Ring type segmented asynchronous wind power generation device

Abstract

The utility model discloses a ring-type segmented asynchronous wind power generation device, which relates to the technical field of wind power generation and comprises a rotating unit, a wind power generation unit, a wind power generation unit and a wind power generation unit, the rotating unit comprises a ring-shaped rotor and a plurality of blades respectively and fixedly connected with the ring-shaped rotor, and the axis of the ring-shaped rotor is vertical; the fixing unit comprises a supporting frame used for supporting the annular rotor, the annular rotor is in running fit with the supporting frame, a plurality of stator coils distributed in the circumferential direction of the annular rotor are further fixedly arranged on the supporting frame, and when the annular rotor is driven by the blades to rotate relative to the supporting frame, the stator coils are wound around the annular rotor. Induced current can be generated in the stator coil. The annular rotor is driven to rotate by the fan blades, so that a smaller design volume can be achieved, the structure is simple, and the cost and the transportation and installation difficulty are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a ring-type segmented asynchronous wind power generation device. Background Art

[0002] Most of the existing wind turbines still use traditional structural forms, such as the three-blade form of the horizontal axis and the Darrieus type and H-type of the vertical axis. Because the unit structure is basically an independent wind wheel that drives the generator to rotate and generate electricity, at the same time, whether it is a large-capacity wind turbine in the horizontal axis form or a vertical axis form, its large blades, high tower, single large transmission chain, single generator and other characteristics make the overall cost of existing wind turbines generally high and the cost performance is low; at the same time, wind turbines with complex structures and large volumes also have problems such as difficult transportation, complex installation and high cost during transportation and installation. Utility Model Content

[0003] The purpose of the utility model is to provide a ring-type segmented asynchronous wind power generation device to solve the problems existing in the above-mentioned prior art and reduce the cost and the difficulty of transportation and installation.

[0004] To achieve the above purpose, the utility model provides the following solutions:

[0005] The utility model provides a ring-type segmented asynchronous wind power generation device, comprising:

[0006] A rotating unit, the rotating unit comprising an annular rotor and a plurality of blades respectively connected to the annular rotor, the annular rotor is made of metal, and the axis of the annular rotor is vertical;

[0007] A fixing unit, wherein the fixing unit includes a support frame for supporting the annular rotor, and the annular rotor rotates in cooperation with the support frame. The support frame is also fixed with a plurality of stator coils distributed along the circumference of the annular rotor. When the annular rotor rotates relative to the support frame driven by the blades, an induced current can be generated in the stator coils.

[0008] Preferably, the support frame is provided with a plurality of support structures distributed along the circumference of the annular rotor, and the annular rotor is in rolling cooperation with each of the support structures.

[0009] Preferably, each of the supporting structures includes a fixed bracket and a plurality of supporting rollers mounted on the fixed bracket, and the bottom surface of the annular rotor is in rolling cooperation with each of the supporting rollers; a plurality of limiting rollers are also installed below the annular rotor, and all of the limiting rollers are evenly distributed along the circumference of the annular rotor and are divided into two inner and outer circles, the limiting rollers located in the inner circle are used for rolling cooperation with the inner side wall of the fixed bracket, and the limiting rollers located in the outer circle are used for rolling cooperation with the outer side wall of the fixed bracket.

[0010] Preferably, the annular rotor is divided into a horizontal portion and a vertical portion, both of which are annular, from bottom to top; the supporting structure includes a fixed bracket, a lower roller and a plurality of upper rollers, the lower roller and all the upper rollers are mounted on the fixed bracket, the lower roller is in rolling cooperation with the bottom surface of the horizontal portion, all the upper rollers are distributed on the inner and outer sides of the horizontal portion, and the upper roller located on the inner side of the horizontal portion is in rolling cooperation with the inner side of the horizontal portion, and the upper roller located on the outer side of the horizontal portion is in rolling cooperation with the outer side of the horizontal portion.

[0011] Preferably, all of the stator coils are arranged on the fixing bracket, and each of the fixing brackets is provided with the stator coil.

[0012] Preferably, the longitudinal section at any point on the annular rotor is L-shaped.

[0013] Preferably, the blades are arranged vertically.

