CN106877607A - Using the winding divergence type bearingless synchronous reluctance motor of Halbach permanent magnet arrays - Google Patents
Using the winding divergence type bearingless synchronous reluctance motor of Halbach permanent magnet arrays Download PDFInfo
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- CN106877607A CN106877607A CN201710232329.4A CN201710232329A CN106877607A CN 106877607 A CN106877607 A CN 106877607A CN 201710232329 A CN201710232329 A CN 201710232329A CN 106877607 A CN106877607 A CN 106877607A
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- Prior art keywords
- winding
- armature
- rotor
- permanent magnet
- tooth
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
- H02K21/04—Windings on magnets for additional excitation ; Windings and magnets for additional excitation
- H02K21/046—Windings on magnets for additional excitation ; Windings and magnets for additional excitation with rotating permanent magnets and stationary field winding
-
- 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
- H02K1/2753—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]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Synchronous Machinery (AREA)
- Linear Motors (AREA)
Abstract
The invention discloses a kind of winding divergence type bearingless synchronous reluctance motor of use Halbach permanent magnet arrays, including stator and rotor；It is provided with the stator and include armature winding by the exchange winding of alternating current independent control and can act also as exchanging armature using providing the Exciting Windings for Transverse Differential Protection of the power input of motor using the excitation field for carrying out regulation motor as desired as AC excitation, and the stator has been alternately distributed armature tooth and excitation tooth；Armature winding is located on armature tooth, and Exciting Windings for Transverse Differential Protection is located on excitation tooth；The rotor includes rotor core, magnetic barrier and the Halbach permanent magnet arrays inside magnetic barrier；It is superimposed with to realize the DC current of rotor suspension in Exciting Windings for Transverse Differential Protection.It is separated by by armature winding/power winding and Exciting Windings for Transverse Differential Protection, realizes the separation of armature supply and exciting current, fundamentally solves the problems, such as that power factor is low, and to realize that the rotor suspension function of motor provides possibility.
Description
Technical field
The present invention relates to a kind of synchronous reluctance permanent magnetic motors structure technology, belong to design of electrical motor correlative technology field.
Background technology
The increasingly serious research for causing electric automobile of energy crisis and problem of environmental pollution receives attention extensively.Using dilute
The embedded rotor magneto of soil material relies on high power and torque density, high efficiency, output-constant operation scope wider,
Electric automobile is applied widely in field.But because rare earth permanent-magnetic material is expensive, resource-constrained, and manufactured
There is considerable influence to environment in journey.Therefore the few rare earth of research and development/there is important reason without rare earth permanent magnet motor and system
By meaning and application value.And synchronous magnetic resistance motor can not be used by it or using only the advantage of a small amount of low cost permanent magnets,
It is considered as a kind of few rare earth of great industrial potential/without rare-earth electric motor.
To solve pure synchronous magnetic resistance motor since it is desired that larger this problem of exciting current, rotor magnetic is embedded in by permanent magnet
Barrier is arisen at the historic moment with providing the scheme of permanent magnet excitation, for reduces cost, rare earth permanent-magnetic material, the electromagnetism of motor is not used typically
Torque is mainly derived from reluctance torque.The design object of current synchronous magnetic resistance motor focuses primarily upon increase torque density, weakens
Torque pulsation, raising power factor, raising anti-four aspects of degaussing ability of permanent magnet.Four motors of design object for more than
Topological structure and Optimization Design, design of electrical motor personnel propose various new constructions, can be attributed to the excellent of magnetic barrier structure
Change and the optimization to magnet structure.However, these new constructions carry out improvement design just for rotor-side, and it is not fixed to motor
Minor structure carries out innovative design.Improvement design is only carried out to rotor structure limited to improving the electromagnetic performance of motor, especially not
Can fundamentally solve the problems, such as that power factor and convex grey subset are low.
The content of the invention
Technical problem：To overcome problems of the prior art, the purpose of the present invention is to propose to a kind of new synchronization
Reluctance permanent magnet motor structure, is separated by by armature winding/power winding and Exciting Windings for Transverse Differential Protection, realizes armature supply and excitation
The separation of electric current, fundamentally solves the problems, such as that power factor is low, and to realize that the rotor suspension function of motor is provided
May.In addition, by using Halbach permanent magnet arrays, being built up using field orientation specific to the permanent magnet array and diverging being made
With improve the convex grey subset of motor and the anti-degaussing ability of permanent magnet.
