Energy Conversion System for Ocean Surface Waves
An energy conversion system is an apparatus used to collect the kinetic energy of incoming ocean waves and to covert that kinetic energy into electrical energy. The apparatus includes a buoyant platform and a plurality of wave-energy capturing (WEC) units. The buoyant platform stays afloat upon the ocean surface. The WEC units are peripherally distributed about the buoyant platform, which allows the apparatus to collect to the kinetic energy from incoming ocean waves from any direction. Each WEC unit includes a cam mechanism, a recoiling mechanism, a cable, an anchor, a pinion, a transmission, and a generator. The cam mechanism converts the linear motion of the buoyant platform into rotational motion, which is fed into the pinion, through the transmission, and into the generator. The recoiling mechanism returns the cam mechanism to its equilibrium position. Each WEC unit is secured to the seabed through the anchor and the cable.
The current application claims priority to a provisional application 61/988,037 filed on May 2, 2014.
The current application is a continuation-in-part and claims priority to a non-provisional application Ser. No. 14/303,569 filed on Dec. 3, 2014. The non-provisional application Ser. No. 14/303,569 claims priority to a provisional application 61/973,796 filed on Apr. 1, 2014.
FIELD OF THE INVENTIONThe present invention relates generally to renewable energy and green energy systems. More specifically, the present invention is a renewable energy system based on ocean surface waves.
BACKGROUND OF THE INVENTIONRenewable energy systems involve the use of resources that are continuously replenished such as sunlight, wind, rain, oceanic tides and waves, and geothermal heat. Renewable energy systems are favorable due to their ability to provide sustainable energy with largely reduced impact on the environment. The reduced environmental impact of renewable energy systems is particularly favorable relative to electricity generation from burning fossil fuel sources such as petroleum, coal, and natural gas. Fossil fuels yield a significantly high amount of energy relative to units burned. However, this benefit comes at the cost of increased greenhouse gas emissions into the atmosphere from the combustion of fossil fuels. Additionally, because fossil fuels generally form over millions of years, they are considered a non-renewable source of energy. Perhaps the most prominent consequence of greenhouse gas emissions is the progressive increase in the temperature of the Earth's atmosphere and oceans. Increased greenhouse gas emissions along with factors such as deforestation have led to warming of the Earth's climate system. The problem is projected to worsen in the future as the Earth's population increases, leading to a corresponding increase in energy demand and consumption. The consequences of the Earth's increasing temperature are perhaps most visible in the gradual decline of the Arctic sea ice over the years. The melting of the polar icecap has resulted in a rising of the sea level as well. Numerous ecosystems of the Earth negatively affected by rising temperatures and increased atmospheric CO2 concentrations. Renewable energy systems greatly reduce the impact on the Earth's environment. However, despite technological advancements in renewable energy systems in recent years, renewable energy systems remain underutilized. Renewable energy systems hold a relatively low percentage share relative to conventional (fossil fuel) energy systems.
Therefore, an objective of the present invention is to provide a renewable energy system based on ocean surface waves, which are a readily available energy source. Another objective of the present invention is to provide a renewable energy system without having a negative environmental impact.
All illustrations of the drawings are for the purpose of describing selected versions of the present invention and are not intended to limit the scope of the present invention.
As can be seen
As can be seen in
The cam mechanism 3 is essentially cranked by each incoming ocean wave and requires the pinion 17 and the transmission 18 to properly rotate the generator 33. Therefore, the cam mechanism 3 is operatively engaged to the pinion 17, which converts the linear motion of the buoyant platform 1 into rotational motion that can be inputted into the generator 33. The pinion 17 is then torsionally connected into the transmission 18, which properly ratios the rotational motion that is being fed into the generator 33. Thus, the transmission 18 needs to be torsionally connected into the generator 33 so that the generator 33 is finally able to convert the kinetic energy collected from the incoming ocean wave into electrical energy.
