CN109217594A - A kind of 12/10 bearing-free permanent magnet biased witch reluctance motor - Google Patents
A kind of 12/10 bearing-free permanent magnet biased witch reluctance motor Download PDFInfo
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- CN109217594A CN109217594A CN201811064460.5A CN201811064460A CN109217594A CN 109217594 A CN109217594 A CN 109217594A CN 201811064460 A CN201811064460 A CN 201811064460A CN 109217594 A CN109217594 A CN 109217594A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
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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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/17—Stator cores with permanent magnets
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
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- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Synchronous Machinery (AREA)
Abstract
The invention discloses a kind of 12/10 structure bearing-free permanent magnet biased witch reluctance motors, are made of suspension pole iron core, torque pole iron core, biasing permanent magnet, torque moment permanent-magnet body, rotor core, suspension pole winding coil, torque pole winding coil and axis；Biasing permanent magnet is embedded between suspension pole iron core and torque pole iron core, and torque moment permanent-magnet body is embedded on the tooth of torque pole iron core；Suspension pole winding coil and torque pole winding coil are rotating around in suspension pole iron core and torque pole iron core；The inside of suspension pole iron core and torque pole iron core is rotor core, and the inside of rotor core is axis.12/10 structure bearing-free permanent magnet biased witch reluctance motor provided by the present invention solves the coupling of suspension pole and torque pole by biasing permanent magnet and air gap, and increases electromagnetic torque by torque moment permanent-magnet body, improves torque density.
Description
Technical field
The present invention relates to a kind of 12/10 bearing-free switch reluctance motors, and in particular to a kind of permanent magnet bias bearing-free switch
Reluctance motor can be used as high speed, high-precision driving motor.
Background technique
As the development of the rapid development of National Industrial, high speed, high-precision motor is increasingly taken seriously, however it is reliable
Property, high loss the problems such as restrict again at a high speed, the development of high-precision motor.So developing a kind of high reliablity, low-loss
Motor becomes for a kind of urgent need in industrial technology.And traditional mechanical bearing motor has frictional dissipation big, motor
The disadvantages of service life is short.Although existing air bearing, liquid bearing solve friction bring variety of problems, but since its structure is multiple
Miscellaneous, the disadvantages of efficiency is lower, reliability is poor and so that its application range is restricted.
In recent years, high reliablity, control is flexibly and high-speed adaptability is strong since switched reluctance machines have structure simple
The advantages that, therefore there is unique advantage in high speed situation.And bearing-free switch reluctance motor solves the friction of mechanical bearing motor
Loss problem, and it is at low cost, therefore bearing-free switch reluctance motor is developed.But current bearing-free switch reluctance motor
Torque pole and suspend extremely usually all on the same stator tooth, therefore exist at the two poles of the earth compared with close coupling so that motor is at work,
Suspension magnetic is unstable, it is difficult to realize the stability contorting that motor suspends.And due to using a part of stator tooth as suspension pole, torque
Pole is just reduced accordingly, and leads to the loss of motor torque.It is special in the Chinese invention application No. is 201310711241.2
In the bearing-free permanent magnet biased witch reluctance motor proposed in benefit, although suspension pole and torque pole are separated with magnetic shield, solve
Coupling condition, but due to the presence of magnetic shield, increases the radial dimension of motor, makes to assemble complex, and does not solve
Due to suspension pole presence caused by torque loss.
Summary of the invention
The purpose of the present invention is to provide a kind of 12/10 bearing-free switch reluctance motors, overcome existing bearing-free permanent magnet
The deficiency of biased witch reluctance motor technology changes the distribution mode of permanent magnet bias magnetic field, solves rotor suspension control and torque
The coupling of control improves the torque density of motor.
