A multi-faceted linear-rotary motor with a ring winding

Abstract

The application provides a kind of annular winding polyhedral linear-rotary motor, outside is the mover of linear motor unit, middle is the stator of linear motor unit, magnetic ring, the stator of rotary motor unit in turn, inside is the mover of rotary motor unit, linear motor unit and rotary motor unit motion decoupling are realized by above-mentioned structure;And linear power generation unit is same direction annular winding-polyhedral permanent magnet linear motor structure, permanent magnet is sheet-like parallel magnetization, simple assembly and low cost, and eliminate the influence of segmented magnetization on motor performance.When applied to the field of power generation, the setting of rotary power generation unit inside and linear power generation unit outside is also conducive to power balance, and lays the foundation for complementary control of wind and wave combined power generation after on-grid.

Description

Technical Field

[0001] This invention relates to a linear-rotary motor, and more specifically, to a toroidal winding polyhedral linear-rotary motor. Background Technology

[0002] The linear-rotary two-degree-of-freedom motor is an innovative energy conversion device that breaks through the limitations of traditional motors' single motion mode, enabling simultaneous or independent energy harvesting from linear reciprocating and rotary motions. Its core structure employs a composite magnetic circuit or dual-stator design, directly converting mechanical energy into electrical energy through magnetic field coupling; for example, linear motion cutting the radial magnetic field, and rotary motion cutting the axial magnetic field. This technology significantly improves the capture efficiency of environmental kinetic energy (such as ocean wave undulations and wind vortices), making it particularly suitable for multi-directional irregular energy scenarios. Its compact design combines high power density with dynamic response characteristics, showing application potential in ocean energy generation, hybrid power systems, and micro-energy harvesting, providing an efficient solution for distributed power generation.

[0003] However, because linear-rotary two-degree-of-freedom motors need to achieve coupled motion of two degrees of freedom, their internal structure is compact, and heat generation is concentrated in electromagnetic components (such as coils and permanent magnets) and mechanical friction areas. Furthermore, the moving parts have poor adaptability to traditional heat dissipation structures (such as fixed fins or air cooling). When applied to the generator field, in the invention disclosed in CN113037038A, entitled "A Two-Degree-of-Freedom Dual-Stator Permanent Magnet Generator," the rotary generator unit and the linear generator unit share the same mover. The motor structure is compact and highly integrated; the permanent magnets and windings are all mounted on the stator for easy heat dissipation. The mover structure has no windings or permanent magnets, making it suitable for the strong vibration environment of wave power generation systems. The generator structure is robust and reliable.

[0004] However, traditional cylindrical permanent magnet linear generator structures use annular radially magnetized permanent magnets. Due to the complexity of the magnetization process, the annular magnet is usually magnetized in segments. However, the magnetic field distribution of the permanent magnet after segmented magnetization differs from the magnetic field distribution designed for the motor, and this difference cannot be eliminated, thus affecting motor performance. Furthermore, in the above scheme, the rotating power generation unit is on the outside, and the linear power generation unit is on the inside. Given the high wind speeds and low wave energy speeds at sea, the spatiotemporal distribution of wind and wave energy resources is mismatched, resulting in a significant difference in the input energy of the two degrees of freedom and power imbalance. Moreover, due to the shared drive shaft, there is mechanical coupling, and the overload torque of wind power generation may inhibit the motion degree of freedom of the wave energy conversion mechanism, further reducing the wave energy capture efficiency.

[0005] In order to solve the above problems, people have been seeking an ideal technological solution. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a toroidal winding polyhedral linear-rotary motor that facilitates permanent magnetization and reduces power imbalance between the linear motor unit and the rotary motor unit.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a ring-wound polyhedral linear-rotary motor, comprising: a mover I, a stator I, a magnetic isolation ring, a stator II, and a mover II arranged radially from the outside to the inside;

[0008] The mover I includes a polyhedral mover core and a co-directional annular winding arranged along the axial direction on the inner surface of the polyhedral mover core; the inner surface of the polyhedral mover core has a plurality of annular stator slots parallel to the axial direction, and a co-directional annular winding is installed in each annular stator slot.

