CN116566087B - Interelectrode asymmetric permanent magnet generator for weakening harmonic magnetic field and stabilized voltage power generation system - Google Patents
Interelectrode asymmetric permanent magnet generator for weakening harmonic magnetic field and stabilized voltage power generation system Download PDFInfo
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- CN116566087B CN116566087B CN202310545245.1A CN202310545245A CN116566087B CN 116566087 B CN116566087 B CN 116566087B CN 202310545245 A CN202310545245 A CN 202310545245A CN 116566087 B CN116566087 B CN 116566087B
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- 238000010248 power generation Methods 0.000 title claims abstract description 9
- 230000003313 weakening effect Effects 0.000 title claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 230000004888 barrier function Effects 0.000 claims description 47
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The invention provides an interelectrode asymmetric permanent magnet generator and a stabilized voltage power generation system for weakening a harmonic magnetic field, and belongs to the technical field of automobile motor electric appliances. The invention provides a setting mode of pole separation offset of an outer magnetic steel set, compared with a mode of slotting an outer circle of a rotor core, the invention can reduce the content of induced potential harmonic waves, improve the stability of output voltage of a generator, solve the problem of large motor loss caused by change of air gap magnetic resistance and improve the efficiency of the generator.
Description
Technical Field
The invention provides an interelectrode asymmetric permanent magnet generator and a stabilized voltage power generation system for weakening a harmonic magnetic field, and belongs to the technical field of automobile motor electric appliances.
Background
Some permanent magnet generators have been proposed, such as the prior art, the issued chinese patent: magnetic pole punching sheet and permanent magnet generator rotor core adopting same, and application number is that: 201310467230.4A rotor structure with staggered and offset magnetic pole symmetry axes of adjacent iron core sections is disclosed, wherein the rotor core of a permanent magnet generator is segmented in the axial direction, so that the tooth harmonic magnetic field of the permanent magnet motor is improved, the torque pulsation is reduced, and the additional loss is reduced. The issued chinese patent: high-efficiency energy-saving rare earth permanent magnet generator with application number: 201921299302.8A generator rotor structure combining radial magnetic steel and tangential magnetic steel is disclosed, tangential permanent magnetic steel is arranged in a magnetic yoke along the diameter direction of the rotor, radial permanent magnetic steel is arranged between two adjacent tangential permanent magnetic steel according to a straight shape, and rare earth permanent magnetic steel as much as possible improves the air gap density, or the volume of the rotor is reduced, the consumption of the permanent magnetic steel is reduced, the cost is reduced, and the generator adaptability and application occasions are improved under the condition that the air gap density is fixed. The issued chinese patent: permanent magnet generator rotor structure, application number: 202123437233.2A permanent magnet rotor structure similar to a triangle is disclosed, wherein a linear permanent magnet steel is arranged at the outer side of a V-shaped permanent magnet steel, heat insulation and heat dissipation gaps are arranged at two ends of a permanent magnet steel groove, so that the motor efficiency and the operation stability are improved, and the motor performance is ensured. Most permanent magnet motors are symmetrically arranged, but for the automobile generators commonly used for unidirectional rotation power generation, the arrangement of symmetrical permanent magnet steel is not beneficial to the reduction of the magnetic density waveform distortion rate of an air gap of the motor, and meanwhile, the motor efficiency is also adversely affected. The permanent magnet motor structure with staggered rotor sections increases the motor processing difficulty.
Disclosure of Invention
The invention aims to solve the technical problems that: the defects of the prior art are overcome, and the rotor core is simple in processing technology and low in production cost; the interelectrode asymmetric permanent magnet generator and the stabilized voltage power generation system which have long service life and reduced failure rate and weaken harmonic magnetic fields; the inner permanent magnet group in the rotor structure can better play a magnetic circuit sealing effect by combining the magnetism isolating grooves, the offset inner and outer double-layer permanent magnet groups can gather the magnetic field of the inner permanent magnet group, cogging torque is reduced, the higher harmonic content of air gap flux density is weakened, the air gap flux density tends to be distributed in a sine way, and the stability and efficiency of the output voltage of the generator are improved.