To achieve the goals above, the invention provides the following technical scheme:
A kind of 12/10 bearing-free permanent magnet biased witch reluctance motor, by four suspension pole iron cores, four torque pole iron
Core, eight biasing permanent magnets, four torque moment permanent-magnet bodies, a rotor core, an axis, four suspension pole winding coils, eight
Torque pole winding coil composition, biasing permanent magnet are embedded between suspension pole iron core and torque pole iron core, the insertion of torque moment permanent-magnet body
On the tooth of torque pole iron core, biasing permanent magnet is hexahedron structure, and one of face is arcuate surface, other five faces are flat
Face is connected there are two side with the side of suspension pole iron core and torque pole iron core, and there are two teeth on the iron core of each torque pole；Torque
Permanent magnet is cuboid, is embedded between two teeth of torque pole iron core, and there are between suspension pole iron core and torque pole iron core
Two air gaps are wound with suspension pole winding coil on the iron core of suspension pole, are wound with torque pole winding coil on each tooth of torque pole iron core.Often
The central angle of circular arc between the tooth of the tooth of a suspension pole iron core torque pole iron core adjacent thereto is 27 °, each torque pole iron
The central angle of circular arc between two teeth of core is 36 °.The inside of suspension pole iron core and torque pole iron core is rotor core, rotor
The inside of iron core is axis；There are the first air gaps between suspension pole iron core, torque pole iron core and rotor core.
The principle of above scheme is: every two biases permanent magnet and provides biasing magnetic for one group for bearing-free switch reluctance motor
, to generate stable suspending power.Bias permanent magnet by suspension pole iron core yoke part, suspension pole iron core teeth portion, the first air gap,
Rotor core, axis form magnetic circuit, provide permanent magnet bias magnetic field, while adjusting the electric current in the winding coil of suspension pole to keep shaftless
The stable suspending power of bearing switch magnetic resistance motor rotor.(suspension pole iron core is labeled as A1, A2, B1, B2) generates magnetic with A1, A2
From the point of view of the direction of road, then the magnetic circuit that the suspension pole winding on the iron core of suspension pole generates is known are as follows: the A1 known to coil canoe leads to
The pole N is equivalent to after electricity, A2 is equivalent to the pole S, and magnetic circuit is set out by suspension pole iron core A1, by first between suspension pole and rotor
Air gap, rotor core, axis return to the pole A2, and magnetic circuit passes through the yoke portion of suspension pole iron core, two interstices again, and formation is closed back
Road, as shown in Figure 5.(biasing permanent magnet is labeled as P1, P2, P3, P4, P5, P6, P7, P8) generates magnetic circuit with P1, P2, P3, P4
Direction is seen, then biases the magnetic circuit of permanent magnet generation are as follows: from the pole N of P1 by suspension pole iron core A1, the first air gap turns magnetic circuit
Sub- iron core, axis return to the pole S of P2 after the iron core B1 of suspension pole, then go out to be sent back to the pole S of P1 from the pole N of P2, i.e., produce in y-axis direction
The magnetic field downward along the direction-y is given birth to；Magnetic circuit is from the pole N of P4 by suspension pole iron core A2, the first air gap, rotor
Iron core, axis return to the pole S of P3 after the iron core B1 of suspension pole, then go out to be sent back to the pole S of P4 from the pole N of P3, i.e., generate in y-axis direction
One upwards along the magnetic field in the direction+y, as shown in Figure 4.(torque pole iron core is labeled as T1, T2, T3, T4, T1 ', T2 ',
T3 ', T4 ') with (T1, T2, T1 ', T2 '), then known to the principle that generates of torque are as follows: T1, T2, T1 ', the coil windings string on T2 '
Connection, is powered simultaneously, and torque winding coil generates magnetic field, as shown in fig. 6, (torque moment permanent-magnet body is labeled as PM1, PM2, PM3,
PM4 it) generates magnetic circuit with PM1, PM3 and sees that, when torque winding coil no power, magnetic circuit is from the pole N of PM1, through over torque pole
Yoke portion returns to the pole S of PM1；Magnetic circuit returns to the pole S of PM3 through over torque pole yoke portion from the pole N of PM3；When torque winding coil
When energization, magnetic circuit is from the pole N of PM1, through over torque pole iron core T1, the first air gap, rotor core, the first air gap, torque pole
The pole S of PM1 is returned to after iron core T2；Magnetic circuit is from the pole N of PM3, through over torque pole iron core T3, the first air gap, rotor core,
The pole S of PM3 is returned to after one air gap, torque pole iron core T4；Due to the presence of torque moment permanent-magnet body, the magnetic field of torque pole is increased, from
And improve torque.