Technical scheme：The invention discloses a kind of winding divergence type bearing-free synchronization magnetic of use Halbach permanent magnet arrays
Resistance motor, it is characterised in that including stator and rotor；Be provided with the stator is included by the exchange winding of alternating current independent control
Armature winding is used with can act also as exchanging armature using the excitation field for carrying out regulation motor as desired as AC excitation
To provide the Exciting Windings for Transverse Differential Protection of the power input of motor, and the stator has been alternately distributed armature tooth and excitation tooth；Armature winding is located at
On armature tooth, Exciting Windings for Transverse Differential Protection is located on excitation tooth；The rotor includes rotor core, magnetic barrier and the Halbach inside magnetic barrier
Permanent magnet array；It is superimposed with to realize the DC current of rotor suspension in Exciting Windings for Transverse Differential Protection.
Machine winding is divided into polyphase armature winding and multi-phase excitation winding, armature supply is realized and is mutually divided with exciting current
From effect, improve the power factor and efficiency of motor.DC current is passed through simultaneously in the multi-phase excitation winding, rotor is realized
Suspension function in vertical direction and the regulation of position in the horizontal direction.The polyphase ac Exciting Windings for Transverse Differential Protection need increase magnetic and
Used as AC excitation winding during weak magnetic, as redundancy armature winding when without adjustable magnetic, normally run with main armature winding；
When permanent magnet occurs irreversible demagnetization, the polyphase windings can be as Exciting Windings for Transverse Differential Protection, there is provided air-gap field, maintains motor output
Power；In main armature winding failure, the set winding runs as Hot Spare armature winding, realizes fault-tolerant operation under failure.Separately
On the one hand, rotor uses Halbach permanent magnet array excitations, improves the convex grey subset of motor, and then improves electromagnetic torque output
With permanent magnet utilization rate, and cause near magnetic barrier edge permanent magnet there is stronger anti-degaussing ability.
Further, armature winding and Exciting Windings for Transverse Differential Protection are using centralized winding.
Further, Exciting Windings for Transverse Differential Protection and armature winding groove area ratio determine by the armature tooth and excitation tooth size, electricity
Armature tooth and excitation tooth are of different sizes, can increase air gap flux density harmonic content, reduce location torque, when with Halbach permanent magnetism battle array
When row are engaged, the convex grey subset of motor can be further improved.
Further, the rotor can flexibly be set to external stator/internal rotor or outer rotor/default minor structure, magnetic field
Direction can flexibly be set to axial magnetic field or transverse magnetic field structure.
Further, the motor can make pure generating, the operation of pure electronic or generating-electric assembling.
Beneficial effect：The present invention compared with prior art, with advantages below：
First, wherein a set of winding is also served as AC excitation winding and redundant electric by the present invention by way of separating winding
Pivot winding is used.By the air-gap field of exciting current adjustment motor, magnetic can be both increased to produce larger starting torque, again might be used
Weak magnetic realizes wide speed regulating range, fundamentally solves the problems, such as that synchronous reluctance permanent magnetic motors power factor is low.On the other hand
The fault-tolerant ability of motor is improve, when permanent magnet occurs irreversible demagnetization, there is provided air-gap field, makes motor continuous service；And
In armature winding failure or when needing increase power, make the operation of Hot Spare armature winding.Excitation and armature coil are separately controlled
System, reduces the difficulty of control.
Second, it is of the invention by making armature tooth and excitation tooth of different sizes, by optimization design, can be by weakening air gap
The close harmonic content of magnetic, and then reduce motor torque ripple and back-emf harmonic content, while improve the flexibility of design of electrical motor.
3rd, direct current is passed through in Exciting Windings for Transverse Differential Protection of the invention, i.e., DC component is superimposed in exciting current, to realize turning
The suspension function of son, and position adjustments in the horizontal direction.
4th, it is whole compared to existing because the present invention is embedded in Halbach permanent magnet arrays in rotor square edge magnetic barrier
Block permanent magnet and common piecemeal permanent magnet and magnetic barrier structure, can improve the convex grey subset and electromagnetic torque of motor, and permanent magnetism
Utilization rate, and the rotor degree of saturation and power factor of motor can be improved.
5th, armature tooth and excitation tooth combining form of different sizes in the present invention can be with rotor Halbach permanent magnetism battle arrays
The specific poly- magnetic effect of row is engaged, and further improves motor convex grey subset, improves power factor and torque output capability.
6th, the present invention uses Halbach permanent magnet arrays, can cause that permanent magnet has stronger anti-degaussing ability.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Wherein：Stator (1), armature winding (1.1), Exciting Windings for Transverse Differential Protection (1.2), armature tooth (1.3), excitation tooth (1.4), rotor
2, rotor core (2.1), magnetic barrier (2.2), Halbach permanent magnet arrays (2.3).
