CN214154180U - Permanent magnet four-pole three-phase synchronous generator rotor - Google Patents

Abstract

The utility model discloses a permanent magnetism quadrupole three-phase synchronous generator rotor, include: the rotor comprises a rotor core, a rotor core and a rotor core, wherein the middle part of the rotor core is provided with a through hole along the axial direction of the rotor core, the rotor core is provided with a plurality of permanent magnet caulking grooves along the axial direction of the rotor core, and the permanent magnet caulking grooves are annularly distributed on the outer peripheral side of the through hole and comprise a first permanent magnet caulking groove and a second permanent magnet caulking groove which are arranged in parallel; the rotor shaft is arranged in the through hole in a penetrating way; the first permanent magnets are embedded in the first permanent magnet embedding grooves in a one-to-one correspondence manner; a plurality of second permanent magnets are embedded in the second permanent magnet embedding grooves in a one-to-one correspondence manner; two ends of the rotor core are respectively detachably connected with an end cover, and the middle part of the end cover is provided with a through hole matched with the rotor shaft; the utility model discloses a permanent magnet arrangement has further reduced the distortion rate of generator sine wave form, increases the magnetic energy product and utilizes 30%, has improved the magnetic flux density in the middle of the rotor magnetic pole, improves generating efficiency and power by a wide margin, has improved magnet installation effectiveness.

Description

Permanent magnet four-pole three-phase synchronous generator rotor

Technical Field

The utility model relates to a permanent magnet generator technical field, more specifically the utility model relates to a permanent magnetism quadrupole three-phase synchronous generator rotor that says so.

Background

The permanent magnet generator has the advantages of small volume, low loss, high efficiency and the like, and the research on the permanent magnet generator is very necessary nowadays when the energy conservation and the environmental protection are increasingly emphasized. Permanent magnet motors have been widely used in various fields such as household appliances, medical instruments, automobiles, aviation, national defense and the like with the continuous improvement and perfection of the performance of permanent magnet materials.

Among the permanent magnet generators, the rare earth permanent magnet generator has many advantages of small volume, light weight, large power, high efficiency, low temperature rise and the like, and is used in many power generation occasions. The rare earth permanent magnet material has excellent magnetic performance, and can be used for establishing a strong permanent magnetic field without external energy after being magnetized, so that the rare earth permanent magnet motor manufactured by replacing the electric excitation field of the traditional motor has high efficiency, simple structure, reliable operation, small volume and light weight, can achieve the high performance which cannot be achieved by the traditional electric excitation motor, and can be manufactured into special motors which can meet the specific operation requirements, such as elevator traction motors, special motors for automobiles and the like. The rare earth permanent magnet motor has a wide application range, and almost extends to various fields of aviation, aerospace, national defense, equipment manufacturing, industrial and agricultural production and daily life. The permanent magnet synchronous motor comprises a permanent magnet synchronous motor, a permanent magnet generator, a direct current motor, a brushless direct current motor, an alternating current permanent magnet servo motor, a permanent magnet linear motor, a special permanent magnet motor and a related control system, and almost covers the whole motor industry.

However, due to the high cost and the unreasonable design of the rare earth materials, the rare earth materials are wasted, and the cost of the permanent magnet generator is increased.

Therefore, the technical problem to be solved by those skilled in the art is how to provide a permanent magnet quadrupole three-phase synchronous generator rotor which reduces the amount of rare earth and improves the flux density in the middle of the rotor magnetic pole.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the above-mentioned technical problem among the prior art to a certain extent, provide a permanent magnetism quadrupole three-phase synchronous generator rotor.

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

a permanent magnet four-pole three-phase synchronous generator rotor comprising:

the rotor comprises a rotor core, a first permanent magnet embedded groove and a second permanent magnet embedded groove, wherein the middle part of the rotor core is provided with a through hole along the axial direction of the rotor core, the rotor core is provided with a plurality of permanent magnet embedded grooves along the axial direction of the rotor core, and the permanent magnet embedded grooves are annularly distributed on the outer peripheral side of the through hole and comprise the first permanent magnet embedded groove and the second permanent magnet embedded groove which are arranged in parallel;

the rotor shaft is arranged in the through hole in a penetrating manner;

the first permanent magnets are embedded in the first permanent magnet embedding grooves in a one-to-one correspondence manner;

a plurality of second permanent magnets are embedded in the second permanent magnet embedding grooves in a one-to-one correspondence manner;

the end covers are detachably connected to two ends of the rotor core respectively, and a through hole matched with the rotor shaft is formed in the middle of each end cover.

Further, the width of the first permanent magnet caulking groove positioned on the outer side is smaller than that of the second permanent magnet caulking groove positioned on the inner side.

Furthermore, a grid is arranged in the first permanent magnet caulking groove and the second permanent magnet caulking groove to divide the first permanent magnet caulking groove and the second permanent magnet caulking groove into two cavities with the same size.

Further, the rotor core is formed by stamping and overlapping silicon steel sheets or steel strips.

Further, the first permanent magnet has a cross-sectional dimension of 27.25mm × 7.8 mm.

Further, the cross-sectional dimension of the second permanent magnet is 45.25mm × 10.3 mm.

Further, the rotor core is cylindrical, and the outer diameter of the cross section of the rotor core is 163.4 mm.

Further, the end cap is made of a non-magnetic material.

Furthermore, the first permanent magnet and the second permanent magnet are made of rare earth neodymium iron boron magnetic steel and have the mark of 45 SH.

