Hybrid power generation system

Abstract

A hybrid power generation system provided by the present invention comprises: a power generation assembly comprising a rotating column, a plurality of supports and a plurality of photovoltaic panels, the plurality of supports are distributed along the circumferential direction of the rotating column, the plurality of photovoltaic panels are respectively installed on the corresponding supports and extend along the radial direction of the rotating column, and the plurality of photovoltaic panels are connected with the rotating column; the photovoltaic panel facing the sun absorbs solar energy and converts the solar energy into electric energy, and the photovoltaic panel facing the wind coming direction is driven by wind power to drive the rotating column to rotate around the shaft. The wind power turbine is used for converting kinetic energy provided by the rotating column into electric energy, and a speed limiting mechanism is arranged on the wind power turbine and used for limiting the rotating speed of the rotating column so as to protect the photovoltaic panel.

Description

Technical Field

[0001] The present invention relates to the field of new energy technologies, and particularly to a hybrid power generation system. Background Art

[0002] In the ultra-high latitude regions of our country, due to its unique geographical environment characteristics, such as high latitude, high wind speed, low irradiation, thick snow cover, etc., higher requirements are put forward for the acquisition of clean energy. At present, an energy conversion device for combined wind and solar power generation can adapt to the ultra-high latitude extreme environment and make full use of the clean energy that can be converted by the local environment, such as wind energy and solar energy.

[0003] This device adopts an innovative design concept, using the photovoltaic panel as the blade to drive the wind turbine to rotate at the same time, realizing the organic combination of photovoltaic power generation and wind power generation. This design enables the energy conversion device to have better adaptability in extreme environments such as low temperature, high wind speed, thick snow cover, and polar night. However, when the system rotates at high speed, it is easily damaged due to excessive centrifugal force, and the supplementary effect on photovoltaic power generation is limited.

[0004] In order to overcome the above-mentioned defects existing in the prior art, there is an urgent need in this field for a hybrid power generation technology to ensure the stable operation of the wind-solar power generation system in extreme environments in ultra-high latitude regions, and at the same time improve the efficiency of photovoltaic power generation, so as to provide a more reliable and efficient way to obtain clean energy for ultra-high latitude regions. Summary of the Invention

[0005] The following presents a brief overview of one or more aspects to provide a basic understanding of these aspects. This overview is not an exhaustive survey of all contemplated aspects, and is neither intended to identify key or decisive elements of all aspects nor to attempt to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that follows.

[0006] In order to overcome the above-mentioned defects existing in the prior art, the present invention provides a hybrid power generation system for ensuring the stable operation of the wind-solar power generation system in extreme environments in ultra-high latitude regions, and at the same time improving the efficiency of photovoltaic power generation, so as to provide a more reliable and efficient way to obtain clean energy for ultra-high latitude regions.

[0007] Specifically, the hybrid power generation system provided by the first aspect of the present invention includes: a power generation assembly, including a rotating column, a plurality of brackets, and a plurality of photovoltaic panels. Among them, the plurality of brackets are distributed along the circumferential direction of the rotating column, and the plurality of photovoltaic panels are respectively installed on the corresponding brackets and extend along the radial direction of the rotating column. The photovoltaic panels facing the sun absorb solar energy and convert it into electrical energy, while the photovoltaic panels facing the wind direction drive the rotating column to rotate around the axis under the action of wind force; and a wind turbine, which is used to convert the kinetic energy provided by the rotating column into electrical energy. Among them, a speed limiting mechanism is provided on the wind turbine to limit the rotation speed of the rotating column to protect the photovoltaic panels.

[0008] Further, in some embodiments of the present invention, the speed limiting mechanism includes a damping mechanism, which provides damping to the rotating column to reduce its rotation speed and thus limit its rotation speed. Among them, the damping provided by the damping mechanism to the rotating column increases as the rotation speed of the rotating column increases.

[0009] Further, in some embodiments of the present invention, the size of the photovoltaic panel along the axial direction of the rotating column is 1200 - 2000 mm, and its size along the direction perpendicular to the axial direction of the rotating column is 700 mm - 1300 mm. The damping mechanism allows the rotating column to rotate at an angular velocity of 5 - 50 r / min.

