CN217849058U

CN217849058U - Variable-speed generator with coil and permanent magnet mixed excitation

Info

Publication number: CN217849058U
Application number: CN202221803229.5U
Authority: CN
Inventors: 温卓泰; 庄德华
Original assignee: Beijing Huanyu United Technology Co ltd
Current assignee: Beijing Huanyu United Technology Co ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2022-11-18
Anticipated expiration: 2032-07-07

Abstract

The utility model discloses a variable-speed generator of coil and permanent magnet hybrid excitation, including the generator main part, the generator main part includes the rotor shaft, the cover is rotated on the rotor shaft and is equipped with the front end housing of taking the wind delivery hole and takes the rear end housing in wind inlet hole, and one side that front end housing and rear end housing are close to each other is all established to the opening, and front end housing and rear end housing thread tightening form an installation cavity together, and front end housing and rear end housing internal fixed mounting have the same stator core that is located the installation cavity, and stator core internal fixed cover is equipped with stator enameled wire winding. The utility model discloses a mode that coil and permanent magnet carry out hybrid excitation for the generator is at the in-process of rotational speed constantly changing, and three-phase voltage maintains AC325 0.2 within range always, and then satisfies the work needs of output voltage invariable basically.

Description

Variable-speed generator with mixed excitation of coil and permanent magnet

Technical Field

The utility model relates to a variable speed generator technical field especially relates to a variable speed generator of coil and permanent magnet hybrid excitation.

Background

The electric excitation generator can continuously adjust the magnitude of the excitation current along with the change of the rotating speed, so that the control of the output voltage under the working condition of large-range rotating speed change is easier to realize; the permanent magnet motor can output larger power under the same volume, and based on the advantages of the two excitation generators, a variable-speed generator with mixed excitation of a coil and a permanent magnet is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a variable-speed generator with mixed excitation of a coil and a permanent magnet.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a variable-speed generator of coil and permanent magnet hybrid excitation, including generator main body, generator main body includes the rotor shaft, it is equipped with the front end housing of taking the wind delivery hole and the rear end cap of taking the wind inlet hole to rotate the cover on the rotor shaft, one side that front end housing and rear end cap are close to each other all establishes to the opening, front end housing and rear end cap thread tightening form an installation cavity together, fixed mounting has the same stator core that is located the installation cavity in front end housing and the rear end cap, fixed cover is equipped with stator enameled wire winding in the stator core, fixed cover is equipped with the rotor core that is located stator enameled wire winding on the rotor shaft, the outside of rotor core is inlayed and is equipped with a plurality of permanent magnets, wherein the quantity of permanent magnet is 16, the permanent magnet adopts the label 42UH, the temperature resistant magnetic material that can reach 180 ℃, the left side movable contact of 16 permanent magnets has the same fixed rotor claw pole of establishing on the rotor shaft of fixed cover, stator enameled wire winding movable cover is established on the first rotor shaft, the left side of stator enameled wire winding is established on the first rotor claw pole, the left side of first rotor claw pole is equipped with the second claw pole of fixed establishment on the rotor shaft, the rotor shaft is equipped with the right side of enameled wire winding claw pole supporting body, the rotor shaft is equipped with the supporting body of the supporting body, the supporting body of rotor shaft is equipped with the fixed rotor shaft and is equipped with the supporting body of the supporting body, the supporting body of the rotor shaft, the rotor shaft assembly, the supporting body of the rotor shaft is equipped with the carbon brush head of rotor shaft assembly.

Preferably, a front bearing is fixedly embedded in the inner wall of the right side of the front end cover, the inner side of an inner ring of the front bearing is fixedly connected with the outer side of the rotor shaft, and a bearing cover plate used for shielding the front bearing is fixedly connected to the inner wall of the right side of the front end cover.

Preferably, a rear bearing is fixedly embedded on the inner wall of the left side of the rear end cover, and the inner side of an inner ring of the rear bearing is fixedly connected with the outer side of the rotor shaft.

Preferably, the right side is seted up to the inboard of belt pulley for the spacing groove that the opening set up, and movable contact has belt pulley lock nut on the left side inner wall of spacing groove, and the external thread groove has been seted up in the outside of rotor shaft, and belt pulley lock nut thread bush is established in the external thread groove, and belt pulley lock nut is used for realizing the installation of belt pulley and rotor shaft.

Preferably, a key groove is formed in the top of the rotor shaft, a key pin is movably sleeved in the key groove, and the top of the key pin is connected with the inner wall of the top of the fan blade.

