Radial-axial mixed magnetic flux wave energy generator with composite structure

Abstract

The invention provides a radial-axial mixed magnetic flux wave energy generator with a composite structure, and belongs to the technical field of wave energy utilization equipment. The generator comprises a swing body with a semicircular end face, the interior of the swing body is of a cavity structure, and the swing body is used for embedding permanent magnets which are magnetized in the radial direction and the axial direction and swings back and forth under the action of waves to capture wave energy. The stator comprises a stator iron core, a radial winding and an axial winding, a radial magnetic flux path and an axial magnetic flux path are designed, and efficient electromagnetic induction power generation is achieved. Wherein the radial magnetizing permanent magnets are spliced into an annular structure and are mounted on the circumferential surface of the inner side of the pendulum body; the axial magnetizing permanent magnets are spliced into a fan-shaped structure and installed on the end face of the inner side of the swing body, and permanent magnets are arranged on the left side and the right side of the swing body to form a radial magnetic circuit and an axial magnetic circuit respectively. By combining the advantages of radial and axial magnetic flux motors, the magnetic flux motor has the characteristics of high power density and high torque density, can generate larger power output in a smaller volume, and is suitable for the working requirements of low rotating speed and large torque in a wave energy power generation system.

Description

Technical Field

[0001] The present invention relates to the technical field of wave energy utilization devices, and more particularly, to a composite structure radial-axial hybrid flux wave energy generator. Background Art

[0002] Wave energy generation technology is a technology that uses the energy of ocean waves to produce electrical energy. Wave energy generation captures the up-and-down or horizontal movement of waves through specific devices such as floating bodies and oscillating water columns, and then converts the mechanical energy of the waves through a hydraulic system, a pneumatic system, or a mechanical system directly driving a generator. Finally, the mechanical energy is converted into electrical energy by the generator. Wave energy generation technology can be directly used for local power supply or transmitted to the shore through cables and connected to the power grid, and is widely used in fields such as ocean ranching and power supply for remote islands and reefs. With the development of wave energy generation technology, wave energy, as a renewable clean energy, is also increasingly applied to waterborne carriers such as ships to provide supplementary electrical energy or form self-powered energy supply.

[0003] With the global emphasis on renewable energy, wave energy, as a clean and abundant energy form, has received extensive attention. Wave energy generation technology captures the mechanical movement of ocean waves and converts it into electrical energy, which can be used in fields such as ocean ranching, power supply for remote islands and reefs, and ship self-powered energy supply. However, traditional wave energy generators have problems such as low energy density and large device volume, which limit their wide application.

[0004] In terms of motor design, radial flux and axial flux motors each have their own advantages and disadvantages. Radial flux motors have a simple structure but limited power density; axial flux motors have a higher power density but a complex structure. Therefore, the design of hybrid flux motors that combine the two has emerged, aiming to improve the power density and torque density of the motor by optimizing the magnetic field utilization efficiency to meet the working requirements of low speed and high torque in wave energy generation systems. Summary of the Invention

[0005] In view of the above-mentioned technical problem that the energy density of traditional wave energy generators is low and a larger device is required to collect sufficient energy, a composite structure radial-axial hybrid flux wave energy generator is provided. The compact design of this generator can adapt to narrow environments, and at the same time can provide a larger torque density to adapt to the working conditions of low speed and large torque in wave energy systems.

[0006] The technical means adopted by the present invention are as follows:

[0007] A composite structure radial-axial hybrid flux wave energy generator, comprising:

[0008] The pendulum body has a semi-circular end face and a cavity inside. The pendulum body swings back and forth under the action of waves to capture wave energy, and the internal cavity of the pendulum body is used to embed permanent magnets magnetized radially and axially.

[0009] The permanent magnets include radially magnetized permanent magnets and axially magnetized permanent magnets. The radially magnetized permanent magnets and axially magnetized permanent magnets are embedded in the internal cavity of the pendulum body and are magnetized radially and axially respectively.

[0010] The stator includes a stator core, a radial armature winding, and an axial armature winding. The stator core is evenly provided with radial stator teeth along the outer circumference, and the end face of the stator core is evenly provided with axial winding placement grooves along the axis. The radial armature winding is wound on the radial stator teeth, and the axial armature winding is embedded in the axial winding placement grooves. The radial armature winding and the axial armature winding are respectively interlinked with the magnetic fluxes of the radially magnetized permanent magnets and axially magnetized permanent magnets to achieve electromagnetic induction power generation.

[0011] Further, the axial armature winding is fixed in the axial winding placement groove through a winding support.

[0012] Further, the radially magnetized permanent magnets are arranged alternately with N and S polarities, spliced into an annular structure, and installed on the circumferential surface inside the pendulum body to form the radial magnetic circuit of the motor.

