CN217445103U - Rotor excitation generator with magnetic steel - Google Patents
Rotor excitation generator with magnetic steel Download PDFInfo
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- CN217445103U CN217445103U CN202220907224.0U CN202220907224U CN217445103U CN 217445103 U CN217445103 U CN 217445103U CN 202220907224 U CN202220907224 U CN 202220907224U CN 217445103 U CN217445103 U CN 217445103U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model relates to the technical field of generators, in particular to a rotor excitation generator with magnetic steel, which comprises a rotating shaft, a magnetic pole, a magnetic ring, two excitation coils and a generator shell, wherein the magnetic pole is sleeved on the rotating shaft; the magnetic ring wraps the magnetic pole, a plurality of magnetic pole holes are formed in the magnetic ring, and one part of the magnetic pole is positioned in the magnetic pole holes; and the magnetic poles are fixedly connected with a plurality of magnetic steels which are positioned in the magnetic pole holes, and the plurality of magnetic steels correspond to the plurality of magnetic pole holes one to one. The utility model discloses a take rotor excitation generator of magnet steel through the magnet steel of establishing ties on the magnetic pole of rotor, forms fixed magnetic field for the exciting current that excitation coil needs to provide reduces, and excitation coil's calorific capacity will reduce, increases the life of generator. Meanwhile, the output power of the generator in a low rotating speed state is improved by 30-35%.
Description
Technical Field
The utility model relates to a generator technical field especially relates to a take rotor excitation generator of magnet steel.
Background
At present, current excitation generator, because excitation coil when magnetizing the magnetic pole, excitation coil can produce the heat and make excitation coil generate heat, consequently can make excitation coil's energy consumption great, especially in high temperature environment, excitation coil generates heat the back temperature and can rise very fast, because the temperature of magnetic force coil work receives the restriction, unable input current through increasing excitation coil increases magnetic force coil's magnetic flux, consequently, the output of generator will also receive the restriction, and if excitation coil works in high temperature environment for a long time, can reduce generator output, and shorten the life of generator.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of above-mentioned technical problem.
For solving one of the above-mentioned technical problem, the utility model provides a take rotor excitation generator of magnet steel forms fixed magnetic field through the series connection magnet steel on the magnetic pole of rotor for the exciting current that excitation coil needs to provide reduces, and excitation coil's calorific capacity will reduce, increases the life of generator. Meanwhile, the output power of the generator in a low rotating speed state is improved by 30-35%.
The utility model provides a technical scheme that its technical problem adopted is: a rotor excitation generator with magnetic steel, comprising:
a rotating shaft;
the magnetic pole is sleeved on the rotating shaft and fixedly connected with the rotating shaft;
the magnetic pole is wrapped by the magnetic ring, a plurality of magnetic pole holes are formed in the magnetic ring and are uniformly distributed along the circumferential direction of the magnetic ring, the magnetic pole holes are through holes, and one part of the magnetic pole is positioned in the magnetic pole holes;
the two excitation coils are arranged along the axial direction of the rotating shaft and are arranged on the magnetic pole to magnetize the magnetic pole; an excitation winding is wound on the excitation coil;
the magnetic pole is fixedly connected with a plurality of magnetic steels, the magnetic steels are positioned in the magnetic pole holes, and the plurality of magnetic steels correspond to the plurality of magnetic pole holes one to one.
The utility model discloses a take rotor excitation generator of magnet steel through the magnet steel of establishing ties on the magnetic pole of rotor, forms fixed magnetic field, mixes with the adjustable magnetic field that produces behind the excitation coil circular telegram for the exciting current that excitation coil needs to provide reduces, and excitation coil's calorific capacity will reduce, thereby has reduced the consumption of the required electric energy of excitation, reduces rotor excitation coil's generating heat.
Further, the magnetic steel is a permanent magnet, and the magnetic steel is made of a rare earth neodymium iron boron material with high remanence, high coercivity, high magnetic energy product and high cost performance.
Furthermore, a plurality of the magnetic steels adopt plane magnetization, two planes of the magnetic steels arranged along the axial direction of the rotating shaft are respectively an N pole and an S pole, and the N poles of the magnetic steels are positioned at the same end.
