BE1031007B1 - Electricity generator assembly - Google Patents

Abstract

The present invention relates to an electricity generator assembly from several renewable energy sources comprising a wind turbine associated with at least one rotating machine generating electricity, wind turbine which in turn comprises a paddle wheel (1) which is mounted on a rotation shaft (7) and which is associated with an at least partially annular wind concentrator (20), optionally adjustable in position, which comprises optionally adjustable guide walls (25) arranged around said impeller ( 1), between two opposing annular plates (31,33), essentially perpendicular thereto, and the interior surface (35) of the annular plate (31) exposed to the sun and/or the surfaces exposed to the sun of the guide walls ( 25) of the concentrator (20) being at least partially covered with photovoltaic cells (36,26).

Description

1 BE2023/5482

Electricity generator assembly

[0001] The present invention relates to an electricity generating assembly from various renewable energy sources.

[0002] The generation of electrical energy from renewable energy sources is an area which has focused a great deal of effort in recent years. In the context of rotating machines making it possible to generate electric current using the wind, a distinction is made between wind turbines with an axis of rotation parallel to the direction of the wind and wind turbines with a transverse axis of rotation, preferably essentially perpendicular, to the direction of the wind that animates it. If the first are increasingly larger, can nowadays generate up to more than 300 MW and are sometimes grouped in fields of several dozen machines, particularly on the high seas, the second have experienced less significant growth but have nevertheless all their interest in smaller installations.

[0003] Among wind turbines with an axis of rotation perpendicular to the direction of the wind, paddle wheels are particularly known. The impeller can be associated with an at least partially annular wind concentrator, optionally adjustable in position, which comprises optionally adjustable guide walls arranged around the impeller, between two annular plates and which serve to guide and concentrate the wind before it impacts the blades of the paddle wheel, and possibly to facilitate the exit of the winds after having driven the paddle wheel. We will cite in particular WO2004/063565 or WO2004/018872 or even WO2012/026879. For paddle wheels associated with a wind concentrator, we will also refer to the following documents:

US5380149, US2012/025870, WO2010/098656, FR3046817, WO2017/081496 and BE-1029739-B1.

[0004] We also know photovoltaic panels which transform light energy into electrical energy. Many roof surfaces are now equipped with them.

[0005] The present invention aims to provide an electricity generator assembly from several renewable energy sources.

[0006] According to the invention, the electricity generator assembly from several renewable energy sources comprises a wind turbine which in turn comprises a paddle wheel which is

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2 BE2023/5482 mounted on a rotation shaft and which is associated with an at least partially annular wind concentrator, possibly adjustable in position, which comprises optionally adjustable guide walls arranged around said impeller, between two opposite annular plates , essentially perpendicular thereto, and the interior surface of the annular plate exposed to the sun and/or the surfaces exposed to the sun of the guide walls of the concentrator being at least partially covered with photovoltaic cells.

[0007] The annular elements or plates can have various shapes. They can be planar or at least one have an interior wall or surface deviating from the plane of symmetry of the impeller by moving away from the axis of symmetry of the element or annular plate. This arrangement makes it possible to increase the concentration of the incoming wind or, expressed differently, to increase the speed of the wind towards the blades of the impeller, and thus to increase the power and improve the performance thereof. in electricity production.

[0008] According to one embodiment, said interior surface of an annular plate is essentially flat. In this case, it forms a frustoconical surface around the periphery of the impeller. According to another form of execution, it can be curved, like a trumpet bell. In both cases, cells are created around the periphery of the blade wheel having a significantly increased wind collection section compared to the wind passage section in the blade wheel. The collection section is also increased compared to the collection section of a known concentrator having external surfaces essentially or approximately in the plane of the external surfaces of the impeller.

[0009] The combination of electrical generation by the rotating machine and electrical generation by photoelectric cells according to the invention makes it possible to increase the electrical production of a given machine. The arrangement according to the invention is efficient since it is supplied by two renewable energy sources, the wind and the sun. We know that most of the time one of the two sources is operational when the other is not or less so and, therefore, the period of operation or generation of electrical energy of the generator assembly electricity of the invention is increased.

The impeller can be arranged horizontally (the axis being essentially vertical) or vertically (the axis being essentially horizontal). In both cases, the axis or shaft of rotation is advantageously essentially perpendicular to the direction of the wind.

