CN107070024B - Rotor permanent magnet type flux switch motor with flux control ability - Google Patents
Rotor permanent magnet type flux switch motor with flux control ability Download PDFInfo
- Publication number
- CN107070024B CN107070024B CN201710139519.1A CN201710139519A CN107070024B CN 107070024 B CN107070024 B CN 107070024B CN 201710139519 A CN201710139519 A CN 201710139519A CN 107070024 B CN107070024 B CN 107070024B
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- Prior art keywords
- rotor
- permanent magnet
- magnetic
- control ability
- adjustable
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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
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- 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
- H02K1/2746—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 arranged with the same polarity, e.g. consequent pole type
-
- 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
- H02K1/2786—Outer rotors
-
- 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
Abstract
The present invention discloses a kind of rotor permanent magnet type flux switch motor with flux control ability, including stator and rotor, and the stator and rotor are salient-pole structure, and has air gap between the two；The rotor includes rotor magnetic pole module (1), every magnetic patch (4), adjustable magnetic block (5) and axis (6)；The rotor magnetic pole module (1) includes two pieces of rotor tooths (2) and one piece of permanent magnet (3), the permanent magnet (3) is embedded between two pieces of rotor tooths (2), permanent magnet (3) cutting orientation magnetizing, and magnetizing direction is consistent；Insertion is every magnetic patch (4) between the adjacent rotor magnetic pole module (1).Rotor permanent magnet type flux switch motor with flux control ability of the invention has power density height, torque output capability strong, and the advantage that magnetic field is adjustable has effectively widened the working range of motor.
Description
Technical field
The present invention relates to a kind of brushless motor based on magnetic flux switching principle and flux control mechanism, more particularly to one kind
Rotor permanent magnet type flux switch motor with flux control ability, belongs to technical field of motor manufacture.
Background technique
Traditional stator permanent-magnet type flux switch motor permanent magnet and armature winding are placed in stator side, and rotor is only by iron core structure
At, structure simple, high mechanical strength, be suitble to high speed and environment more severe under conditions of.The motor has high torque (HT) (function
Rate) density, low-loss the advantages that, and single-phase permanent magnetic linkage is low with unloaded induced potential harmonic content, effectively torque pulsation inhibited.
However, in application fields such as wind-power electricity generation, New-energy electric vehicle, industrial drives, more electric aircraft/naval vessels, not only
It is required that motor has good torque-output characteristics, and speed adjustable range to motor and operation interval have higher requirement,
To meet the changeable operating condition of equipment.But the shortcomings that stator permanent magnetic type flux switch motor, is that permanent magnet dosage is larger,
Permanent magnet utilization rate is lower.Stator side permanent magnet and armature are around competition for space relationship is constituted, so that armature groove area reduces, centainly
The torque output capability of motor, and armature field and permanent magnetic field collective effect are influenced in degree, make the flux density in stator core
Supersaturation limits the overload capacity of motor.In addition, stator permanent magnetic type flux switch motor passes through permanent magnet excitation, excitation magnetic
Field is unadjustable, and then influences the speed adjustable range of motor.
In recent years, the proposition of stator permanent magnetic type mixed excited magnetic pass switch motor solves traditional stator permanent-magnet type magnetic flux
The unadjustable problem of switch motor excitation field.But since stator side is tied existing for original armature winding and permanent magnet
On the basis of structure, excitation winding is added, so that armature winding or permanent magnet space greatly reduce, thus further turn of limiting motor
Square fan-out capability.
File CN104201852A proposes a kind of winding complementary type rotor permanent magnet flux switch motor, and permanent magnet is transplanted
It in rotor-side, is separated with armature winding, effectively increases the space utilization rate of rotor-side, it is empty to release stator side armature winding
Between, improve the torque density and power density of motor.Armature field is separated with permanent magnetic field, and it is full to alleviate stator teeth magnetic field
And degree, improve the overload capacity of motor.
But file CN104201852A propose a kind of winding complementary type rotor permanent magnet flux switch motor have it is as follows
Disadvantage: using single permanent magnet excitation, and permanent magnetic field is unadjustable, and then influences the weak-magnetic speed-regulating range of motor；If analogy is fixed
Sub- permanent-magnet type mixed excited magnetic pass switch motor is then needed that electric brush slip ring is added in rotor-side, is provided using composite excitation structure
DC excitation electric current, and structure is complicated for electric brush slip ring, and needs periodic maintenance.
