Permanent magnet voltage regulation brushless generator

Abstract

The invention discloses a permanent magnet voltage regulation brushless generator which comprises a rotor body, a rotating shaft is installed in the rotor body, two claw poles are symmetrically installed on the surface of the rotating shaft, a rotor iron core is installed between the two claw poles, and the rotor iron core comprises a steel cylinder installed in the rotor body. A plurality of first silicon steel sheet assemblies used for winding copper wires are installed on the outer surface of the steel cylinder around the circumference of the steel cylinder, and second silicon steel sheet assemblies are installed in the positions, close to the first silicon steel sheet assemblies, of the claw poles in a sliding mode. The magnetic field can be absorbed more effectively, magnetic hysteresis loss and eddy current loss are reduced, meanwhile, the magnetic domain pieces are installed on the two sides of the rotor, the interaction force between the magnetic domains is enhanced through the interaction between the forward magnetic domain pieces and the reverse magnetic domain pieces, the average value of the magnetic moment is improved, and the magnetic conductivity is remarkably improved.

Description

Technical Field

[0001] The invention relates to the field of generators, and in particular to a permanent magnet voltage-regulating brushless generator. Background Art

[0002] Generators are core equipment that convert mechanical energy into electrical energy. In traditional generator designs, the rotor structure and its magnetization method have an important impact on power generation efficiency, output voltage stability, and equipment maintenance costs. Permanent magnetic materials have the advantages of high magnetic energy product, high coercive force, and high stability. They can replace traditional excitation windings, brushes, and other components to achieve brushless operation. This not only reduces mechanical and excitation losses, but also improves the service life and reliability of the generator.

[0003] The rotor core of a traditional generator often uses a whole piece of ferromagnetic material or a simple laminated structure. This design is prone to produce large eddy current losses under the action of the magnetic field, affecting the power generation efficiency. At the same time, the traditional rotor magnetization method relies on the external magnetic field. The magnetization process is relatively fixed and difficult to flexibly adjust according to actual needs. This not only limits the adaptability of the generator under different working conditions, but also due to the uneven distribution of the magnetic field, it will cause fluctuations in the output voltage and affect the power quality. Summary of the invention

[0004] The purpose of the present invention is to provide a permanent magnet voltage-regulated brushless generator to solve the problem that the traditional rotor magnetization method proposed in the above background technology depends on the external magnetic field, the magnetization process is relatively fixed, and it is difficult to flexibly adjust according to actual needs.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a permanent magnet voltage-regulated brushless generator, comprising a rotor body, a rotating shaft is installed inside the rotor body, two claw poles are symmetrically installed on the surface of the rotating shaft, a rotor core is installed between the two claw poles, the rotor core comprises a steel cylinder installed inside the rotor body, a plurality of first silicon steel sheet assemblies for copper wire winding are installed around its circumference on the outer surface of the steel cylinder, a second silicon steel sheet assembly is slidably installed inside the claw pole close to the first silicon steel sheet assembly, and the second silicon steel sheet assembly is inserted inside the first silicon steel sheet assembly, an air cavity is provided between the second silicon steel sheet assembly and the claw pole, a magnetic reaction cavity connected to the air cavity is provided inside the claw pole, a forward magnetic domain component for lengthening and enhancing the magnetic field is installed on the inner top wall of the magnetic reaction cavity, and a reverse magnetic domain component for compressing and weakening the magnetic field is slidably installed inside the magnetic reaction cavity.

[0006] As a preferred technical solution of the present invention, multiple first silicon steel sheet assemblies are reinforced by end rings, and multiple second silicon steel sheet assemblies are reinforced by side plates. Insulating paper is installed on the surfaces of the first silicon steel sheet assemblies and the second silicon steel sheet assemblies. An exhaust hole communicating with the outside world is opened between the forward magnetic domain component and the reverse magnetic domain component, and a breathable sponge is installed inside the exhaust hole.

[0007] As a preferred technical solution of the present invention, a cavity is opened inside the steel cylinder, and a supporting mechanism is arranged inside the cavity. The supporting mechanism includes a spiral reinforcement rib installed inside the cavity for reinforcing the supporting copper wire, and the cross-section of the spiral reinforcement rib is "S" shaped. The steel cylinder is provided with a breathable groove for heat dissipation on the gap surface close to the first silicon steel sheet assembly.

