WO2015086033A1

WO2015086033A1 - Hybrid electricity generators using wind energy and ocean wave energy

Info

Publication number: WO2015086033A1
Application number: PCT/DZ2014/000004
Authority: WO
Inventors: Mohammed MESSAOUDENE
Original assignee: Messaoudene Mohammed
Priority date: 2013-12-11
Filing date: 2014-10-06
Publication date: 2015-06-18

Abstract

The invention relates to novel methods for hybridisation between wind energy and ocean wave energy in order to reduce the manufacturing cost and increase the energy generated. The invention involves hybridisation of the two systems for floating and non-floating off-shore systems. In each system, hybridisation is provided between two forces (wind energy and ocean current energy) and three sources (wind energy, ocean current energy and the energy from the rising and falling movement of the waves). Novel methods are introduced for each system: a damping system (spring or hydraulic damper) for floating off-shore systems and float-spring systems for non-floating off-shore systems, in order to improve the system. The architecture of the non-floating off-shore systems allows the system to be installed in a grid such as to increase the output thereof.

Description

1. Title of the invention

Hybrid electricity generators based on wind energy and sea waves.

2. Technical field to which the invention relates

The present invention relates to manufacturing hybrid electricity generators utilizing the driving force of the wind and the kinetic energy of sea waves to generate electricity in the context of renewable energies.

3. State of the prior art

It is known that the driving force of the wind and the kinetic energy of the sea waves in the different directions contain a kinetic energy from which we can generate electricity using these forces through a device (electricity generator).

The work presents new hybridization methods (for floating and non-floating offshore systems) between the driving force of the wind and the kinetic energy of sea waves in order to increase the energy generated.

3.1. Floating "offshore" systems

According to the new Japanese system (SKWID) presented by the MODEC company, this system presents a new method of hybridization between wind and sea currents for floating "offshore" systems, this method making it possible to increase the yield of the generator and the reduction of manufacturing costs.

The model presented in this work is not based solely on the hybridization of the driving force of the wind and the ocean currents, but rather the general hybridization between the driving force of the wind and the energy of the waves in the different directions; that is to say it is based on the energy of the marine currents (horizontal movement) and the energy of the up and down movement of the waves (vertical movement).

The addition of the third force is done using a damping system (traction spring or spiral or hydraulic dampers), they dampen and absorb the energy of the waves to transmit it to the generator.

The SKWID system uses just 10% of the wave energy, the rest (90%) is generated by the wind. The addition of the third force to the system using a damping system gives a better performance (because it allows to add another force to the generator; ie, maximizes the use of wave energy) and also allows better stabilization for floating "offshore" systems and improvement in the energy generated.

The system proposed in this work can add to all traditional offshore "off-shore" wind turbines, the addition of this system to "off-shore" wind turbines allowing better performance and stabilization for these systems.

3.2. Non-floating "offshore" systems

In this work we present two hybridization methods for non-floating offshore systems;

- the hybridization between the driving force of the wind and the high and low movement of the waves,

- the hybridization between the driving force of the wind and the high and low movement of the waves and the marine currents.

• Hybridization between the driving force of the wind and the up and down motion of the waves

The Indian system named (AN APPARATUS FOR POWER GENERATION FROM OCEAN TIDES / WAVE MOTION). Presented by Dr. AVADUTHA PRUTHIVI RAJ patented under the number 044 002325 and published on 08 \ 10 \ 2007, presents a new hybridization method between the driving force of the wind and the kinetic energy of the waves (up and down motion), it increases the energy generated since it combines two forces on a single generator.

This system exploits the high and low wave motion using a mass float (m); when the wave arrives it carries the float up, when it passes, the mass of the float will lower the float down.

According to the ARCHIMEDE thrust rule (an object can float if its volume is greater than the mass of displaced water) in this case, the system will not be sensitive to small waves since the float is of large mass ( m), in addition, in order to increase its capacity, it is necessary to increase the mass of the float (so that the mass of the float can lower the float down), so the system will always answer the mass of the float.