[0014] Preferably, the blades are lift-type blades.

[0015] Preferably, all of the blades are located inside the annular rotor.

[0016] Compared with the prior art, the utility model has achieved the following technical effects:

[0017] The annular segmented asynchronous wind power generation device of the utility model is a wind power generator set in the form of a vertical axis. Since the annular rotor is driven to rotate by the wind blades, a smaller design volume can be achieved, the structure is simple, and the cost, transportation and installation difficulty are reduced.

[0018] Furthermore, the utility model captures wind energy through lift-type blades to generate mechanical energy in the rotation direction, driving the annular rotor to rotate. When the annular rotor rotates, since the stator coil is fixed, the annular rotor first cuts the magnetic flux lines of the rotating magnetic field generated by the stator coil to generate induced current and magnetic field, and the stator coil then cuts the magnetic flux lines of the induced magnetic field of the annular rotor, thereby generating an induced current in the stator coil, and the rotational mechanical energy of the annular rotor is converted into electrical energy output to achieve power generation.

[0019] Furthermore, in the utility model, the ring-shaped rotor is limited by the limiting roller or the upper roller, so that the stability of the ring-shaped rotor during rotation can be ensured, thereby ensuring the stability of the power generation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a structural schematic diagram of the first embodiment of the ring-type segmented asynchronous wind power generation device of the utility model;

[0022] Figure 2 It is a partial structural schematic diagram of the first embodiment of the ring-type segmented asynchronous wind power generation device of the utility model;

[0023] Figure 3 It is a partial structural schematic diagram of the first embodiment of the ring-type segmented asynchronous wind power generation device of the utility model;

[0024] Figure 4 It is a partial structural schematic diagram of the second embodiment of the ring-type segmented asynchronous wind power generation device of the utility model;

[0025] Among them, 100, annular segmented asynchronous wind power generation device; 1, blades; 2, annular rotor; 3, support frame; 4, support structure; 401, support roller; 402, limit roller; 403, fixed bracket; 404, shock-absorbing pad; 405, stator coil; 406, lower roller; 407, upper roller. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The purpose of the utility model is to provide a ring-type segmented asynchronous wind power generation device to solve the problems existing in the above-mentioned prior art and reduce the cost and the difficulty of transportation and installation.

[0028] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] Embodiment 1

[0030] like Figures 1 to 3 As shown, this embodiment provides a ring-type segmented asynchronous wind power generation device 100, comprising:

[0031] The rotating unit comprises an annular rotor 2 and a plurality of blades 1 respectively connected to the annular rotor 2. The material of the annular rotor 2 is metal, and the axis of the annular rotor 2 is vertical.

[0032] The fixing unit includes a support frame 3 for supporting the annular rotor 2, and the annular rotor 2 rotates in cooperation with the support frame 3. A plurality of stator coils 405 distributed along the circumference of the annular rotor 2 are fixed on the support frame 3. When the annular rotor 2 rotates relative to the support frame 3 driven by the blades 1, an induced current can be generated in the stator coil 405.

[0033] The specific working principle of the ring-type segmented asynchronous wind power generation device 100 of this embodiment is as follows:

[0034] First, each stator coil 405 needs to be connected to the power grid and a three-phase alternating current is passed through it, so that each stator coil 405 generates a changing first magnetic field;

[0035] The annular segmented asynchronous wind power generation device 100 of this embodiment captures wind energy through the blades 1 during operation. Since the annular rotor 2 and the support frame 3 are rotationally matched, the blades 1 can drive the annular rotor 2 to perform a rotational motion. When the annular rotor 2 rotates, since the stator coil 405 is fixed, the magnetic field lines of the first magnetic field generated by each stator coil 405 will be cut inside the annular rotor 2, thereby generating an induced electromotive force in the conductor of the annular rotor 2, causing current to flow inside the annular rotor 2; the current generated in the annular rotor 2 interacts with the stator magnetic field to push the annular rotor 2 to continue rotating; in this process, the stator coil 405 will be affected by the magnetic field generated by the annular rotor 2, generating an induced electromotive force, and then generating electrical energy output; therefore, current can eventually be output through the stator coil 405.