Further, a plurality of dovetail grooves are formed in the magnetic poles, the number of the dovetail grooves is the same as that of the magnetic steels, the magnetic steels are arranged into dovetail shapes matched with the dovetail grooves, and the magnetic steels and the dovetail grooves are installed in a one-to-one correspondence mode. Through the arrangement of the dovetail groove, the magnetic steel is arranged in a dovetail shape to be matched with the dovetail groove, the magnetic steel is prevented from being thrown out due to the action of centrifugal force when the magnetic pole rotates, and the connection stability of the magnetic steel and the magnetic pole is improved
Furthermore, the magnetic steel and the magnetic poles are fixedly connected by adopting adhesive glue.
Further, the magnetic ring comprises a first magnetic ring and a second magnetic ring, the right end of the first magnetic ring is provided with a plurality of first magnetic pole notches, the left end of the second magnetic ring is provided with a plurality of second magnetic pole notches, and after the first magnetic ring and the second magnetic ring are coaxially and fixedly connected, the first magnetic pole notches and the second magnetic pole notches form the magnetic pole holes.
The magnetic pole, the magnetic ring and the excitation coil are wrapped by the generator shell, and two ends of the rotating shaft extend out of the generator shell.
Further, a stator is installed in the generator shell, the magnetic steel is covered by the stator, and a gap is formed between the stator and the magnetic steel.
Furthermore, the magnetic steel is obliquely arranged on the surface of the magnetic pole, and a straight line along the length direction of the magnetic steel is not parallel to the central axis of the rotating shaft.
The utility model has the advantages that the rotor excitation generator with the magnetic steel forms a fixed magnetic field by connecting the magnetic steel in series on the magnetic pole of the rotor, and is mixed with an adjustable magnetic field generated after the excitation coil is electrified, thereby controlling the size of a synthetic magnetic field and realizing voltage-stabilizing output by adjusting the size and the direction of the excitation current, because the fixed magnetic field of the magnetic steel is connected in series, the magnetic steel can increase the magnetic field intensity, because when the generator works in a high-temperature environment, a larger excitation current is needed, the excitation current provided by the excitation coil is limited, the magnetic steel arranged on the magnetic pole increases the magnetic field intensity, the excitation current needed by the excitation coil is reduced, the heating value of the excitation coil is reduced, thereby reducing the consumption of electric energy needed by excitation, reducing the heating of the rotor excitation coil and improving the output characteristic of the generator in a low-speed state, meanwhile, the output power of the generator in a high-temperature environment is improved.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of a rotor excitation generator with magnetic steel according to embodiment 1 of the present invention.
Fig. 2 is a schematic cross-sectional view of the rotor excitation generator with magnetic steel according to the present invention.
Fig. 3 is a schematic cross-sectional view of a magnetic pole and magnetic steel according to embodiment 1 of the present invention.
Fig. 4 is a schematic structural view of a rotor excitation generator with magnet steel according to embodiment 2 of the present invention.
In the figure: 1. a rotating shaft; 2. a magnetic pole; 3. a magnetic ring; 4. a pole hole; 5. a field coil; 6. an excitation winding; 7. magnetic steel; 8. a dovetail groove; 9. a first magnetic ring; 10. a second magnetic ring; 11. a generator housing; 12. and a stator.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, 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 otherwise specified. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
Example 1
As shown in fig. 1 to 3, which are the preferred embodiments of the present invention, a rotor excitation generator with magnetic steel comprises a rotating shaft 1, a magnetic pole 2, a magnetic ring 3, two excitation coils 5, and a generator housing 11, wherein the magnetic pole 2 is sleeved on the rotating shaft 1, and the magnetic pole 2 is fixedly connected with the rotating shaft 1; the magnetic pole 2 is wrapped by the magnetic ring 3, a plurality of magnetic pole holes 4 are formed in the magnetic ring 3, the plurality of magnetic pole holes 4 are uniformly distributed along the circumferential direction of the magnetic ring 3, the magnetic pole holes 4 are through holes, and one part of the magnetic pole 2 is positioned in the magnetic pole holes 4; the two excitation coils 5 are arranged along the axial direction of the rotating shaft 1, and the two excitation coils 5 are arranged on the magnetic pole 2 to magnetize the magnetic pole 2; an excitation winding 6 is wound on the excitation coil 5; a plurality of magnet steels 7 are fixedly connected to the magnetic pole 2, the magnet steels 7 are located in the magnetic pole holes 4, the magnet steels 7 correspond to the magnetic pole holes 4 one by one, the magnetic pole 2, the magnetic ring 3 and the magnet exciting coil 5 are wrapped by the generator shell 11, and two ends of the rotating shaft 1 extend out of the generator shell 11. The generator housing 11 is provided with a stator 12, the stator 12 covers the magnetic steel 7, and a gap is formed between the stator 12 and the magnetic steel 7.