According to the technical scheme, compare with prior art, the utility model discloses a permanent magnetism quadrupole three-phase synchronous generator rotor, the permanent magnet arrangement of design has further reduced the distortion rate of generator sine wave form, utilizes for prior art magnetic energy product to increase 30%, has improved the magnetic flux density in the middle of the rotor magnetic pole, improves generating efficiency and power by a wide margin, has improved magnet installation effectiveness.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is an assembly view of a rotor core, a first permanent magnet, a second permanent magnet and a gland in the present invention;

FIG. 2 is a cross-sectional view of the present invention;

fig. 3 is a top view of the present invention.

Wherein:

1-a rotor core; 11-a through hole; 12-a first permanent magnet caulking groove; 13-a second permanent magnet caulking groove; 2-a rotor shaft; 3-a first permanent magnet; 4-a second permanent magnet; 5-end cover; 51-through holes.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The embodiment of the utility model discloses permanent magnetism quadrupole three-phase synchronous generator rotor, include: the rotor comprises a rotor core 1, a rotor shaft 2, a first permanent magnet 3, a second permanent magnet 4 and an end cover 5;

the rotor core 1 is cylindrical and is formed by stamping and superposing silicon steel sheets or steel strips, and the outer diameter of the cross section of the rotor core is 163.4 mm; the middle part of the rotor core 1 is provided with a through hole 11 along the axial direction, the rotor core 1 is provided with a plurality of permanent magnet caulking grooves along the axial direction, and the permanent magnet caulking grooves are annularly distributed on the outer peripheral side of the through hole 11 and comprise a first permanent magnet caulking groove 12 and a second permanent magnet caulking groove 13 which are arranged in parallel; the rotor shaft 2 is arranged in the through hole 11 in a penetrating mode;

the first permanent magnets 3 are embedded in the first permanent magnet embedding grooves 12 in a one-to-one correspondence manner;

a plurality of second permanent magnets 4 are embedded in the second permanent magnet embedding grooves 13 in a one-to-one correspondence manner;

the two ends of the rotor core 1 are detachably connected with end covers 5 respectively, the end covers 5 are made of non-magnetic materials and used for plugging the magnets in the permanent magnet caulking grooves at the two ends, and the middle parts of the end covers 5 are provided with through holes 51 matched with the rotor shaft.

In a specific embodiment, the width of the first permanent magnet insertion slot 12 located at the outer side is smaller than the width of the second permanent magnet insertion slot 13 located at the inner side.

In a specific embodiment, the first permanent magnet insertion slot 12 and the second permanent magnet insertion slot 13 are provided with a block to divide them into two cavities with the same size.

In a specific embodiment, the first permanent magnet 3 and the second permanent magnet 4 are made of rare earth neodymium iron boron magnetic steel with the trade mark of 45SH, and the cross-sectional dimension of the first permanent magnet 3 is 27.25mm × 7.8 mm; the second permanent magnet 4 has a cross-sectional dimension of 45.25mm × 10.3 mm.

The utility model discloses the rotor adopts as shown in figure 3 permanent magnet arrangement, has improved magnet installation effectiveness, has reduced the distortion rate of generator sine waveform, increases the magnetic energy product and utilizes 30%, has improved the magnetic flux density in the middle of the rotor magnetic pole, improves generating efficiency and power by a wide margin, and the experiment proves that the magnet utilization ratio has improved 30%, the cost is reduced.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. A permanent magnet four-pole three-phase synchronous generator rotor, comprising:

the rotor comprises a rotor core (1), wherein a through hole (11) is formed in the middle of the rotor core (1) along the axial direction of the rotor core, a plurality of permanent magnet caulking grooves are formed in the rotor core (1) along the axial direction of the rotor core, are annularly distributed on the outer peripheral side of the through hole (11), and comprise a first permanent magnet caulking groove (12) and a second permanent magnet caulking groove (13) which are arranged in parallel;

the rotor shaft (2), the said rotor shaft (2) is worn and set up in the said through hole (11);

the first permanent magnets (3) are arranged in the first permanent magnet caulking grooves (12) in a one-to-one corresponding mode;

the second permanent magnets (4) are multiple and are embedded in the second permanent magnet embedding grooves (13) in a one-to-one correspondence manner;

the rotor comprises an end cover (5), wherein the two ends of the rotor core (1) are respectively detachably connected with the end cover (5), and a through hole (51) matched with the rotor shaft is formed in the middle of the end cover (5).

2. A permanent magnet quadrupole three phase synchronous generator rotor according to claim 1, characterized in that the width of the first permanent magnet caulking groove (12) on the outside is smaller than the width of the second permanent magnet caulking groove (13) on the inside.

3. A rotor according to claim 2, characterised in that said first (12) and second (13) permanent magnet slots are provided with a grid dividing them into two cavities of equal size.

4. A permanent magnet quadrupole three phase synchronous generator rotor according to claim 1, wherein the rotor core (1) is stamped and stacked from silicon steel sheets or strips.

5. A permanent magnet four pole three phase synchronous generator rotor according to claim 1, characterized in that the cross sectional dimensions of the first permanent magnets (3) are 27.25mm x 7.8 mm.

6. A permanent magnet four pole three phase synchronous generator rotor according to claim 1, characterized in that the cross sectional dimensions of the second permanent magnets (4) are 45.25mm x 10.3 mm.

7. A permanent magnet quadrupole three phase synchronous generator rotor according to claim 1, characterized in that the rotor core (1) is cylindrical with a cross-sectional outer diameter of 163.4 mm.

8. A permanent magnet quadrupole three phase synchronous generator rotor according to claim 1, wherein the end caps (5) are made of a non-magnetic conducting material.

9. A rotor of a permanent magnet quadrupole three-phase synchronous generator according to claim 1, wherein the first permanent magnet (3) and the second permanent magnet (4) are made of rare earth neodymium iron boron magnetic steel with a mark number of 45 SH.

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