[0013] Further, the adjacent radially magnetized permanent magnets of the wave energy generator are arranged alternately with N and S polarities, and the polarities of two adjacent radially magnetized permanent magnets are opposite. The main magnetic flux of the radially magnetized permanent magnet starts from the N pole, passes through the radial stator teeth and the stator core, and then flows to the adjacent S pole, and then completes the closed magnetic circuit through the pendulum body.

[0014] Further, the axially magnetized permanent magnets are distributed alternately with N and S polarities, spliced into a fan-shaped structure, and installed on the end face inside the pendulum body. And an axially magnetized permanent magnet is installed on each of the left and right sides, namely the left axially magnetized permanent magnet and the right axially magnetized permanent magnet, to form the axial magnetic circuit of the motor.

[0015] Further, the axially magnetized permanent magnets on the opposite sides of the wave energy generator are symmetrically distributed with N and S polarities, and the polarities of two adjacent axially magnetized permanent magnets are opposite. The main magnetic flux of the axially magnetized permanent magnet starts from the N pole on one side, passes through the winding support and flows to the S pole on the opposite side, and then completes the closed magnetic circuit through the pendulum body.

[0016] Further, the pendulum body includes a first pendulum body and a second pendulum body. The first pendulum body and the second pendulum body have the same shape and volume, but different densities, and both have semi-circular end faces and cavities inside. The first pendulum body and the second pendulum body with semi-circular end faces together form a large pendulum body with a circular end face, and this large pendulum body swings back and forth under the action of waves to capture wave energy.

[0017] Furthermore, the gap between the stator core, the axial winding placement groove, the axial armature winding, and the winding bracket is filled with epoxy resin, which not only improves the thermal conductivity of the gap but also greatly enhances the firmness among the three.

[0018] Furthermore, the winding bracket is a detachable structure. After removing the front cover of the winding bracket, the axial armature winding is wound around the winding bracket, then the winding bracket is inserted into the axial winding placement groove, and finally the front cover of the winding bracket is installed, thus completing the fixation of the axial armature winding.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. A composite structure radial-axial hybrid flux wave energy generator provided by the present invention combines the advantages of radial and axial flux motors. This generator can generate a large power output within a relatively small volume, meeting the working requirements of low speed and large torque in the wave energy power generation system.

[0021] 2. A composite structure radial-axial hybrid flux wave energy generator provided by the present invention has a pendulum body that swings reciprocally under the action of waves, captures wave energy, and converts it into electrical energy through the principle of electromagnetic induction, with a high energy conversion efficiency.

[0022] 3. A composite structure radial-axial hybrid flux wave energy generator provided by the present invention has a compact structure, is suitable for installation in an environment with limited space, and reduces the installation cost of the wave energy power generation system.

[0023] 4. A composite structure radial-axial hybrid flux wave energy generator provided by the present invention adopts high-permeability materials and epoxy resin filling technology, improving the reliability and durability of the generator and adapting to the complex working conditions of the marine environment.

[0024] Based on the above reasons, the present invention can be widely promoted in the fields of wave energy utilization equipment, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic structural diagram of the composite structure radial-axial hybrid flux wave energy generator of the present invention.

[0027] Figure 2This is an explosion diagram of the composite structure radial-axial hybrid flux wave energy generator of the present invention.

[0028] Figure 3 This is a sectional view of the pendulum structure of the generator of the present invention.

[0029] Figure 4 This is a schematic diagram of the stator structure of the generator of the present invention.

[0030] Figure 5 This is the radial magnetic circuit diagram of the generator of the present invention.

[0031] Figure 6 This is the axial magnetic circuit diagram of the generator of the present invention.

[0032] Figure 7 This is a schematic diagram of the structure of the composite structure radial-axial hybrid flux wave energy generator with a large pendulum body having a circular end face of the present invention.

[0033] In the figure: 1. Pendulum body, 11. First pendulum body; 12. Second pendulum body; 2. Radially magnetized permanent magnet; 3. Axially magnetized permanent magnet; 31. Left axially magnetized permanent magnet; 32. Right axially magnetized permanent magnet; 4. Stator core; 41. Radial stator teeth; 42. Axial winding placement groove; 5. Winding bracket; 51. Front cover of the winding bracket; 6. Radial armature winding; 7. Axial armature winding. Detailed implementation manners

[0034] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0035] To make the objectives, 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 only a part of the embodiments of the present invention, rather than all the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] It should be noted that the terms used here are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments according to the present invention. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of the described features, steps, operations, devices, components and / or their combinations.

[0037] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention: the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0039] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "above-mentioned", etc. can be used here to describe the spatial positional relationship of a device or feature shown in the drawing with other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawing of the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "beneath other devices or structures". Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations are made for the spatial relative descriptions used here.