12/10 structure bearing-free permanent magnet biased witch reluctance motor provided by the present invention, it is gentle by biasing permanent magnet
Gap solves the coupling of suspension pole and torque pole, and increases electromagnetic torque by torque moment permanent-magnet body, improves torque density.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only one recorded in the present invention
A little embodiments are also possible to obtain other drawings based on these drawings for those of ordinary skill in the art.
Fig. 1 is 12/10 structure bearing-free permanent magnet biased witch reluctance motor axial section provided in an embodiment of the present invention；
Fig. 2 is rotor core in 12/10 structure bearing-free permanent magnet biased witch reluctance motor provided in an embodiment of the present invention
Structure chart；
Fig. 3 is suspension pole iron in 12/10 structure bearing-free permanent magnet biased witch reluctance motor provided in an embodiment of the present invention
Core and torque pole core structure figure；
Fig. 4 is that pole biasing is floated in 12/10 structure bearing-free permanent magnet biased witch reluctance motor provided in an embodiment of the present invention
Permanent magnet magnetic path figure；
Fig. 5 be 12/10 structure bearing-free permanent magnet biased witch reluctance motor provided in an embodiment of the present invention in suspension pole around
Group coil flux path profile；
Fig. 6 be 12/10 structure bearing-free permanent magnet biased witch reluctance motor transfer moment pole provided in an embodiment of the present invention around
Group coil flux path profile；
Fig. 7 is torque moment permanent-magnet in 12/10 structure bearing-free permanent magnet biased witch reluctance motor provided in an embodiment of the present invention
Body magnetic flux path figure；
Fig. 8 be 12/10 structure bearing-free permanent magnet biased witch reluctance motor transfer moment pole provided in an embodiment of the present invention around
Magnetic flux path figure when group and torque moment permanent-magnet body collective effect.
Description of symbols:
1, suspension pole stator core；2, torque pole iron core；3, permanent magnet is biased；4, torque moment permanent-magnet body；5, rotor core；6,
Axis；7, suspension pole winding coil；8, torque pole winding coil；9, interstice；10, the first air gap.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, below in conjunction with attached drawing to this hair
It is bright to be further detailed.
As shown in Figure 1, a kind of 12/10 bearing-free permanent magnet biased witch reluctance motor, by four suspension pole stator cores
1, four torque pole iron cores, 2, eight biasing 6, four, axis of rotor core 5, one of torque moment permanent-magnet body 4, one of permanent magnet 3, four
Winding coil 7, eight torque pole winding coils 8 in suspension pole form.Suspension pole iron core 1 is placed along+x ,-x ,+y, the direction-y, and its
On be wound with levitation force winding coil 8；Torque pole iron core 2 is evenly distributed on circumference, on each torque pole iron core 2 there are two
Tooth, and it is wound with torque pole winding coil 8 thereon.Eight biasing permanent magnets 3 are located at suspension pole iron core 1 and torque pole iron core 2
Yoke portion between.Torque moment permanent-magnet body 4 is embedded on the tooth of torque pole iron core, and biasing permanent magnet 3 is hexahedron structure, one of them
Face is arcuate surface, other five faces are plane, is connected there are two side with the side of suspension pole iron core 1 and torque pole iron core 2.Turn
Torque permanent magnet body 4 is cuboid, is embedded between two teeth of torque pole iron core 2, stays between suspension pole iron core and torque pole iron core
There is interstice 9, suspension pole winding coil 7 is wound on suspension pole iron core 1.Rotor core 5 is located at suspension pole iron core 1 and torque pole
The inside of iron core 2, as shown in Fig. 2, the structure of rotor core 5 is the salient-pole structure of ten magnetic pole tooths.It is axis inside rotor core 5
6, axis 6 need to have preferable permeance, to provide the magnetic flux path of suspending power.Suspension pole iron core 1, torque pole iron core 2
There are the first air gaps 10 between rotor core 5.
