CN108599493A - A kind of pure electric automobile axial magnetic flux Hybrid Excitation Switched Reluctance Motor - Google Patents
A kind of pure electric automobile axial magnetic flux Hybrid Excitation Switched Reluctance Motor Download PDFInfo
- Publication number
- CN108599493A CN108599493A CN201810376202.4A CN201810376202A CN108599493A CN 108599493 A CN108599493 A CN 108599493A CN 201810376202 A CN201810376202 A CN 201810376202A CN 108599493 A CN108599493 A CN 108599493A
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- Prior art keywords
- stator
- piecemeal
- rotor
- shaped
- axial
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
-
- 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
-
- 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
- H02K1/17—Stator cores with permanent magnets
-
- 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
- H02K2201/12—Transversal flux machines
-
- 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 present invention discloses a kind of pure electric automobile axial magnetic flux Hybrid Excitation Switched Reluctance Motor, axial both ends one rotor of each face of stator, and stator is by axial cross section in I-shaped, circumferentially equally distributed NsA I-shaped stator piecemeal composition, the centre of each I-shaped stator piecemeal are stator yokes and with two stator slots and 4 stator tooths in axial direction, and winding is wound in stator yoke；The fixed permanent magnet embedded with a block length cube in each stator slot；Each rotor is by circumferentially equally distributed NrA rotor piecemeal composition；Stator and rotor do not generate radial load, and axial force is cancelled out each other, and reduce vibrating noise when motor operation, each magnetic circuit is independent, without mutual inductance；Permanent magnet is added in stationary part, enhances flux density when motor excitation, improves the power density of motor, increases electric motor starting torque.
Description
Technical field
The invention belongs to technical field of motors, specially a kind of composite excitation switch magnetic resistance for driving pure electric automobile
Motor.
Background technology
Torque pulsation is big in the process of running for traditional switched reluctance machines, and a phase winding excitation generates prodigious when being powered
Radial load makes motor case generate moderate finite deformation, in turn results in larger vibration noise, while starting torque is low, starting difficulty,
Therefore its application in pure electric automobile is constrained.
China Patent Publication No. is CN205509741U, a kind of entitled " tandem type axial excitation switched reluctance machines knot
Switched reluctance machines disclosed in the document of structure " are to use cascade form, and by U-shaped stator shaft orientation excitation, this is in certain journey
Shell radial direction deformation is disperseed on degree, has alleviated vibration, reduce noise.China Patent Publication No. is CN204517610U, name
Referred to as switched reluctance machines disclosed in " a kind of Hybrid Excitation Switched Reluctance Motor and its stator structure " document, in stator tooth
It is equipped with permanent magnet, and is provided with Exciting Windings for Transverse Differential Protection between two adjacent stator tooths, improves the power density of motor.More than
Both switched reluctance machines are stated to be disadvantageous in that not while solving that switched reluctance machines torque pulsation is big and starting torque
Small problem.
Invention content
The purpose of the invention is to overcome torque pulsation existing for existing Conventional switched reluctance motor big and starting torque
Small problem proposes that a kind of axial magnetic flux suitable for pure electric automobile that can be improved starting torque, reduce torque pulsation mixes
Field switch reluctance motor.
To achieve the goals above, a kind of pure electric automobile of the present invention axial magnetic flux composite excitation switch magnetic resistance
Motor specifically uses following scheme：Axial both ends one rotor of each face of stator, stator by axial cross section in it is I-shaped, along circle
Week equally distributed NsThe centre of a I-shaped stator piecemeal composition, each I-shaped stator piecemeal is stator yoke and has axial
On two stator slots and 4 stator tooths, be wound with winding in stator yoke；It is fixed in each stator slot to be embedded with a block length cube
Permanent magnet；Each rotor is by circumferentially equally distributed NrA rotor piecemeal composition.
NsThe quantity N of a I-shaped stator piecemealsWith the quantity N of rotor piecemealrMeet LCM (Ns,Nr)=mNr, LCM is to take
Least common multiple, number of motor phases m.
The internal diameter of rotor piecemeal and I-shaped stator piecemeal, the internal diameter of permanent magnet are all equal, the outer diameter and work of rotor piecemeal
Font stator piecemeal, the outer diameter of permanent magnet are all equal, the tangential equal length of rotor piecemeal and I-shaped stator piecemeal.
