Pendulum type composite magnetic flux wave energy generator

Abstract

The invention provides a swing type composite magnetic flux wave energy generator, and aims to improve the wave energy power generation efficiency and adapt to the working conditions of low rotating speed and high torque. The generator comprises a semi-cylindrical swing body, a rotor and a stator, wherein the semi-cylindrical swing body is made of high-density alloy steel and can swing back and forth under the action of waves to capture wave energy and drive the rotor to rotate; the rotor comprises two groups of permanent magnets which are radially and axially magnetized and respectively generate radial and axial magnetic fluxes; the stator comprises a radial winding and an axial winding which are linked with the magnetic flux of the permanent magnet to realize energy conversion; by combining radial and axial magnetic flux design, the generator has high power density and high torque density, and can efficiently generate power in a limited space. In addition, the surface of the pendulum body is subjected to preservative treatment to adapt to marine environment, and service life of equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation, and in particular to a device for generating power using wave energy, specifically a pendulum-type composite magnetic flux wave energy generator. Background Art

[0002] As the global demand for renewable energy increases, ocean energy, as a clean, renewable resource with high energy density, has received widespread attention. Wave energy is an important component of ocean energy. Its energy comes from the effect of wind on the sea surface. It has the characteristics of wide distribution and strong predictability. Compared with wind energy and solar energy, wave energy has a higher energy density and is less affected by seasons and climate. It is an ideal renewable energy source.

[0003] Wave energy power generation systems usually consist of wave energy collection devices, energy conversion devices, and power output devices. Among the existing wave energy power generation technologies, pendulum wave energy power generation is a common form. Its principle is to use the ups and downs of waves to drive the pendulum device to move, and then drive the generator to generate electricity through mechanical transmission or hydraulic systems. However, traditional wave energy generators have some shortcomings, such as low efficiency in converting mechanical energy into electrical energy, and large energy dissipation in the capture and conversion links, resulting in a high unit cost of wave energy power generation, making it difficult to gain an advantage in market competition.

[0004] In addition, the existing wave energy power generation devices often cannot meet the requirements of efficient power generation under the working conditions of low speed, high torque and narrow space. Therefore, it is of great practical significance to develop an efficient generator that can adapt to the working conditions of low speed and high torque in the wave energy power generation system. Summary of the invention

[0005] According to the technical problem raised above, a pendulum-type composite magnetic flux wave energy generator is provided, which can effectively improve the efficiency of wave energy power generation, adapt to the working conditions of low speed and high torque, and realize efficient power generation in a limited space.

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

[0007] A pendulum-type composite magnetic flux wave energy generator, comprising:

[0008] The pendulum is a semi-cylindrical structure made of high-density and high-strength alloy steel metal material. The pendulum swings back and forth under the action of waves to capture wave energy and drive the motor rotor to rotate;

[0009] The rotor includes a rotor core and two sets of permanent magnets. The rotor core is a cylindrical structure with a hollow interior and an open end. The two sets of permanent magnets are installed on the inner surface of the rotor, respectively using radial and axial magnetization methods;

[0010] Stator: The stator is installed in the rotor core and includes a stator core, a radial armature winding and an axial armature winding.

[0011] Furthermore, the two groups of permanent magnets are radially magnetized permanent magnets and axially magnetized permanent magnets, respectively, wherein:

[0012] The radially magnetized permanent magnets are tile-shaped and are distributed alternately with N and S polarities on the circumference of the inner side of the rotor core. Multiple radially magnetized permanent magnets form an annular structure, and the magnetic flux they generate is along the radial direction of the motor.

[0013] The axially magnetized permanent magnets are in the shape of a fan ring and are distributed alternately with N and S polarities on the end face inside the rotor core. Multiple axially magnetized permanent magnets form a circular ring structure, and the magnetic flux they generate is along the axial direction of the motor.

[0014] Furthermore, the stator core is provided with radial stator teeth evenly along the outer circumference, and the end surface of the stator core is provided with axial stator slots evenly along the axial direction.

[0015] Furthermore, the radial armature winding is wound on the radial stator teeth; and the axial armature winding is embedded in the axial stator slots.

[0016] Furthermore, the radial armature winding and the axial armature winding are interlinked with the magnetic flux of the radially magnetized permanent magnet and the axially magnetized permanent magnet respectively.

[0017] Furthermore, the axial armature winding is fixed in the axial stator slot through a winding bracket.

[0018] Furthermore, the winding bracket upper cover is a detachable structure. The winding bracket front cover of the winding bracket is first removed, and then the axial armature winding is wound on the winding bracket, and then the winding bracket is embedded in the axial stator slot, and finally the winding bracket front cover is installed to complete the fixation of the axial armature winding.