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3 BE2023/5482

[0011] The paddle wheel can advantageously be associated with at least one rotating machine generating electric current. According to an advantageous embodiment, said at least one electric generating machine is mounted on the shaft of the paddle wheel.

[0012] According to another advantageous embodiment, a rotating electric generating machine is mounted on the shaft of the paddle wheel on each side thereof. This arrangement makes it possible to better balance the loads and/or stresses acting on the paddle wheel shaft and thus reduce the wear of the bearings and bearings causing friction and thus reducing the efficiency of the machine.

[0013] According to an advantageous embodiment, several impellers are mounted on the same rotation shaft and a rotating machine generating electricity is mounted at each of the two ends of the rotation shaft and possibly between two impellers. blades. Such an electricity generator assembly makes it possible to advantageously group several paddle wheels on the same axis of rotation in a well-balanced manner and to produce electric current with good efficiency.

[0014] Such an electricity generator assembly can be arranged in a support structure topped by a roof. The latter can be formed by or covered with photovoltaic panels. This electricity generator assembly is particularly efficient.

[0015] It is understood that in the context of the present invention, the terms “vertical” and “horizontal” in the singular and plural have the usual meaning, the object being in the normal assembly and/or use position. . Similarly, when we talk about surface exposed to the sun, we mean surfaces exposed to the sun when the object is in the normal position of use.

[0016] If the object of the invention is indeed as described above, it does not concern the guide walls or blades, nor their position, nor their shape, nor their constitution. Those skilled in the art are certainly able to select the blades of the paddle wheel as well as the guide walls of the wind concentrator, according to the needs of the installation to be built.

[0017] The invention is described in more detail in the example below, with the support of the figures in which: - Figure 1 is a schematic cross-sectional view of an electricity generator assembly according to the invention, perpendicular to the axis of rotation of the impeller; And

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4 BE2023/5482 - Figure 2 is an exploded view of an electricity generator assembly according to the invention; and - Figure 3 is a perspective view of an advantageous variant of an electricity generator assembly according to the invention comprising several paddle wheels.

[0018] In the figures, the same reference marks relate to identical or similar elements. It is of course understood that the figures are schematic and serve only for the proper understanding and to illustrate the present description without serving to limit the scope of the invention.

The schematic representation of Figure 1 clearly shows a conventional impeller 1 comprising vanes 3 distributed uniformly angularly around the axis of rotation 5. With reference to Figure 2, it clearly appears that the impeller 1 is mounted on a shaft 7 which materializes the axis of rotation 5. Several can be provided, in particular two electric generators 11 and 13 on this same shaft 7. A wind concentrator 20 is arranged around the perimeter of the blade wheel 1. In the example shown, said wind concentrator 20 is fixed and has guide walls 25. According to the example, these are also fixed, all oriented in the same way and uniformly distributed around the periphery of the impeller. 1, therefore angularly around the axis of symmetry 5 of the wind concentrator 20. It is nevertheless possible to provide orientable guide walls depending on the direction of the impacting wind, for example.

Alternatively, the wind concentrator 20 can be orientable. As can be seen in Fig. 2, the guide walls 25 of the wind concentrator 20 are arranged between two annular elements or opposite annular plates 31 and 33, essentially perpendicular to these, two annular plates 31,33 which have a interior surface 35,37 respectively, which deviate from the plane of symmetry 43 of the impeller 1 by moving away from the axis of symmetry 5 of said annular plate 31,33. The surfaces or parts of the interior surface 35 exposed to the sun of the lower annular plate 31 can be equipped or covered at least partially with photovoltaic cells 36. Likewise the surfaces exposed to the sun of the guide walls 25 can be equipped or covered at least partially with photovoltaic cells 36. photovoltaic cells 26. It is of course understood that those skilled in the art will choose the surfaces exposed to the sun according to the orientation of the assembly in relation to the sun.

[0020] The arrangement according to the invention makes it possible to concentrate the wind entering in the direction of the blades, in particular to increase the speed of the wind at the entrance to the blade wheel, and thus to increase the power and improve its performance, for greater electrical production.

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Depending on the climatic and light conditions, the supply of electricity produced by the wind part is supplemented or replaced by the supply of electricity generated by the photovoltaic cells. 5 [0021] It will be noted that in the representations, in particular in Figures 1 and 2, the axis of rotation 5 of the impeller 1 is vertical. It is of course clear to those skilled in the art that it can also be horizontal or have any other orientation. In any case, this axis 5 remains essentially perpendicular to the direction of the wind 50.

