CN106787538A - Hybrid magnetic suspension motor - Google Patents
Hybrid magnetic suspension motor Download PDFInfo
- Publication number
- CN106787538A CN106787538A CN201710110758.4A CN201710110758A CN106787538A CN 106787538 A CN106787538 A CN 106787538A CN 201710110758 A CN201710110758 A CN 201710110758A CN 106787538 A CN106787538 A CN 106787538A
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- Prior art keywords
- motor
- radial
- rotor
- stator
- 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
-
- 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
- H02K1/278—Surface mounted magnets; Inset magnets
-
- 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)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
Hybrid magnetic suspension motor, including front and rear cover, frame, motor radial rotor, motor radial stator, motor axial rotor, motor axial stator, motor shaft, auxiliary bearing and detecting system.Motor radial rotor and axial rotor are arranged on rotor discs, rotor part inner sleeve machine shaft is by auxiliary bearing and the compact installation of motor body, end cap both sides are arranged on frame inner side, frame and the compact installation of front and rear cover equipped with motor axial direction stator winding, radial stator winding.Shaft position sensor, radial-direction position sensor and speed probe are provided with motor.Motor stator winding is by the way of simplex winding come controlled motor torque and radial suspension position stabilization.The present invention is realized rotor by magnetic levitation technology and is supported without abrasion without friction with the contactless of stator, is directly rotated by electromagnetic torque driving moment, shortens driving-chain, improves drive efficiency.The winding configuration of simplex winding is employed, electric machine structure is simplified, manufacturing cost is reduced, while electromagnetic torque is increased using the pattern of radial-axial bi-motor, with more preferable economic benefit and larger performance boost.
Description
Technical field
The present invention relates to a kind of new magnetic suspension motor, using magnetic suspension principle of induction, specific design one kind is hybrid
Magnetic suspension motor.
Background technology
Magnetic suspension motor is to use magnetic levitation technology to turn to stablize motor come the axial force and radial load of balance motor rotating shaft
Shaft position, constrains to substitute the mechanical constraint of traditional bearing by the magnetic force of electromagnetic force, realizes rotor contactless with stator
Without friction, supported without abrasion.Used as a kind of form of magnetic suspension motor, hybrid magnetic suspension motor is mixed using electromagnet and permanent magnet
Mode come reach reduce energy resource consumption effect.General magnetic suspension motor is suspended using double set windings, a set of winding control
Power balances the radial load of rotor, and a set of winding controlled motor torque realizes the suspension torque double control of motor with this.But
It is that its winding construction is relative complex, result in the raising of cost, and due to the mutual magnetic force interference of many set windings, can be to motor
Steady operating produce influence, to control requirement it is also of a relatively high.
The content of the invention
The invention discloses a kind of hybrid magnetic suspension motor, it is an object of the invention to provide a kind of new hybrid magnetic
Floatation electric motor structure and winding construction.Its purpose is to simplify magnetic suspension motor structure, simultaneously because employing radial axle
To the mode of bi-motor, motor torque is improve.Radial motor employs the winding method of simplex winding, reduces manufacturing cost,
Reduce control difficulty.
The present invention proposes a kind of hybrid magnetic suspension motor of use radial-axial bi-motor pattern, and its rotor is all
It is placed on rotor discs, its rotor is permanent magnet.Stator winding is respectively placed in annular framework surrounding and front and rear cover inner side, axially
Motor using disc type electric machine operation principle, simultaneously because axial direction electric machine stator winding is divided into before two same sections are respectively placed in
Rear end cap inner side, can by way of differential regulation both sides stator winding electrifying size of current come the axial force of balance motor with
This axial displacement to balance rotor.Its radial motor is by the way of single stator winding.Only carry out same time control using a set of winding
The torque of motor processed and radial suspension are controlled.Radial stator unit is arranged on annular framework, is divided into four arcses radial stator
Unit, contains three stator tooths on each stator unit, three-phase sequential electric current is passed through, while four arcses radial stator unit is
Symmetrical vertical is distributed, can be by way of differential regulation, and the differential size of current for changing confrontation unit balances electricity with this
The radial load of machine rotating shaft.Simultaneously because three-phase sequential electric current is passed through, while can be with controlled motor torque.