The utility model discloses a take rotor excitation generator of magnet steel through magnet steel 7 establishes ties on magnetic pole 2 at the rotor, forms fixed magnetic field, mixes with the adjustable magnetic field that produces behind the 5 circular telegrams of excitation coil for the exciting current that excitation coil 5 needs to provide reduces, and excitation coil 5's calorific capacity will reduce, thereby has reduced the consumption of the required electric energy of excitation, reduces rotor excitation coil 5's generating heat.
Specifically, the magnetic steel 7 is a permanent magnet, and the magnetic steel 7 is made of a rare earth neodymium iron boron material with high remanence, high coercivity, high magnetic energy product and high cost performance.
A plurality of magnet steels 7 all adopt the plane to magnetize, and two planes that magnet steel 7 arranged along the axial of pivot 1 are the N utmost point and the S utmost point respectively, and a plurality of magnet steels 7' S the N utmost point is located same end.
The magnetic pole 2 is provided with a plurality of dovetail grooves 8, the number of the dovetail grooves 8 is the same as that of the magnetic steels 7, the magnetic steels 7 are arranged into dovetail shapes matched with the dovetail grooves 8, the magnetic steels 7 and the dovetail grooves 8 are installed in a one-to-one correspondence mode, and the magnetic steels 7 are fixedly connected with the magnetic pole 2 through adhesive glue. Through the arrangement of the dovetail groove 8, the magnetic steel 7 is arranged in a dovetail shape to be matched with the dovetail groove 8, the magnetic steel 7 is prevented from being thrown out due to the action of centrifugal force when the magnetic pole 2 rotates, and the stability of connection of the magnetic steel 7 and the magnetic pole 2 is improved.
The magnetic ring 3 comprises a first magnetic ring 9 and a second magnetic ring 10, a plurality of first magnetic pole notches are formed in the right end of the first magnetic ring 9, a plurality of second magnetic pole notches are formed in the left end of the second magnetic ring 10, and after the first magnetic ring 9 and the second magnetic ring 10 are coaxially and fixedly connected, the first magnetic pole notches and the second magnetic pole notches form magnetic pole holes 4.
The utility model has the advantages that the rotor excitation generator with the magnetic steel forms a fixed magnetic field by connecting the magnetic steel 7 in series on the magnetic pole 2 of the rotor, and is mixed with the adjustable magnetic field generated after the excitation coil 5 is electrified, thereby controlling the size of the synthesized magnetic field and realizing the voltage-stabilizing output by adjusting the size and the direction of the excitation current, because the fixed magnetic field of the magnetic steel 7 is connected in series, the magnetic steel 7 can increase the magnetic field intensity, because when the generator works in a high-temperature environment, a larger excitation current is needed, the excitation current provided by the excitation coil 5 is limited, the magnetic steel 7 arranged on the magnetic pole 2 increases the magnetic field intensity, the excitation current needed to be provided by the excitation coil 5 is reduced, the heating value of the excitation coil 5 is reduced, thereby reducing the consumption of the electric energy needed by the excitation and reducing the heating of the excitation coil 5 of the rotor, the output characteristic of the generator in a low-speed state is improved, and the output power of the generator in a high-temperature environment is improved.
Example 2
Referring to fig. 4, the main difference from embodiment 1 is that in embodiment 1, the straight line along the length direction of the magnetic steel 7 is parallel to the central axis of the rotating shaft 1, while in this embodiment, the magnetic steel 7 is disposed obliquely, in this embodiment, the straight line along the length direction of the magnetic steel 7 is not parallel to the central axis of the rotating shaft 1, and the oblique disposition of the magnetic steel 7 has the advantages of reducing the harmonic quantity and reducing the static torque.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and must be determined by the scope of the claims.
