CN217849056U

CN217849056U - Variable-speed generator simultaneously using excitation coil and permanent magnet

Info

Publication number: CN217849056U
Application number: CN202221805106.5U
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 use variable speed generator of excitation coil and permanent magnet simultaneously, including the generator main part, the generator main part includes the rotor shaft, the last rotation sleeve of rotor shaft is equipped with the front end housing of taking defeated wind hole and the rear end cap of fresh air inlet, and one side that front end housing and rear end cap are close to each other all establishes to the opening, and front end housing and rear end cap thread tightening form an installation cavity together, and front end housing and rear end cap internal fixed mounting have the same stator core that is located the installation cavity. The utility model discloses can adopt an annular permanent magnet, when generator main part leads to the three-phase voltage too high because of the rotational speed is too high, the exciting current direction of conversion rotor claw utmost point enameled wire winding to adjust exciting current's size constantly, make the three-phase voltage of generator main part output maintain about AC 235V.

Description

Variable-speed generator simultaneously using excitation coil and permanent magnet

Technical Field

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

Background

In the field of automobile generators, the driving of the generator is provided by an automobile engine, and the rotating speed of the engine is constantly changed during the running process of the automobile, so that the working rotating speed of the generator is constantly changed. The generator exciting the magnetic field through the exciting winding can adjust the intensity of the exciting magnetic field at any time, so that the output voltage of the generator can be in a constant state and cannot fluctuate greatly along with the change of the rotating speed of the generator; the generator adopting the permanent magnet to provide the magnetic field can provide larger output power under the same volume, but the permanent magnet generator is difficult to meet the working requirement of basically constant output voltage when the rotating speed changes, especially when the rotating speed change amplitude is larger.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art, and providing a variable-speed generator simultaneously using a magnet exciting 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 but use excitation coil and permanent magnet's variable speed generator simultaneously, including generator main body, generator main body includes the rotor shaft, it is equipped with the rear end cap of front end housing and the fresh air inlet of taking defeated wind 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 first rotor claw pole that is located stator enameled wire winding on the rotor shaft, fixed cover is equipped with the second rotor claw pole on the rotor shaft, the same movable sleeve is equipped with the cyclic annular permanent magnet on the rotor shaft in the left side of first rotor claw pole and the right side of second rotor claw pole, wherein cyclic annular permanent magnet adopts 52UH, the temperature resistant reaches 180 ℃, first rotor claw pole and second rotor claw pole are eight claw poles, fixed cover is equipped with the winding skeleton on the cyclic annular permanent magnet winding skeleton, fixed cover is equipped with rotor claw pole winding skeleton, the right side is equipped with the flabellum fixed on the rotor shaft, the right side is equipped with the flabellum when the rotor shaft, the right side is equipped with the fan blade is equipped with the heat dissipation screw thread tightening on the rotor shaft, the left side, the rotor shaft, the supplementary ring assembly of rotor shaft, the fan blade is equipped with the cooperation of fixing, the fan blade, the fan assembly of fixing the top of rotor shaft, the fan blade.

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 in 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 inner side of the belt pulley is provided with a limiting groove with a right side arranged for the opening, the inner wall of the left side of the limiting groove is movably contacted with a belt pulley locking nut, the outer side of the rotor shaft is provided with an outer thread groove, and the belt pulley locking nut is sleeved on the outer thread groove in a threaded manner.

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

Preferably, the rotor shaft is fixedly sleeved with two baffles, and one sides of the two baffles, which are close to each other, are respectively in movable contact with one sides of the first rotor claw pole and the second rotor claw pole, which are far away from each other.

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 at equal intervals in an annular shape, the first threaded holes and the corresponding second threaded holes are sleeved with the same connecting bolt in a threaded manner, 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 annular permanent magnet, the winding framework, the rotor claw pole enameled wire winding and the second rotor claw pole form a rotor structure, and the rotor structure and the rotor shaft are combined into a whole through a press machine.

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

through the matching of the rotor shaft, the first rotor claw pole, the annular permanent magnet, the rotor claw pole enameled wire winding, the second rotor claw pole, the stator claw pole enameled wire winding and the stator iron core, when the three-phase voltage is overhigh due to overhigh rotating speed of the generator main body, the direction of the excitation current of the rotor claw pole enameled wire winding can be switched, and the size of the excitation current is continuously adjusted, so that the three-phase voltage output by the generator main body is maintained at about AC 235V;

the utility model discloses can adopt an annular permanent magnet, when generator main part leads to the three-phase voltage too high because of the rotational speed is too high, the exciting current direction of conversion rotor claw utmost point enameled wire winding to adjust exciting current's size constantly, make the three-phase voltage of generator main part output maintain about AC 235V.