[0009] The mover II includes a cylindrical mover core and magnets II arranged along the circumferential direction on the outer surface of the cylindrical mover core;

[0010] Stator I and stator II share a polyhedral stator core. Magnets I are arranged along the axial direction on the outer surface of the polyhedral stator core. Several axial stator slots are parallel to each other along the circumferential direction on the inner surface of the polyhedral stator core. An armature winding is installed in each axial stator slot. A magnetic isolation ring is provided between the magnets I and the armature winding.

[0011] The stator I includes a polyhedral stator core and magnets I arranged along the axial direction on the outer surface of the polyhedral stator core;

[0012] The stator II includes a polyhedral stator core and armature windings arranged circumferentially on the inner surface of the polyhedral stator core.

[0013] In this invention, the outer side is the mover of the linear motor unit, the middle side consists of the stator of the linear motor unit, the magnetic isolation ring, and the stator of the rotary motor unit, and the inner side is the mover of the rotary motor unit. The above structure realizes the separation of the linear motor unit and the rotary motor unit, and the independent transmission chain realizes the motion decoupling of the linear motor unit and the rotary motor unit.

[0014] Furthermore, the linear power generation unit is a co-directional toroidal winding-polyhedral permanent magnet linear motor structure. The permanent magnets are sheet-shaped and parallel magnetized, which is simple to assemble and has a low cost, and eliminates the impact of segmented magnetization on motor performance.

[0015] When applied to power generation, it eliminates the inertia burden of both the linear and rotary generator units in a combined wind and wave power generation system. Furthermore, given the high wind speeds at sea and the lower wave energy speeds, the rotary generator unit internally generates wind power, while the linear generator unit externally generates wave energy. The linear generator unit has a larger core volume compared to the rotary generator unit, which is beneficial for power balance and lays the foundation for complementary control of combined wind and wave power generation after grid connection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the toroidal winding tetrahedral linear-rotary motor described in Example 1.

[0017] Figure 2 This is a cross-sectional structural diagram of the toroidal winding tetrahedral linear-rotary motor described in Example 1.

[0018] Figure 3 yes Figure 1 A three-dimensional structural diagram of the AA section of the toroidal winding tetrahedral linear-rotary motor.

[0019] Figure 4 This is a three-dimensional structural diagram of the linear generator unit of the toroidal winding tetrahedral linear-rotary motor described in Example 1, showing the AA section.

[0020] Figure 5 It is the overall structure of the rotary generator unit of the toroidal winding tetrahedral linear-rotary motor described in Example 1.

[0021] Figure 6 It is the overall structure of the common stator of the annular winding tetrahedral linear-rotary motor described in Example 1.

[0022] Figure 7 It is the overall structure of the magnetic isolation ring of the annular winding tetrahedral linear-rotary motor described in Example 1.

[0023] Figure 8 This is a cross-sectional structural diagram of the annular winding hexahedral linear-rotary motor described in Embodiment 2.

[0024] Figure 9 yes Figure 5 A three-dimensional structural diagram of the AA section of the annular winding hexahedral linear-rotary motor.

[0025] Figure 10 It is the overall structure of the linear generator unit of the annular winding hexahedral linear-rotary motor described in Example 2.

[0026] Figure 11It is the overall structure of the rotary generator unit of the annular winding hexahedral linear-rotary motor described in Example 2.

[0027] In the diagram: 1. Mover core I; 2. Co-directional toroidal winding; 3. Magnet I; 4. Stator core I; 5. Magnetic isolation ring; 6. Stator core II; 7. Armature winding; 8. Magnet II; 9. Mover core II. Detailed Implementation

[0028] The technical solution of the present invention will be further described in detail below through specific embodiments.

[0029] Example 1

[0030] This embodiment provides a toroidal winding tetrahedral linear-rotary motor, such as... Figure 1-7 As shown, it includes: a mover I, a stator I, a magnetic isolation ring 5, a stator II, and a mover II arranged sequentially from the outside to the inside.