[0008] As a preferred technical solution of the present invention, three ribs are fixedly installed inside the spiral reinforcement ribs, and multiple electromagnetic shielding components for shielding the internal magnetic field are installed on the surface of the ribs. The electromagnetic shielding components are respectively installed in the gaps of the spiral reinforcement ribs.

[0009] As a preferred technical solution of the present invention, a ventilation mechanism is arranged at a position of the rotating shaft near the cavity, and the ventilation mechanism includes ventilation grooves opened on the surface of the rotating shaft, and the ventilation grooves are respectively connected to the cavity and the external space of the rotor body, and a breathable groove for heat dissipation is opened on the surface of the steel cylinder near the first silicon steel sheet assembly.

[0010] As a preferred technical solution of the present invention, a sealing long plate is slidably installed on the surface of the ventilation groove, and a plurality of inclined ventilation holes are opened on the surface of the sealing long plate, and the plurality of ventilation holes are connected with the gaps of the spiral reinforcement ribs, and the ventilation holes are connected with the outside world through the inner cavity of the sealing long plate, and an electric push rod is installed on the surface of the rotating shaft, and the free end of the electric push rod is fixedly connected to one end of the sealing long plate.

[0011] As a preferred technical solution of the present invention, an auxiliary mechanism is provided inside the sealing long plate, and the auxiliary mechanism includes a pad installed inside the sealing long plate, a spring is fixedly installed on the surface of the pad, a pressure plate is fixedly installed on the free end of the spring, a push rod for limiting the spiral slide plate is installed on the top of the pressure plate, a long groove is provided on the surface of the rotating shaft close to the steel cylinder, a spiral slide plate is slidably installed inside the long groove, and the push rod is inserted inside the spiral slide plate, a first spiral groove is provided on the top of the spiral slide plate, a slider fixedly installed with the spiral reinforcement rib is slidably installed on the top of the first spiral groove, a second spiral groove is provided on the surface of the steel cylinder close to the slider, and the slider is slidably installed inside the second spiral groove.

[0012] As a preferred technical solution of the present invention, two fixing rods for limiting the pressure plate are installed on the surface of the pad, and a sliding sleeve is slidably installed on the surface of the fixing rod, and the sliding sleeve is fixedly installed on one side of the pressure plate.

[0013] As a preferred technical solution of the present invention, a limiting slide is installed inside the sealing long plate for sliding through, and a triangular plate for removing the push rod is fixedly installed at one end of the limiting slide located inside the sealing long plate, and the triangular plate is located at the top of the pressure plate.

[0014] As a preferred technical solution of the present invention, it also includes a generator housing and a stator body, wherein the stator body and the rotor body are both installed inside the generator housing, and the rotor body is installed inside the stator body, rotor blades and rotor guard rings are respectively installed at both ends of the rotor body, and a conductive ring is installed on the inner wall of the claw pole close to the rotor core.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts multiple first silicon steel sheet assemblies to form a cylindrical iron core. The silicon steel sheet has a very high magnetic permeability, which means that it can absorb the magnetic field more effectively, thereby reducing hysteresis loss and eddy current loss, which helps to improve the efficiency of the motor. At the same time, by inserting a second silicon steel sheet assembly, the density of the silicon steel sheet in the rotor core is increased. The density of the silicon steel sheet has a direct impact on the magnetic properties of the motor. By changing the density of the silicon steel sheet, the size of the magnetic flux can be adjusted, thereby affecting the efficiency of the motor.

[0016] 2. The present invention installs magnetic domain parts on the side of the rotor. This design makes the direction of the magnetic moment in the magnetic domain gradually turn to the direction of the external magnetic field when the magnetic field acts on the rotor, causing the rotor to be magnetized and show magnetism to the outside. The interaction between the positive magnetic domain parts and the reverse magnetic domain parts not only enhances the interaction force between the magnetic domains, but also increases the average value of the magnetic moment, thereby significantly improving the magnetic permeability, so that the magnetic field efficiency of the generator is greatly improved.

