Intelligent micro-grid wind generating set

Abstract

The intelligent micro-grid wind generating set comprises a generating set shell, and a methanol range extender, a lithium iron phosphate battery, an all-in-one fan electric control host, a driving motor, a speed reducer, a vertical gear box and a semi-direct-drive medium-speed permanent magnet wind driven generator which are arranged in the generating set shell, the methanol range extender, the lithium iron phosphate battery and the driving motor are connected with the all-in-one fan electric control host and controlled by the all-in-one fan electric control host, the driving motor is in transmission connection with the speed reducer, the speed reducer is in transmission connection with the vertical gear box through the wind power transmission main shaft, and the vertical gear box is in transmission connection with the semi-direct-drive medium-speed permanent magnet wind driven generator. The semi-direct-drive medium-speed permanent magnet wind driven generator is connected with the wind turbine generator main control system; the efficient methanol range extender, the lithium iron phosphate battery, the all-in-one electric controller, the driving motor, the speed reducer, the vertical gear box, the semi-direct-drive medium-speed permanent magnet wind driven generator and the like are used for forming a high-voltage framework, and the performance of large torque, low speed ratio and high power can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation, and in particular to an intelligent microgrid wind turbine generator set. Background Art

[0002] The existing wind turbines in the world are devices that convert wind energy into electrical energy and are widely used in the field of renewable energy. According to different designs, structures and application scenarios, there are the following main classification methods and corresponding wind turbine types:

[0003] 1. Classification by number of leaves:

[0004] (1) Single-blade wind turbine: This type of wind turbine has only one blade and is usually used in small or experimental projects.

[0005] (2) Two-blade wind turbine: This is the most common type and is widely used in commercial and residential projects.

[0006] (3) Three-blade wind turbine: This design can provide better balance and lower noise levels, but the cost is high.

[0007] 2. Classification by the direction of the rotation axis of the wind turbine:

[0008] (1) Horizontal axis wind turbine (HAWT): This is the most common type, with its axis of rotation parallel to the ground. Most commercial wind turbines belong to this category.

[0009] (2) Vertical axis wind turbine (VAWT): The rotating axis of this type of wind turbine is perpendicular to the ground and is suitable for urban environments or areas with limited space.

[0010] 3. Classification by wind turbine size:

[0011] (1) Small wind turbines: usually used in residential or small commercial projects, with power ranging from a few hundred watts to a few kilowatts.

[0012] (2) Medium-sized wind turbines: Suitable for medium-sized projects such as farms or small communities, with power ranging from a few kilowatts to several hundred kilowatts.

[0013] (3) Large wind turbines: used in large commercial projects such as wind power plants, with power ranging from hundreds of kilowatts to tens of megawatts.

[0014] 4. Classification by installation method of wind turbines:

[0015] (1) Ground-mounted wind turbines: This is the most common installation method, where the wind turbine is installed directly on the ground.

[0016] (2) Tower mounted wind turbines: Wind turbines are mounted on tall towers to obtain better wind speeds and higher power generation efficiency.

[0017] (3) Floating wind turbines: These wind turbines are installed offshore and are suitable for deep water areas and can utilize more stable wind resources.

[0018] 5. Classification by wind turbine control technology:

[0019] (1) Fixed speed wind turbine: The speed of this type of wind turbine is fixed and is suitable for simple application scenarios.

[0020] (2) Variable speed wind turbine: This type of wind turbine can adjust its speed according to changes in wind speed to improve power generation efficiency and reduce wear.

[0021] 6. Classification by grid-connected wind turbines:

[0022] (1) Independently operated wind turbines: These wind turbines are not connected to the power grid and are usually used in remote areas or as a backup power source.

[0023] (2) Grid-connected wind turbine: This type of wind turbine is connected to the power grid and can transmit the generated electricity to the grid.

[0024] (3) The design and selection of wind turbines depends on many factors, including geographical location, wind speed, space limitations, cost and environmental impact.