The beneficial effects of the invention are as follows：
1, motor magnetic loop of the present invention is axially distributed at air gap, and stator and rotor do not generate radial load, simultaneously
Axial force is cancelled out each other, therefore electric machine casing deformation is small, reduces vibrating noise when motor operation.
2, the magnetic loop of the motor of the present invention only stator position Jing Guo itself excitation, not by other stator positions,
Therefore each magnetic circuit is independent, without mutual inductance.
3, the present invention adds permanent magnet in stationary part, enhances flux density when motor excitation, improves the work(of motor
Rate density increases electric motor starting torque, the defect for overcoming regular tap reluctance motor starting torque small, is suitable for pure electric vehicle vapour
Vehicle enhances the stationarity of automobilism.
Description of the drawings
Fig. 1 is a kind of axial arrangement section view of pure electric automobile axial magnetic flux Hybrid Excitation Switched Reluctance Motor of the present invention
Figure；
Fig. 2 is the three-dimensional structure diagram of stator and permanent magnet in Fig. 1；
Fig. 3 is the radial cross-section of stator in Fig. 1, permanent magnet and stator support；
Fig. 4 is the radial cross-section of single rotor and rotor field spider in Fig. 1；
Fig. 5 is that single I-shaped stator piecemeal faces enlarged drawing with permanent magnet assembling structure in Fig. 2；
Fig. 6 is magnetic flux path schematic diagram when motor of the present invention shown in Fig. 1 is located at maximum induction position；
In figure：1, stator：1-1, stator tooth, 1-2, stator yoke；1-3, stator slot；2, permanent magnet；3, rotor；4, winding；
5, stator support；6, rotor field spider；7, bearing；8, shaft.
Specific implementation mode
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 5, the present invention includes stator 1, axial both ends one rotor 3 of each face of stator 1,
It is dual-rotor structure motor.There are axial air-gap between two rotors 3 and the axial both ends of stator 1, two rotors 3 pass through
Corresponding rotor field spider 6 connects shaft 8.The structure of two rotors 3 is identical, and the center about stator 1 is in axially symmetric.
Stator 1 is by NsA I-shaped stator piecemeal composition, NsA I-shaped stator piecemeal is circumferentially uniformly distributed, I-shaped
The axial cross section of stator piecemeal is in I-shaped structure, adjacent two NsAngle between a I-shaped stator piecemeal is 360/Ns
Degree, each I-shaped stator piecemeal are formed by silicon steel plate stacking.
Referring to Fig. 5, each I-shaped stator piecemeal is arranged symmetrically in the axial direction, with two openings in face axial direction
With 4 stator tooth 1-1, the direction of two openings is on the contrary, two openings form the opposite stator slot 1-3 of both direction.It is I-shaped
The centre of stator piecemeal is stator yoke 1-2, tangential direction arrangements of the stator yoke 1-2 along circumference where its central point.Stator yoke 1-2
On be wound with winding 4.
The fixed permanent magnet 2 embedded with a block length cube, permanent magnet 2 are fixedly connected on stator in each stator slot 1-3
The portions tooth 1-1 are in close contact with stator tooth 1-1, but are not contacted with stator slot 1-3, between have axial distance, the axial direction of permanent magnet 2
Length is depending on the space needed for winding 4.Permanent magnet 2 is cutting orientation magnetizing, and magnetizing direction is identical.
NsA I-shaped stator piecemeal is all fixedly connected on a stator support 5, and the material of stator support 5 is non-magnetic
Material processes N thereonsA axially extending bore, for fixing NsA I-shaped stator piecemeal, NsA I-shaped stator piecemeal is fixed embedding
In corresponding axially extending bore.Stator support 5 is sleeved on 7 outer ring of bearing, and 7 inner ring fixing sleeve of bearing makes stator branch outside shaft 8
Frame 5 by bearing 7 it is concentric be supported in shaft 8.
Referring to Fig. 1 and Fig. 4, each rotor 3 is by NrA rotor piecemeal composition, NrA rotor piecemeal is circumferentially uniformly distributed,
Two neighboring NrAngle between a rotor piecemeal is 360/NrDegree, NrA rotor piecemeal is formed by silicon steel plate stacking.On rotor 3
NrA rotor piecemeal is all fixed on a rotor field spider 6, and the material of rotor field spider 6 is non-magnet material, machined N thereonr
A axially extending bore, for fixing NrA rotor piecemeal, NrA rotor piecemeal is embedded in corresponding NrIn a axially extending bore, rotor field spider 6
Coaxial fixing sleeve is in shaft 8, with coaxial rotating in shaft 8.