Fig. 3 is the structure of suspension pole iron core 1 and torque pole iron core 2 in 12/10 bearing-free permanent magnet biased witch reluctance motor
Figure, wherein 1 tooth A1, A2 of suspension pole iron core are one group, and B1, B2 are one group, every group of one group of coil of connecting.Suspension pole iron core teeth A1
Central angle with circular arc corresponding to the iron core teeth T1 of torque pole is 27 °, and torque pole iron core teeth T1 and torque pole iron core teeth T2 institute is right
The central angle for the circular arc answered is 36 °, and torque pole iron core teeth T2 and the central angle of circular arc corresponding to the iron core teeth B1 of suspension pole are
27 °, as shown in Figure 3.
Fig. 4 is the magnetic flux path figure that permanent magnet 3 is biased when 12/10 bearing-free permanent magnet biased witch reluctance motor works, often
Two connected biasing permanent magnets 3 of a torque pole iron core 2 are one group, magnetic circuit from one of pole N for biasing permanent magnet through
Cross the suspension pole iron core 1 close to the pole biasing permanent magnet N, the first air gap 10, rotor core 5, axis, using inclined close to another
The pole S of the biasing permanent magnet is returned to after setting the suspension pole iron core of permanent magnet S pole, then goes out to be sent back to from the pole N of the biasing permanent magnet
The pole S of previous biasing permanent magnet, forms the closed circuit of 1/4 circle, provides permanent magnet bias magnetic field.
Fig. 5 is magnetic flux path figure when suspension pole iron core 1 works in 12/10 bearing-free permanent magnet biased witch reluctance motor,
Two 7 concatenated suspension pole iron cores 1 of suspension pole winding coil will form Equivalent Magnetic Field after being powered, and wherein magnetic circuit will be by being equivalent to N
The suspension pole iron core 1 of pole sets out, and by the first air gap 10, rotor core 5, axis 6 is equivalent to the suspension pole iron core 1 of the pole S, logical
1 yoke portion of suspension pole iron core is crossed, interstice 9 forms 1/2 closed circle magnetic field.Suspension pole iron core 1, torque pole iron core 2 is by leading
It is built up after magnetic good punching silicon-steel.
Fig. 6 be 12/10 bearing-free permanent magnet biased witch reluctance motor in torque moment permanent-magnet body 4 torque pole winding coil 8 not
Magnetic flux path figure when energization, each torque moment permanent-magnet body 4 is from the pole N, by the tooth of the torque pole iron core 2 close to the pole N, torque pole
The yoke portion of iron core 2,2 tooth of torque pole iron core close to the pole S, returns to the pole S of torque moment permanent-magnet body 4, forms the closed circuit of 1/4 circle.
Fig. 7 is that torque turns around the magnetic flux path figure of pole group coil 8 in 12/10 bearing-free permanent magnet biased witch reluctance motor
The T1 of moment pole iron core 2, T2, T1 ', the torque winding coil 8 of T2 ' is connected, T3, T4, T3 ', the torque winding coil 8 of T4 ' is connected,
Two groups of coils circuit sequentially energization, are T1, T2, T1 in figure ', the magnetic flux path that the torque winding coil 8 of T2 ' is formed when being powered
Figure, after coil is powered, torque pole iron core 2 forms Equivalent Magnetic Field, and magnetic circuit as shown in Figure 7 is by being equivalent to 2 tooth of torque pole iron core of the pole N
It sets out, by the first air gap 10, rotor core 5 returns to its adjacent 2 tooth of torque pole iron core for being equivalent to the pole S, then passes through torque
Iron core 2 yoke portion in pole forms closed circuit.