Motor body inside is equipped with detecting system, includes shaft position sensor, radial-direction position sensor and turns
Fast sensor, shaft position sensor is along the circumferential direction provided with end cap axial direction side, is along the circumferential direction pacified in end cap radial direction side
Equipped with radial-direction position sensor and speed probe.Signal data necessary to machine shaft stability contorting can be detected.Inspection
Device is surveyed to be arranged on the stator unit of correspondence position.
The stator unit of the motor is all salient-pole structure, and be along the circumferential direction equally spaced stator salient poles, in stator salient poles
Around equipped with winding.Its radial motor stator salient poles has 12, is divided into four arcses stator unit, on every section of circular arc stator unit
There are three stator salient poles, be passed through three-phase sequential electric current.Its axial stator salient pole is cutd open with radial stator salient pole distributing position in motor
Consistent on the direction of face, its number of salient poles is also consistent with radial stator salient pole.The rotor unit of axial direction electric machine and turning for radial motor
Subelement all uses permanent magnet, and its field structure is also consistent on motor profile direction.The present invention uses durface mounted permanent magnet body.Its
Radially there are four durface mounted permanent magnet bodies, its pole polarity is arranged in the way of N-S-N-S, and four durface mounted permanent magnet bodies equidistantly divide
Cloth.There are 8 durface mounted permanent magnet bodies its axial direction, each side 4, and magnetic pole arrangement mode is as radial rotor, and equidistant cloth
Put.12 permanent magnets axially and radially are divided into 3 groups, every group 4, are along the circumferential direction equally spaced.Magnetic pole distributing order is consistent,
And motor profile direction position consistency.
The stator winding of the motor radially one is having 12, is axially having 24, and every 3 of radial stator winding is divided into
One section of stator circular arc unit.Three-phase sequential electric current is passed through, 12, left side and 12, right side is divided axially into, with radial direction step mode one
Cause.The sequential electric current that its left and right sides is passed through is also consistent.
During present invention work, three-phase sequential electric current is passed through, according to the rotor current angle position θ that detection means is fed back, can be with
Ensure the torque output of radial motor and axial direction electric machine.For radial motor, according to the radial deflection X, the Y that detect, lead to
The size of current that differential change four arcses stator unit is passed through is crossed, changes its X, the magnetic flux of Y-direction produces X, Y-direction
Electromagnetic force, be used to balance the radial load of rotor, rotor is reached a balance in radial position, stabilize it radial suspension.
For axial direction electric machine, according to detecting axial dipole field Z, the electric current being passed through by differential change both sides axial stator unit
Size, can produce the electromagnetic force to side, be used to balance the axial force of rotor, rotor is reached one in axial location and put down
Weighing apparatus, stabilizes it axial suspension.By radial motor and the synergy of axial direction electric machine, with the torque of controlled motor and it can be made
Suspended completely with reaching in radial and axial stable suspersion.
Brief description of the drawings
Fig. 1 is hybrid magnetic suspension motor structure chart；
In figure：1- drive end bearing brackets；2- motor radial stators；3- axial stator fixing devices；4- machine shafts；5- frames；6- rear ends
Lid；7- motor axial rotors；8- motor axial stators；9- aiding supports；10- motor radial rotors；
Fig. 2 is radial motor winding magnetic pole distribution schematic diagram.