[0017] 3. The spiral reinforcement ribs of the present invention can effectively increase the strength and rigidity of the rotor core. When the motor is running, the rotor core will be affected by various forces, including electromagnetic force, mechanical stress, etc. The spiral reinforcement ribs can better resist the effects of these forces and prevent the core from being deformed or damaged, thereby improving the overall carrying capacity. In addition, an electromagnetic shielding layer is installed in the gaps of the spiral reinforcement ribs, which effectively shields the electromagnetic interference inside the generator and ensures that the output current of the generator is stable and pure.

[0018] 4. The present invention realizes effective ventilation and heat dissipation inside the generator by providing ventilation grooves on the surface of the rotor shaft close to the cavity, and driving the sealing long plate to slide through an electric push rod to adjust the opening of the ventilation hole, wherein the through holes on the surface of the sealing long plate are connected to the gaps of the spiral reinforcement ribs, and the spiral reinforcement ribs can be driven to rotate by repeatedly pulling the sealing long plate, thereby improving the air flow effect and ensuring the stable operation of the generator in a high temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the generator housing of the present invention; Figure 2 It is a schematic diagram of the internal structure of the generator housing of the present invention; Figure 3 It is a schematic diagram of the rotor body structure of the present invention; Figure 4 It is a schematic diagram of the internal structure of the rotor body of the present invention; Figure 5 It is a schematic diagram of the steel cylinder structure of the present invention; Figure 6 This is a schematic structural diagram of a first silicon steel sheet assembly of the present invention; Figure 7 It is a schematic diagram of the internal structure of the magnetic reaction chamber of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the structure at A in FIG. Fig. 9 It is a schematic diagram of the spiral reinforcement structure of the present invention; Fig.10 It is a schematic diagram of the structure of the electromagnetic shielding element of the present invention; Fig.11 It is a schematic diagram of the internal structure of the rotating shaft of the present invention; Fig.12 It is a schematic diagram of the spiral slide structure of the present invention; Fig.13 It is a schematic diagram of the sealing long plate structure of the present invention; Fig.14 For the present invention Fig.13 Schematic diagram of the structure at B in FIG. Fig.15 It is a schematic diagram of the structure of the set square of the present invention.

[0020] In the figure: 1, generator housing; 2, stator body; 3, rotor body; 31, rotor blade; 32, conductive ring; 33, claw pole; 34, rotor guard ring; 35, rotor core; 351, steel cylinder; 352, air permeable groove; 353, first silicon steel sheet assembly; 354, second silicon steel sheet assembly; 355, magnetic reaction chamber; 356, positive magnetic domain component; 357, reverse magnetic domain component; 358, exhaust hole; 359, air permeable sponge; 3510, air cavity; 35 11. End ring; 3512. Side plate; 4. Rotating shaft; 5. Support mechanism; 51. Spiral reinforcement rib; 52. Rib plate; 53. Electromagnetic shielding member; 54. Ventilation mechanism; 541. Ventilation slot; 542. Sealing long plate; 543. Ventilation hole; 544. Electric push rod; 6. Auxiliary mechanism; 61. Limiting slide plate; 62. Push rod; 63. Pressure plate; 64. Spring; 65. Triangular plate; 66. Spiral slide plate; 67. Long slot; 68. Slider; 69. Pad. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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. 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.

[0022] See also Figure 1-15 The present invention provides a permanent magnet voltage-regulated brushless generator including a rotor body 3, a rotating shaft 4 is installed inside the rotor body 3, two claw poles 33 are symmetrically installed on the surface of the rotating shaft 4, a rotor core 35 is installed between the two claw poles 33, and the rotor core 35 includes a steel cylinder 351 installed inside the rotor body 3, and a plurality of first silicon steel sheet assemblies 353 for copper wire winding are installed around the circumference of the outer surface of the steel cylinder 351.

[0023] Among them, the claw poles 33 are usually made of permanent magnet materials, which can generate stable magnetic fields. In the generator, these magnetic fields interact with the magnetic fields generated by the stator windings to produce electromagnetic induction phenomena; the rotor core 35 is the carrier of the permanent magnet, which supports the permanent magnet and keeps it in a fixed position, which helps to ensure the stable distribution of the magnetic field lines, thereby improving the efficiency of the generator.