[0040] In addition, it should be noted that the use of words such as "first", "second", etc. to define components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above words have no special meaning, and thus should not be construed as limiting the protection scope of the present invention.

[0041] AsFigure 1 and Figure 2 As shown, the present invention provides a composite structure radial-axial hybrid flux wave energy generator, comprising:

[0042] A pendulum body 1, the end face of the pendulum body 1 is semi-circular, the inside of the pendulum body 1 is a cavity, the pendulum body 1 makes reciprocating swings under the action of waves to capture wave energy, and the internal cavity of the pendulum body 1 is used to embed permanent magnets with radial magnetization and axial magnetization; as Figure 3 shown, it is a sectional view of the generator pendulum body structure.

[0043] Permanent magnets, including a radially magnetized permanent magnet 2 and an axially magnetized permanent magnet 3, the radially magnetized permanent magnet 2 and the axially magnetized permanent magnet 3 are embedded in the internal cavity of the pendulum body 1, and are magnetized in the radial and axial directions respectively;

[0044] A stator, including a stator core 4, a radial armature winding 6 and an axial armature winding 7, the stator core 4 is evenly provided with radial stator teeth 41 along the outer circumference, and the end face of the stator core 4 is evenly provided with axial winding placement grooves 42 along the axis. The radial armature winding 6 is wound on the radial stator teeth 41, and the axial armature winding 7 is embedded in the axial winding placement grooves 42. The radial armature winding 6 and the axial armature winding 7 respectively intersect with the magnetic fluxes of the radially magnetized permanent magnet 2 and the axially magnetized permanent magnet 3 to realize electromagnetic induction power generation. As Figure 4 shown, it is a schematic diagram of the generator stator structure.

[0045] In specific implementation, as a preferred implementation manner of the present invention, the axial armature winding 7 is fixed in the axial winding placement groove 42 through a winding support 5. The winding support 5 is a detachable structure. After removing the front cover 51 of the winding support 5 of the winding support 5, the axial armature winding 7 is wound on the winding support 5, then the winding support 5 is embedded into the axial winding placement groove 42, and finally the front cover 51 of the winding support is installed, thereby completing the fixation of the axial armature winding 7.

[0046] In specific implementation, as a preferred implementation manner of the present invention, the radially magnetized permanent magnet 2 has N and S polarities arranged alternately, spliced into an annular structure, and installed on the circumferential surface inside the pendulum body 1 to form a radial magnetic circuit of the motor. As Figure 5 shown, it is a radial magnetic circuit diagram of the generator.

[0047] In specific implementation, as a preferred implementation manner of the present invention, the adjacent radially magnetized permanent magnets 2 of the wave energy generator are arranged alternately with polarities N and S, the polarities of two adjacent radially magnetized permanent magnets 2 are opposite, and the main magnetic flux of the radially magnetized permanent magnet 2 starts from the N pole, passes through the radial stator teeth 41 and the stator core 4 and then flows to the adjacent S pole, and then completes the closed magnetic circuit through the pendulum body 1.

[0048] In specific implementation, as a preferred implementation manner of the present invention, the axially magnetized permanent magnets 3 are distributed with alternating N and S polarities, spliced into a sector structure, installed on the end face inside the pendulum body 1, and one axially magnetized permanent magnet 3 is installed on each of the left and right sides, namely the left axially magnetized permanent magnet 31 and the right axially magnetized permanent magnet 32, to form the axial magnetic circuit of the motor. As Figure 6 shown, it is the axial magnetic circuit diagram of the generator.

[0049] In specific implementation, as a preferred implementation manner of the present invention, the axially magnetized permanent magnets 3 on the opposite side of the wave energy generator are symmetrically distributed according to the polarities N and S, the polarities of two adjacent axially magnetized permanent magnets 3 are opposite, and the main magnetic flux of the axially magnetized permanent magnets 3 starts from the N pole on one side, flows through the winding support 5 to the S pole on the opposite side, and then completes the closed magnetic circuit through the pendulum body 1.

[0050] In specific implementation, as a preferred implementation manner of the present invention, as Figure 7 shown, the pendulum body 1 includes a first pendulum body 11 and a second pendulum body 12. The first pendulum body 11 and the second pendulum body 12 have the same shape, the same volume, but different densities, and their end faces are both semi-circular, and their interiors are both cavities. The first pendulum body 11 and the second pendulum body 12 with semi-circular end faces together form a large pendulum body with a circular end face, and this large pendulum body swings reciprocally under the action of waves to capture wave energy. And this design scheme can make full use of all the windings in the stator part.

[0051] In specific implementation, as a preferred implementation manner of the present invention, the gaps between the stator core 4, the axial winding placement groove 42, the axial armature winding 7 and the winding support 5 are filled with epoxy resin, which not only improves the thermal conductivity of the gaps, but also greatly improves the firmness among the four.