[0010] Further, in some embodiments of the present invention, the speed limiting mechanism includes a locking mechanism, which is used to lock the rotation of the rotating column in scenarios where the wind speed is below 6 m / s or above 50 m / s.

[0011] Further, in some embodiments of the present invention, the hybrid power generation system further includes: an anemometer, which is used to monitor the wind speed of the environment where the photovoltaic panel is located and transmit the wind speed data to the speed limiting mechanism.

[0012] Further, in some embodiments of the present invention, the hybrid power generation system is applied to a snow field scenario, and the photovoltaic panel is arranged at an angle of 80° - 100° with the horizontal plane.

[0013] Further, in some embodiments of the present invention, the power generation assembly includes four photovoltaic panels, and the angle between adjacent photovoltaic panels is 90°, or the power generation assembly includes three photovoltaic panels, and the angle between adjacent photovoltaic panels is 120°.

[0014] Further, in some embodiments of the present invention, the hybrid power generation system further includes: a bottom plate, on which a flange is provided for fixedly installing the power generation system in the environmental scenario; and a column, which is fixedly connected to the bottom plate and is used to cooperate with the bottom plate to support the power generation system, so that the rotating column rotates along the circumferential direction of the column.

[0015] Further, in some embodiments of the present invention, a conductive cable and conductive terminals are provided inside the column for delivering the electric energy generated by the photovoltaic panel and the wind turbine to external devices via the conductive terminals and the conductive cable.

[0016] Further, in some embodiments of the present invention, the hybrid power generation system further includes: an upper limit member provided at the upper edge of the rotating column; and a lower limit member provided at the lower edge of the rotating column for cooperating with the upper limit member to limit the rotating column so that it rotates circumferentially around the column, thereby driving the photovoltaic panel thereon to rotate synchronously. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] After reading the detailed description of the embodiments of the present disclosure in conjunction with the following drawings, the above features and advantages of the present invention can be better understood. In the drawings, the components are not necessarily drawn to scale, and components having similar relevant characteristics or features may have the same or similar reference numerals.

[0018] Figure 1 FIG. shows a perspective structural view of a hybrid power generation system provided according to some embodiments of the present invention.

[0019] Figure 2 FIG. shows a top view of a hybrid power generation system provided according to some embodiments of the present invention.

[0020] REFERENCE NUMERALS:

[0021] 10 Rotating column

[0022] 20 Bracket

[0023] 30 Photovoltaic panel

[0024] 40 Wind turbine

[0025] 50 Base plate

[0026] 60 Column

[0027] 70 Upper limit member

[0028] 80 Lower limit member

[0029] 90 Top cover DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following specific embodiments illustrate the implementation manners of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in combination with preferred embodiments, this does not mean that the features of this invention are limited to this implementation manner. On the contrary, the purpose of introducing the invention in combination with the implementation manner is to cover other alternatives or modifications that may extend based on the claims of the present invention. In order to provide a deep understanding of the present invention, many specific details will be included in the following description. The present invention can also be implemented without using these details. In addition, in order to avoid confusing or obscuring the key points of the present invention, some specific details will be omitted in the description.

[0031] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] In addition, the "upper", "lower", "left", "right", "top", "bottom", "horizontal", and "vertical" used in the following description should be understood as the orientations shown in this section and the related drawings. This relative term is only for convenience of description and does not mean that the device described needs to be manufactured or operated in a specific orientation, so it should not be construed as a limitation to the present invention.

[0033] It can be understood that although terms such as "first", "second", and "third" can be used here to describe various components, regions, layers, and / or parts, these components, regions, layers, and / or parts should not be limited by these terms, and these terms are only used to distinguish different components, regions, layers, and / or parts. Therefore, the first component, region, layer, and / or part discussed below can be called the second component, region, layer, and / or part without departing from some embodiments of the present invention.