[0025] The common characteristics of the above different wind turbines are that they must have a certain wind speed to generate wind energy. They have the disadvantages of occupying a large land / sea area, inconvenient transportation, long approval process, high base construction cost, simple function, high maintenance cost and installation cost, great influence of the natural environment, and low wind energy benefits. Therefore, designing a wind turbine that can solve the above problems is an urgent problem that technicians in related fields need to solve. Summary of the invention

[0026] To solve the above technical problems, the technical solution provided by the present invention is: an intelligent microgrid wind turbine generator set, comprising a generator set housing and a methanol range extender, a lithium iron phosphate battery, an all-in-one wind turbine electronic control host, a drive motor, a reducer, a vertical gearbox and a semi-direct drive medium-speed permanent magnet wind turbine generator arranged in the generator set housing; the methanol range extender, the lithium iron phosphate battery, the drive motor and the all-in-one wind turbine electronic control host are connected and controlled by the all-in-one wind turbine electronic control host, the drive motor is transmission-connected to the reducer, the reducer is transmission-connected to the vertical gearbox through a wind power transmission main shaft, the vertical gearbox is transmission-connected to the semi-direct drive medium-speed permanent magnet wind turbine generator, the semi-direct drive medium-speed permanent magnet wind turbine generator is connected to a wind turbine set main control system, the wind turbine set main control system transmits power to the intelligent microgrid control system through a converter and a transformer, and the intelligent microgrid control system transmits power to the user end, and the transformer supplies power to the all-in-one wind turbine electronic control host through a wind power power supply.

[0027] Preferably, the generator set casing is divided into a single-layer frame, a double-layer frame and a triple-layer frame from bottom to top, and the methanol range extender, lithium iron phosphate battery, all-in-one wind turbine electronic control host, transformer, and intelligent microgrid control system are arranged in the single-layer frame, and the number of the methanol range extender, lithium iron phosphate battery, and all-in-one wind turbine electronic control host is one group or more.

[0028] Preferably, a gearbox mounting bracket is arranged at the center of the two-layer frame, the vertical gearbox is arranged in the gearbox mounting bracket, and a turntable inner-tooth wind turbine base which can rotate around the gearbox mounting bracket is arranged around the gearbox mounting bracket, a reducer is arranged at the contact point between the outer edge of the turntable inner-tooth wind turbine base and the two-layer frame, the top input end of the vertical gearbox is connected to the wind power transmission main shaft, and the output end of the vertical gearbox is connected to a semi-direct drive medium-speed permanent magnet wind turbine generator.

[0029] Preferably, the reducer input end is connected to the driving motor, and the outer shell of the other end of the reducer is rotatably connected to the second-layer frame through a four-point contact ball base bearing.

[0030] Preferably, the bottom of the wind power transmission main shaft is connected to the gear box mounting bracket via a second four-point contact ball base bearing.

[0031] Preferably, a converter and a wind turbine main control system are also provided on the turntable internal gear wind turbine base.

[0032] Preferably, the wind power transmission main shaft extends into the three-layer frame and is connected to a semi-direct drive medium-speed permanent magnet wind generator.

[0033] Preferably, the wind turbine main control system includes a monitoring system, a main control system, an intelligent high-voltage three-motor wind turbine electronic control system and a frequency conversion system.

[0034] The advantages of the present invention compared with the prior art are: the present invention uses an intelligent and efficient methanol range extender, a lithium iron phosphate battery, an all-in-one electronic control, a drive motor, a reducer, a four-point contact ball turntable internal gear wind turbine bearing, a transmission main shaft, a vertical gearbox, a semi-direct drive medium-speed permanent magnet wind turbine generator, and a wind turbine main control system to form a high-voltage structure, which can achieve high torque, low speed ratio, and high power performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a framework diagram of a smart microgrid wind turbine generator set of the present invention.

[0036] Figure 2 It is a schematic diagram of a layer structure in a smart microgrid wind turbine generator set of the present invention.

[0037] Figure 3 It is a cross-sectional schematic diagram of a layer frame 1-1 in a smart microgrid wind turbine generator set of the present invention.

[0038] Figure 4 It is a cross-sectional schematic diagram of a layer frame 2-2 in a smart microgrid wind turbine generator set of the present invention.

[0039] Figure 5 It is a structural schematic diagram of a two-layer frame in a smart microgrid wind turbine generator set of the present invention.

[0040] Figure 6 It is a cross-sectional schematic diagram of a second-layer frame 3-3 in a smart microgrid wind turbine generator set of the present invention.

[0041] Figure 7 It is a cross-sectional schematic diagram of a two-layer frame 4-4 in a smart microgrid wind turbine generator set of the present invention.

[0042] Figure 8 The invention discloses an installation schematic diagram of a four-point contact ball base bearing 1 and a four-point contact ball base bearing 2 in a smart microgrid wind turbine generator set.

[0043] Fig. 9 It is a schematic diagram of a three-layer structure in a smart microgrid wind turbine generator set of the present invention.

[0044] Fig.10 It is an external schematic diagram of a semi-direct-drive medium-speed permanent magnet wind generator in a smart microgrid wind generator set of the present invention. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0046] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0047] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0048] In the description of the embodiments of the present invention, "plurality" means at least 2.