When Fig. 8 is that torque is powered around pole group coil 8 in 12/10 bearing-free permanent magnet biased witch reluctance motor, torque moment permanent-magnet
8 magnetic flux path figure of body 4 and torque pole winding coil, the magnetic flux path that torque pole winding coil 8 generates is consistent with Fig. 7, and torque is forever
The magnetic circuit of magnet 4 is from the pole N, by 2 tooth of torque pole iron core close to the pole N, the first air gap 10, rotor 5, close to the pole S
Iron core 2 tooth in torque pole returns to the pole S of torque moment permanent-magnet body 4, forms the closed circuit of 1/4 circle, increases the magnetic field of torque pole, thus
Improve torque.
Axis 6 used in above-mentioned technical proposal is made of the good material of magnetic property, such as electrical pure iron, 40Cr, various carbon
The materials such as plain steel.Rotor core 5 can with the good electric thin steel sheet of magnetic property for example electrical pure iron, electrical steel plate DR510,
The magnetic materials punching press such as DR470, DW350,1J50 and 1J79 folds.The polar arc of the tooth of suspension pole iron core 1, which is equal to, to be turned
The pole span of sub- iron core 5.Suspension pole iron core 1 and torque pole iron core 2 are made of the good material of magnetic property, as electrician is pure
Iron, 40Cr, silicon steel.The material for biasing permanent magnet 3 is the good rare-earth permanent magnet of magnetic property or ferrite permanent magnet, is hexahedron
Structure, one of face are arcuate surface, other five faces are plane, and magnetizing direction is biasing permanent magnet arc surface both ends straight line
Vertical line direction.Torque moment permanent-magnet body 4 is cuboid, and magnetizing direction is the face both ends straight line that torque moment permanent-magnet body is embedded in torque pole iron core 2
Vertical line direction.Suspension pole winding coil 7, torque pole winding coil 8 can use paint-dipping drying after the electromagnetic wire coiling of well conducting
It forms.In addition, suspension pole winding coil 7 and torque pole winding coil 8 are preferably centralization.
Above-mentioned 12/10 structure bearing-free permanent magnet biased witch reluctance motor solves outstanding by biasing permanent magnet and air gap
The coupling of floating pole and torque pole, and electromagnetic torque is increased by torque moment permanent-magnet body, improve torque density.
It is above that certain exemplary embodiments of the invention are only described by way of explanation, undoubtedly, for ability
The those of ordinary skill in domain without departing from the spirit and scope of the present invention can be with a variety of different modes to institute
The embodiment of description is modified.Therefore, above-mentioned attached drawing and description are regarded as illustrative in nature, and should not be construed as to the present invention
The limitation of claims.
Claims (7)
1. a kind of 12/10 bearing-free permanent magnet biased witch reluctance motor, it is characterised in that: by four suspension pole iron cores (1), four
Torque pole iron core (2), eight biasing permanent magnets (3), four torque moment permanent-magnet bodies (4), a rotor core (5), an axis (6),
Four suspension pole winding coils (7), eight torque pole winding coil (8) compositions, biasing permanent magnet (3) are embedded in suspension pole iron core
(1) between torque pole iron core (2), torque moment permanent-magnet body (4) is embedded on the tooth of torque pole iron core, and biasing permanent magnet (3) is six
Face body structure, one of face are arcuate surface, other five faces are plane, and there are two side and suspension pole iron core (1) and torques
The side of pole iron core (2) is connected, and there are two teeth on each torque pole iron core (2)；Torque moment permanent-magnet body (4) is cuboid, is embedded in
Between two teeth of torque pole iron core (2), there are interstice (9), suspension pole iron between suspension pole iron core and torque pole iron core
It is wound with suspension pole winding coil (7) on core (1), is wound with torque pole winding coil (8) on torque pole iron core (2) each tooth；Each
The central angle of circular arc between the tooth of the tooth of suspension pole iron core (1) torque pole iron core (2) adjacent thereto is 27 °, each torque
The central angle of circular arc between two teeth of pole iron core (2) is 36 °；The inside of suspension pole iron core (1) and torque pole iron core (2) is
Rotor core (5), the inside of rotor core (5) are axis (6)；Suspension pole iron core (1), torque pole iron core (2) and rotor core (5)
Between there are the first air gap (10).