Drawings

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

fig. 2 is a schematic cross-sectional view of a variable speed generator using both field coils and permanent magnets according to the present invention;

fig. 3 is an exploded view of a rotor structure of a variable speed generator using both field coils and permanent magnets according to the present invention;

fig. 4 is an exploded view of a stator structure of a variable speed generator using both field coils and permanent magnets according to the present invention.

In the figure: 1. a pulley lock nut; 2. a pulley; 3. a fan blade; 4. positioning rings; 5. a front end cap; 6. a front bearing; 7. a bearing cover plate; 8. a key pin; 9. a rotor shaft; 10. a connecting bolt; 11. a first rotor claw pole; 12. an annular permanent magnet; 13. a winding framework; 14. rotor claw pole enameled wire winding; 15. a second rotor claw pole; 16. stator enameled wire winding; 17. a stator core; 18. a rear bearing; 19. a rear end cap; 20. a collector ring; 21. 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 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 using both excitation coil and permanent magnet comprises a generator body including a rotor shaft 9, a front end cover 5 with an air delivery hole and a rear end cover 19 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, 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, the front bearing 6 has the effect of rotatably mounting the rotor shaft 9 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 formed on the right side of the bearing cover plate 7, a rear bearing 18 is fixedly embedded on the inner wall of the left side of the rear end cover 19, the inner side of the inner ring of the rear bearing 18 is fixedly connected with the outer side of the rotor shaft 9, the rear bearing 18 has the effect of rotatably mounting the rotor shaft 9 on the inner wall of the left side of the rear end cover 19, one side of the front end cover 5, which is close to the rear end cover 19, is provided with an opening, the front end cover 5 and the rear end cover 19 are fixed together by threads to form a mounting cavity, wherein the right side of the front end cover 5 is provided with four first threaded holes at equal intervals in an annular shape, the left side of the rear end cover 19 is provided with four second threaded holes at equal intervals in an annular shape, the first threaded holes and the corresponding second threaded holes are internally and threadedly sleeved with the same connecting bolt 10, the front end cover 5 and the rear end cover 19 are fixed together by the four connecting bolts 10 in a threaded manner, the front end cover 5 and the rear end cover 19 are internally and fixedly provided with the same stator core 17 positioned in the mounting cavity, the stator core 17 is internally and fixedly sleeved with a stator enameled wire winding 16, and the rotor shaft 9 is fixedly sleeved with a first rotor claw pole 11 positioned in the stator enameled wire winding 16, a second rotor claw pole 15 is fixedly sleeved on the rotor shaft 9, wherein the first rotor claw pole 11 and the second rotor claw pole 15 are eight-claw rotor claw poles, the same annular permanent magnet 12 movably sleeved on the rotor shaft 9 is embedded on the left side of the first rotor claw pole 11 and the right side of the second rotor claw pole 15, the annular permanent magnet 12 adopts 52UH and resists temperature reaching 180 ℃, a winding framework 13 is fixedly sleeved on the annular permanent magnet 12, a rotor claw pole enameled wire winding 14 is fixedly sleeved on the winding framework 13, the first rotor claw pole 11, the annular permanent magnet 12, the winding framework 13, the rotor claw pole enameled wire winding 14 and the second rotor claw pole 15 form a rotor structure, the rotor structure and the rotor shaft 9 are combined into a whole through a press machine, two baffle plates are fixedly sleeved on the rotor shaft 9, one sides of the two baffle plates, which are close to each other, are respectively in movable contact with one sides of the first rotor claw pole 11 and the second rotor claw pole 15, which are far away from each other, the two baffles are used for shielding a first rotor claw pole 11 and a second rotor claw pole 15, the right sides of the baffles are provided with second through holes for a rotor shaft 9 to pass through, the right side of a front end cover 5 is provided with fan blades 3 fixedly sleeved on the rotor shaft 9, the left sides of the fan blades 3 are fixedly connected with positioning rings 4 movably sleeved on the rotor shaft 9, the positioning rings 4 have a positioning effect on the fan blades 3, the top of the rotor shaft 9 is provided with a key groove, a key pin 8 is movably sleeved in the key groove, the top of the key pin 8 is connected with the inner wall of the top of the fan blades 3, the key pin 8 has a positioning effect on the fan blades 3, the right sides of the fan blades 3 are provided with belt pulleys 2 sleeved on the rotor shaft 9, the belt pulleys 2 are fixed on the rotor shaft 9 in a threaded manner, the inner sides of the belt pulleys 2 are provided with limiting grooves with openings on the right sides, the inner walls on the left sides of the limiting grooves are movably contacted with belt pulley locking nuts 1, the external thread groove has been seted up in the outside of rotor shaft 9, and 1 thread bush of belt pulley lock nut establishes on the external thread groove, and the left side of rear end cap 19 is equipped with fixed cover and establishes collecting ring 20 on rotor shaft 9, and collecting ring 20's top cooperation is provided with carbon brush assembly 21, the utility model discloses can adopt an annular permanent magnet 12, when the generator main part leads to the three-phase voltage too high because of the rotational speed is too high, the excitation current direction of conversion rotor claw utmost point enameled wire winding 14 to constantly adjust excitation current's size, make the three-phase voltage of generator main part output maintain about AC 235V.