The model proposed in this work is constituted using a float-spring system, the float is installed around the mast.

Using a low mass float, in this case the, the float will be sensitive to slight movements on the water. The architecture of the float around the mast gives the possibility to increase its volume, and allows a capture more of the energy of the waves (of the high and low movement of the waves).

The system presented reduces the cost of hybridization between wind and wave energy and increases the energy generated because wave energy will be transmitted directly to the generator.

• Hybridization between the driving force of the wind and the up and down motion of waves and ocean currents

In this work, we present a new method of general hybridization between the driving force of the wind and the kinetic energy of the waves in the different directions ie; the energy of the marine currents (horizontal movement) and the energy of the waves (vertical movement), the hybridization of these three forces on a single generator increases their efficiency without the increase of the manufacturing costs.

4. Purpose of the invention

The present invention aims to achieve power generation systems that hybridize between the driving force of wind and wave energy to increase the energy generated without the increase in manufacturing costs.

5. Statement of Figures

In any case the work will be well understood from the following description with reference to the attached schematic drawings showing the embodiments of the machines;

Fig. 1 Is a view of the system that hybridises between the driving force of wind and the energy of marine currents and the energy of high and low wave motion using hydraulic dampers for floating "offshore" systems.

Fig. East is a view of the hydraulic damper with block (3).

Fig. 2 Is a view of the system that hybridises between the force of the wind and the energy of the sea currents and the energy of the up and down movement of the waves using spiral springs for floating "offshore" systems.

Fig. 2a is a view of the spiral spring with the block (3). Fig. 3 Is a view of the system that hybridises between the driving force of the wind and the energy of the ocean currents and the energy of the up and down motion of the waves using a tension spring for floating "offshore" systems.

Fig. 4 Is a view of the system that hybridizes between wind force and wave energy using a hydraulic damper for floating "offshore" systems.

Fig.5 Is a view of the system that hybridises between wind force and wave energy using a spiral spring for floating "offshore" systems.

Fig. 6 Is a view of the system that hybridizes between wind force and wave energy using a tension spring for floating "offshore" systems.

Fig. 7 Is a view of the system that hybridizes between the force of the wind and the energy of high and low wave motion for non-floating "offshore" systems.

Fig. 8 Is a view of the system that hybridises between the force of the wind and the energy of the ocean currents and the energy of the up and down motion of the waves for the systems

"offshores" not floating.

Fig. 9 Is a view of the networking of the non-floating "offshore" system that hybridises between the force of the wind and the energy of the waves.

6. Presentation of the essence of the invention

Electricity generation machines based on the hybridization between the driving force of the wind and the kinetic energy of the waves.

6.1. Case of a floating "off-shore" system

The power generation system in the case of floating "offshore" systems operates according to the hybridization between the driving force of the wind and the kinetic energy of the waves.

in this work we present two systems that hybridize between the driving force of the wind (11) and the wave energy (14);

6.1.1. Hybrid system the driving force of the wind, the sea currents and the up and down motion of the waves The systems as shown on (Fig. 1) and (Fig. 2) using the driving force of the wind and the energy of the sea currents and the up and down motion of the waves to operate the generator (5).

• Exploitation of the driving force of the wind

The wind acts directly on the propeller (1), the movement of the latter (propeller movement) will be transmitted directly to the generator (5).

• Exploitation of the energy of marine currents

The exploitation of the energy of the marine currents according to FIG. (1) is done by means of a turbine (6) which captures the energy at the passage of the marine current in order to transmit it to the generator (5) .

• Exploitation of high and low wave motions

The idea presented in this work is the exploitation of wave forces using a damping system that absorbs the wave energy and dampens it in order to transmit it to the generator to generate power. In this work, we present three systems of exploitation of the high and low wave motion; o Exploitation using a spiral spring

The movement of the waves acts directly on the base of the system (4), the latter (movement of the waves) makes the system move. The movement of the base results in a contraction of the spiral springs (8) on one side and the expansion of the other.