[0049] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] Example:

[0051] A smart microgrid wind turbine generator set, comprising a generator set housing 1, and a methanol range extender 2, a lithium iron phosphate battery 3, an all-in-one wind turbine electronic control host 4, a drive motor 5, a reducer 6, a vertical gearbox 7, and a semi-direct drive medium-speed permanent magnet wind turbine generator 8 arranged in the generator set housing 1;

[0052] The methanol range extender 2, the lithium iron phosphate battery 3, the drive motor 5 are connected to the all-in-one wind turbine electronic control host 4 and are controlled by the all-in-one wind turbine electronic control host 4. The drive motor 5 is connected to the reducer 6 in transmission connection. The reducer 6 is connected to the vertical gear box 7 in transmission connection through the wind power transmission main shaft 9. The vertical gear box 7 is connected to the semi-direct drive medium-speed permanent magnet wind turbine generator 8 in transmission connection. The semi-direct drive medium-speed permanent magnet wind turbine generator 8 is connected to the wind turbine main control system 10. The wind turbine main control system 10 transmits power to the intelligent microgrid control system 13 through the converter 11 and the transformer 12, and the power is transmitted to the user end 14 by the intelligent microgrid control system 13. The transformer 12 supplies power to the all-in-one wind turbine electronic control host 4 through the wind power supply 15. The wind turbine main control system 10 includes a monitoring system, a main control system, an intelligent high-voltage three-motor wind turbine electronic control system and a frequency conversion system.

[0053] The generator set housing 1 is divided into a first-layer frame 101, a second-layer frame 102 and a third-layer frame 103 from bottom to top. The methanol range extender 2, the lithium iron phosphate battery 3, the all-in-one wind turbine electronic control host 4 and the transformer 12, and the intelligent microgrid control system 13 are arranged in the first-layer frame 101. The number of the methanol range extender 2, the lithium iron phosphate battery 3, and the all-in-one wind turbine electronic control host 4 is one group or multiple groups.

[0054] A gearbox mounting bracket 104 is arranged at the center of the two-layer frame 102, and the vertical gearbox 7 is arranged in the gearbox mounting bracket 104. A turntable inner-tooth wind turbine base 105 which can rotate around the gearbox mounting bracket 104 is arranged around the gearbox mounting bracket 104. A reducer 6 is arranged at the contact point between the outer edge of the turntable inner-tooth wind turbine base 105 and the two-layer frame 102, and the top input end of the vertical gearbox 7 is connected to the wind power transmission main shaft 9, and the output end of the vertical gearbox 7 is connected to the semi-direct drive medium-speed permanent magnet wind turbine 8; the input end of the reducer 6 is connected to the drive motor 5, and the outer shell of the other end of the reducer 6 is rotatably connected to the two-layer frame 102 through a four-point contact ball base bearing 16; the bottom of the wind power transmission main shaft 9 is connected to the gearbox mounting bracket 104 through a four-point contact ball base bearing 2 17; a transformer 12 and a wind turbine main control system 10 are also arranged on the turntable inner-tooth wind turbine base 105.

[0055] The wind power transmission main shaft 9 extends into the three-layer frame 103 and is connected to the semi-direct drive medium-speed permanent magnet wind turbine 8 .

[0056] The present invention uses an intelligent and efficient methanol range extender, a lithium iron phosphate battery 3, an all-in-one wind turbine electronic control host 4, a drive motor, a reducer, a four-point contact ball turntable internal gear wind turbine bearing, a wind turbine transmission main shaft 9, a vertical gear box 7, a semi-direct drive medium-speed permanent magnet wind turbine generator 8, and a wind turbine set main control system 10 to form a high-voltage frame; it can achieve high torque, low speed ratio, and high power performance.

[0057] Among them, the drive motor is a 300KW-360KW drive motor; the reducer is a reducer with a speed ratio of 10.32-13.9; the four-point contact ball turntable internal gear wind turbine base bearings are selected to be Φ4m and Φ18m four-point contact ball turntable internal gear wind turbine base bearings; the wind turbine transmission main shaft is selected to be a Φ18m high 11.6m wind turbine transmission main shaft; the vertical gearbox is selected to be a 3MW-38MW vertical gearbox;

[0058] The key to realizing the complete set of intelligent wind power generation is the production capacity of high-end bearing steel. Each intelligent wind power generation base bearing requires about 120 tons, and each production line (1,000 sets) uses 120,000 tons of steel. The present invention introduces domestic high-end (bearing steel) special steel enterprises to produce special steel in a partnership model. The plant and equipment investment, green electricity and raw materials required for production are supplied by Bohe Wind Power Group, and the special steel enterprises are responsible for producing qualified high-end bearing steel, and the income is based on the company's existing profit (fixed profit).