The working principle is as follows: when the generator is used, in the operation process of the generator main body, the rotor shaft 9 rotates, the rotor shaft 9 drives the first rotor claw pole 11 with eight claws, the annular permanent magnet 12, the rotor claw pole enameled wire winding 14, the second rotor claw pole 15 with eight claws and the fan blades 3 to rotate, wherein the fan blades 3 are used for auxiliary heat dissipation while rotating, the current of the rotor claw pole enameled wire winding 14 is continuously adjusted along with the change of the rotating speed of the generator main body, so that the three-phase voltage output by the generator main body is maintained at about AC235V, when the rotating speed is too high or the load is too small, the current direction in the rotor claw pole enameled wire winding 14 is changed, and at the moment, along with the continuous increase of the rotating speed of the generator main body, the exciting current after the direction is changed continues to increase, so that the three-phase output voltage of the generator is maintained at about 235V.

In the description of the present application, it should be noted that, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected" and "connected" should 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 intermediary, and a communication 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 situations.

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 use variable speed generator of excitation coil and permanent magnet simultaneously, including generator main body, 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 housing (19) of taking the inlet air hole to rotate the cover on rotor shaft (9), one side that front end housing (5) and rear end housing (19) are close to each other all establishes the opening, front end housing (5) and rear end housing (19) threaded fixation form an installation cavity together, fixed mounting has same stator core (17) that are located the installation cavity in front end housing (5) and rear end housing (19), stator core (17) endotheca is equipped with stator enameled wire winding (16), fixed cover is equipped with first rotor claw pole (11) that are located stator enameled wire winding (16) on rotor shaft (9), fixed cover is equipped with second rotor claw pole (15) on rotor shaft (9), the left side of first rotor claw pole (11) and the right side of second rotor claw pole (15) have cyclic annular rotor winding to inlay and establish on rotor winding (9) inlay cyclic annular permanent magnet winding (12), fixed cover (13) are equipped with fixed cover on rotor shaft (13) of rotor winding (9), fixed cover is equipped with cyclic annular permanent magnet (13) on rotor shaft skeleton (13), the right side of flabellum (3) is equipped with belt pulley (2) of suit on rotor shaft (9), and belt pulley (2) threaded fixation is on rotor shaft (9), and the left side of rear end cover (19) is equipped with fixed cover and establishes collecting ring (20) on rotor shaft (9), and the top cooperation of collecting ring (20) is provided with carbon brush assembly (21).

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

3. A variable speed generator using both field coils and permanent magnets according to claim 1, wherein a rear bearing (18) is fitted and fixed to the left inner wall of the rear cover (19), and the inner side of the inner ring of the rear bearing (18) is fixedly connected to the outer side of the rotor shaft (9).

4. The variable speed generator using the excitation coil and the permanent magnet simultaneously as claimed in claim 1, wherein the pulley (2) has a right-side limiting groove opened therein, a pulley lock nut (1) is movably contacted with an inner wall of the left side of the limiting groove, an outer thread groove is formed on an outer side of the rotor shaft (9), and the pulley lock nut (1) is threadedly engaged with the outer thread groove.

5. The variable speed generator using both the excitation coil and the permanent magnet according to claim 1, wherein the top of the rotor shaft (9) is provided with a key slot, a key pin (8) is movably sleeved in the key slot, 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 using both field coils and permanent magnets according to claim 1, wherein the rotor shaft (9) is fixedly sleeved with two baffles, and the sides of the two baffles close to each other are in movable contact with the sides of the first rotor claw pole (11) and the second rotor claw pole (15) away from each other.

7. The variable speed generator using the excitation coil and the permanent magnet simultaneously as claimed in claim 1, wherein four first threaded holes are annularly and equally spaced on the right side of the front end cover (5), four second threaded holes are annularly and equally spaced on the left side of the rear end cover (19), the same connecting bolt (10) is threaded in the first threaded holes and the corresponding second threaded holes, and the front end cover (5) and the rear end cover (19) are screwed together by the four connecting bolts (10).

8. The variable speed generator using both field coils and permanent magnets according to claim 1, wherein the first rotor claw pole (11), the ring-shaped permanent magnet (12), the bobbin (13), the rotor claw pole enameled wire winding (14), and the second rotor claw pole (15) constitute a rotor structure, and the rotor structure and the rotor shaft (9) are integrated by a press.