[0031] The mover I includes a tetrahedral mover core I1 and axially arranged annular windings 2 on the inner surface of the tetrahedral mover core I1. Specifically, the axially arranged annular windings form m1 phase windings, wherein each phase winding is connected in series. It can be understood that the mover core I1 is made of laminated silicon steel sheets.

[0032] Specifically, the inner surface of the moving core I1 is provided with several annular stator slots parallel to each other along the axial direction, and a co-directional annular winding 2 is installed in each annular stator slot.

[0033] In another embodiment, the tetrahedral mover core includes four flat mover units. The inner surface of each flat mover unit has several rectangular winding slots arranged in the axial direction corresponding to the same-direction annular winding. The four rectangular winding slots located in the same longitudinal section form an annular stator slot to install the same-direction annular winding 2.

[0034] The stator I includes a stator core I 4 with a tetrahedral cross-section and magnetic poles I 3 arranged axially on the outer surface of the stator core I 4. Specifically, the magnetic poles I 3 are sheet-like, parallel, radially magnetized permanent magnets, with adjacent permanent magnets having opposite magnetic poles, i.e., alternating N and S poles. The magnetization direction of each radial permanent magnet is radial. In this embodiment, taking a three-phase winding composed of co-directional toroidal windings as an example, the stator core I 4 has a total of 21 magnetic poles I 3.

[0035] Specifically, the magnetic poles I3 are arranged and attached to each outer surface of the moving core I1 along the axial direction.

[0036] It is understandable that, compared with the traditional cylindrical permanent magnet linear generator structure that uses segmented magnetization of the annular magnet, this application uses a radial permanent magnet with parallel sheet magnetization, which is simple to assemble and has a low cost, and eliminates the impact of segmented magnetization on motor performance.

[0037] It can be understood that the mover I and the stator I form a linear motor unit. In use, an alternating current of phase m1 is passed through the same-direction annular winding, thereby generating an axial armature magnetic field; the armature magnetic field interacts with the permanent magnet magnetic field, generating an axial electromagnetic force, thereby driving the mover to move linearly along the stator I.

[0038] The mover II includes a cylindrical mover core II 9 and magnetic poles II 8 arranged circumferentially on the outer surface of the cylindrical mover core II 9. Specifically, the magnetic poles II 8 are axial permanent magnets, with adjacent magnetic poles II 8 having opposite poles, i.e., alternating N and S poles, and the magnetization direction of each axial permanent magnet is the axial direction. Specifically, the magnetic poles II are arranged circumferentially and attached to the outer surface of the cylindrical mover core.

[0039] The stator II includes a stator core II 6 and an armature winding 7 arranged circumferentially on the inner surface of the stator core II 6.

[0040] Specifically, the inner surface of the stator core II 6 is provided with several axial stator slots parallel to each other along the circumferential direction, and an armature winding 7 is installed in each axial stator slot.

[0041] In one embodiment, the stator core II 6 is a 12-slot, 10-pole stator core, with two adjacent armature windings connected in reverse series as a single phase winding, and correspondingly, the number of magnetic poles II is 10.

[0042] It is understood that the moving core II 9 is made of stacked silicon steel sheets.

[0043] It is understood that the mover II and the stator II constitute a rotating motor unit. In use, three-phase alternating current is passed through the armature winding 7, thereby generating a radial armature magnetic field; the armature magnetic field interacts with the permanent magnet magnetic field, generating a radial electromagnetic force, thereby driving the mover II to rotate relative to the stator II.

[0044] Specifically, the number of magnetic poles I and II, as well as the arrangement of the three-phase electricity in the same-direction annular winding and the armature winding 7, are all common technologies, and will not be explained in detail here.