[0019] Furthermore, the gaps between the stator core, the axial armature winding and the winding support are filled with epoxy resin.

[0020] Furthermore, the surface of the pendulum is treated with anti-corrosion to adapt to the marine environment.

[0021] Furthermore, the pendulum type composite magnetic flux wave energy generator also includes a shell, which is used to protect the internal components of the pendulum type composite magnetic flux wave energy generator from seawater erosion.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. The permanent magnet motor combining radial and axial magnetic fluxes of the present invention has high power density and high torque density, can generate a large power output in a small volume, and is suitable for the narrow working environment of wave energy generation.

[0024] 2. The kinetic energy of the waves of the present invention is mainly manifested as mechanical movement of floating up and down. This design can provide a large torque to drive the motor to generate electrical energy, and adapt to the low-speed, high-torque working conditions in the wave energy system.

[0025] 3. The present invention effectively improves the power density of the generator by optimizing the magnetic circuit design, while reducing the volume and weight of the generator and improving its mechanical strength and structural stability.

[0026] 4. The pendulum body of the present invention is made of high-density and high-strength alloy steel material and has undergone anti-corrosion treatment, which can effectively resist the erosion of the marine environment and extend the service life of the equipment.

[0027] Based on the above reasons, the present invention can be widely promoted in fields such as wave energy generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 It is a schematic structural diagram of the pendulum-type composite magnetic flux wave energy generator of the present invention.

[0030] Figure 2 It is an exploded view of the pendulum-type composite magnetic flux wave energy generator of the present invention.

[0031] Figure 3 This is a cross-sectional view of the generator rotor structure of the present invention.

[0032] Figure 4 This is a schematic diagram of the stator structure of the generator of the present invention.

[0033] Figure 5 This is the radial magnetic circuit diagram of the generator of the present invention.

[0034] Figure 6 This is the axial magnetic circuit diagram of the generator of the present invention.

[0035] In the figure: 1, pendulum body; 2, rotor core; 3, radially magnetized permanent magnet; 4, axially magnetized permanent magnet; 5, winding bracket; 51, winding bracket front cover; 6, stator core; 61, radial stator teeth; 62, axial winding slots; 7, radial armature winding; 8, axial armature winding. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments of 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 accompanying drawings and in combination with the embodiments.

[0037] 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 only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, 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 "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0040] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0041] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0042] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0043] like Figure 1 and Figure 2 As shown, the present invention provides a pendulum-type composite magnetic flux wave energy generator, comprising:

[0044] The pendulum 1 is a semi-cylindrical structure made of high-density and high-strength alloy steel metal material. The pendulum 1 swings back and forth under the action of waves to capture wave energy and drive the motor rotor to rotate;

[0045] The rotor includes a rotor core 2 and two sets of permanent magnets. The rotor core is a cylindrical structure with a hollow interior and an open end. The two sets of permanent magnets are installed on the inner surface of the rotor, respectively using radial and axial magnetization methods;

[0046] Stator: The stator is installed in the rotor core 2 and includes a stator core 6, a radial armature winding 7 and an axial armature winding 8.

[0047] In specific implementation, as a preferred embodiment of the present invention, the two groups of permanent magnets are radially magnetized permanent magnets 3 and axially magnetized permanent magnets 4, respectively, wherein:

[0048] like Figure 5 As shown, the radially magnetized permanent magnet 3 is in the shape of a tile, and is alternately distributed with N and S polarities on the circumference of the inner side of the rotor core. A plurality of radially magnetized permanent magnets form an annular structure, and the magnetic flux generated by them is along the radial direction of the motor. In this embodiment, the main magnetic flux of the radially magnetized permanent magnet 3 starts from the N-pole permanent magnet, passes through the radial stator teeth 61 and the stator core 6, flows to the adjacent S pole, and then completes the closed magnetic circuit through the rotor core 2.

[0049] like Figure 6 As shown, the axially magnetized permanent magnet 4 is in the shape of a fan ring, and is alternately distributed with N and S polarities on the end surface inside the rotor core. A plurality of axially magnetized permanent magnets form a ring structure, and the magnetic flux generated by them is along the axial direction of the motor. In this embodiment, the main magnetic flux of the axially magnetized permanent magnet 4 starts from the N-pole permanent magnet on one side, passes through the winding bracket 5, and then returns to the adjacent S-pole permanent magnet, and finally completes the closed magnetic circuit through the rotor core 2.

[0050] When implementing the invention, as a preferred embodiment of the invention, see Figure 2 The stator core 6 is provided with radial stator teeth 61 evenly along the outer circumference, and the end surface of the stator core is provided with axial stator slots 62 evenly along the axial direction.