NsThe quantity N of a I-shaped stator piecemealsWith the quantity N of rotor piecemealrRelationship meet：LCM(Ns,Nr)=mNr,
LCM is to take least common multiple, number of motor phases m.
The internal diameter of rotor piecemeal and the internal diameter of I-shaped stator piecemeal and permanent magnet 2 are all equal, the outer diameter of rotor piecemeal with
The outer diameter of I-shaped stator piecemeal and permanent magnet 2 is all equal.The tangential equal length of rotor piecemeal and I-shaped stator piecemeal turns
Length of the axial length of sub-piecemeal slightly larger than stator tooth 1-1 on tangential.
The axial length of stator support 5 is identical as the I-shaped axial length of stator piecemeal, the axial length of rotor field spider 6
It is identical as the axial length of rotor piecemeal.
Referring to Fig. 5, no winding on 4 stator tooth 1-1, winding 4 is twined on stator yoke 1-2.Two works diametrically
Winding 4 on font stator piecemeal constitutes a phase of motor, and the winding 4 on two stator yoke 1-2 per phase is connected in parallel, together
When, 4 arrangement form of winding per phase is identical.
When 4 excitation of winding, magnetic loop referring to Fig. 6, with regular tap reluctance motor magnetic loop the difference is that, this hair
The magnetic loop of the bright motor only stator yoke 1-2 Jing Guo itself excitation, not by other stator yokes 1-2, therefore each magnetic circuit is independent,
There is no mutual inductance.Due to using composite excitation and dual-rotor structure, the magnetic of 4 excitation of the winding generation on a stator yoke 1-2
Circuit particularly may be divided into 4 circuits, respectively there is time that two circuits are symmetrical about the axial centre face of stator, and 4 excitation of winding generates
Road A, B path are sequentially：The stator tooth 1- of stator yoke 1-2, stator tooth 1-1, axial air-gap, rotor piecemeal, axial air-gap, homonymy
1, stator yoke 1-2.The paths energized circuit C, D that permanent magnet 2 generates are sequentially：Permanent magnet 2, axial air-gap, turns stator tooth 1-1
Sub-piecemeal, axial air-gap, homonymy stator tooth 1-1, permanent magnet 2.
The magnetic flux and the magnetic flux at axial air-gap of permanent magnet 2 that the energization of winding 4 generates are axially distributed, I-shaped stator piecemeal
Radial load, therefore the deformation very little of motor everywhere are not generated between rotor piecemeal, to reduce vibration noise.Meanwhile by
Flux density is enhanced in the magnetic flux that permanent magnet 2 generates, improves the output torque of motor.
When the present invention works, motor is powered successively per phase winding 4, drives piecemeal rotor 3 to rotate according to minimum reluctance principle,
Rotor 3 drives rotor field spider 6 to rotate, and since rotor field spider 6 and shaft 8 are tightly fastened, and then shaft 8 is driven to rotate.
Claims (8)
1. a kind of pure electric automobile axial magnetic flux Hybrid Excitation Switched Reluctance Motor, each face in the axial both ends of stator (1) one
A rotor (3), it is characterized in that：Stator (1) is by axial cross section in I-shaped, circumferentially equally distributed NsA I-shaped divided stator
Block forms, and the centre of each I-shaped stator piecemeal is stator yoke (1-2) and with two stator slots (1-3) and 4 in axial direction
A stator tooth (1-1) is wound with winding (4) in stator yoke (1-2)；It is fixed in each stator slot (1-3) to be embedded with a block length side
The permanent magnet (2) of body；Each rotor (3) is by circumferentially equally distributed NrA rotor piecemeal composition.
2. a kind of pure electric automobile axial magnetic flux Hybrid Excitation Switched Reluctance Motor according to claim 1, feature
It is：NsThe quantity N of a I-shaped stator piecemealsWith the quantity N of rotor piecemealrMeet LCM (Ns,Nr)=mNr, LCM is to take minimum
Common multiple, number of motor phases m.