When the waves stop, the springs are back to their original state, the springs in these cases make it dampen the effect of the waves and put our system more stable.

The reciprocating movement of the springs will be transmitted to the block (3), (equipped with a pinion system) which makes it convert the reciprocating movement of the spring into a unidirectional rotational movement, the movement la to out of the block (3) will be transmitted to the generator (5).

o Operation using a tension spring Operation using a tension spring (13) is exactly like working with a spiral spring, in this case the, one needs a spring system (13) pulley (lO).

the pulley (10) is provided with a pinion, the reciprocating pulley movement is transmitted to the block (3) to uniformly move them in order to transmit it to the generator.

o Operation using hydraulic shock absorbers

The operation of the wave movement with the aid of a hydraulic damper (9) is exactly as the operation of the systems using the spiral springs or traction springs.

The exploitation is done;

Instead of the spiral springs (8), hydraulic dampers (9) with sprockets (Fig. la) are used, the sprockets are the same as the sprockets in a hydraulic pump.

The movement of the waves causes the system to move, the movement of the system causes the piston (16) to move inside the hydraulic damper, and the piston movement causes the oil (17) to expand or inside the hydraulic damper, the compression or expansion of the oil inside the hydraulic damper alternately rotates a system of the pinions, the movement of the latter (pinions) is transmitted to the block (3) for uniform their move in one direction and transmit it to the generator.

When the wave ceases, the gas (15) compressed on one side or another pushes the oil and return the piston to its original state.

The system cage is isolated from the generator with a rubber (2).

6.1.2. Hybrid system the driving force of wind and wave energy

Hybridization can be made between the motive power of the wind and the kinetic energy of the waves for all floating offshore wind turbines, fig. 4 (if hydraulic damping system is used) and fig. 5 (case of use of the spiral springs) and fig. 6 (case of use of traction springs).

• Exploitation of the driving force of the wind The wind acts directly on the propeller (18), the movement of the latter (propeller movement) will be transmitted directly to the generator (17).

• Exploitation of wave energy

The exploitation of the force of the waves is done the same thing as it was described on (6.1.1).

The movement of the waves acts directly on the base of the system, the latter (movement of the waves) makes the system move. The movement of the base results in an expansion of the springs (8) (case of springs) or a displacement of the pistons (case of hydraulic dampers) (9).

When the wave stops, the springs (spring case) or piston (case of a hydraulic damper) will be returned to their original state. Hydraulic springs or dampers in these cases make it dampen the effect of the waves and put our system more stable.

The reciprocating movement of the springs will be transmitted to the block (3), (equipped with a sprocket system) which makes it convert the reciprocating movements of the springs (spring case) or the pistons (case of the hydraulic dampers) into a unidirectional rotational movement, the movement at the output of the block (3) will be transmitted to the block (21), the latter (block 21), adds the rotational movements generated by the block (3) in order to transmit it to the generatrix generatrix (17).

The rotational movement transmitted by the shaft (20) will be added to the rotational movement of the propeller shaft (18) as shown in Figs. 4. and fig. 5 and fig. 6.

6.2. For non-floating "offshore" systems

The systems present in this work hybridize between the driving force of the wind and the kinetic energy of the waves.

6.2.1. Offshore floating system hybrid wind energy and high and low wave motion energy

The system shown in fig. 7 hybridises between the driving force of the wind and the kinetic energy of the waves (up and down motion).

• Exploitation of the driving force of the wind The wind acts directly on the propeller (23), the movement of the latter (propeller) will be transmitted directly to the generator (22).