The invention adopts the technical proposal for solving the technical problems that: an interelectrode asymmetric permanent magnet generator for weakening harmonic magnetic field comprises a casing, a stator, a rotating shaft, a rotor core, an inner permanent magnet pole unit, an intermediate permanent magnet pole unit and an outer permanent magnet pole unit, and is characterized in that:
an even number of permanent magnetic pole groups are uniformly distributed along the circumferential direction of the rotor core, wherein the permanent magnetic pole groups comprise an inner permanent magnetic pole unit, a middle permanent magnetic pole unit and an outer permanent magnetic pole unit;
the two adjacent permanent magnetic pole groups are asymmetric, wherein the inner permanent magnetic pole units of the adjacent permanent magnetic pole groups have the same structure, the middle permanent magnetic pole units of the adjacent permanent magnetic pole groups have different structures, and the outer permanent magnetic pole units of the adjacent permanent magnetic pole groups have different structures;
the inner permanent magnetic pole unit is close to the inner circle of the rotor core, the outer permanent magnetic pole unit is close to the outer circle of the rotor core, the middle permanent magnetic pole unit is arranged between the inner permanent magnetic pole unit and the outer permanent magnetic pole unit, and the arc length between the outer end of the left side of the inner permanent magnetic pole unit and the outer end of the left side of the middle permanent magnetic pole unit is smaller than the corresponding arc length of the middle permanent magnetic pole unit;
the inner permanent magnetic pole unit is of an asymmetric structure and comprises a bar-shaped magnetic barrier, a linear permanent magnet and a semicircular magnetic barrier, wherein the linear permanent magnet is positioned at one side of the bar-shaped magnetic barrier, the bar-shaped magnetic barrier is tangentially distributed along the circumference of a rotor iron core along the diameter direction of the rotor iron core, the arc concave surface of the semicircular magnetic barrier faces the linear permanent magnet, one end of the bar-shaped magnetic barrier extends towards the excircle of the rotor iron core, the other end of the bar-shaped magnetic barrier is communicated with the linear permanent magnet, the short side of the linear permanent magnet far away from the bar-shaped magnetic barrier coincides with the central line of a magnetic pole where the linear permanent magnet is positioned, the length of the linear side of the semicircular magnetic barrier is equal to the length of the short side of the linear permanent magnet, and the semicircular magnetic barrier is communicated with the linear permanent magnet;
the middle permanent magnetic pole unit is of a symmetrical structure, the middle permanent magnetic pole unit is arranged on one side, far away from the center of the rotor core, of the semicircular magnetic barrier, the middle permanent magnetic pole unit is not communicated with the semicircular magnetic barrier, the outer side of the middle permanent magnetic pole unit extends to the outer circle of the rotor core, the symmetrical axis of the middle permanent magnetic pole unit deviates clockwise along the rotor core relative to the central line of the magnetic pole where the middle permanent magnetic pole unit is located, and the symmetrical axis of the middle permanent magnetic pole unit and the central line of the magnetic pole where the middle permanent magnetic pole unit is located are intersected at the center of the rotor core;
the outer permanent magnetic pole units are of symmetrical structures, and the symmetrical axes of the outer permanent magnetic pole units and the symmetrical axes of the middle permanent magnetic pole units are overlapped;
the magnetic steel materials in the straight permanent magnet and the middle permanent magnetic pole unit are neodymium iron boron, and the magnetic steel materials in the outer permanent magnetic pole unit are ferrite.