[0059] The methanol range extender in the present invention is a product of Geely Group; the lithium iron phosphate battery is a product of CATL; the all-in-one electronic control is developed by Huawei, BYD, and Huichuan Technology; the servo drive motor is developed; the reducer with a speed ratio of 10.32-13.9 of 300KW-360KW is developed; the Φ18m and Φ4m wind power bearings are introduced from Luoyang Bearing and Xinlianqiang Co., Ltd.; the vertical gearbox is introduced from NGC and Chongchi; the transmission main shaft is introduced from Jinlei and Tongyu; the 25MW and 26MW semi-direct drive medium-speed permanent magnet wind turbines are introduced from Dongfang Electric, Hunan Electric Group, and CRRC Electromechanical; the wind turbine main control system is introduced from Goldwind Technology, CRRC Electromechanical Research Institute, Dongfang Electric Group, and Sungrow Power Supply; the smart wind power microgrid is introduced from Xuji Group, ABB, GE, Tsinghua University, and Tianjin University; through the entire industrial chain from high-end bearing steel to the installation, commissioning, operation, and maintenance of wind power generation equipment throughout the entire life cycle, clean energy is provided to global customers.

[0060] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A smart microgrid wind turbine generator set, characterized in that: It includes a generator housing and a methanol range extender, a lithium iron phosphate battery, an all-in-one wind turbine electronic control host, a drive motor, a reducer, a vertical gearbox and a semi-direct drive medium-speed permanent magnet wind turbine generator arranged in the generator housing; The methanol range extender, lithium iron phosphate battery, drive motor and all-in-one wind turbine electronic control host are connected and controlled by the all-in-one wind turbine electronic control host, the drive motor is connected to the reducer, the reducer is connected to the vertical gear box through the wind power transmission main shaft, the vertical gear box is connected to the semi-direct drive medium-speed permanent magnet wind turbine generator, the semi-direct drive medium-speed permanent magnet wind turbine generator is connected to the wind turbine main control system, the wind turbine main control system transmits power to the smart microgrid control system through the converter and transformer, and the smart microgrid control system transmits power to the user end, and the transformer supplies power to the all-in-one wind turbine electronic control host through the wind power supply.

2. The smart microgrid wind turbine generator set according to claim 1, characterized in that: The generator set shell is divided into a single-layer frame, a second-layer frame and a third-layer frame from bottom to top. The methanol range extender, lithium iron phosphate battery, all-in-one wind turbine electronic control host, transformer, and intelligent microgrid control system are arranged in the single-layer frame. The number of the methanol range extender, lithium iron phosphate battery, and all-in-one wind turbine electronic control host is one group or more.

3. The smart microgrid wind turbine generator set according to claim 1, characterized in that: A gearbox mounting bracket is arranged at the center of the second-layer frame, the vertical gearbox is arranged in the gearbox mounting bracket, a turntable inner-tooth wind turbine base which can rotate around the gearbox mounting bracket is arranged around the gearbox mounting bracket, a reducer is arranged at the contact between the outer edge of the turntable inner-tooth wind turbine base and the second-layer frame, the top input end of the vertical gearbox is connected to the wind power transmission main shaft, and the output end of the vertical gearbox is connected to the semi-direct drive medium-speed permanent magnet wind turbine generator.

4. The smart microgrid wind turbine generator set according to claim 1, characterized in that: The input end of the reducer is connected to the driving motor, and the outer shell of the other end of the reducer is rotatably connected to the second-layer frame through a four-point contact ball base bearing.

5. The smart microgrid wind turbine generator set according to claim 1, characterized in that: The bottom of the wind power transmission main shaft is connected to the gear box mounting bracket through a four-point contact ball base bearing 2.

6. The smart microgrid wind turbine generator set according to claim 1, characterized in that: The base of the rotary disc inner-tooth wind turbine is also provided with a converter and a main control system of the wind turbine set.

7. The smart microgrid wind turbine generator set according to claim 1, characterized in that: The wind power transmission main shaft extends into the three-layer frame and is connected to the wind power generator blades.

8. The smart microgrid wind turbine generator set according to claim 1, characterized in that: The wind turbine main control system includes a monitoring system, a main control system, an intelligent high-voltage three-motor wind turbine electronic control system and a frequency conversion system.

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