Specific embodiment
A kind of winding divergence type bearing-free synchronous reluctance of the use Halbach permanent magnet arrays of the present embodiment shown in Fig. 1
Motor, is divided into stator 1 and rotor 2 from topological structure；Armature winding 1.1 and Exciting Windings for Transverse Differential Protection 1.2 are provided with the stator 1, electricity
Pivot winding 1.1 is with Exciting Windings for Transverse Differential Protection 1.2 and exchanges winding, respectively by alternating current independent control.Exciting Windings for Transverse Differential Protection 1.2 can be according to need
Used as AC excitation, can also make exchange armature and use, the stator 1 has been alternately distributed armature tooth 1.3 and excitation tooth 1.4；Electricity
Pivot winding 1.1 is enclosed within armature tooth 1.3 in the form of concentratred winding, and Exciting Windings for Transverse Differential Protection 1.2 is enclosed within excitation in the form of concentratred winding
On tooth 1.4；The big I of armature tooth 1.3 and excitation tooth 1.4 is adjusted flexibly according to actual needs, Exciting Windings for Transverse Differential Protection 1.2 and armature around
1.1 groove area ratios of group determine that armature tooth and excitation tooth are of different sizes, can increase by armature tooth 1.3 and the size of excitation tooth 1.4
Air gap flux density harmonic content, reduces location torque, when being engaged with Halbach permanent magnet arrays, can further improve motor
Convex grey subset.
The rotor 2 includes rotor core 2.1, magnetic barrier 2.2 and the Halbach permanent magnet arrays 2.3 inside magnetic barrier 2.2；
It is superimposed with to realize the DC current of rotor suspension in Exciting Windings for Transverse Differential Protection 1.2, i.e., is led in armature winding 1.1 and Exciting Windings for Transverse Differential Protection 1.2
While entering alternating current, DC component is passed through in Exciting Windings for Transverse Differential Protection 1.2, is used to realize rotor suspension function in vertical direction
Machine winding is divided into polyphase armature winding and multi-phase excitation winding with the position adjustments in horizontal direction, armature supply is realized
The effect being separated with exciting current, improves the power factor and efficiency of motor.And superposition is passed through directly in Exciting Windings for Transverse Differential Protection 1.2
Stream electric current, realizes rotor suspension function in vertical direction and the regulation of position in the horizontal direction.The Exciting Windings for Transverse Differential Protection 1.2 exists
Need to be used as AC excitation winding when increasing magnetic and weak magnetic, as redundancy armature winding when without adjustable magnetic, with armature winding
1.1 normal operations；When permanent magnet occurs irreversible demagnetization, the Exciting Windings for Transverse Differential Protection 1.2 provides air-gap field, maintains motor output work
Rate；In 1.1 failure of armature winding, the Exciting Windings for Transverse Differential Protection 1.2 is run as Hot Spare armature winding, realizes fault-tolerant fortune under failure
OK.
The Halbach permanent magnet arrays of the present embodiment can be made of ferrite, SmCo, NdFeB material.
Specifically, the stator 1 of the present embodiment uses 24 grooves, threephase armature winding and three-phase AC excitation winding internal are wound on
On armature tooth 1.3 and excitation tooth 1.4, it is made up of 4 coils respectively per phase；Rotor 2 is 2 pairs of poles, i.e. 4 pole structures, and Halbach is forever
Magnetic array 2.3 is made up of ferrite, and stator core and rotor core 2.1 are stacked by silicon steel punched chip.
The packing material of the magnetic barrier of the present embodiment is air or other non-magnet_conductible materials.Armature winding and Exciting Windings for Transverse Differential Protection it is every
The phase line number of turns, coil turn, parallel branch number can be identical or different respectively, and armature winding and Exciting Windings for Transverse Differential Protection can be used same power supply
Or different electrical power, the edge of the permanent magnet of Halbach permanent magnet arrays can be right angle, or arc.The rotor can spirit
Work is set to external stator/internal rotor or outer rotor/default minor structure, and magnetic direction can flexibly be set to axial magnetic field or transverse direction
Magnetic field structure.
The motor of the present embodiment can make pure generating, the operation of pure electronic or generating-electric assembling.
Claims (5)
1. the winding divergence type bearingless synchronous reluctance motor of a kind of use Halbach permanent magnet arrays, it is characterised in that including fixed
Sub (1) and rotor (2)；
Be provided with the stator (1) includes armature winding (1.1) and can be according to need by the exchange winding of alternating current independent control
To be used as AC excitation the excitation field for carrying out regulation motor can act also as exchange armature use it is defeated to provide the power of motor
The Exciting Windings for Transverse Differential Protection (1.2) for entering, the stator (1) has been alternately distributed armature tooth (1.3) and excitation tooth (1.4)；The armature winding
(1.1) on armature tooth (1.3), the Exciting Windings for Transverse Differential Protection (1.2) is on excitation tooth (1.4)；
The rotor (2) is including rotor core (2.1), magnetic barrier (2.2) and positioned at the internal Halbach permanent magnetism battle array of magnetic barrier (2.2)
Row (2.3)；
It is superimposed with to realize the DC current of rotor suspension in the Exciting Windings for Transverse Differential Protection (1.2).