The shape of the middle permanent magnetic pole unit can be V-shaped or U-shaped with an opening facing the outer circle of the rotor core, the shape of the outer permanent magnetic pole unit can be a straight shape, V-shaped or arc shape, and the middle permanent magnetic pole unit and the outer circle of the rotor core surround the outer permanent magnetic pole unit corresponding to the middle permanent magnetic pole unit.
The non-communication distance between the outer end of the strip-shaped magnetic barrier and the outer circle of the rotor core, the non-communication distance between the middle permanent magnetic pole unit and the semicircular magnetic barrier are 1.5mm, and the non-communication distance between the outer side of the middle permanent magnetic pole unit and the outer circle of the rotor core is 1.5mm.
The polarities of the inner permanent magnetic pole units facing the outer circle of the rotor core, the polarities of the middle permanent magnetic pole units facing the outer circle of the rotor core and the polarities of the outer permanent magnetic pole units facing the outer circle of the rotor core are the same under the same permanent magnetic pole group, and the polarities of the inner permanent magnetic pole units facing the outer circle of the rotor core of the adjacent permanent magnetic pole groups are opposite.
The included angle between the symmetry axis of the middle permanent magnetic pole unit and the magnetic pole center line corresponding to the middle permanent magnetic pole unit is alpha, 0< alpha <22.5 degrees.
The included angle between the strip-shaped magnetic barrier groove and the straight-shaped permanent magnet positioned at one side of the strip-shaped magnetic barrier is larger than 90 degrees.
The utility model provides a steady voltage power generation system, includes generator and steady voltage controller, its characterized in that: the generator is the interelectrode asymmetric permanent magnet generator which weakens the harmonic magnetic field.
Compared with the prior art, the invention has the following technical effects:
(1) The adoption of the interelectrode asymmetric structure enables the air gap flux density to be more close to sinusoidal distribution, increases the stability of the output voltage of the generator and improves the efficiency of the generator;
(2) Compared with a rotor with full magnetic pole offset, the generator disclosed by the invention has the advantages that the mechanical strength is improved, the failure rate of the motor is reduced, and the service life of the motor is prolonged;
(3) The two layers of permanent magnet steel on the outer sides of the magnetic poles are arranged to be offset, so that cogging torque is reduced, slotting of the outer circle of the rotor is avoided, the processing technology of a rotor punching sheet is simple, the production cost of the generator rotor is reduced, and the problem of high loss caused by change of air gap magnetic resistance can be solved;
(4) The inner permanent magnet group is combined with the magnetism isolating groove, so that the magnetic circuit sealing effect can be better exerted, the air gap magnetic density is enhanced, and the output power of the generator is improved;
(5) The bar-shaped magnetic barrier can weaken the armature reaction of the generator.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the present invention;
fig. 3 is a schematic diagram of a third embodiment of the present invention.
In the figure: 1. the rotor iron core, 2, the inner permanent magnetic pole unit, 3, the middle permanent magnetic pole unit, 4, the outer permanent magnetic pole unit.
Detailed Description
Embodiments of the present invention are further described below with reference to the accompanying drawings.