[0022] In the embodiment shown, said interior surface 35.37 of an annular plate 31.33 is essentially flat. It therefore forms a frustoconical surface around the periphery of the impeller 1. Alternatively, it can be curved, like a trumpet horn.

In both cases, cells are created around the periphery of the blade wheel having a significantly increased wind collection section compared to the wind passage section in the blade wheel and the wind is thus concentrated on the blades of the blade. the impeller 1.

[0023] Figure 3 shows that it is advantageous to assemble several electrical generator assemblies described above on the same shaft 7 in order to form an electricity generator assembly comprising two, three or more impellers 1 associated with one or more rotating electrical generating machines 11. In Figure 3, there is shown an electric generator at each end of the shaft 7 and two generators between two paddle wheels 1. According to an advantageous embodiment, one can provide a single electric generator between two paddle wheels.

This type of arrangement makes it possible to construct an efficient and compact electricity generator assembly, especially since the electrical generators 11,13 can be accommodated in the space created by the shape given to the upper 33 and lower annular plates. 31 of the wind concentrator 20.

[0024] As can still be seen in Figures 2 and 3, said electricity generator assembly can be arranged in a support structure 60, possibly topped by a roof 61. It is of course understood that the tree and Other elements of the whole need to be secured in one way or another. Said roof 61 is advantageously formed or covered by photovoltaic panels 63. The support structure can fix the plates or annular elements 31,33 and possibly the guide walls 25.

[0025] In addition to the aforementioned advantage, the support structure makes it possible to stiffen the assembly and, therefore, to accept high speed winds, unlike axis wind turbines.

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6 BE2023/5482 parallel to the wind direction which must be stopped from a wind speed of around 90 km/h.

[0026] Furthermore, the support structure 60 makes it possible to superimpose or juxtapose several assemblies, as shown in Figure 3.

[0027] By way of example, an assembly with a single impeller, according to the invention, having a diameter of approx. 20m can offer approx. 1000m? of photovoltaic cells and include two generators. Alternatively, a 30 m diameter tower with three floors, therefore three sets, as shown in Figure 3, can offer approx. 2500 m° of photovoltaic cells and include up to 6 generators.

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Claims (10)

7 BE2023/5482 Claims 1. Electricity generator assembly comprising a wind turbine associated with at least one rotating machine generating electricity (11,13), wind turbine which in turn comprises a paddle wheel (1) which is mounted on a rotation shaft ( 7) and which is associated with an at least partially annular wind concentrator (20), possibly adjustable in position, which comprises optionally adjustable guide walls (25) arranged around said impeller (1), between two annular plates opposite (31,33), essentially perpendicular thereto, and the interior surface of the annular plate (35) exposed to the sun and/or the surfaces exposed to the sun of the guide walls (25) of the wind concentrator (20) being at least partially covered with photovoltaic cells (26,36). 2. Electricity generator assembly according to claim 1 characterized in that the interior surface (35,37) of an annular plate (31,33) is essentially flat. 3. Electricity generator assembly according to claim 1 characterized in that the interior surface (35,37) of an annular plate (31,33) is curved, like a trumpet bell. 4. Electricity generating assembly according to claim 1, characterized in that said at least one rotating electricity generating machine (13) is mounted on the shaft (7) of the paddle wheel (1). 5. Electricity generator assembly according to claim 1, characterized in that a rotating electricity generating machine (13) is mounted on the shaft of the paddle wheel (1) on each side thereof. 6. Electricity generator assembly according to one of the preceding claims, characterized in that the impeller (1) is arranged horizontally. 7. Electricity generator assembly according to one of claims 1 to 5, characterized in that the paddle wheel (1) is arranged vertically. Deckers 02 8 BE2023/5482 8. Electricity generator assembly according to one of the preceding claims, characterized in that it comprises several wind turbines mounted on the same shaft (7) or axis of rotation (5). 9. Electricity generator assembly according to one of the preceding claims, characterized in that it is topped by a roof (61), preferably covered with photovoltaic panels (63). 10. Electricity generator assembly according to one of the preceding claims, characterized in that it is arranged in a support structure (60). Deckers 02