[0024] Furthermore, a plurality of first silicon steel sheet assemblies 353 are used to form a cylindrical rotor core 35. The silicon steel sheet has a very high magnetic permeability, which means that it can absorb the magnetic field more effectively, thereby reducing hysteresis loss. Hysteresis loss is the energy loss generated when the magnetic material is repeatedly magnetized in a magnetic field. Reducing hysteresis loss can significantly improve the efficiency of the motor. At the same time, the silicon steel sheet can form a non-conductive area through the production process, which also prevents eddy current loss of the rotor core 35. Eddy current loss is the energy loss caused by the induced current generated inside the rotor core 35 when the magnetic field changes in the core. Reducing eddy current loss also helps to improve the efficiency of the motor.

[0025] In the technical solution of the embodiment of the present application, a second silicon steel sheet assembly 354 is slidably installed inside the claw pole 33 close to the first silicon steel sheet assembly 353, and the second silicon steel sheet assembly 354 is inserted inside the first silicon steel sheet assembly 353, an air cavity 3510 is opened between the second silicon steel sheet assembly 354 and the claw pole 33, a magnetic reaction cavity 355 connected to the air cavity 3510 is opened inside the claw pole 33, a forward magnetic domain component 356 for lengthening and enhancing the magnetic field is installed on the inner top wall of the magnetic reaction cavity 355, and a reverse magnetic domain component 357 for compressing and weakening the magnetic field is slidably installed inside the magnetic reaction cavity 355.

[0026] Among them, when the rotor core 35 is in use, the density of the silicon steel sheets in the rotor core 35 can be increased by inserting the second silicon steel sheet assembly 354 into the first silicon steel sheet assembly 353 and controlling the insertion speed. The density of the silicon steel sheets has a direct effect on the magnetic properties of the motor. By changing the density of the silicon steel sheets, the size of the magnetic flux can be adjusted, thereby affecting the efficiency of the motor. A positive magnetic domain component 356 and a reverse magnetic domain component 357 are installed on the side of the rotor. This design allows the magnetic moment direction in the magnetic domain to gradually turn when the magnetic field acts on the rotor. The direction of the external magnetic field causes the rotor to be magnetized and show magnetism to the outside. The interaction between the forward magnetic domain component 356 and the reverse magnetic domain component 357 not only enhances the interaction force between the magnetic domains, but also increases the average value of the magnetic moment, thereby significantly improving the magnetic permeability, thereby greatly improving the magnetic field efficiency of the generator. At the same time, the interaction between the forward magnetic domain component 356 and the reverse magnetic domain component 357 will also drive the second silicon steel sheet assembly 354 to overlap with the first silicon steel sheet assembly 353 through air pressure, thereby changing the density of the silicon steel sheets in the rotor core 35.

[0027] In other embodiments, multiple first silicon steel sheet assemblies 353 are reinforced by end rings 3511, and multiple second silicon steel sheet assemblies 354 are reinforced by side plates 3512. Insulating paper is installed on the surfaces of the first silicon steel sheet assemblies 353 and the second silicon steel sheet assemblies 354. An exhaust hole 358 communicating with the outside is opened between the forward magnetic domain component 356 and the reverse magnetic domain component 357, and a breathable sponge 359 is installed inside the exhaust hole 358.

[0028] Among them, multiple first silicon steel sheet assemblies 353 are reinforced by end rings 3511, and multiple second silicon steel sheet assemblies 354 are reinforced by side plates 3512. This design not only improves the structural strength of the rotor, but also enhances its stability; the installation of insulating paper effectively prevents the short circuit problem between the silicon steel sheets, further improving the overall performance of the generator; through the action of the exhaust holes 358, the forward magnetic domain parts 356 and the reverse magnetic domain parts 357 can be repelled and moved smoothly, thereby compressing the space.

[0029] In other embodiments, a cavity is opened inside the steel cylinder 351, and a supporting mechanism 5 is arranged inside the cavity. The supporting mechanism 5 includes a spiral reinforcement rib 51 installed inside the cavity for reinforcing the supporting copper wire. The cross-section of the spiral reinforcement rib 51 is "S" shaped. The steel cylinder 351 is provided with a breathable groove 352 for heat dissipation on the gap surface near the first silicon steel sheet assembly 353.

[0030] Among them, the spiral reinforcement ribs 51 are composed of extended spiral blades, which are convenient for air supply. The spiral reinforcement ribs 51 can effectively increase the strength and rigidity of the rotor core 35. When the motor is running, the rotor core 35 will be affected by various forces, including electromagnetic force, mechanical stress, etc. The spiral reinforcement ribs 51 can better resist the effects of these forces and prevent the rotor core 35 from deformation or damage, thereby improving the overall load-bearing capacity.