[0034] As shown above, in the ultra-high latitude regions of our country, due to its unique geographical environment characteristics, such as high latitude, strong wind speed, low irradiation, thick snow cover, etc., higher requirements are put forward for the acquisition of clean energy. Currently, an energy conversion device for combined wind and solar power generation can adapt to the ultra-high latitude extreme environment and make full use of the clean energy that can be converted by the local environment, such as wind energy and solar energy.

[0035] This device adopts an innovative design concept, using the photovoltaic panels as the blades to drive the wind turbine to rotate simultaneously, achieving the organic combination of photovoltaic power generation and wind power generation. This design enables the energy conversion device to have better adaptability in extreme environments such as low temperature, high wind speed, thick snow cover, and polar night. However, when the system rotates at high speed, it is prone to being damaged due to excessive centrifugal force, and the supplementary effect on photovoltaic power generation is limited.

[0036] In order to overcome the above-mentioned defects existing in the prior art, the present invention provides a hybrid power generation system, which is used to ensure the stable operation of the wind-solar power generation system in extreme environments in ultra-high latitude regions, and at the same time improve the efficiency of photovoltaic power generation, so as to provide a more reliable and efficient way to obtain clean energy in ultra-high latitude regions.

[0037] For details, please refer to Figures 1 to 2 , Figure 1 which shows a three-dimensional structural schematic diagram of the hybrid power generation system provided according to some embodiments of the present invention. Figure 2 which shows a top view schematic diagram of the hybrid power generation system provided according to some embodiments of the present invention.

[0038] As Figure 1 shown, the hybrid power generation system includes a power generation assembly and a wind turbine 40. The power generation assembly includes a rotating column 10, a plurality of brackets 20, and a plurality of photovoltaic panels 30. The plurality of brackets 20 are circumferentially distributed along the rotating column 10, and the plurality of photovoltaic panels 30 are respectively installed on the corresponding brackets 20 and extend radially along the rotating column 10. The photovoltaic panels 30 facing the sun absorb solar energy and convert it into electrical energy.

[0039] In some embodiments, the rotating column 10 can be an octagonal tube, and the plurality of brackets 20 can be connected to the rotating column 10 by welding or bolting.

[0040] As Figure 2 shown, the photovoltaic panel 30 facing the wind direction can drive the rotating column 10 to rotate around the axis under the drive of the wind. Here, the photovoltaic panel 30 serves as the blade of the windmill structure, which can ensure that the wind blowing from any direction will bring a rotating tendency in the same direction to the rotating column 10.

[0041] The wind turbine 40 is used to convert the kinetic energy provided by the rotating column 10 into electrical energy. A speed limiting mechanism is provided on the wind turbine 40 to limit the rotation speed of the rotating column 10 to protect the photovoltaic panels 30. Specifically, since too high a rotation speed of the rotating column 10 will cause too high a rotation speed of the equipment thereon, excessive centrifugal force is likely to damage the wind-solar hybrid power generation system.

[0042] In some embodiments, the speed-limiting mechanism includes a damping mechanism that provides damping to the rotating column 10 to reduce its rotational speed and limit its rotational speed. The damping provided by the damping mechanism to the rotating column 10 increases as the rotational speed of the rotating column 10 increases.

[0043] Please continue to refer to Figure 1 , the size of the photovoltaic panel 30 in the axial direction of the rotating column can be 1200 - 2000 mm, and its size in the direction perpendicular to the axial direction of the rotating column can be 700 mm - 1300 mm. The damping mechanism allows the rotating column 10 to rotate at an angular velocity of 5 - 50 r / min. Here, the rotational angular velocity of the rotating column 10 is preferably 20 r / min. Thus, the linear velocity of the photovoltaic panel 30 rotating around the axis is limited by the angular velocity of the rotating column 10 and the size of the photovoltaic panel 30 to avoid excessive centrifugal force from damaging the hybrid wind-solar power generation system.