[0045] As can be seen, in this invention, the outer side is the mover of the linear motor unit, the middle side consists of the stator of the linear motor unit, the magnetic isolation ring, and the stator of the rotary motor unit, and the inner side is the mover of the rotary motor unit. It can be seen that the linear motor unit and the rotary motor unit do not share a mover, that is, there is no mechanical coupling. Furthermore, a magnetic isolation ring 5 is provided between the stator of the linear motor unit and the stator of the rotary motor unit. The magnetic isolation ring 5 can prevent the magnetic circuits of the two stators of the linear motor unit and the rotary motor unit from coupling and adversely affecting the operation of the motor, thereby forming two motor units with mutually isolated magnetic circuits. Through the above structure, the separation of the linear motor unit and the rotary motor unit is realized, thereby realizing the motion decoupling of the linear motor unit and the rotary motor unit.

[0046] Specifically, when applied to the power generation field, the motion decoupling setting of the linear motor unit and the rotary motor unit eliminates the inertial burden of the linear power generation unit and the rotary power generation unit in the wind and wave combined power generation system, and is conducive to improving the wave energy capture efficiency.

[0047] Furthermore, while wind speeds are high at sea, wave energy speeds are low. Rotary generator units are used internally for wind power generation, while linear generator units are used externally for wave energy generation. Compared to rotary generator units, linear generator units have a larger core volume, which is beneficial for power balance and lays the foundation for complementary control of wind and wave power generation after grid connection.

[0048] Example 2

[0049] The difference between this embodiment and embodiment 1 is that: the stator core I of stator I and the stator core II of stator II are the same stator core, the stator core is a tetrahedral stator core, the outer surface of the tetrahedral stator core is provided with magnetic poles I 3 arranged along the axial direction, the inner surface of the tetrahedral stator core is provided with armature windings 7 arranged along the circumferential direction, and the magnetic isolation ring 5 is provided between the magnetic poles I 3 and the armature windings 7.

[0050] It is understood that in this application, the rotary motor unit and the linear motor unit share the same stator, resulting in a compact motor structure and high integration.

[0051] Example 3

[0052] The difference between this embodiment and Embodiment 1 is that: Figure 8-11 As shown, this embodiment provides a hexahedral linear-rotary motor with annular winding.

[0053] Specifically, the mover I includes a mover core I1 with a hexahedral cross-section and a ring winding 2 arranged in the same direction on the inner surface of the hexahedral mover core I1.

[0054] Specifically, the inner surface of the moving core I1 is provided with several annular stator slots parallel to each other along the axial direction, and a co-directional annular winding 2 is installed in each annular stator slot.

[0055] In another embodiment, the tetrahedral mover core includes six flat mover units. The inner surface of each flat mover unit has several rectangular winding slots arranged in the axial direction corresponding to the same-direction annular winding. The six rectangular winding slots located in the same longitudinal section form an annular stator slot to install the same-direction annular winding 2.

[0056] The stator I includes a stator core I 4 with a hexahedral cross section and magnetic poles I 3 arranged along the axial direction on the outer surface of the stator core I 4. Specifically, the magnetic poles I 3 are sheet-shaped parallel magnetized radial permanent magnets, and the magnetic poles of two adjacent permanent magnets are opposite, that is, they are arranged alternately with N poles and S poles. The magnetization direction of each radial permanent magnet is the radial direction.

[0057] Specifically, the magnetic poles I3 are arranged and attached to each outer surface of the moving core I1 along the axial direction.

[0058] It is understandable that, compared with the traditional cylindrical permanent magnet linear generator structure that uses segmented magnetization of the annular magnet, this application uses a radial permanent magnet with parallel sheet magnetization, which is simple to assemble and has a low cost, and eliminates the impact of segmented magnetization on motor performance.

[0059] It can be understood that the mover I and the stator I form a linear generator unit. In use, three-phase alternating current is passed through the same-direction annular winding, thereby generating an axial armature magnetic field; the armature magnetic field interacts with the permanent magnet magnetic field, generating an axial electromagnetic force, thereby driving the mover to move linearly along the stator I.