The cam mechanism 3 can be designed in two different configurations. The first configuration of the cam mechanism 3 comprises a lever arm 4 and a fulcrum 8, which are shown in
The second configuration of the cam mechanism 3 comprises a boom 9, a pulley 12, a spool 13, and a drive gear 14, which are shown in
The drive train formed by the pinion 17, the transmission 18, and the generator 33 is only capable of converting kinetic energy into electrical energy if these components are all rotating in the same direction. Thus, each of the plurality of WEC units 2 should further comprise a first one-way clutch 19 and a second one-way clutch 20, which are shown in
The rotational energy storage mechanism 21 is used to provide the generator 33 with continuous rotational motion because the cam mechanism 3 is only able to crank the pinion 17 at distinct intervals. In one embodiment of the present invention illustrated in
The locking mechanism 28 is required to prevent the input shaft 23 from rotating backwards after the input shaft 23 is rotated forward during each cranking interval. The locking mechanism 28 comprises a first gear 29, a second gear 30, and a one-way bearing 31. The first gear 29 is axially connected to the input shaft 23 so that the first gear 29 is rotated in a forward direction during each cranking interval. The second gear 30 is engaged to the first gear 29, which rotates the second gear 30 in a backward direction during each cranking interval. The second gear 30 is rotatably mounted onto the one-way bearing 31, which prevents the second gear 30 from rotating in the forward direction and consequently prevents the first gear 29 and the input shaft 23 from rotating in the backward direction.
In this embodiment of the present invention, the rotational energy storage mechanism 21 with the input shaft 23, the output shaft 24, the drive spring 25, and the locking mechanism 28 can be mechanically integrated into two different areas along the drive shaft. One area is between the pinion 17 and the transmission 18 so that the pinion 17 is torsionally connected to the input shaft 23 and so that the output shaft 24 is torsionally connected into the transmission 18. The other area is between the transmission 18 and the generator 33 so that the transmission 18 is torsionally connected to the input shaft 23 and so that the output shaft 24 is torsionally connected into the generator 33. The rotational energy storage mechanism 21 is this embodiment can be mechanically integrated into either of the aforementioned areas or one of the rotational energy storage mechanism 21 can be mechanically integrated into each of the aforementioned areas.
Moreover, in the first configuration of the cam mechanism 3, each of the plurality of WEC units 2 further comprises a tension/slack generating mechanism 34 shown in
The connecting rod 38 is used to actuate the bracket 35 by the geometric relation of the connecting rod 38 between the lever arm 4 and the fulcrum 8. The connecting rod 38 comprises a railed end 39 and a fixed end 40. The railed end 39 is a narrow shaft at one end of the connecting rod 38, and the actuation end 37 is slidably engaged along the railed end 39 so that the actuation end 37. The fixed end 40 is the other end of the connecting rod 38 that the connection rod 38 rotates about, and, thus, the fixed end 40 needs to be pivotally connected to the fulcrum 8. The connections between aforementioned components are mechanically configured in such a way that only two situations can occur with the present invention. As can be seen in
The present invention may encounter environment disasters that may be too severe to simply provide the cable 15 with more slack or tension. For example, if the water level rises to a height that was not predetermined when the present invention was being anchored into the seabed 45, then the present invention will need a failsafe to survive such disasters. Thus, each of the plurality of WEC units 2 further comprises a stopper 43 and a choke 44, which are also shown in
The present invention can be situated in an area with either parallel rows of waves or randomly-oriented waves. In one embodiment of the present invention illustrated in
As can be seen in
Although the invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed.