[0044] In some embodiments, the speed-limiting mechanism includes a locking mechanism for locking the rotation of the rotating column 10 in scenarios where the wind speed is below 6 m / s or above 50 m / s. That is to say, this locking mechanism ensures that the rotating column 10 rotates within the range of 6 m / s - 50 m / s of wind speed to supplement the photovoltaic power generation system. Here, when the wind speed is too high, the rotating column 10 still rotates only at the maximum speed limit or the preferred rotational speed (for example: 50 r / min or 20 r / min) to avoid excessive centrifugal force from damaging the hybrid wind-solar power generation system.

[0045] Specifically, the wind speed is directly related to the rotational speed of the rotating column 10, but it is not a linear relationship. Instead, it follows the variation law of an S-shaped curve. When the wind speed increases, the rotational speed of the rotating column 10 will also increase accordingly. However, when the wind speed reaches a preset threshold (for example: 50 m / s), the rotational speed of the rotating column 10 will reach the maximum value, and this threshold is related to the design of the wind turbine 40 and the size of the photovoltaic panel 30. In addition, the size of the photovoltaic panel 30 also affects the rotational speed of the rotating column 10. Under the condition of a certain wind speed, the larger the size of the photovoltaic panel 30, the slower the rotational speed. For example, the photovoltaic panel 30 of a 1.5 MW wind turbine weighs about 6 tons and has a rotational speed of 18 r / min. When the wind speed exceeds the limited speed, the rotating column 10 still rotates only at the maximum speed limit or the preferred rotational speed to protect itself from damage. Thus, when it is night or in a polar night state, even if the wind force is large, the system can still rely on this function to safely obtain energy to a certain extent.

[0046] In some embodiments, the hybrid power generation system further includes: an anemometer for monitoring the wind speed of the environment where the photovoltaic panel 30 is located and transmitting the wind speed data to the speed-limiting mechanism.

[0047] In some embodiments, the hybrid power generation system is applied to a snowy scene, and the photovoltaic panel 30 is arranged at an angle of 80° to 100° with the horizontal plane. Preferably, the angle can be 90 degrees to avoid shading caused by snow accumulation, so as to ensure full utilization of wind energy resources.

[0048] Specifically, according to the power generation simulation results of the PVSYT software, in high-latitude environments such as the Antarctic and Arctic Circles, the optimal inclination angle of the photovoltaic panel 30 with the largest power generation is close to 90°. At the same time, due to the year-round snow in polar regions, the reflection is relatively large, so the photovoltaic modules that place the photovoltaic panels 30 in four different directions are more conducive to fully absorbing light energy. In addition, photovoltaic modules installed nearly vertically can avoid being blocked by snow, thereby ensuring power generation.

[0049] In some embodiments, the power generation assembly may include four photovoltaic panels 30, and the angle between adjacent photovoltaic panels 30 is 90°. The power generation assembly may include three photovoltaic panels 30, and the angle between adjacent photovoltaic panels 30 is 120°.

[0050] In addition, the hybrid power generation system also includes a base plate 50 and a column 60, which serve as a supporting unit of the hybrid power generation system and support the equipment thereon. Specifically, a flange may be provided on the base plate 50 for fixing the power generation system in an environmental scene. The column 60 is fixedly connected to the base plate 50 (e.g., clamped) to cooperate with the base plate 50 to support the power generation system so that the rotating column 10 rotates circumferentially along the column 60.

[0051] Furthermore, conductive cables and conductive terminals are provided inside the column 60 for transmitting the electric energy generated by the photovoltaic panel 30 and the wind turbine 40 to external equipment via the conductive terminals and the conductive cables.

[0052] Furthermore, the external device can be an energy storage device, thereby serving as an energy supply device for polar research station-related equipment, and can also serve as a clean energy source for ultra-high latitude residents such as the Eskimos.

[0053] In addition, the hybrid power generation system further includes: an upper limit member 70, which is disposed on the upper edge of the rotating column 10. A lower limit member 80, which is disposed on the lower edge of the rotating column 10, is used to cooperate with the upper limit member 70 to limit the rotating column 10 so that it rotates around the column 60, thereby driving the photovoltaic panel 30 thereon to rotate synchronously.