Examples
An interelectrode asymmetric permanent magnet generator for weakening harmonic magnetic field, as shown in fig. 1, comprises a casing, a stator, a rotating shaft, a rotor core, an inner permanent magnet pole unit, an intermediate permanent magnet pole unit and an outer permanent magnet pole unit, and is characterized in that:
an even number of permanent magnetic pole groups are uniformly distributed along the circumferential direction of the rotor core, wherein the permanent magnetic pole groups comprise an inner permanent magnetic pole unit 2, an intermediate permanent magnetic pole unit 3 and an outer permanent magnetic pole unit 4;
the two adjacent permanent magnetic pole groups are asymmetric, wherein the inner permanent magnetic pole units 2 of the adjacent permanent magnetic pole groups have the same structure, the middle permanent magnetic pole units 3 of the adjacent permanent magnetic pole groups have different structures, and the outer permanent magnetic pole units 4 of the adjacent permanent magnetic pole groups have different structures;
the inner permanent magnetic pole unit 2 is close to the inner circle of the rotor core, the outer permanent magnetic pole unit 4 is close to the outer circle of the rotor core, the middle permanent magnetic pole unit 3 is arranged between the inner permanent magnetic pole unit 2 and the outer permanent magnetic pole unit 4, and the arc length between the outer end of the left side of the inner permanent magnetic pole unit 2 and the outer end of the left side of the middle permanent magnetic pole unit 3 is smaller than the corresponding arc length of the middle permanent magnetic pole unit 3;
the inner permanent magnet pole unit 2 is of an asymmetric structure, the inner permanent magnet pole unit 2 comprises a bar-shaped magnetic barrier, a linear permanent magnet and a semicircular magnetic barrier, wherein the linear permanent magnet is positioned at one side of the bar-shaped magnetic barrier, the bar-shaped magnetic barrier is distributed along the circumferential tangential direction of the rotor core along the diameter direction of the rotor core, the arc concave surface of the semicircular magnetic barrier faces the linear permanent magnet, one end of the bar-shaped magnetic barrier extends towards the excircle of the rotor core, the other end of the bar-shaped magnetic barrier is communicated with the linear permanent magnet, the short side of the linear permanent magnet far away from the bar-shaped magnetic barrier coincides with the central line of a magnetic pole where the linear permanent magnet is positioned, the length of the linear side of the semicircular magnetic barrier is equal to the length of the short side of the linear permanent magnet, and the semicircular magnetic barrier is communicated with the linear permanent magnet;
the middle permanent magnetic pole unit 3 is of a symmetrical structure, the middle permanent magnetic pole unit 3 is arranged on one side, far away from the center of the rotor core, of the semicircular magnetic barrier, the middle permanent magnetic pole unit 3 is not communicated with the semicircular magnetic barrier, the outer side of the middle permanent magnetic pole unit 3 extends to the outer circle of the rotor core, the symmetrical axis of the middle permanent magnetic pole unit 3 deviates in the clockwise direction of the rotor core relative to the central line of the magnetic pole where the middle permanent magnetic pole unit 3 is located, and the symmetrical axis of the middle permanent magnetic pole unit 3 and the central line of the magnetic pole where the middle permanent magnetic pole unit 3 is located intersect at the center of the rotor core;
the outer permanent magnetic pole unit 4 is of a symmetrical structure, and the symmetrical axis of the outer permanent magnetic pole unit 4 is overlapped with the symmetrical axis of the middle permanent magnetic pole unit 3;
the magnetic steel materials in the straight permanent magnet and the middle permanent magnetic pole unit are neodymium iron boron, and the magnetic steel materials in the outer permanent magnetic pole unit 4 are ferrite.
The shape of the middle permanent magnetic pole unit can be V-shaped or U-shaped with an opening facing the outer circle of the rotor core, the shape of the outer permanent magnetic pole unit can be a straight shape, V-shaped or arc shape, and the outer permanent magnetic pole unit corresponding to the middle permanent magnetic pole unit is surrounded by the middle permanent magnetic pole unit and the outer circle of the rotor punching sheet.
The polarities of the inner permanent magnetic pole units facing the outer circle of the rotor core, the polarities of the middle permanent magnetic pole units facing the outer circle of the rotor core and the polarities of the outer permanent magnetic pole units facing the outer circle of the rotor core are the same under the same permanent magnetic pole group, and the polarities of the inner permanent magnetic pole units facing the outer circle of the rotor core of the adjacent permanent magnetic pole groups are opposite.
The included angle between the symmetry axis of the middle permanent magnetic pole unit and the magnetic pole center line corresponding to the middle permanent magnetic pole unit is alpha, 0< alpha <22.5 degrees.
The included angle between the strip-shaped magnetic barrier and the in-line permanent magnet positioned at one side of the strip-shaped magnetic barrier is larger than 90 degrees.