Claims (9)
1. The utility model provides a rotor excitation generator of electrified magnet steel which characterized in that: the method comprises the following steps:
a rotating shaft (1);
the magnetic pole (2) is sleeved on the rotating shaft (1), and the magnetic pole (2) is fixedly connected with the rotating shaft (1);
the magnetic pole (2) is wrapped by the magnetic ring (3), a plurality of magnetic pole holes (4) are formed in the magnetic ring (3), the magnetic pole holes (4) are uniformly distributed along the circumferential direction of the magnetic ring (3), the magnetic pole holes (4) are through holes, and one part of the magnetic pole (2) is located in the magnetic pole holes (4);
the two excitation coils (5) are arranged in an axial direction of the rotating shaft (1), and the two excitation coils (5) are arranged on the magnetic pole (2) to magnetize the magnetic pole (2); an excitation winding (6) is wound on the excitation coil (5);
a plurality of magnetic steels (7) are fixedly connected to the magnetic poles (2), the magnetic steels (7) are located in the magnetic pole holes (4), and the magnetic steels (7) are in one-to-one correspondence with the magnetic pole holes (4).
2. A rotor excited generator with magnetic steel as claimed in claim 1, wherein: the magnetic steel (7) is a permanent magnet, and the magnetic steel (7) is made of a rare earth neodymium iron boron material with high remanence, high coercivity, high magnetic energy product and high cost performance.
3. A rotor excited generator with magnetic steel as claimed in claim 1, wherein: it is a plurality of magnet steel (7) adopt the plane to magnetize, two planes that magnet steel (7) were arranged along the axial of pivot (1) are the N utmost point and the S utmost point respectively, and are a plurality of the N utmost point of magnet steel (7) is located same end.
4. A rotor excited generator with magnetic steel as claimed in claim 3, wherein: the magnetic pole is characterized in that a plurality of dovetail grooves (8) are formed in the magnetic pole (2), the number of the dovetail grooves (8) is equal to that of the magnetic steel (7), the magnetic steel (7) is arranged into a dovetail shape matched with the dovetail grooves (8), and the magnetic steel (7) and the dovetail grooves (8) are installed in a one-to-one correspondence mode.
5. A rotor excited generator with magnetic steel as claimed in claim 1, wherein: the magnetic steel (7) and the magnetic pole (2) are fixedly connected by bonding glue.
6. A rotor excited generator with magnetic steel as claimed in claim 1, wherein: the magnetic ring (3) comprises a first magnetic ring (9) and a second magnetic ring (10), a plurality of first magnetic pole notches are formed in the right end of the first magnetic ring (9), a plurality of second magnetic pole notches are formed in the left end of the second magnetic ring (10), and the first magnetic pole notches and the second magnetic pole notches form the magnetic pole holes (4) after the first magnetic ring (9) and the second magnetic ring (10) are coaxially and fixedly connected.
7. A rotor excited generator with magnetic steel as claimed in claim 1, wherein: the magnetic pole type magnetic field generator is characterized by further comprising a generator shell (11), the magnetic pole (2), the magnetic ring (3) and the excitation coil (5) are wrapped by the generator shell (11), and two ends of the rotating shaft (1) extend out of the generator shell (11).
8. A rotor excited generator with magnetic steel as claimed in claim 7, wherein: install stator (12) in generator housing (11), stator (12) will magnet steel (7) cover, there is the clearance between stator (12) and magnet steel (7).
9. A rotor excited generator with magnetic steel as claimed in claim 1, wherein: the magnetic steel (7) is obliquely arranged on the surface of the magnetic pole (2), and the straight line in the length direction of the magnetic steel (7) is not parallel to the central axis of the rotating shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220907224.0U CN217445103U (en) | 2022-04-19 | 2022-04-19 | Rotor excitation generator with magnetic steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220907224.0U CN217445103U (en) | 2022-04-19 | 2022-04-19 | Rotor excitation generator with magnetic steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217445103U true CN217445103U (en) | 2022-09-16 |
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ID=83218298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220907224.0U Active CN217445103U (en) | 2022-04-19 | 2022-04-19 | Rotor excitation generator with magnetic steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217445103U (en) |
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2022
- 2022-04-19 CN CN202220907224.0U patent/CN217445103U/en active Active
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