[0036] The annular rotor 2 generates current and magnetic field through induced electromotive force, and interacts with the magnetic field of the stator 405, thereby realizing the conversion of mechanical energy into electrical energy. The stator coil 405 is responsible for collecting and outputting the generated electrical energy.

[0037] It is worth noting that during the rotation of the annular rotor 2, if the rotation speed of the annular rotor 2 is less than the rotation speed of the first magnetic field formed by the stator coil 405, the annular segmented asynchronous wind power generation device 100 is in a motor state; if the rotation speed of the annular rotor 2 is greater than the rotation speed of the first magnetic field formed by the stator coil 405, the annular segmented asynchronous wind power generation device 100 is in a generator state. Therefore, during the working process, the frequency of the three-phase electricity passed into the stator coil 405 can be artificially reduced to reduce the rotation speed of the first magnetic field formed by the stator coil 405, so that the annular segmented asynchronous wind power generation device 100 is in a power generation state; the relevant control theory and technology are widely used in power generation devices using the squirrel cage asynchronous generator power generation principle. The technical personnel can apply the specific working principle of the annular segmented asynchronous wind power generation device 100 of the present embodiment based on the existing technology and the present embodiment to the present embodiment, and the relevant control part is not the focus of the utility model of the present invention, so the specific control method in the power generation process is no longer elaborated in this embodiment.

[0038] The blades 1 in this embodiment are smaller than the blades 1 in the existing wind turbines, and are convenient to transport and install. The annular rotor 2 can also be manufactured in sections and then assembled into a whole for installation, which also facilitates transportation and installation and reduces costs.

[0039] In this embodiment, the specific scheme for realizing the rotational cooperation between the annular rotor 2 and the support frame 3 is as follows:

[0040] The support frame 3 is provided with a plurality of support structures 4 distributed along the circumference of the annular rotor 2, and the annular rotor 2 is in rolling cooperation with each support structure 4; each support structure 4 includes a fixed support 403 and a plurality of support rollers 401 installed on the fixed support 403, and the bottom surface of the annular rotor 2 is in rolling cooperation with each support roller 401; a plurality of limiting rollers 402 are also installed below the annular rotor 2, and all limiting rollers 402 are evenly distributed along the circumference of the annular rotor 2 and are divided into two inner and outer circles, the limiting rollers 402 located in the inner circle are used for rolling cooperation with the inner side wall of the fixed support 403, and the limiting rollers 402 located in the outer circle are used for rolling cooperation with the outer side wall of the fixed support 403. The existence of the limiting rollers 402 can limit the horizontal position of the annular rotor 2, prevent the annular rotor 2 from being offset in the horizontal direction, ensure the stability of the annular rotor 2 during rotation, and thus ensure the stability of the power generation process.

[0041] In the optional solution of this embodiment, preferably, all stator coils 405 are arranged on the fixed bracket 403, and each fixed bracket 403 is provided with a stator coil 405. It is worth noting that in practical applications, the specific setting position of the stator coil 405 can be adaptively adjusted as needed, as long as the stator coil 405 is fixed and when the annular rotor 2 rotates, the stator coil 405 cuts the magnetic field of the annular rotor 2 to generate an induced current for power generation.

[0042] In an optional solution of this embodiment, it is more preferred that the blade 1 is arranged vertically.

[0043] Among the optional schemes of this embodiment, it is more preferred that blade 1 adopts a lift-type blade. The advantages of the lift-type blade are: the tip speed ratio of the lift-type blade is relatively high, about 2.5 to 4 times the wind speed, which also leads to higher conversion efficiency, which is suitable for scenarios requiring higher power generation; the structure of the lift-type blade is more reasonable and more suitable for the application of large units; the efficiency of the lift-type blade will increase as the wind speed increases.

[0044] In addition, a shock-absorbing pad 404 is sandwiched between the fixed bracket of the supporting structure and the supporting frame 3 to reduce vibration during operation.

[0045] In the optional scheme of this embodiment, it is more preferred that all the blades 1 are located on the inner side of the annular rotor 2; so that the blades 1 are located on the inner side of the annular rotor 2, on the one hand, the annular segmented asynchronous wind power generation device 100 of this embodiment can occupy a smaller space, and on the other hand, when the blades 1 rotate, they also rotate on the inner side of the annular rotor 2, which is not easy to interfere with other external objects, thereby improving the safety of use.