The utility model provides a steady voltage power generation system, includes generator and steady voltage controller, its characterized in that: the generator is the interelectrode asymmetric permanent magnet generator which weakens the harmonic magnetic field.
Examples
The difference from the first embodiment is that, as shown in fig. 2, the middle permanent magnetic pole unit of one magnetic pole group is U-shaped with an opening facing the outer circle of the rotor core, the outer permanent magnetic pole unit is arc-shaped with an opening facing the outer circle of the rotor core, the middle permanent magnetic pole unit of the adjacent magnetic pole group is V-shaped with an opening facing the outer circle of the rotor core, and the outer permanent magnetic pole unit is straight-shaped with an opening facing the outer circle of the rotor core.
Examples
The difference from the first embodiment is that, as shown in fig. 3, the middle permanent magnetic pole unit of one magnetic pole group is U-shaped with an opening facing the outer circle of the rotor core, the outer permanent magnetic pole unit is V-shaped with an opening facing the outer circle of the rotor core, the middle permanent magnetic pole unit of the adjacent magnetic pole group is V-shaped with an opening facing the outer circle of the rotor core, and the outer permanent magnetic pole unit is in a straight shape with an opening facing the outer circle of the rotor core.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. An interelectrode asymmetric permanent magnet generator for weakening harmonic magnetic fields comprises a casing, a stator, a rotating shaft, a rotor core (1), an inner permanent magnet pole unit (2), an intermediate permanent magnet pole unit (3) and an outer permanent magnet pole unit (4), and is characterized in that:
an even number of permanent magnetic pole groups are uniformly distributed along the circumferential direction of the rotor core, wherein the permanent magnetic pole groups comprise an inner permanent magnetic pole unit (2), an intermediate permanent magnetic pole unit (3) and an outer permanent magnetic pole unit (4);
the two adjacent permanent magnetic pole groups are asymmetric, wherein the inner permanent magnetic pole units (2) of the adjacent permanent magnetic pole groups have the same structure, the middle permanent magnetic pole units (3) of the adjacent permanent magnetic pole groups have different structures, and the outer permanent magnetic pole units (4) of the adjacent permanent magnetic pole groups have different structures;
the inner permanent magnetic pole unit (2) is close to the inner circle of the rotor core, the outer permanent magnetic pole unit (4) is close to the outer circle of the rotor core, the middle permanent magnetic pole unit (3) is arranged between the inner permanent magnetic pole unit (2) and the outer permanent magnetic pole unit (4), and the arc length between the outer end of the left side of the inner permanent magnetic pole unit (2) and the outer end of the left side of the middle permanent magnetic pole unit (3) is smaller than the corresponding arc length of the middle permanent magnetic pole unit (3);
the inner permanent magnetic pole unit (2) is of an asymmetric structure, the inner permanent magnetic pole unit (2) comprises a bar-shaped magnetic barrier, a linear permanent magnet and a semicircular magnetic barrier, wherein the linear permanent magnet is positioned at one side of the bar-shaped magnetic barrier, the bar-shaped magnetic barrier is distributed along the diameter direction of a rotor iron core tangentially, the arc concave surface of the semicircular magnetic barrier faces the linear permanent magnet, one end of the bar-shaped magnetic barrier extends towards the excircle of the rotor iron core, the other end of the bar-shaped magnetic barrier is communicated with the linear permanent magnet, the short side of the linear permanent magnet far away from the bar-shaped magnetic barrier coincides with the central line of a magnetic pole where the linear permanent magnet is positioned, the length of the linear side of the semicircular magnetic barrier is equal to the length of the short side of the linear permanent magnet, and the semicircular magnetic barrier is communicated with the linear permanent magnet;
the middle permanent magnetic pole unit (3) is of a symmetrical structure, the middle permanent magnetic pole unit (3) is arranged on one side, far away from the center of the rotor core, of the semicircular magnetic barrier, the middle permanent magnetic pole unit (3) is not communicated with the semicircular magnetic barrier, the outer side of the middle permanent magnetic pole unit (3) extends towards the outer circle of the rotor core, the symmetry axis of the middle permanent magnetic pole unit (3) deviates from the center line of the magnetic pole where the middle permanent magnetic pole unit (3) is located in the clockwise direction of the rotor core, and the symmetry axis of the middle permanent magnetic pole unit (3) and the center line of the magnetic pole where the middle permanent magnetic pole unit (3) is located are intersected at the center of the rotor core;
the outer permanent magnetic pole unit (4) is of a symmetrical structure, and the symmetrical axis of the outer permanent magnetic pole unit (4) is overlapped with the symmetrical axis of the middle permanent magnetic pole unit (3);
the magnetic steel materials in the straight permanent magnet and the middle permanent magnetic pole unit (3) are neodymium iron boron, and the magnetic steel materials in the outer permanent magnetic pole unit (4) are ferrite.