Claims
1. An energy conversion system for ocean surface waves comprises:
- a buoyant platform;
- a plurality of wave-energy capturing (WEC) units;
- each of said plurality of WEC units comprises a cam mechanism, a recoiling mechanism, a cable, an anchor, a pinion, a transmission, a rotational energy storage mechanism, a tension/slack generating mechanism and a generator;
- said plurality of WEC units being peripherally distributed about said buoyant platform;
- said cam mechanism being tethered to said anchor by said cable;
- said cam mechanism being mounted onto said buoyant platform, wherein the cam mechanism is actuated by linear motion of said buoyant platform;
- said recoiling mechanism being operatively coupled to said cam mechanism, wherein said recoiling mechanism recoils said cam mechanism after said cam mechanism is actuated by said linear motion of said buoyant platform;
- said cam mechanism being operatively engaged to said pinion, wherein said cam mechanism converts said linear motion of said buoyant platform into rotational motion in order to rotate said pinion;
- said pinion being torsionally connected into said transmission; and
- said transmission being torsionally connected into said generator;
- said cam mechanism comprises a lever arm and a fulcrum;
- said recoiling mechanism being a tension spring;
- said lever arm comprises a protruding end and a racked gear end;
- said fulcrum being connected onto said buoyant platform;
- said lever arm being pivotally mounted to said fulcrum between said protruding end and said racked gear end;
- said tension spring being operatively coupled to said racked gear end, wherein said tension spring recoils said racked gear end towards said buoyant platform;
- said anchor being tethered to said protruding end by said cable;
- said racked gear end being engaged to said pinion;
- said tension/slack generating mechanism comprises a bracket, a connecting rod, a length adjusting spring, and a locking spring;
- said bracket comprises a clamping end and an actuation end;
- said cable traversing about said protruding end and along a top surface of said lever arm;
- said cable being tethered to said lever arm by said length adjusting spring;
- said clamping end being positioned around said cable and said top surface;
- said bracket being pivotally mounted to said lever arm in between said clamping end and said actuation end;
- said actuation end being tethered to said lever arm by said locking spring;
- said actuation end being slidably engaged along a railed end of said connecting rod; and
- a fixed end of said connecting rod being pivotally connected to said fulcrum.
2. (canceled)
3. (canceled)
4. The energy conversion system for ocean surface waves as claimed in claim 1 comprises:
- wherein said lever arm and said buoyant platform are oriented at a functional angle range between each other; and
- said cable being pressed against said top surface by said clamping end.
5. The energy conversion system for ocean surface waves as claimed in claim 1
- wherein
- said clamping end being offset from said cable and said top surface.
6. The energy conversion system for ocean surface waves as claimed in claim 1 comprises:
- said cam mechanism comprises a boom, a pulley, a spool, and a drive gear;
- the recoiling mechanism being a torsion spring;
- said boom comprises an outer end and an inner end;
- said inner end being mounted onto said buoyant platform;
- said spool being rotatably mounted onto said buoyant platform, adjacent to said inner end;
- said pulley being rotatably mounted to said outer end;
- said cable traversing from said anchor, about said pulley, and to said spool;
- said spool being axially connected to said drive gear;
- said drive gear being engaged to said pinion; and
- said spool being axially connected to said torsion spring.
7. The energy conversion system for ocean surface waves as claimed in claim 1, wherein said anchor for each of said WEC units is lodged into a seabed.
8. The energy conversion system for ocean surface waves as claimed in claim 1, wherein said linear motion of said buoyant platform is created by incoming ocean waves that are moving said buoyant platform in a horizontal direction, and wherein said linear motion of said buoyant platform is converted from kinetic energy received by said buoyant platform into electrical energy generated by said plurality of WEC units.
9. The energy conversion system for ocean surface waves as claimed in claim 1, wherein said linear motion of said buoyant platform is created by incoming ocean waves that are moving said buoyant platform in a vertical direction, and wherein said linear motion of said buoyant platform is converted from kinetic energy received by said buoyant platform into electrical energy generated by said plurality of WEC units.
10. The energy conversion system for ocean surface waves as claimed in claim 1, wherein said linear motion of said buoyant platform is created by incoming ocean waves that are swaying said buoyant platform back and forth in an oscillatory manner, and wherein said linear motion of said buoyant platform is converted from kinetic energy received by said buoyant platform into electrical energy generated by said plurality of WEC units.
11. The energy conversion system for ocean surface waves as claimed in claim 1 comprises:
- each of said plurality of WEC units further comprises a first one-way clutch; and
- said first one-way clutch being torsionally integrated between said pinion and said transmission.
12. The energy conversion system for ocean surface waves as claimed in claim 11 comprises:
- each of said plurality of WEC units further comprises a second one-way clutch; and
- said second one-way clutch being torsionally integrated between said transmission and said generator.
13. The energy conversion system for ocean surface waves as claimed in claim 1 comprises:
- said rotational energy storage mechanism comprises a flywheel; and
- said flywheel being torsionally connected to said generator.
14. (canceled)
15. The energy conversion system for ocean surface waves as claimed in claim 1 comprises:
- said pinion being torsionally connected to said input shaft; and
- said output shaft being torsionally connected into said transmission.