Summary of the invention
Technical problem: the technical problem to be solved in the present invention is that in view of the deficiencies of the prior art, the invention proposes one
The rotor permanent magnet type magnetic flux with flux control ability high, high-efficient, that torque output capability is strong of kind torque (power) density is cut
Motor is changed, under the premise of not lead-in brush slip ring structure, permanent magnetic field adjusting is realized, has widened the weak-magnetic speed-regulating model of motor
It encloses and operation interval.
Technical solution: in order to solve the above technical problems, the present invention provides a kind of rotors with flux control ability forever
Magnetic-type flux switch motor, including stator and rotor, the stator and rotor are salient-pole structure, and have gas between the two
Gap；
The rotor includes rotor magnetic pole module, every magnetic patch, adjustable magnetic block and axis；The rotor magnetic pole module includes two pieces and turns
Sub- tooth and one piece of permanent magnet, the permanent magnet are embedded between two pieces of rotor tooths, permanent magnet cutting orientation magnetizing, and magnetizing direction is consistent；
Insertion is described to have adjustable magnetic block boss every magnetic patch bottom every magnetic patch between the adjacent rotor magnetic pole module,
The rotor magnetic pole module collectively forms annular rotor structure with every magnetic patch, and the ring-shaped rotor passes through the adjustable magnetic
Block boss is fixed on axis, and rectangle adjustable magnetic air gap is constituted between axis；The rectangle adjustable magnetic air gap is embedded in adjustable magnetic block；It is described
Adjustable magnetic block relative rotor magnetic pole module in adjustable magnetic air gap moves, and scope of activities is limited by the adjustable magnetic block boss.
Preferably, the stator includes that armature winding and stator core are constituted；The armature winding is set to stator iron
On electrocardio armature tooth, using concentratred winding structure.
Preferably, the stator core setting constitutes outer stator structure in rotor magnetic pole module-external, or setting is turning
The sub- default minor structure of magnetic pole module Inner Constitution.
Preferably, the stator core is straight groove structure or flume structure.
Preferably, the rotor tooth, adjustable magnetic block, stator core are permeability magnetic material.
Preferably, the permanent magnet is neodymium iron boron or SmCo or ferrite permanent-magnet materials.
The utility model has the advantages that compared with prior art, the beneficial effects of the present invention are:
1) the rotor permanent magnet type flux switch motor with flux control ability has conventional rotors permanent magnet flux switching electricity
The advantages that machine torque (power) density is high, torque overload ability is strong, high-efficient.
2) change in location for passing through adjustable magnetic block realizes that permanent magnetic field is adjusted, improves motor weak-magnetic speed-regulating range.
3) adjustable magnetic block is placed in adjustable magnetic air gap, does not constitute competition for space relationship, therefore not shadow with permanent magnet spatially
Ring torque (power) density of motor.
4) adjustable magnetic is realized by adjustable magnetic block, it is different from traditional excitation winding adjustable magnetic mode, electric brush slip ring structure is not needed, is mentioned
The reliability and stability of high motor operation.
5) when motor weak magnetic, adjustable magnetic magnetic circuit is in parallel with main magnetic circuit, effectively prevent during weakening permanent magnetic field, permanent magnet
Demagnetization.
6) every phase armature winding has complementary characteristic.Height in the permanent magnet flux linkage of two sets of coil group institute linkages of every phase winding
Subharmonic, especially even-order harmonic can offset each other, and optimize the sine of permanent magnet flux linkage, it is suppressed that unloaded induced potential
Harmonic content.
7) the rotor permanent magnet type flux switch motor with flux control ability of the invention, since complementary characteristic makes mutually
The derivative of magnetic field energy where two coil groups mended in main magnetic circuit and rotor relative position is positive and negative on the contrary, cancel out each other,
Effectively reduce the size of location torque, it is suppressed that output torque pulsation.
8) the rotor permanent magnet type flux switch motor with flux control ability of the invention, it is characterised in that the electricity
Machine can both do electric operation or do generator operation.