2. a kind of winding divergence type bearing-free synchronous reluctance of use Halbach permanent magnet arrays according to claim 1 is electric
Machine, it is characterised in that the armature winding (1.2) and Exciting Windings for Transverse Differential Protection (1.3) are using centralized winding.
3. a kind of winding divergence type bearing-free synchronous reluctance of use Halbach permanent magnet arrays according to claim 1 is electric
Machine, it is characterised in that the Exciting Windings for Transverse Differential Protection (1.2) and armature winding (1.1) groove area ratio is by the armature tooth (1.3) and encourages
Magnetic tooth (1.4) size is determined.
4. a kind of winding divergence type bearing-free synchronous reluctance of use Halbach permanent magnet arrays according to claim 1 is electric
Machine, it is characterised in that the stator, rotor can flexibly be set to external stator/internal rotor or outer rotor/default minor structure, magnetic field
Direction can flexibly be set to axial magnetic field or transverse magnetic field structure.
5. a kind of winding divergence type bearing-free synchronous reluctance of use Halbach permanent magnet arrays according to claim 1 is electric
Machine, it is characterised in that the motor can make pure generating, the operation of pure electronic or generating-electric assembling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710232329.4A CN106877607A (en) | 2017-04-11 | 2017-04-11 | Using the winding divergence type bearingless synchronous reluctance motor of Halbach permanent magnet arrays |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710232329.4A CN106877607A (en) | 2017-04-11 | 2017-04-11 | Using the winding divergence type bearingless synchronous reluctance motor of Halbach permanent magnet arrays |
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| CN106877607A true CN106877607A (en) | 2017-06-20 |
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| CN201710232329.4A Pending CN106877607A (en) | 2017-04-11 | 2017-04-11 | Using the winding divergence type bearingless synchronous reluctance motor of Halbach permanent magnet arrays |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968614A (en) * | 2017-12-18 | 2018-04-27 | 远景能源（江苏）有限公司 | Demagnetization guard method applied to magneto |
| CN108199509A (en) * | 2017-12-27 | 2018-06-22 | 江苏大学 | A kind of fractional-slot concentratred winding permanent magnet synchronous motor and its design method for improving reluctance torque |
| CN109245471A (en) * | 2018-11-06 | 2019-01-18 | 武汉理工大学 | A kind of alternately polar permanent magnetic vernier motor |
| CN109951038A (en) * | 2019-03-05 | 2019-06-28 | 南京航空航天大学 | Bilateral excitation type tangential magnet-steel hybrid exciting brushless motor |
| WO2019205733A1 (en) * | 2018-04-27 | 2019-10-31 | 江苏大学 | Fault-tolerant modular permanent magnet assisted synchronous reluctance motor and modular winding design method therefor |
| IT201800010777A1 (en) * | 2018-12-04 | 2020-06-04 | Torino Politecnico | Multi-flow barrier rotor with permanent magnets for synchronous reluctance electric machine |
| CN111463938A (en) * | 2020-04-14 | 2020-07-28 | 合肥工业大学 | Method for reducing magnetic flux leakage in rotor of low-speed high-torque permanent magnet synchronous motor |
| CN112564443A (en) * | 2020-12-01 | 2021-03-26 | 东南大学 | Mixed excitation axial magnetic field permanent magnet synchronous motor structure |
| DE102021100867A1 (en) | 2021-01-18 | 2021-10-14 | Audi Aktiengesellschaft | Rotor for a synchronous machine |
| WO2022180871A1 (en) * | 2021-02-25 | 2022-09-01 | 日本電産株式会社 | Rotor and motor comprising said rotor |
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| CN109951038B (en) * | 2019-03-05 | 2020-07-24 | 南京航空航天大学 | Bilateral excitation type tangential magnetic steel mixed excitation brushless motor |
| CN109951038A (en) * | 2019-03-05 | 2019-06-28 | 南京航空航天大学 | Bilateral excitation type tangential magnet-steel hybrid exciting brushless motor |
| CN111463938A (en) * | 2020-04-14 | 2020-07-28 | 合肥工业大学 | Method for reducing magnetic flux leakage in rotor of low-speed high-torque permanent magnet synchronous motor |
| CN112564443A (en) * | 2020-12-01 | 2021-03-26 | 东南大学 | Mixed excitation axial magnetic field permanent magnet synchronous motor structure |
| CN112564443B (en) * | 2020-12-01 | 2021-09-07 | 东南大学 | Mixed excitation axial magnetic field permanent magnet synchronous motor structure |
| DE102021100867A1 (en) | 2021-01-18 | 2021-10-14 | Audi Aktiengesellschaft | Rotor for a synchronous machine |
| WO2022180871A1 (en) * | 2021-02-25 | 2022-09-01 | 日本電産株式会社 | Rotor and motor comprising said rotor |
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Application publication date: 20170620 |
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