16. The energy conversion system for ocean surface waves as claimed in claim 1 comprises:
- said transmission being torsionally connected to said input shaft; and
- said output shaft being torsionally connected into said generator.
17. The energy conversion system for ocean surface waves as claimed in claim 1 comprises:
- each of the plurality of WEC units further comprises a stopper and a choke;
- said stopper being integrated along the cable;
- said choke being connected onto said cam mechanism around said cable; and
- said choke being positioned along said cable in between said anchor and said stopper.
18. The energy conversion system for ocean surface waves as claimed in claim 1 comprises:
- said buoyant platform being a circular disk shape; and
- said lever arm for each of said plurality of WEC units being radially positioned around said circular disk shape.
19. The energy conversion system for ocean surface waves as claimed in claim 1 comprises:
- said buoyant platform being a circular disk shape; and
- a boom for each of said plurality of WEC units being radially positioned around said circular disk shape.
20. The energy conversion system for ocean surface waves as claimed in claim 1 comprises:
- said buoyant platform being a rectangular shape; and
- said lever arm for each of said plurality of WEC units being perpendicularly oriented with a respective edge of said rectangular shape.
21. The energy conversion system for ocean surface waves as claimed in claim 1 comprises:
- said buoyant platform being a rectangular shape; and
- a boom for each of said plurality of WEC units being perpendicularly oriented with a respective edge of said rectangular shape.
22. (canceled)
23. An energy conversion system for ocean surface waves comprises:
- a buoyant platform;
- a plurality of wave-energy capturing (WEC) units;
- each of said plurality of WEC units comprises a cam mechanism, a recoiling mechanism, a cable, an anchor, a pinion, a transmission, a rotational energy storage mechanism, and a generator;
- said plurality of WEC units being peripherally distributed about said buoyant platform;
- said cam mechanism being tethered to said anchor by said cable;
- said cam mechanism being mounted onto said buoyant platform, wherein the cam mechanism is actuated by linear motion of said buoyant platform;
- said recoiling mechanism being operatively coupled to said cam mechanism, wherein said recoiling mechanism recoils said cam mechanism after said cam mechanism is actuated by said linear motion of said buoyant platform;
- said cam mechanism being operatively engaged to said transmission;
- said transmission being operatively connected into said generator;
- said rotational energy storage mechanism comprises an input shaft, an output shaft, a drive spring, and a locking mechanism;
- said input shaft being torsionally fixed to a first end of said drive spring; and
- a second end of said drive spring being torsionally fixed to said output shaft.
24. The energy conversion system for ocean surface waves as claimed in claim 23 comprises:
- said cam mechanism comprises a lever arm and a fulcrum;
- said recoiling mechanism being a tension spring;
- said lever arm comprises a protruding end and a racked gear end; said fulcrum being connected onto said buoyant platform;
- said lever arm being pivotally mounted to said fulcrum between said protruding end and said racked gear end;
- said tension spring being operatively coupled to said racked gear end, wherein said tension spring recoils said racked gear end towards said buoyant platform;
- said anchor being tethered to said protruding end by said cable; and
- said racked gear end being engaged to said pinion.
25. The energy conversion system for ocean surface waves as claimed in claim 24 comprises:
- each of said plurality of WEC units further comprises an tension/slack generating mechanism;
- said tension/slack generating mechanism comprises a bracket, a connecting rod, a length adjusting spring, and a locking spring;
- said bracket comprises a clamping end and an actuation end;
- said cable traversing about said protruding end and along a top surface of said lever arm;
- said cable being tethered to said lever arm by said length adjusting spring;
- said clamping end being positioned around said cable and said top surface;
- said bracket being pivotally mounted to said lever arm in between said clamping end and said actuation end;
- said actuation end being tethered to said lever arm by said locking spring;
- said actuation end being slidably engaged along a railed end of said connecting rod; and
- a fixed end of said connecting rod being pivotally connected to said fulcrum
26. The energy conversion system for ocean surface waves as claimed in claim 25 comprises:
- wherein said lever arm and said buoyant platform are oriented at a functional angle range between each other; and
- said cable being pressed against said top surface by said clamping end.