Detailed description of the invention
Fig. 1 is the rotor permanent magnet type flux switch motor structural schematic diagram that the present invention has flux control ability；
Fig. 2 a is that there are the present invention rotor permanent magnet type flux switch motor nominal operating conditions of flux control ability to be intended to；
Fig. 2 b is that there is the present invention rotor permanent magnet type flux switch motor weak magnetic field operation operating condition of flux control ability to be intended to；
Fig. 3 is the rotor permanent magnet type flux switch motor nominal situation and weak magnetic operating condition that the present invention has flux control ability
Under, the three-phase permanent magnetic linkage of institute's linkage in armature winding；
Fig. 4 is the rotor permanent magnet type flux switch motor nominal situation and weak magnetic operating condition that the present invention has flux control ability
Lower motor torque speed curve.
In figure: 1, rotor magnetic pole module, 2, rotor tooth, 3, permanent magnet, 4, every magnetic patch, 5, adjustable magnetic block, 6, axis, 7, adjustable magnetic block
Boss, 8, adjustable magnetic air gap, 9, armature winding, 10, stator core, 11, main magnetic circuit, 12, adjustable magnetic magnetic circuit.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
A kind of rotor permanent magnet type flux switch motor with flux control ability of the present invention, below with flux control
For the three-phase rotor permanent magnet type flux switch motor of ability, a specific embodiment of the invention is elaborated.
Rotor permanent magnet type flux switch motor provided by the invention with flux control ability, including stator and rotor,
The stator and rotor are salient-pole structure, and have air gap between the two；
The rotor includes rotor magnetic pole module 1, every magnetic patch 4, adjustable magnetic block 5 and axis 6；The rotor magnetic pole module 1 includes
Two pieces of rotor tooths 2 and one piece of permanent magnet 3, the permanent magnet 3 are embedded between two pieces of rotor tooths 2,3 cutting orientation magnetizing of permanent magnet, and are filled
Magnetic direction is consistent；Insertion is described to have adjustable magnetic block boss 7 every 4 bottom of magnetic patch every magnetic patch 4 between the adjacent rotor magnetic pole module 1,
The rotor magnetic pole module 1 collectively forms annular rotor structure with every magnetic patch 4, and the ring-shaped rotor passes through the tune
Magnetic patch boss 7 is fixed on axis 6, and rectangle adjustable magnetic air gap 8 is constituted between axis 6；The rectangle adjustable magnetic air gap 8 is embedded in adjustable magnetic
Block 5；The adjustable magnetic block 5 relative rotor magnetic pole module 1 in adjustable magnetic air gap 8 moves, and scope of activities is by the adjustable magnetic block boss 7
Limitation.
The stator includes that armature winding 9 and stator core 10 are constituted；The armature winding 9 is set to stator core 10
On armature tooth, using concentratred winding structure.
The setting of stator core 10 constitutes outer stator structure outside rotor magnetic pole module 1, or is arranged in rotor magnetic
The default minor structure of 1 Inner Constitution of pole module.
The stator core 10 is straight groove structure or flume structure.
The rotor tooth 2, adjustable magnetic block 5, stator core 10 are permeability magnetic material.
The permanent magnet 3 is neodymium iron boron or SmCo or ferrite permanent-magnet materials.
As shown in Figure 1, the present invention have flux control ability rotor permanent magnet type flux switch motor, including stator and turn
Son, the stator and rotor are salient-pole structure, and have air gap between the two；The rotor by rotor magnetic pole module 1, every magnetic
Block 4, adjustable magnetic block 5 and axis 6 are constituted.The rotor magnetic pole module 1 is made of two pieces of rotor tooths 2 and one piece of permanent magnet 3, the permanent magnetism
Body 3 is embedded between two pieces of rotor tooths 2,3 cutting orientation magnetizing of permanent magnet, and magnetizing direction is consistent.The adjacent rotor magnetic pole module 1 it
Between insertion every magnetic patch 4, it is described to have adjustable magnetic block boss 7 every 4 bottom of magnetic patch, it is characterised in that the rotor magnetic pole module 1 with every magnetic
Block 4 collectively forms annular rotor structure, and the ring-shaped rotor is fixed on axis 6 by the adjustable magnetic block boss 7, and with axis 6 it
Between constitute rectangle adjustable magnetic air gap 8.The rectangle adjustable magnetic air gap 8 is embedded in adjustable magnetic block 5.Adjustable magnetic block 5 can phase in adjustable magnetic air gap 8
Rotor magnetic pole module 1 is moved.Every piece of adjustable magnetic block 5 is connected by motor end end ring, constitutes whole adjustable magnetic component, easy to process
And realize adjustable magnetic control, the modulated magnetic patch boss 7 of the scope of activities of adjustable magnetic component limits.