• exploitation of high and low wave motion

The wave energy will be captured by a simple floating-spring system, the passage of the waves pushes the float (30) upwards. When the waves stop, the spring (28) pushes the float down and returns it to its original position. The position of the spring is fixed by a stop (26), the latter (stop) prevents the spring from moving during movement of the float.

The float is carried using the supports (29), these supports connect the float directly with the internal toothed rod (25) through cracks (27) on the mat.

The up and down movement of the float will be transmitted to the block (24), which converts this movement into a unidirectional rotational movement and adds it to the movement of the generator shaft.

6.2.2. Non-floating "off-shore" system hybridizes wind energy and high and low wave energy and ocean currents

The system shown in fig. 8 hybridises between the driving force of the wind and the up and down motion of the waves and the sea currents.

The system works in the same way as described on (6.2) with the addition of the third force that of the marine current.

The exploitation of the marine currents according to fig. 8 is done using a turbine (33) that captures the energy passing marine costs. The movement of the turbine transmits it to the block (34), the latter makes the horizontal rotational movement turn into a vertical rotational movement by means of a pinion system to the vertical shaft which also transmits its movement to the block ( 31).

6.3 Networking of the offshore non-floating system

The architecture of the system "offshores" hybrid in this work, gives the possibility to put it in network as shows fig. 9.

• The possibility of networking non-floating offshore systems The architecture of the "offshore" non-floating system gives the possibility of networking it in FIG. 9.

The wind acts directly on the propeller (34), the movement of the propeller (propeller movement) will be transmitted directly to the block C, the C block with a system to transform the horizontal rotational movement into a vertical rotational movement to transmit it to block B.

The wave energy will be captured with a simple floating-spring system, the passage of the waves pushes the float (35) upwards. When the waves stop, the spring (36) pushes the float down and returns it to its original position. The up and down movement of the float will be transmitted to the block (B).

The exploitation of the marine currents is done by means of a turbine (36) which makes catch energy at the passage of the marine costs. The movement of the turbine causes it to transmit to block B. Block B has the rotational movement provided by the propeller and turbine and the up and down movement assembled and rotated to transmit it to block A.

Block A has all the rotational movement provided by the different systems assembled to transmit them to the generator

Claims

claims

1. - Electricity generation systems that hybridize between the driving force of wind and wave energy for floating and non-floating "offshore" systems (for each system, hybridization is done using two forces and three forces) to increase the energy generated without the increase in manufacturing costs.

2. A machine according to claim 1, characterized by the hybridization between the driving force of the wind and the energy of the marine currents and the energy of the up and down movement of the waves using hydraulic dampers (FIG. offshore "floating" systems.

3. Machine according to claim 1, characterized by the hybridization between the force of the wind and the energy of the marine currents and the energy of the up and down movement of the waves using spiral springs (FIG 2), for the systems "offshores" floating.

4. The machine according to claim 1, characterized by the hybridization between the driving force of the wind and the energy of the marine currents and the energy of the up and down movement of the waves using traction springs (FIG. floating "offshore" systems.

5. Machine according to claim 1, characterized by the hybridization between the driving force of the wind and the wave energy using hydraulic dampers (FIG 4), for floating "offshore" systems.

6. Machine according to claim 1, characterized by the hybridization between the driving force of the wind and the wave energy using spiral springs (FIG 5) for the floating "offshore" systems.

7. Machine according to claim 1, characterized by the hybridization between the driving force of the wind and the wave energy using traction springs (Figure 6), for floating "offshore" systems.

8. Machine according to claim 1, characterized by the hybridization between the force of the wind and the energy of the up and down motion of the waves, using a float-spring system (FIG 7), for non-offshore systems. floating.

9. -Machine according to claim 1, characterized by the hybridization between the force of the wind and the energy of the marine currents and the energy of the up and down motion of the waves (FIG 8), for the "offshore" systems not floating.

9. - Machine according to claim 1, characterized by the networking of the non-floating "offshore" system which hybridises between the force of the wind and the wave energy (fig- 9).