2. 12/10 bearing-free permanent magnet biased witch reluctance motor according to claim 1, which is characterized in that the suspension
Pole iron core (1) and torque pole iron core (2) are made of the good material of magnetic property, such as electrical pure iron, 40Cr, silicon steel.
3. 12/10 bearing-free permanent magnet biased witch reluctance motor according to claim 1, which is characterized in that the suspension
Pole winding coil (7) and torque pole winding coil (8) are centralization.
4. 12/10 bearing-free permanent magnet biased witch reluctance motor according to claim 1, which is characterized in that the suspension
The polar arc of the tooth of pole iron core (1) is equal to the pole span of rotor core (5).
5. 12/10 bearing-free permanent magnet biased witch reluctance motor according to claim 1, which is characterized in that the biasing
The magnetizing direction of permanent magnet (3) is the vertical line direction of permanent magnet arc surface both ends straight line.
6. 12/10 bearing-free permanent magnet biased witch reluctance motor according to claim 1, which is characterized in that the torque
The magnetizing direction of permanent magnet (4) is the vertical line direction for being embedded in the permanent magnet two sides of torque pole iron core (2).
7. 12/10 bearing-free permanent magnet biased witch reluctance motor according to claim 1, which is characterized in that the axis (6)
It is made of the good material of magnetic property, such as electrical pure iron or 40Cr.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811064460.5A CN109217594B (en) | 2018-09-12 | 2018-09-12 | 12/10 bearingless permanent magnet bias switched reluctance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811064460.5A CN109217594B (en) | 2018-09-12 | 2018-09-12 | 12/10 bearingless permanent magnet bias switched reluctance motor |
Publications (2)
| Publication Number | Publication Date |
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| CN109217594A true CN109217594A (en) | 2019-01-15 |
| CN109217594B CN109217594B (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811064460.5A Active CN109217594B (en) | 2018-09-12 | 2018-09-12 | 12/10 bearingless permanent magnet bias switched reluctance motor |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010137766A1 (en) * | 2009-05-28 | 2010-12-02 | Kyungsung University Industry Cooperation Foundation | Hybrid pole bearingless srm |
| CN105226894A (en) * | 2015-10-30 | 2016-01-06 | 赵明珍 | U-shaped stator permanent magnet switched reluctance machines |
| CN106981966A (en) * | 2017-05-19 | 2017-07-25 | 北京航空航天大学 | A kind of permanent magnet bias bearing-free switch magnetic-resistance starting/generator |
-
2018
- 2018-09-12 CN CN201811064460.5A patent/CN109217594B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010137766A1 (en) * | 2009-05-28 | 2010-12-02 | Kyungsung University Industry Cooperation Foundation | Hybrid pole bearingless srm |
| CN105226894A (en) * | 2015-10-30 | 2016-01-06 | 赵明珍 | U-shaped stator permanent magnet switched reluctance machines |
| CN106981966A (en) * | 2017-05-19 | 2017-07-25 | 北京航空航天大学 | A kind of permanent magnet bias bearing-free switch magnetic-resistance starting/generator |
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| CN109217594B (en) | 2020-05-22 |
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