The stator is made of armature winding 9 and stator core 10.The armature winding 9 is set to 10 electricity of stator core
On armature tooth, using concentratred winding structure.Armature coil 911 and armature coil 912,913,914 are empty in the A phase armature winding
Between position central angle differ 90o, 180o and 270o respectively；Armature coil 911 and 913 diametrically, linkage in armature coil
Permanent magnet flux linkage phase is identical, magnetic linkage variation it is with uniformity, similarly, armature coil 912 and 914 diametrically, in armature coil
The permanent magnet flux linkage variation of linkage is also with uniformity；The spatial position of armature coil 911 and 912 central angle differs 90 °, armature coil
Interior permanent magnet flux linkage phase phase difference 180o, magnetic linkage variation has complementarity, therefore forward series connection becomes first coil group, similarly,
The spatial position of armature coil 913 and 914 central angle is separated by 90 °, and magnetic linkage variation also has complementarity, therefore forward series connection becomes the
Two coil group；The first coil group and second coil group forward serial or parallel connection.It is similar, armature coil 921,922,
923 and 924 constitute B phase armature winding, and armature coil 931,932,933 and 934 constitutes C phase armature winding.
The rotor tooth 2, adjustable magnetic block 5, stator core 10 are permeability magnetic material.Permanent magnet 3 is neodymium iron boron, SmCo and iron
Oxysome permanent-magnet material.
Three-phase rotor permanent magnet type flux switch motor with flux control ability switches with conventional rotors permanent magnet flux
The advantages that motor torque (power) density is high, torque overload ability is strong, high-efficient.Every phase armature winding has complementary characteristic, supports
Disappeared the permanent magnet flux linkage higher hamonic wave especially even-order harmonics of two sets of coil group institute linkages in every phase winding, optimizes permanent magnet flux linkage
Sine, it is suppressed that the harmonic content of unloaded induced electromotive force.
By the change in location of the three-phase rotor permanent magnet type flux switch motor adjustable magnetic block with flux control ability, realize
Permanent magnetic field is adjusted, and improves motor weak-magnetic speed-regulating range.Adjustable magnetic block is placed in adjustable magnetic air gap, spatially not with permanent magnet structure
At competition for space relationship, therefore torque (power) density of motor is not influenced.The adjustable magnetic mode and traditional excitation winding adjustable magnetic side
Formula is different, does not need electric brush slip ring structure, improves the reliability and stability of motor operation.When motor weak magnetic, adjustable magnetic magnetic circuit
It is in parallel with main magnetic circuit, as shown in Fig. 2, effectivelying prevent during weakening permanent magnetic field, permanent magnet demagnetization.
Magnetic field energy position opposite with rotor where making two complementary coil groups due to complementary characteristic in main magnetic circuit
The derivative set is positive and negative on the contrary, cancel out each other, and effectively reduces the size of location torque, it is suppressed that output torque pulsation.
Rotor permanent magnet type flux switch motor with flux control ability has the following characteristics that when different operating conditions are run
1, pure permanent magnetism operating condition operation: motor generates excitation field by permanent magnet at this time, is adjusted by control armature supply
Output torque, power density and the speed adjusting performance of motor.
2, weak magnetic operating condition is run: being changed the relative position of adjustable magnetic block and rotor magnetic pole module, is constituted on main magnetic circuit in parallel
Branch realizes weak magnetism speed expansion so that main magnetic circuit magnetic flux reduces.Weak magnetic ability can be adjusted by the relative position of change adjustable magnetic block,
Expand the Constant-power speed range of motor, the range of operation for improving motor is as shown in Figure 4.
The above is only specific application examples of the invention, are not limited in any way to protection scope of the present invention.Except above-mentioned
Outside embodiment, the present invention can also have other embodiments.All technical solutions formed using equivalent substitution or equivalent transformation,
It falls within scope of the present invention.