27. The energy conversion system for ocean surface waves as claimed in claim 25, wherein said clamping end being offset from said cable and said top surface.
28. The energy conversion system for ocean surface waves as claimed in claim 23 comprises:
- said cam mechanism comprises a boom, a pulley, a spool, and a drive gear;
- the recoiling mechanism being a torsion spring;
- said boom comprises an outer end and an inner end;
- said inner end being mounted onto said buoyant platform;
- said spool being rotatably mounted onto said buoyant platform, adjacent to said inner end;
- said pulley being rotatably mounted to said outer end;
- said cable traversing from said anchor, about said pulley, and to said spool;
- said spool being axially connected to said drive gear;
- said drive gear being engaged to said pinion; and
- said spool being axially connected to said torsion spring.
29. The energy conversion system for ocean surface waves as claimed in claim 23, wherein said anchor for each of said WEC units is lodged into a seabed.
30. The energy conversion system for ocean surface waves as claimed in claim 23, wherein said linear motion of said buoyant platform is created by incoming ocean waves that are moving said buoyant platform in a horizontal direction, and wherein said linear motion of said buoyant platform is converted from kinetic energy received by said buoyant platform into electrical energy generated by said plurality of WEC units.
31. The energy conversion system for ocean surface waves as claimed in claim 23, wherein said linear motion of said buoyant platform is created by incoming ocean waves that are moving said buoyant platform in a vertical direction, and wherein said linear motion of said buoyant platform is converted from kinetic energy received by said buoyant platform into electrical energy generated by said plurality of WEC units.
32. The energy conversion system for ocean surface waves as claimed in claim 23, wherein said linear motion of said buoyant platform is created by incoming ocean waves that are swaying said buoyant platform back and forth in an oscillatory manner, and wherein said linear motion of said buoyant platform is converted from kinetic energy received by said buoyant platform into electrical energy generated by said plurality of WEC units.
33. The energy conversion system for ocean surface waves as claimed in claim 23 comprises:
- each of said plurality of WEC units further comprises a first one-way clutch; and
- said first one-way clutch being torsionally integrated between said pinion and said transmission.
34. The energy conversion system for ocean surface waves as claimed in claim 33 comprises:
- each of said plurality of WEC units further comprises a second one-way clutch; and
- said second one-way clutch being torsionally integrated between said transmission and said generator.
35. The energy conversion system for ocean surface waves as claimed in claim 23 comprises:
- said rotational energy storage mechanism comprises a flywheel; and
- said flywheel being torsionally connected to said generator.
36. The energy conversion system for ocean surface waves as claimed in claim 23 comprises:
- said pinion being torsionally connected to said input shaft; and
- said output shaft being torsionally connected into said transmission.
37. The energy conversion system for ocean surface waves as claimed in claim 23 comprises:
- said transmission being torsionally connected to said input shaft; and
- said output shaft being torsionally connected into said generator.
38. The energy conversion system for ocean surface waves as claimed in claim 23 comprises:
- each of the plurality of WEC units further comprises a stopper and a choke;
- said stopper being integrated along the cable;
- said choke being connected onto said cam mechanism around said cable; and
- said choke being positioned along said cable in between said anchor and said stopper.
39. The energy conversion system for ocean surface waves as claimed in claim 23 comprises:
- said buoyant platform being a circular disk shape; and
- a lever arm for each of said plurality of WEC units being radially positioned around said circular disk shape.
40. The energy conversion system for ocean surface waves as claimed in claim 23 comprises:
- said buoyant platform being a circular disk shape; and
- a boom for each of said plurality of WEC units being radially positioned around said circular disk shape.
41. The energy conversion system for ocean surface waves as claimed in claim 23 comprises:
- said buoyant platform being a rectangular shape; and
- a lever arm for each of said plurality of WEC units being perpendicularly oriented with a respective edge of said rectangular shape.
42. The energy conversion system for ocean surface waves as claimed in claim 23 comprises:
- said buoyant platform being a rectangular shape; and
- a boom for each of said plurality of WEC units being perpendicularly oriented with a respective edge of said rectangular shape.
Type: Application
Filed: Mar 5, 2015
Publication Date: Oct 1, 2015
Inventor: Rohan Patel (Bensalem, PA)
Application Number: 14/639,879