Preferably, the rotor shaft is fixedly sleeved with a permanent magnet installation fixing plate used for fixedly installing 16 permanent magnets, the left side of the permanent magnet installation fixing plate is in movable contact with the right side of the rotor core, and the permanent magnet installation fixing plate is used for shielding the rotor core.

Preferably, the right side of the front end cover is provided with four first threaded holes at equal intervals in an annular shape, the left side of the rear end cover is provided with four second threaded holes in an annular shape, the first threaded holes and the corresponding second threaded holes are internally threaded and sleeved with the same connecting bolt, and the front end cover and the rear end cover are fixed together through the four connecting bolts in a threaded manner.

Preferably, the first rotor claw pole, the enameled wire winding support body, the rotor claw pole enameled wire winding and the second rotor claw pole form an electric excitation structure, and the 16 permanent magnets, the permanent magnet installation fixing plate and the rotor iron core form a permanent magnet excitation structure.

Compared with the prior art, the beneficial effects of the utility model are that:

the permanent magnet mounting fixing plate, the permanent magnet, the rotor iron core, the first rotor claw pole, the enameled wire winding supporting body, the rotor claw pole enameled wire winding, the second rotor claw pole and the stator enameled wire winding are matched, so that the three-phase voltage can be always maintained within the range of AC325 +/-0.2 in the process of continuously changing the rotating speed, and the working requirement of basically constant output voltage is further met;

the utility model discloses a mode that coil and permanent magnet carry out hybrid excitation for the generator is at the in-process that the rotational speed constantly changes, and three-phase voltage maintains AC325 0.2 within range always, and then satisfies the work needs that output voltage is invariable basically.

Drawings

Fig. 1 is an exploded view of a variable speed generator with a coil and permanent magnet hybrid excitation according to the present invention;

fig. 2 is a schematic cross-sectional structural diagram of a variable speed generator with a coil and permanent magnet hybrid excitation according to the present invention;

fig. 3 is an explosion diagram of the rotor shaft, the permanent magnet mounting/fixing plate, the permanent magnet, the rotor core, the first rotor claw pole, the enameled wire winding support body, the rotor claw pole enameled wire winding and the second claw pole for variable-speed power generation using the excitation coil and the permanent magnet at the same time;

fig. 4 is an exploded view of a stator structure in variable speed power generation using both the field coil and the permanent magnet according to the present invention.