[0046] Embodiment 2

[0047] like Figure 4 As shown, this embodiment provides a ring-type segmented asynchronous wind power generation device 100. The structure and working principle of the ring-type segmented asynchronous wind power generation device 100 of this embodiment are basically the same as those of the ring-type segmented asynchronous wind power generation device 100 of the first embodiment. The difference only lies in the structure of the annular rotor 2 and the support structure 4, which are specifically as follows:

[0048] In this embodiment, the annular rotor 2 is divided into a horizontal portion and a vertical portion, both of which are annular, from bottom to top; the supporting structure 4 includes a fixed bracket 403, a lower roller 406 and a plurality of upper rollers 407, the lower roller 406 and all the upper rollers 407 are installed on the fixed bracket 403, the lower roller 406 rolls with the bottom surface of the horizontal portion, all the upper rollers 407 are distributed on the inner and outer sides of the horizontal portion, and the upper roller 407 located on the inner side of the horizontal portion rolls with the inner side of the horizontal portion, and the upper roller 407 located on the outer side of the horizontal portion rolls with the outer side of the horizontal portion.

[0049] In the optional solution of this embodiment, it is more preferred that the longitudinal section at any point on the annular rotor 2 is L-shaped.

[0050] In the description of the present invention, it should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0051] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A ring-type segmented asynchronous wind power generation device, characterized in that: include: A rotating unit, the rotating unit comprising an annular rotor and a plurality of blades respectively connected to the annular rotor, the annular rotor is made of metal, and the axis of the annular rotor is vertical; A fixing unit, wherein the fixing unit includes a support frame for supporting the annular rotor, and the annular rotor rotates in cooperation with the support frame. The support frame is also fixed with a plurality of stator coils distributed along the circumference of the annular rotor. When the annular rotor rotates relative to the support frame driven by the blades, an induced current can be generated in the stator coils.

2. The ring-type segmented asynchronous wind power generation device according to claim 1 is characterized in that: The support frame is provided with a plurality of support structures distributed along the circumference of the annular rotor, and the annular rotor is in rolling cooperation with each of the support structures.

3. The ring-type segmented asynchronous wind power generation device according to claim 2 is characterized in that: Each of the supporting structures includes a fixed bracket and a plurality of supporting rollers installed on the fixed bracket, and the bottom surface of the annular rotor rolls with each of the supporting rollers; a plurality of limiting rollers are also installed below the annular rotor, and all of the limiting rollers are evenly distributed along the circumference of the annular rotor and are divided into two inner and outer circles, the limiting rollers located in the inner circle are used to roll with the inner side wall of the fixed bracket, and the limiting rollers located in the outer circle are used to roll with the outer side wall of the fixed bracket.

4. The ring-type segmented asynchronous wind power generation device according to claim 2 is characterized in that: The annular rotor is divided into a horizontal part and a vertical part, both of which are annular, from bottom to top; the supporting structure includes a fixed bracket, a lower roller and a plurality of upper rollers, the lower roller and all the upper rollers are installed on the fixed bracket, the lower roller is in rolling cooperation with the bottom surface of the horizontal part, all the upper rollers are distributed on the inner and outer sides of the horizontal part, and the upper roller located on the inner side of the horizontal part is in rolling cooperation with the inner side of the horizontal part, and the upper roller located on the outer side of the horizontal part is in rolling cooperation with the outer side of the horizontal part.

5. The ring-type segmented asynchronous wind power generation device according to claim 3 or 4, characterized in that: All of the stator coils are arranged on the fixing bracket, and each of the fixing brackets is provided with the stator coil.

6. The ring-type segmented asynchronous wind power generation device according to claim 4 is characterized in that: The longitudinal section at any point on the annular rotor is L-shaped.

7. The ring-type segmented asynchronous wind power generation device according to claim 1 is characterized in that: The blades are arranged vertically.

8. The ring-type segmented asynchronous wind power generation device according to claim 1 is characterized in that: The blades are lift-type blades.

9. The ring-type segmented asynchronous wind power generation device according to claim 1, characterized in that: All of the blades are located inside the annular rotor.

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