Claims (6)
1. a kind of rotor permanent magnet type flux switch motor with flux control ability, including stator and rotor, the stator and
Rotor is salient-pole structure, and has air gap between the two；
The rotor includes rotor magnetic pole module (1), every magnetic patch (4), adjustable magnetic block (5) and axis (6)；The rotor magnetic pole module
It (1) include two pieces of rotor tooths (2) and one piece of permanent magnet (3), the permanent magnet (3) is embedded between two pieces of rotor tooths (2), permanent magnet
(3) cutting orientation magnetizing, and magnetizing direction is consistent；Insertion is described every magnetic every magnetic patch (4) between the adjacent rotor magnetic pole module (1)
Adjustable magnetic block boss (7) is arranged at block (4) bottom, which is characterized in that
The rotor magnetic pole module (1) collectively forms annular rotor structure with every magnetic patch (4), and the ring-shaped rotor passes through the tune
Magnetic patch boss (7) is fixed on axis (6), and constitutes rectangle adjustable magnetic air gap (8) between axis (6)；The rectangle adjustable magnetic air gap (8)
It is embedded in adjustable magnetic block (5)；The adjustable magnetic block (5) relative rotor magnetic pole module (1) in adjustable magnetic air gap (8) moves, movable model
It encloses and is limited by the adjustable magnetic block boss (7).
2. the rotor permanent magnet type flux switch motor according to claim 1 with flux control ability, which is characterized in that
The stator includes that armature winding (9) and stator core (10) are constituted；The armature winding (9) is set to stator core (10)
On armature tooth, using concentratred winding structure.
3. the rotor permanent magnet type flux switch motor according to claim 2 with flux control ability, which is characterized in that
Stator core (10) setting constitutes outer stator structure outside rotor magnetic pole module (1), or is arranged in rotor magnetic pole mould
The default minor structure of block (1) Inner Constitution.
4. the rotor permanent magnet type flux switch motor according to claim 1 with flux control ability, which is characterized in that
The stator core (10) is straight groove structure or flume structure.
5. the rotor permanent magnet type flux switch motor according to claim 1 with flux control ability, which is characterized in that
The rotor tooth (2), adjustable magnetic block (5), stator core (10) are permeability magnetic material.
6. the rotor permanent magnet type flux switch motor according to claim 1 with flux control ability, which is characterized in that
The permanent magnet (3) is neodymium iron boron or SmCo or ferrite permanent-magnet materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710139519.1A CN107070024B (en) | 2017-03-09 | 2017-03-09 | Rotor permanent magnet type flux switch motor with flux control ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710139519.1A CN107070024B (en) | 2017-03-09 | 2017-03-09 | Rotor permanent magnet type flux switch motor with flux control ability |
Publications (2)
| Publication Number | Publication Date |
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| CN107070024A CN107070024A (en) | 2017-08-18 |
| CN107070024B true CN107070024B (en) | 2019-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710139519.1A Active CN107070024B (en) | 2017-03-09 | 2017-03-09 | Rotor permanent magnet type flux switch motor with flux control ability |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108733963B (en) * | 2018-06-13 | 2023-04-18 | 马鞍山马钢电气修造有限公司 | Design method for permanent magnet energy-saving improved rotor of three-phase asynchronous motor |
| CN114567098B (en) * | 2022-04-19 | 2023-08-25 | 南京师范大学 | Compound permanent magnet multi-tooth magnetic flux switching motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100595076B1 (en) * | 1997-10-07 | 2006-08-30 | 발레오 에뀝망 엘렉뜨리끄 모떼르 | An electrical machine with dual excitation, especially a motor vehicle alternator |
| CN104362822A (en) * | 2014-10-24 | 2015-02-18 | 东南大学 | Self-flux-weakening composite flux-switching permanent-magnet motor |
| CN104539125A (en) * | 2015-01-19 | 2015-04-22 | 上海电机学院 | Mixed excitation flux switching motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110089774A1 (en) * | 2007-01-30 | 2011-04-21 | Kramer Dennis A | Transverse flux motor with integral cooling |
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2017
- 2017-03-09 CN CN201710139519.1A patent/CN107070024B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100595076B1 (en) * | 1997-10-07 | 2006-08-30 | 발레오 에뀝망 엘렉뜨리끄 모떼르 | An electrical machine with dual excitation, especially a motor vehicle alternator |
| CN104362822A (en) * | 2014-10-24 | 2015-02-18 | 东南大学 | Self-flux-weakening composite flux-switching permanent-magnet motor |
| CN104539125A (en) * | 2015-01-19 | 2015-04-22 | 上海电机学院 | Mixed excitation flux switching motor |
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