[0031] In other embodiments, three ribs 52 are fixedly installed inside the spiral reinforcement rib 51 , and a plurality of electromagnetic shielding components 53 for shielding the internal magnetic field are installed on the surface of the rib 52 . The electromagnetic shielding components 53 are respectively installed in the gaps of the spiral reinforcement rib 51 .

[0032] Among them, an electromagnetic shielding layer is installed in the gap of the spiral reinforcement rib 51. This design effectively shields the electromagnetic interference inside the generator and ensures that the output current of the generator is stable and pure.

[0033] In other embodiments, a ventilation mechanism 54 is provided at a position of the rotating shaft 4 near the cavity, and the ventilation mechanism 54 includes a ventilation groove 541 opened on the surface of the rotating shaft 4, and the ventilation groove 541 is respectively connected to the cavity and the external space of the rotor body 3, and a ventilation groove 352 for heat dissipation is opened on the surface of the steel cylinder 351 near the first silicon steel sheet assembly 353.

[0034] Among them, by opening a ventilation groove 541 on the surface of the rotating shaft 4 to communicate with the inner cavity of the rotor core 35, when the motor is running, the ventilation groove 541 can promote air flow and take away the heat generated by the rotor core 35 and the rotor winding, thereby maintaining the temperature of the motor stable; the design of the ventilation groove 541 can also reduce the noise of the motor to a certain extent, and at the same time can reduce the turbulence and vortex of the airflow on the rotor surface, thereby reducing the noise level.

[0035] In other embodiments, a sealing long plate 542 is slidably installed on the surface of the ventilation groove 541, and a plurality of inclined ventilation holes 543 are opened on the surface of the sealing long plate 542. The plurality of ventilation holes 543 are connected with the gaps of the spiral reinforcement rib 51, and the ventilation holes 543 are connected with the outside through the inner cavity of the sealing long plate 542. An electric push rod 544 is installed on the surface of the rotating shaft 4, and the free end of the electric push rod 544 is fixedly connected to one end of the sealing long plate 542.

[0036] Among them, the sealing long plate 542 is driven to slide by the electric push rod 544, and then the opening of the ventilation hole 543 is adjusted, thereby realizing effective ventilation and heat dissipation inside the generator. The through holes on the surface of the sealing long plate 542 are connected with the gaps of the spiral reinforcement ribs 51. By repeatedly pulling the sealing long plate 542, the spiral reinforcement ribs 51 can be driven to rotate, thereby improving the air flow effect and ensuring the stable operation of the generator in a high temperature environment.

[0037] In other embodiments, an auxiliary mechanism 6 is provided inside the sealing long plate 542, and the auxiliary mechanism 6 includes a pad 69 installed inside the sealing long plate 542, a spring 64 is fixedly installed on the surface of the pad 69, a pressure plate 63 is fixedly installed on the free end of the spring 64, a push rod 62 for limiting the spiral slide 66 is installed on the top of the pressure plate 63, a long groove 67 is provided on the surface of the rotating shaft 4 close to the steel cylinder 351, a spiral slide 66 is slidably installed inside the long groove 67, and the push rod 62 is inserted inside the spiral slide 66, a first spiral groove is provided on the top of the spiral slide 66, a slider 68 fixedly installed with the spiral reinforcement rib 51 is slidably installed on the top of the first spiral groove, a second spiral groove is provided on the surface of the steel cylinder 351 close to the slider 68, and the slider 68 is slidably installed inside the second spiral groove.

[0038] Among them, when the sealing long plate 542 is installed, the electric push rod 544 is started to drive the sealing long plate 542 to move, so that the sealing long plate 542 slides inside the ventilation groove 541 until the sealing long plate 542 drives the internal push rod 62 to move to the inside of the spiral slide plate 66, thereby pushing the spiral slide plate 66 to slide and be installed inside the long groove 67. The spiral slide plate 66 drives the slider 68 to slide in the first spiral groove at the top of the spiral slide plate 66. At this time, the slider 68 will move along the second spiral groove, so that the slider 68 will drive the spiral reinforcement rib 51 to rotate, thereby improving the air flow effect and ensuring the stable operation of the generator in a high temperature environment; further, the spiral slide plate 66 is made of spiral sheet material, and the first spiral groove and the second spiral groove are both spiral grooves.