In the figure: 1. a belt pulley lock nut; 2. a pulley; 3. a fan blade; 4. positioning a ring; 5. a front end cover; 6. a front bearing; 7. a bearing cover plate; 8. a key pin; 9. a rotor shaft; 10. a connecting bolt; 11. a permanent magnet is arranged on the fixing plate; 12. a permanent magnet; 13. a rotor core; 14. a first rotor claw pole; 15. a support body of the enameled wire winding; 16. rotor claw pole enameled wire winding; 17. a second rotor claw pole; 18. stator enameled wire winding; 19. a stator core; 20. a rear bearing; 21. a rear end cap; 22. a collecting ring; 23. a carbon brush assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, a variable speed generator with mixed excitation of coil and permanent magnet, comprising a generator main body, the generator main body includes a rotor shaft 9, a front end cover 5 with an air delivery hole and a rear end cover 21 with an air inlet hole are rotatably sleeved on the rotor shaft 9, wherein a front bearing 6 is fixedly embedded on the inner wall of the right side of the front end cover 5, the inner side of the inner ring of the front bearing 6 is fixedly connected with the outer side of the rotor shaft 9, the front bearing 6 has an effect of rotatably mounting the rotor shaft 9, a bearing cover plate 7 for shielding the front bearing 6 is fixedly connected on the inner wall of the right side of the front end cover 5, a first through hole for the rotor shaft 9 to pass through is opened on the right side of the bearing cover plate 7, a rear bearing 20 is fixedly embedded on the inner wall of the left side of the rear end cover 21, the inner side of the inner ring of the rear bearing 20 is fixedly connected with the outer side of the rotor shaft 9, the rear bearing 20 has an effect of rotatably mounting the rotor shaft 9, one side of the front end cover 5 and the rear end cover 21 close to each other is opened, the front end cover 5 and the rear end cover 21 are fixed together with a mounting chamber, the stator winding forming a mounting chamber, the stator winding 12 is provided with four stator winding 12, the stator core 12 is provided with four stator winding 12, the stator core, the stator cover 12 is provided with a stator, the stator cover 12, the stator cover 12 is provided with four stator core, the stator core 12, the stator core, the stator cover 12 is provided with the stator cover, the stator cover 12, the permanent magnet adopts a magnetic material with the label of 42UH and the temperature resistance of 180 ℃, wherein a permanent magnet mounting and fixing plate 11 for fixedly mounting 16 permanent magnets 12 is fixedly sleeved on a rotor shaft 9, the left side of the permanent magnet mounting and fixing plate 11 is movably contacted with the right side of a rotor core 13, the permanent magnet mounting and fixing plate 11 is used for shielding the rotor core 13, the right side of the permanent magnet mounting and fixing plate 11 is provided with a second through hole for the rotor shaft 9 to fixedly penetrate, the left sides of the 16 permanent magnets 12 are movably contacted with a first rotor claw pole 14 fixedly sleeved on the rotor shaft 9, a stator enameled wire winding 18 is movably sleeved on the first rotor claw pole 14, the left side of the first rotor claw pole 14 is provided with a second rotor claw pole 17 fixedly sleeved on the rotor shaft 9, and the second rotor claw pole 17 and the first rotor claw pole 14 are both eight claw poles, the same enameled wire winding supporting body 15 is fixedly installed between the first rotor claw pole 14 and the second rotor claw pole 17, a rotor claw pole enameled wire winding 16 is fixedly sleeved in the enameled wire winding supporting body 15, wherein the first rotor claw pole 14, the enameled wire winding supporting body 15, the rotor claw pole enameled wire winding 16 and the second rotor claw pole 17 form an electric excitation structure which is a first section excitation structure, 16 permanent magnets 12, a permanent magnet installation fixing plate 11 and a rotor iron core 13 form a permanent magnet excitation structure which is a second section excitation structure, a knurling structure is processed on the outer side of a rotor shaft 9, the two sections excitation structures are connected into a whole by a press through the rotor shaft knurling structure, the right side of a front end cover 5 is provided with fan blades 3 fixedly sleeved on the rotor shaft 9, wherein the left side of the fan blades 3 is fixedly connected with a positioning ring 4 movably sleeved on the rotor shaft 9, and the positioning ring 4 plays a role in positioning the fan blades 3, the keyway has been seted up at the top of rotor shaft 9, the movable sleeve is equipped with key pin 8 in the keyway, the top of key pin 8 is connected with flabellum 3's top inner wall, realize spacing to flabellum 3 through key pin 8, be used for supplementary heat dissipation when flabellum 3 pivoted, flabellum 3's right side is equipped with the belt pulley 2 of suit on rotor shaft 9, belt pulley 2 threaded fixation is on rotor shaft 9, wherein belt pulley 2's inboard is seted up the right side and is the spacing groove that the opening set up, movable contact has belt pulley lock nut 1 on the left side inner wall of spacing groove, the external thread groove has been seted up in rotor shaft 9's the outside, belt pulley lock nut 1 thread bush is established at the external thread inslot, through belt pulley lock nut 1, realize fixing belt pulley 2, the left side of rear end housing 21 is equipped with fixed cover and establishes collecting ring 22 on rotor shaft 9, collecting ring 22's top cooperation is provided with collecting ring assembly 23, the utility model discloses a coil and permanent magnet 12 carry out hybrid excitation's mode, make the generator in the constantly changeable process of rotational speed, the carbon brush is at three-phase voltage is kept in the AC325 within a range all the range, and then satisfy the invariable work needs of output voltage.

The working principle is as follows: the rotor comprises eight-claw first rotor claw poles 14, enameled wire winding supporting bodies 15, rotor claw pole enameled wire windings 16 and eight-claw second rotor claw poles 17, wherein the eight-claw first rotor claw poles are electrically excited, the eight-claw first rotor claw poles are a first section of excitation structure, the 16 permanent magnets 12, a permanent magnet mounting and fixing plate 11 and a rotor iron core 13 form a permanent magnet excitation structure, the eight-claw second section of excitation structure is a second section of excitation structure, a knurling structure is machined on the outer side of a rotor shaft 9, and the two sections of excitation structures are connected into a whole through a rotor shaft knurling structure by a press machine;

in the operation of the generator main body, the rotor shaft 9 rotates, the rotor shaft 9 drives the rotor iron core 13, the permanent magnet 12, the first rotor claw pole 14, the rotor claw pole enameled wire winding 16, the second rotor claw pole 17 and the fan blade 3 to rotate, the fan blade 3 rotates and simultaneously carries out auxiliary heat dissipation, in the operation process, in the whole process of the output of the generator main body, the current of the rotor claw pole enameled wire winding 16 is continuously adjusted along with the change of the rotating speed, the three-phase voltage output by the generator main body is ensured to be always maintained at about AC235V, in the process of the continuous change of the rotating speed, the three-phase voltage is always maintained within the range of AC325 +/-0.2, and the work requirement that the output voltage is basically constant can be met.

