-driven pump through a shaft and a fixed ratio gearbox mechanism; with respective inlets and outlets of rotor-driven pumps connected in parallel to respective principle conduits of non-pressurized flow and pressurized flow; and a brake mechanism to stop rotor motion in case of high winds to avoid damage;multitude of hydraulic motors, or turbines, driven by pressurized hydraulic flow retrieved from said principle conduit of pressurized hydraulic flow through a valve means; with the respective inlets and outlets of said hydraulic motors, or turbines, connected in parallel to the respective principle conduits of non-pressurized flow and pressurized flow; with a shaft of each said hydraulic motor, or turbine, made to move at constant speed by a variable valve device which is actuated in response to monitored speed deviations of said shaft from a predetermined rated desired speed; and with conduits of non-pressurized hydraulic flow at the outlet of said hydraulic motors, or turbines, serving to recycle hydraulic flow back to the inlets said rotor-driven pumps of said wind-pump units through said principle conduit of non-pressurized flow;a valve means at an inlet and outlet of each wind driven pump to enable the temporary isolation of a specific wind-pump unit from the rest of the wind farm for maintenance and/or repair;a start up valve means to enable the initial build up of pressurized flow in said principle conduit of pressurized flow, with a minimum resistance to rotor motion, before such pressurized flow is diverted to the operation of said hydraulic motor(s), or turbine(s);one or more rated electric generators per each said hydraulic motor, or turbine, connected to said hydraulic motor, or turbine, by means of a gearbox of fixed ratio transmission and a clutch mechanism, whereby, said generators can be engaged, alternately or simultaneously, with the shaft of said hydraulic motor, or turbine, by a predetermined sequence as a function of wind power availability, thereby, enabling continuous generation of rated electric power over a wide wind regime;monitoring means of wind velocity and direction, hydraulic pressure and flow in hydraulic conduits; speed of hydraulic motors, turbines, rated electric power output of generators; andcomputer control means which determine the sequence of operations in the entire system whereby said hydraulic motor(s), or turbine(s), and rated generator(s) are actuated, alternately and/or simultaneously, to enable continuous rated electric power generation over a wide wind regime with high energy conversion efficiency due to attainment of rotor(s) speed(s) in the tip-speed-ratio range of high power coefficient. 2. A system for continuous generation of rated electric power from a wind farm according to claim 1 wherein: said rotor is a vertical rotor with fixed pitch angle blades for maximum capture of wind power, mounted on top of a structure elevated above ground level and made to follow wind direction by means of a wind tacking tail or by a motor driven tracking mechanism;said pump of wind-pump units of a positive displacement type with fixed geometric replacement per revolution, for pressurizing water or water solutions;said gearbox mechanism in rotor-driven pump units is of a selected fixed gear ratio transmission to enable said rotor to experience tip-speed-ratio of high power coefficient over a wide section of a wind regime, while speed of rotor is occasionally changed by the alternating and/or simultaneous actuation of said hydraulic, motor(s), or turbine(s), as a function of wind power availability; andsaid hydraulic flow of pressurized and non-pressurized feed comprising water or of water solutions or water mixtures with other solvents, including low freezing point solvents, such as glycols, for use in regions of cold climates. 3. A system, method and apparatus for continuous production of variable hydraulic feed flow of fixed desired pressure by a wind farm comprising: multitude of wind driven pump units; each comprising a rotor of fixed pitch blades for maximum capture of wind power, a brake mechanism to stop rotor motion in case of high winds to avoid damage; a rotor-driven pump of a positive displacement type with fixed geometric displacement; a gearbox mechanism of a variable ratio transmission connecting between a shaft of said rotor and said rotor-driven pump in said wind-pump units; with respective inlets and outlets in said rotor-driven pumps of wind-pumps units connected in parallel to respective principle conduits of non-pressurized flow and of pressurized flow;a variable valve means at the outlet of said principle conduit of pressurized flow, actuated in response to monitored pressure deviations from a fixed desired pressure in said principle conduit of pressurized flow, to enable the continuous production of variable hydraulic flow of fixed desired pressure as function of wind power availability;a valve means at an inlet and outlet of said rotor-driven pump of each wind-pump unit to enable temporary isolation of a specific wind-pump unit from the rest of the wind farm for maintenance and/or repair;monitoring means of wind velocity and direction, hydraulic pressure and flow in hydraulic conduits and of speed of rotor(s); andcomputer control means whereby gear ratio in said gearbox mechanism of said wind-pump units is adjusted as a function of wind velocity to enable attainment of high power coefficient tip-seed-ratio of rotors over a wide range wind regime, thereby, effecting high energy conversion efficiency of wind power to hydraulic power in the form of variable hydraulic flow of a fixed desired pressure. 4. A method according to claim 3 wherein feed at inlet to said principle conduit of non-pressurized conduit comprising a salt water solution, and whereas the flow of pressurized salt water solution at the outlet of said pressurized flow conduit used for desalination by reverse osmosis (RO) under a fixed desired pressure. 5. A method according to claim 3 wherein feed at inlet to said principle conduit of non-pressurized flow comprises potable water, and whereas the flow of pressurized potable water at the outlet of said pressurized conduit is admitted to a so-called Energy Recovery System, wherein, said flow of pressurized potable water applies to create a flow of pressurized salt water solution for desalination by reverse osmosis (RO) under the appropriate fixed desired pressure. 6. A method according to claim 3 wherein feed at inlet to said principle conduit of non-pressurized flow comprising a water solution that needs to be filtered, and whereas pressurized flow of said water solution that needs to be filtered at the outlet of said pressurized flow conduit applies to membrane filtration (Micro-, Ultra- and Nano-Filtration) under the fixed desired pressure. 7. A method according to claim 3 wherein feed at inlet to said principle conduit of non-pressurized flow is a water source that needs to be pressurized in supply lines for agricultural and/or domestic and/or industrial applications and/or needs to be elevated from a lower to an upper reservoir for the purpose of hydroelectric rated power generation.
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