[0039] In other embodiments, two fixing rods for limiting the pressure plate 63 are installed on the surface of the pad 69 , and a sliding sleeve is slidably installed on the surface of the fixing rod, and the sliding sleeve is fixedly installed on one side of the pressure plate 63 .

[0040] The fixing rod can limit the position of the push rod 62 to ensure that the push rod 62 is smoothly inserted into the spiral slide plate 66 .

[0041] In other embodiments, a limiting slide plate 61 is installed in the interior of the sealing long plate 542 through which it slides. A triangular plate 65 for removing the push rod 62 is fixedly installed at one end of the limiting slide plate 61 located inside the sealing long plate 542 . The triangular plate 65 is located at the top of the pressure plate 63 .

[0042] Among them, by moving the limiting slide 61, the limiting slide 61 drives the triangular plate 65 to move, and the triangular plate 65 can drive the pressure plate 63 to be pressed down. At this time, the spring 64 is compressed, and the push rod 62 can move to the inside of the sealing long plate 542, thereby facilitating the disassembly of the sealing long plate 542, facilitating maintenance and replacement, and improving work efficiency.

[0043] In other embodiments, a generator housing 1 and a stator body 2 are also included. The stator body 2 and the rotor body 3 are both installed inside the generator housing 1, and the rotor body 3 is installed inside the stator body 2. Rotor blades 31 and rotor guard rings 34 are respectively installed at both ends of the rotor body 3, and a conductive ring 32 is installed on the inner wall of the claw pole 33 close to the rotor core 35.

[0044] Among them, the rotor blades 31 are usually used for air circulation inside the generator to ensure that the flow of internal heat flows in a specified direction and path, which helps to dissipate heat and maintain a stable operating temperature inside the generator; the rotor guard ring 34 ensures that the rotor remains stable at high speed rotation by providing additional support and fixing, thereby ensuring the normal operation of the generator; the conductive ring 32 is usually used to realize the transmission and distribution of current in a permanent magnet voltage-regulated brushless generator. The conductive ring 32 is installed on the inner wall of the claw pole 33 close to the rotor core 35, and is connected to the external circuit through mechanisms such as electromagnetic induction or electronic commutator, thereby realizing the transmission and distribution of current, and enabling the brushless generator to operate more efficiently and reliably, while reducing mechanical wear and noise.

[0045] In the description of the present invention, only the preferred specific implementation modes of the present invention are shown, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A permanent magnet voltage-regulated brushless generator, comprising a rotor body (3), characterized in that: A rotating shaft (4) is installed inside the rotor body (3); two claw poles (33) are symmetrically installed on the surface of the rotating shaft (4); a rotor core (35) is installed between the two claw poles (33); the rotor core (35) comprises a steel cylinder (351) installed inside the rotor body (3); a plurality of first silicon steel sheet assemblies (353) for copper wire winding are installed around the circumference of the outer surface of the steel cylinder (351); A second silicon steel sheet assembly (354) is slidably mounted inside the claw pole (33) close to the first silicon steel sheet assembly (353), and the second silicon steel sheet assembly (354) is inserted inside the first silicon steel sheet assembly (353); an air cavity (3510) is provided between the second silicon steel sheet assembly (354) and the claw pole (33); a magnetic reaction cavity (355) connected to the air cavity (3510) is provided inside the claw pole (33); a positive magnetic domain component (356) for lengthening and enhancing a magnetic field is mounted on an inner top wall of the magnetic reaction cavity (355); and a reverse magnetic domain component (357) for compressing and weakening a magnetic field is slidably mounted inside the magnetic reaction cavity (355).

2. A permanent magnet voltage-regulated brushless generator according to claim 1, characterized in that: The plurality of first silicon steel sheet assemblies (353) are reinforced by end rings (3511), and the plurality of second silicon steel sheet assemblies (354) are reinforced by side plates (3512). Insulating paper is installed on the surfaces of the first silicon steel sheet assemblies (353) and the second silicon steel sheet assemblies (354). An exhaust hole (358) communicating with the outside is provided between the forward magnetic domain component (356) and the reverse magnetic domain component (357), and a breathable sponge (359) is installed inside the exhaust hole (358).