[0060] The mover II includes a cylindrical mover core II 9 and magnetic poles II 8 arranged circumferentially on the outer surface of the cylindrical mover core II 9. Specifically, the magnetic poles II 8 are axial permanent magnets, with adjacent magnetic poles II 8 having opposite poles, i.e., alternating N and S poles, and the magnetization direction of each axial permanent magnet is the axial direction. Specifically, the magnetic poles II are arranged circumferentially and attached to the outer surface of the cylindrical mover core.

[0061] The stator II includes a stator core II 6 and an armature winding 7 arranged circumferentially on the inner surface of the stator core II 6.

[0062] Specifically, the inner surface of the stator core II 6 is provided with several axial stator slots parallel to each other along the circumferential direction, and an armature winding 7 is installed in each axial stator slot.

[0063] It is understood that the mover II and the stator II constitute a rotary generator unit. In use, three-phase alternating current is passed through the armature winding 7, thereby generating a radial armature magnetic field; the armature magnetic field interacts with the permanent magnet magnetic field, generating a radial electromagnetic force, thereby driving the mover II to rotate relative to the stator II.

[0064] Specifically, the number of magnetic poles I and II, as well as the arrangement of the three-phase electricity in the same-direction annular winding and the armature winding 7, are all common technologies, and will not be explained in detail here.

[0065] As can be seen from the embodiments, in this invention, the outer side is the mover of the linear motor unit, the middle side is the stator of the linear motor unit and the stator of the rotary motor unit in sequence, and the inner side is the mover of the rotary motor unit. A magnetic isolation ring 5 is provided between the stator of the linear motor unit and the stator of the rotary motor unit. The magnetic isolation ring 5 can prevent the magnetic circuits of the two stators of the linear motor unit and the rotary motor unit from coupling and having an adverse effect on the operation of the motor, thereby forming two generator units with mutually isolated magnetic circuits. That is, the above structure realizes the decoupling of the motion of the linear motor unit and the rotary motor unit.

[0066] It should be further noted that the annular winding polyhedral linear-rotary motor is not limited to the tetrahedral structure described in Embodiment 1, nor is it limited to the hexahedral structure described in Embodiment 3; for example, an octahedral structure is also possible.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A toroidal winding polyhedral linear-rotary motor, characterized in that, include: The rotor I, stator I, magnetic isolation ring, stator II, and rotor II are arranged radially from the outside to the inside. The mover I includes a polyhedral mover core and a co-directional annular winding arranged along the axial direction on the inner surface of the polyhedral mover core; the inner surface of the polyhedral mover core has a plurality of annular stator slots parallel to the axial direction, and a co-directional annular winding is installed in each annular stator slot. The mover II includes a cylindrical mover core and magnets II arranged along the circumferential direction on the outer surface of the cylindrical mover core; Stator I and stator II share a polyhedral stator core. Magnets I are arranged along the axial direction on the outer surface of the polyhedral stator core. Several axial stator slots are parallel to each other along the circumferential direction on the inner surface of the polyhedral stator core. An armature winding is installed in each axial stator slot. A magnetic isolation ring is provided between the magnets I and the armature winding. The stator I includes a polyhedral stator core and magnets I arranged along the axial direction on the outer surface of the polyhedral stator core; The stator II includes a polyhedral stator core and armature windings arranged circumferentially on the inner surface of the polyhedral stator core.

2. A toroidal winding polyhedral linear-rotary motor according to any one of claims 1, characterized in that, The polyhedral mover core includes N flat-plate mover units, and the inner surface of each flat-plate mover unit has several rectangular winding slots arranged in the axial direction corresponding to the same-direction annular windings.

3. The annular winding polyhedral linear-rotary motor according to claim 2, characterized in that, Magnet I is a sheet-shaped, parallel, radially magnetized permanent magnet, with the magnetic poles of two adjacent radial permanent magnets being opposite; Magnet II is an axial permanent magnet, with the magnetic poles of two adjacent axial permanent magnets being opposite.

4. A toroidal winding polyhedral linear-rotary motor according to claim 3, characterized in that, Magnet I is arranged and pasted along the axial direction on each outer surface of the polyhedral stator core; magnet II is arranged and pasted along the circumferential direction on the outer surface of the cylindrical mover core.

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