[0052] In summary, the composite structure radial-axial hybrid flux wave energy generator of the present invention realizes high power density and high torque density, and can efficiently convert wave energy into electrical energy. The present invention not only meets the working requirements of low speed and large torque in the wave energy generation system, but also has the advantages of compact design, efficient energy conversion, reliability and durability, and has broad application prospects.

[0053] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A composite structure radial-axial hybrid flux wave energy generator, characterized in that, Comprising: A pendulum body (1), the end face of the pendulum body (1) is semi-circular, the interior of the pendulum body (1) is a cavity, the pendulum body (1) swings back and forth under the action of waves to capture wave energy, and the inner cavity of the pendulum body (1) is used to embed radially magnetized and axially magnetized permanent magnets; Permanent magnets, including a radially magnetized permanent magnet (2) and an axially magnetized permanent magnet (3), the radially magnetized permanent magnet (2) and the axially magnetized permanent magnet (3) are embedded in the inner cavity of the pendulum body (1), and are magnetized radially and axially respectively; A stator, including a stator core (4), a radial armature winding (6) and an axial armature winding (7), the stator core (4) is evenly provided with radial stator teeth (41) along the outer circumference, and the end face of the stator core (4) is evenly provided with axial winding placement grooves (42) along the axis. The radial armature winding (6) is wound on the radial stator teeth (41), and the axial armature winding (7) is embedded in the axial winding placement grooves (42). The radial armature winding (6) and the axial armature winding (7) are respectively interlinked with the magnetic fluxes of the radially magnetized permanent magnet (2) and the axially magnetized permanent magnet (3) to achieve electromagnetic induction power generation.

2. A composite structure radial-axial hybrid flux wave energy generator according to claim 1, characterized in that, The axial armature winding (7) is fixed in the axial winding placement groove (42) through a winding bracket (5).

3. A composite structure radial-axial hybrid flux wave energy generator according to claim 1, characterized in that, The radially magnetized permanent magnet (2) has N and S polarities arranged alternately, spliced into an annular structure, and installed on the circumferential surface inside the pendulum body (1) to form the radial magnetic circuit of the motor.

4. A composite structure radial-axial hybrid flux wave energy generator according to claim 3, characterized in that, For the wave energy generator, the adjacent radially magnetized permanent magnets (2) are arranged alternately with polarities N and S, the polarities of two adjacent radially magnetized permanent magnets (2) are opposite, and the main magnetic flux of the radially magnetized permanent magnet (2) starts from the N pole, passes through the radial stator teeth (41) and the stator core (4), and then flows to the adjacent S pole, and then completes the closed magnetic circuit through the pendulum body (1).

5. A composite structure radial-axial hybrid flux wave energy generator according to claim 1, characterized in that, The axially magnetized permanent magnet (3) has N and S polarities distributed alternately, spliced into a fan-shaped structure, installed on the end face inside the pendulum body (1), and an axially magnetized permanent magnet (3) is installed on both the left and right sides, namely the left axial magnetized permanent magnet (31) and the right axial magnetized permanent magnet (32), to form the axial magnetic circuit of the motor.

6. A radial-axial hybrid flux wave energy generator with a composite structure according to claim 5, characterized in that, For the wave energy generator, the axially magnetized permanent magnets (3) on the opposite sides are symmetrically distributed with polarities N and S, the polarities of two adjacent axially magnetized permanent magnets (3) are opposite, and the main magnetic flux of the axially magnetized permanent magnet (3) starts from the N pole on one side, passes through the winding bracket (5), and flows to the S pole on the opposite side, and then completes the closed magnetic circuit through the pendulum body (1).

7. A composite structure radial-axial hybrid flux wave energy generator according to claim 1, characterized in that The pendulum body (1) includes a first pendulum body (11) and a second pendulum body (12). The first pendulum body (11) and the second pendulum body (12) have the same shape and volume, but different densities, and their end faces are both semi-circular and their interiors are both cavities. The first pendulum body (11) and the second pendulum body (12) with semi-circular end faces together form a large pendulum body with a circular end face, and this large pendulum body swings back and forth under the action of waves to capture wave energy.

8. A composite structure radial-axial hybrid flux wave energy generator according to claim 2, characterized in that, The gaps between the stator core (4), the axial winding placement groove (42), the axial armature winding (7) and the winding bracket (5) are filled with epoxy resin.

9. A composite structure radial-axial hybrid flux wave energy generator according to claim 8, characterized in that, The winding bracket (5) is a detachable structure. After removing the front cover (51) of the winding bracket (5), the axial armature winding (7) is wound around the winding bracket (5), then the winding bracket (5) is inserted into the axial winding placement groove (42), and finally the front cover (51) of the winding bracket is installed, thereby completing the fixation of the axial armature winding (7).

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