2. An inter-pole asymmetric permanent magnet generator for attenuating harmonic magnetic fields as claimed in claim 1, wherein: the middle permanent magnetic pole unit (3) is in a V shape and a U shape with an opening facing the outer circle of the rotor core, the outer permanent magnetic pole unit (4) is in a straight shape, a V shape or an arc shape, and the middle permanent magnetic pole unit (3) and the outer circle of the rotor core surround the outer permanent magnetic pole unit (4) corresponding to the middle permanent magnetic pole unit (3).
3. An inter-pole asymmetric permanent magnet generator for attenuating harmonic magnetic fields as claimed in claim 1, wherein: the non-communication distance between the outer end of the strip-shaped magnetic barrier and the outer circle of the rotor core, the non-communication distance between the middle permanent magnetic pole unit (3) and the semicircular magnetic barrier are 1.5mm, and the non-communication distance between the outer side of the middle permanent magnetic pole unit (3) and the outer circle of the rotor core is 1.5mm.
4. An inter-pole asymmetric permanent magnet generator for attenuating harmonic magnetic fields as claimed in claim 1, wherein: the polarities of the inner permanent magnetic pole units (2) facing the outer circle of the rotor core, the polarities of the middle permanent magnetic pole units (3) facing the outer circle of the rotor core and the polarities of the outer permanent magnetic pole units (4) facing the outer circle of the rotor core are the same, and the polarities of the inner permanent magnetic pole units (2) facing the outer circle of the rotor core of adjacent permanent magnetic pole groups are opposite.
5. An inter-pole asymmetric permanent magnet generator for attenuating harmonic magnetic fields as claimed in claim 1, wherein: the included angle between the symmetry axis of the middle permanent magnetic pole unit (3) and the magnetic pole center line corresponding to the middle permanent magnetic pole unit (3) is alpha, 0< alpha <22.5 degrees.
6. An inter-pole asymmetric permanent magnet generator for attenuating harmonic magnetic fields as claimed in claim 1, wherein: the included angle between the strip-shaped magnetic barrier groove and the straight-shaped permanent magnet positioned at one side of the strip-shaped magnetic barrier is larger than 90 degrees.
7. The utility model provides a steady voltage power generation system, includes generator and steady voltage controller, its characterized in that: the generator is an inter-pole asymmetric permanent magnet generator weakening a harmonic magnetic field as claimed in any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310545245.1A CN116566087B (en) | 2023-05-16 | 2023-05-16 | Interelectrode asymmetric permanent magnet generator for weakening harmonic magnetic field and stabilized voltage power generation system |
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| CN202310545245.1A CN116566087B (en) | 2023-05-16 | 2023-05-16 | Interelectrode asymmetric permanent magnet generator for weakening harmonic magnetic field and stabilized voltage power generation system |
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| CN116566087B true CN116566087B (en) | 2024-02-13 |
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