3. a kind of pure electric automobile axial magnetic flux Hybrid Excitation Switched Reluctance Motor according to claim 1, feature
It is：Permanent magnet (2) is in close contact with stator tooth (1-1), is not contacted with stator slot (1-3).
4. a kind of pure electric automobile axial magnetic flux Hybrid Excitation Switched Reluctance Motor according to claim 1, feature
It is：NrIn a rotor piecemeal all fixed correspondence axially extending bores embedded on the same rotor field spider (6), rotor field spider (6) is coaxial
Fixing sleeve is in shaft (8).
5. a kind of pure electric automobile axial magnetic flux Hybrid Excitation Switched Reluctance Motor according to claim 1, feature
It is：NsA I-shaped stator piecemeal is all fixed in the correspondence axially extending bore of the same stator support (5), stator support (5)
It is supported in shaft (8) by bearing (7).
6. a kind of pure electric automobile axial magnetic flux Hybrid Excitation Switched Reluctance Motor according to claim 1, feature
It is：The internal diameter of rotor piecemeal and the internal diameter of I-shaped stator piecemeal, permanent magnet (2) are all equal, the outer diameter and I-shaped of rotor piecemeal
Type stator piecemeal, the outer diameter of permanent magnet (2) are all equal, the tangential equal length of rotor piecemeal and I-shaped stator piecemeal.
7. a kind of pure electric automobile axial magnetic flux Hybrid Excitation Switched Reluctance Motor according to claim 1, feature
It is：The axial length of stator support (5) is identical as the I-shaped axial length of stator piecemeal, the axial length of rotor field spider (6)
It is identical as the axial length of rotor piecemeal.
8. a kind of pure electric automobile axial magnetic flux Hybrid Excitation Switched Reluctance Motor according to claim 1, feature
It is：Winding (4) on two I-shaped stator piecemeals diametrically constitutes a phase, on two stator yokes (1-2) per phase
Winding (4) is in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810376202.4A CN108599493B (en) | 2018-04-25 | 2018-04-25 | Axial magnetic flux hybrid excitation switched reluctance motor for pure electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810376202.4A CN108599493B (en) | 2018-04-25 | 2018-04-25 | Axial magnetic flux hybrid excitation switched reluctance motor for pure electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108599493A true CN108599493A (en) | 2018-09-28 |
| CN108599493B CN108599493B (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810376202.4A Active CN108599493B (en) | 2018-04-25 | 2018-04-25 | Axial magnetic flux hybrid excitation switched reluctance motor for pure electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108599493B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649760A (en) * | 2018-05-07 | 2018-10-12 | 南京理工大学 | A kind of two-rotor axial magnetic flux partitioned organization switched reluctance machines |
| CN112564442A (en) * | 2020-12-01 | 2021-03-26 | 东南大学 | Axial magnetic field birotor permanent magnet vernier motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001327138A (en) * | 2000-05-12 | 2001-11-22 | Nippon Riken Kk | Motor utilizing converging phenomenon of magnetic flux |
| CN105245071A (en) * | 2015-10-30 | 2016-01-13 | 赵明珍 | Energy-saving permanent magnetism switched reluctance motor |
| CN105827027A (en) * | 2016-01-07 | 2016-08-03 | 安泰科技股份有限公司 | Axial air gap switch reluctance motor and preparation method thereof |
-
2018
- 2018-04-25 CN CN201810376202.4A patent/CN108599493B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001327138A (en) * | 2000-05-12 | 2001-11-22 | Nippon Riken Kk | Motor utilizing converging phenomenon of magnetic flux |
| CN105245071A (en) * | 2015-10-30 | 2016-01-13 | 赵明珍 | Energy-saving permanent magnetism switched reluctance motor |
| CN105827027A (en) * | 2016-01-07 | 2016-08-03 | 安泰科技股份有限公司 | Axial air gap switch reluctance motor and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649760A (en) * | 2018-05-07 | 2018-10-12 | 南京理工大学 | A kind of two-rotor axial magnetic flux partitioned organization switched reluctance machines |
| CN112564442A (en) * | 2020-12-01 | 2021-03-26 | 东南大学 | Axial magnetic field birotor permanent magnet vernier motor |
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| Publication number | Publication date |
|---|---|
| CN108599493B (en) | 2020-03-31 |
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