[0054] In addition, the hybrid power generation system also includes a top cover 90, and the top cover 90 can also be connected to the column 60 via a flange, so that meteorological equipment such as a thermometer can be installed on the top of the system, thereby expanding the meteorological related functions of the system.

[0055] In summary, the hybrid power generation system provided by the present invention can be used to ensure the stable operation of the wind-solar power generation system in extremely high-latitude regions under extreme environments, and at the same time improve the efficiency of photovoltaic power generation, thereby providing a more reliable and efficient way to obtain clean energy in extremely high-latitude regions.

[0056] Although the above methods are illustrated and described as a series of actions for simplicity of explanation, it should be understood and appreciated that these methods are not limited by the order of the actions, because according to one or more embodiments, some actions may occur in a different order and / or concurrently with other actions not illustrated and described herein but understood by those skilled in the art.

[0057] The foregoing description of the disclosure has been provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hybrid power generation system, characterized in that: include: A power generation assembly, comprising a rotating column, a plurality of brackets and a plurality of photovoltaic panels, wherein the plurality of brackets are distributed along the circumference of the rotating column, the plurality of photovoltaic panels are respectively mounted on the corresponding brackets and extend along the radial direction of the rotating column, the photovoltaic panels facing the sun absorb solar energy and convert it into electrical energy, and the photovoltaic panels facing the wind direction drive the rotating column to rotate around the axis under the drive of the wind; and A wind turbine is used to convert the kinetic energy provided by the rotating column into electrical energy, wherein the wind turbine is provided with a speed limiting mechanism for limiting the rotation speed of the rotating column to protect the photovoltaic panel.

2. The hybrid power generation system according to claim 1, characterized in that: The speed limiting mechanism includes a damping mechanism, which provides damping to the rotating column to reduce its rotation speed so as to limit its rotation speed, wherein the damping provided by the damping mechanism to the rotating column increases as the rotation speed of the rotating column increases.

3. The hybrid power generation system according to claim 2, characterized in that: The size of the photovoltaic panel along the axis of the rotating column is 1200-2000 mm, and the size of the photovoltaic panel along the direction perpendicular to the axis of the rotating column is 700 mm-1300 mm. The damping mechanism allows the rotating column to rotate at an angular speed of 5-50 r / min.

4. The hybrid power generation system according to claim 1, characterized in that: The speed limiting mechanism includes a locking mechanism for locking the rotation of the rotating column in a scenario where the wind speed is below 6 m / s or above 50 m / s.

5. The hybrid power generation system according to claim 4, characterized in that: Also includes: The anemometer is used to monitor the wind speed in the environment where the photovoltaic panel is located, and transmit the wind speed data to the speed limiting mechanism.

6. The hybrid power generation system according to claim 1, characterized in that: The hybrid power generation system is applied to snowy scenes, and the photovoltaic panels are arranged at an angle of 80° to 100° with the horizontal plane.

7. The hybrid power generation system according to claim 1, characterized in that: The power generation assembly includes four photovoltaic panels, and the angle between adjacent photovoltaic panels is 90°, or The power generation component includes three photovoltaic panels, and the angle between adjacent photovoltaic panels is 120°.

8. The hybrid power generation system according to claim 1, characterized in that: Also includes: A bottom plate, on which a flange is provided, for fixing the power generation system in an environmental scene; as well as The column is fixedly connected to the base plate and is used to cooperate with the base plate to support the power generation system so that the rotating column can rotate along the circumference of the column.

9. The hybrid power generation system according to claim 8, characterized in that: Conductive cables and conductive terminals are arranged inside the column, which are used to transmit the electric energy generated by the photovoltaic panel and the wind turbine to external equipment via the conductive terminals and the conductive cables.

10. The hybrid power generation system according to claim 8, characterized in that: Also includes: An upper limit member, arranged on the upper edge of the rotating column; as well as The lower limit piece is arranged at the lower edge of the rotating column, and is used to cooperate with the upper limit piece to limit the rotating column, so that it can rotate around the circumference of the column, thereby driving the photovoltaic panel thereon to rotate synchronously.

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