3. A permanent magnet voltage-regulated brushless generator according to claim 2, characterized in that: A cavity is provided inside the steel cylinder (351), and a support mechanism (5) is provided inside the cavity. The support mechanism (5) comprises a spiral reinforcing rib (51) installed inside the cavity and used for reinforcing the supporting copper wire, and the cross section of the spiral reinforcing rib (51) is "S"-shaped. A ventilating groove (352) for heat dissipation is provided on the surface of the gap of the steel cylinder (351) close to the first silicon steel sheet assembly (353).

4. A permanent magnet voltage-regulated brushless generator according to claim 3, characterized in that: Three ribs (52) are fixedly mounted inside the spiral reinforcing rib (51), a plurality of electromagnetic shielding components (53) for shielding the internal magnetic field are mounted on the surface of the rib (52), and the plurality of electromagnetic shielding components (53) are respectively mounted in the gaps of the spiral reinforcing rib (51).

5. A permanent magnet voltage-regulated brushless generator according to claim 1, characterized in that: A ventilation mechanism (54) is provided at a position of the rotating shaft (4) close to the cavity. The ventilation mechanism (54) comprises ventilation grooves (541) for ventilation and heat dissipation, which are provided on the surface of the rotating shaft (4). The ventilation grooves (541) are respectively connected to the cavity and the external space of the rotor body (3). A ventilation groove (352) for heat dissipation is provided on the surface of the steel cylinder (351) close to the first silicon steel sheet assembly (353).

6. A permanent magnet voltage-regulated brushless generator according to claim 5, characterized in that: A sealing long plate (542) for reducing external water vapor interference is slidably mounted on the surface of the ventilation groove (541), and a plurality of inclined ventilation holes (543) are opened on the surface of the sealing long plate (542). The plurality of ventilation holes (543) are connected to the gaps of the spiral reinforcement rib (51), and the ventilation holes (543) are connected to the outside through the inner cavity of the sealing long plate (542). An electric push rod (544) is mounted on the surface of the rotating shaft (4), and the free end of the electric push rod (544) is fixedly connected to one end of the sealing long plate (542).

7. A permanent magnet voltage-regulated brushless generator according to claim 6, characterized in that: An auxiliary mechanism (6) is provided inside the sealing long plate (542), and the auxiliary mechanism (6) comprises a pad (69) installed inside the sealing long plate (542); a spring (64) is fixedly installed on the surface of the pad (69); a pressure plate (63) is fixedly installed on the free end of the spring (64); a top rod (62) for limiting the spiral slide plate (66) is installed on the top of the pressure plate (63); a long groove (67) is provided on the surface of the rotating shaft (4) close to the steel cylinder (351); a spiral slide plate (66) is slidably installed inside the long groove (67), and the top rod (62) is inserted inside the spiral slide plate (66); a first spiral groove is provided on the top of the spiral slide plate (66); a slider (68) fixedly installed with the spiral reinforcement rib (51) is slidably installed on the top of the first spiral groove; a second spiral groove is provided on the surface of the steel cylinder (351) close to the slider (68); the slider (68) is slidably installed inside the second spiral groove.

8. A permanent magnet voltage-regulated brushless generator according to claim 7, characterized in that: Two fixing rods for limiting the position of the pressure plate (63) are mounted on the surface of the pad (69), and a sliding sleeve is slidably mounted on the surface of the fixing rod, and the sliding sleeve is fixedly mounted on one side of the pressure plate (63).

9. A permanent magnet voltage-regulated brushless generator according to claim 7, characterized in that: A limiting slide plate (61) is installed in a sliding manner inside the sealing long plate (542), and a triangular plate (65) for removing the push rod (62) is fixedly installed on one end of the limiting slide plate (61) located inside the sealing long plate (542), and the triangular plate (65) is located at the top end of the pressure plate (63).

10. The permanent magnet voltage-regulated brushless generator according to claim 1, characterized in that: The invention also comprises a generator housing (1) and a stator body (2), wherein the stator body (2) and the rotor body (3) are both mounted inside the generator housing (1), and the rotor body (3) is mounted inside the stator body (2), rotor blades (31) and rotor guard rings (34) are respectively mounted at two ends of the rotor body (3), and a conductive ring (32) is mounted on the inner wall of the claw pole (33) close to the rotor core (35).

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