In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a variable-speed generator of coil and permanent magnet hybrid excitation, which comprises a generator main body, the generator main body includes rotor shaft (9), a serial communication port, it is equipped with front end housing (5) of taking the defeated wind hole and rear end cap (21) of taking the inlet air hole to rotate the cover on rotor shaft (9), one side that front end housing (5) and rear end cap (21) are close to each other all establishes to the opening, front end housing (5) and rear end cap (21) threaded fixation form an installation cavity together, fixed mounting has same stator core (19) that are located the installation cavity in front end housing (5) and rear end cap (21), stator core (19) endotheca is equipped with stator enameled wire winding (18), fixed cover is equipped with rotor core (13) that are located stator enameled wire winding (18) on rotor shaft (9), the outside of rotor core (13) is inlayed and is equipped with a plurality of permanent magnets (12), the left side movable contact of a plurality of permanent magnet (12) has fixed cover to establish first rotor claw pole (14) on rotor shaft (9), stator enameled wire winding (18) movable cover is established on first rotor claw pole (14), rotor claw pole winding (14) is established on the left side of rotor claw pole (17) and rotor claw pole fixed cover are equipped with second claw pole (17) on the rotor claw pole (17) and rotor claw pole supporting body (17), the rotor claw pole enameled wire winding (16) is fixedly sleeved in the enameled wire winding supporting body (15), the right side of the front end cover (5) is provided with a fan blade (3) fixedly sleeved on the rotor shaft (9), the right side of the fan blade (3) is provided with a belt pulley (2) sleeved on the rotor shaft (9), the belt pulley (2) is fixed on the rotor shaft (9) in a threaded mode, the left side of the rear end cover (21) is provided with a collecting ring (22) fixedly sleeved on the rotor shaft (9), and the top of the collecting ring (22) is provided with a carbon brush assembly (23) in a matched mode.

2. The variable-speed generator with mixed excitation of the coil and the permanent magnet according to claim 1, wherein a front bearing (6) is fixedly embedded on the inner wall of the right side of the front end cover (5), the inner side of the inner ring of the front bearing (6) is fixedly connected with the outer side of the rotor shaft (9), and a bearing cover plate (7) used for shielding the front bearing (6) is fixedly connected on the inner wall of the right side of the front end cover (5).

3. The variable-speed generator excited by mixing a coil and a permanent magnet according to claim 1, wherein a rear bearing (20) is fixedly embedded on the inner wall of the left side of the rear end cover (21), and the inner side of the inner ring of the rear bearing (20) is fixedly connected with the outer side of the rotor shaft (9).

4. The variable-speed generator excited by mixing a coil and a permanent magnet according to claim 1, wherein a limiting groove with an opening at the right side is formed in the inner side of the belt pulley (2), a belt pulley locking nut (1) is movably contacted with the inner wall of the left side of the limiting groove, an external thread groove is formed in the outer side of the rotor shaft (9), and the belt pulley locking nut (1) is sleeved in the external thread groove in a threaded manner.

5. The variable-speed generator excited by the coil and the permanent magnet in a mixed manner according to claim 1, wherein a key groove is formed in the top of the rotor shaft (9), a key pin (8) is movably sleeved in the key groove, and the top of the key pin (8) is connected with the inner wall of the top of the fan blade (3).

6. A variable speed generator with mixed excitation of coils and permanent magnets according to claim 1, wherein a permanent magnet mounting and fixing plate (11) for fixedly mounting a plurality of permanent magnets (12) is fixedly sleeved on the rotor shaft (9), and the left side of the permanent magnet mounting and fixing plate (11) is in movable contact with the right side of the rotor core (13).

7. The variable-speed generator excited by mixing a coil and a permanent magnet according to claim 1, wherein four first threaded holes are annularly and equidistantly formed in the right side of the front end cover (5), four second threaded holes are annularly and equidistantly formed in the left side of the rear end cover (21), the same connecting bolt (10) is sleeved in the first threaded holes and the corresponding second threaded holes in a threaded manner, and the front end cover (5) and the rear end cover (21) are fixed together through the four connecting bolts (10) in a threaded manner.

8. The variable-speed generator excited by a coil and a permanent magnet in a mixed mode according to claim 1, wherein the first rotor claw pole (14), the enameled wire winding support body (15), the rotor claw pole enameled wire winding (16) and the second rotor claw pole (17) form an electric excitation structure, and the permanent magnet excitation structure is formed by the permanent magnets (12), the permanent magnet installation fixing plate (11) and the rotor iron core (13).