[0051] When specifically implemented, as a preferred embodiment of the present invention, Figure 3 As shown, the radial armature winding 7 and the axial armature winding 8 are interlinked with the magnetic flux of the radially magnetized permanent magnet 3 and the axially magnetized permanent magnet 4 respectively.

[0052] When implementing the invention, as a preferred embodiment of the invention, see Figure 2 , the axial armature winding 8 is fixed in the axial stator slot 62 through the winding bracket 5. The upper cover of the winding bracket 5 is a detachable structure. First, the winding bracket front cover 51 of the winding bracket 5 is removed, and then the axial armature winding 8 is wound on the winding bracket 5, and then the winding bracket 5 is embedded in the axial stator slot 62, and finally the winding bracket front cover 51 is installed, so as to complete the fixing of the axial armature winding 8.

[0053] In specific implementation, as a preferred embodiment of the present invention, the gaps between the stator core 6, the axial armature winding 8 and the winding support 5 are filled with epoxy resin to improve the thermal conductivity of the gaps and the firmness between the three.

[0054] In specific implementation, as a preferred embodiment of the present invention, the surface of the pendulum 1 is subjected to anti-corrosion treatment to adapt to the marine environment.

[0055] In specific implementation, as a preferred embodiment of the present invention, the pendulum type composite magnetic flux wave energy generator further includes a casing, and the casing is used to protect the internal components of the pendulum type composite magnetic flux wave energy generator from seawater erosion.

[0056] 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 it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pendulum-type composite magnetic flux wave energy generator, characterized in that: include: The pendulum (1) is a semi-cylindrical structure made of high-density and high-strength alloy steel metal material. The pendulum (1) swings back and forth under the action of waves to capture wave energy and drive the motor rotor to rotate; The rotor comprises a rotor core (2) and two groups of permanent magnets. The rotor core is a cylindrical structure with a hollow interior and an open end. The two groups of permanent magnets are mounted on the inner surface of the rotor and are magnetized radially and axially respectively. The stator is installed in the rotor core (2) and comprises a stator core (6), a radial armature winding (7) and an axial armature winding (8).

2. A pendulum type composite magnetic flux wave energy generator according to claim 1, characterized in that: The two groups of permanent magnets are radially magnetized permanent magnets (3) and axially magnetized permanent magnets (4), respectively, wherein: The radially magnetized permanent magnets (3) are tile-shaped and are distributed alternately with N and S polarities on the circumference of the inner side of the rotor core. A plurality of radially magnetized permanent magnets form an annular structure, and the magnetic flux generated by them is along the radial direction of the motor. The axially magnetized permanent magnet (4) is in the shape of a fan ring and is distributed alternately with N and S polarities on the end surface inside the rotor core. A plurality of axially magnetized permanent magnets form a circular ring structure, and the magnetic flux generated by them is along the axial direction of the motor.

3. A pendulum type composite magnetic flux wave energy generator according to claim 1, characterized in that: The stator core (6) is evenly provided with radial stator teeth (61) along the outer circumference, and the end surface of the stator core is evenly provided with axial stator slots (62) along the axial direction.

4. A pendulum type composite magnetic flux wave energy generator according to claim 3, characterized in that: The radial armature winding (7) is wound on the radial stator teeth (61); and the axial armature winding (8) is embedded in the axial stator slots (62).

5. A pendulum type composite magnetic flux wave energy generator according to claim 4, characterized in that: The radial armature winding (7) and the axial armature winding (8) are respectively interlinked with the magnetic flux of the radially magnetized permanent magnet (3) and the axially magnetized permanent magnet (4).

6. A pendulum type composite magnetic flux wave energy generator according to claim 4, characterized in that: The axial armature winding (8) is fixed in the axial stator slot (62) via a winding support (5).

7. A pendulum type composite magnetic flux wave energy generator according to claim 6, characterized in that: The upper cover of the winding support (5) is a detachable structure. The winding support front cover (51) of the winding support (5) is first disassembled, and then the axial armature winding (8) is wound on the winding support (5). The winding support (5) is then embedded in the axial stator slot (62), and finally the winding support front cover (51) is installed, thereby completing the fixation of the axial armature winding (8).

8. A pendulum type composite magnetic flux wave energy generator according to claim 6, characterized in that: The gaps between the stator core (6), the axial armature winding (8) and the winding support (5) are filled with epoxy resin.

9. A pendulum type composite magnetic flux wave energy generator according to claim 1, characterized in that: The surface of the pendulum (1) is treated with anti-corrosion to adapt to the marine environment.

10. The pendulum type composite magnetic flux wave energy generator according to claim 1, characterized in that: The pendulum type composite magnetic flux wave energy generator further comprises a casing, which is used to protect the internal components of the pendulum type composite magnetic flux wave energy generator from being corroded by sea water.

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