Specific embodiment
Referring to Fig. 1, motor includes drive end bearing bracket 1, rear end cap 6, motor radial rotor 10, motor radial stator 2, motor axial direction
Rotor 7, motor axial stator 8, machine shaft 4, aiding support 9, frame 5, axial stator fixing device 3.Rotor discs inner sleeve
Machine shaft, the radially installed of rotor discs has radial rotor, and radial rotor uses four durface mounted permanent magnet bodies, its adjacent pole
Opposite polarity, arrangement mode is N-S-N-S, and axial rotor is divided into mounted in rotor discs axial direction both sides.Each four surface-mount types in left and right
Permanent magnet, its adjacent pole opposite polarity, arrangement mode is N-S-N-S, and 12 durface mounted permanent magnet bodies are amounted on rotor discs.Footpath
It is arranged in frame to motor stator, using the structure of electronics salient pole, 4 groups of 12 stator salient poles, every group of 3 salient stators altogether
Pole, is divided into four arcses radial stator unit, vertical symmetry distribution, three of between every section of circular arc radial stator unit and inside
Stator tooth is all equally spaced, as shown in Figure 2.Axial stator unit is consolidated axial stator winding by axial stator fixing device
It is scheduled on front and rear cover.Left and right sides axial stator unit is symmetrical, and its winding method is consistent with radial motor stator winding mode
To facilitate driving torque.The drive control of motor of the present invention is consistent with common electric machine, according to the rotor angle location that detects and turns
Speed, controlled motor torque is played a part of by being passed through the three-phase current of different size and different sequential, is characterized in torque
Control is driven jointly by the way of radial and axial bi-motor, and motor torque is bigger, and the performance of motor is improved.
The suspension control of machine shaft of the invention is in the following way：The present invention uses the winding method of simplex winding,
On the premise of motor torque has been guaranteed.For radial motor, as a result of the shape of four arcses stator winding unit
Formula, is divided into x, two pairs, y directions, the radial displacement deviation that is detected according to shaft position sensor and rotor-position sensor and turns
Sub- current angle position, the size that can be passed through three-phase sequential electric current with the differential symmetrical circular arc unit of change is close to change magnetic flux
Degree, produces magnetic pull to cause that rotor returns to radial equilibrium position.For axial direction electric machine, because only that the deviation of one degree of freedom
Need it to control, that is, only need to control axial offset deviation, can be inclined according to the axial displacement obtained by shaft position sensor
Difference carrys out the size of current that is passed through of differential changes left and right sides axial stator unit winding to produce magnetic drawing to the left or to the right
Power makes the machine shaft return to its longitudinal balance position, controls by the radial suspension of radial motor and axial suspension control to protect
Demonstrate,prove the suspension completely of machine shaft.
The specific control mode of direct torque is as described below：Stator unit of the invention and rotor unit are in motor section
It is consistent on direction, so its direct torque mode is considered as shown in Fig. 2 stator winding is by A, B, C three-phase windings composition,
Using short distance winding, it is made up of four coils per phase winding, wherein, A phase windings are made up of A1, A2, A3, A4 coil；B
Phase winding is made up of B1, B2, B3, B4 coil；C phase windings are made up of C1, C2, C3, C4 coil, altogether 12 coils, this
12 coils are distributed in clockwise according to the direction of A1 → B1 → C1 → A2 → B2 → C2 → A3 → B3 → C3 → A4 → B4 → C4
On corresponding stator tooth, each coil is independently-powered.The winding arrangement tone of axial stator winding is consistent.Turned by detection
The data such as the Angle Position of son, the torque rotary speed according to setting, are passed through the three-phase current of different size of current difference sequential.Work as rotor
Angle Position A phases in 0 ° ~ 15 °, 90 ° ~ 105 °, 180 ° ~ 195 °, 270 ° ~ 285 ° are powered, 15 ° ~ 30 °, 105 ° ~ 120 °, 195 ° ~
210 °, 285 ° ~ 290 ° when AB simultaneously be powered, 30 ° ~ 45 °, 120 ° ~ 135 °, 210 ° ~ 225 °, 300 ° ~ 315 ° when B phases be powered, 45 °
~ 60 °, 135 ° ~ 150 °, 225 ° ~ 240 °, 315 ° ~ 330 ° when BC simultaneously be powered, 60 ° ~ 75 °, 150 ° ~ 165 °, 240 ° ~ 255 °,
C phases are powered at 330 ° ~ 345 °, 75 ° ~ 90 °, 165 ° ~ 180 °, 255 ° ~ 270 °, 345 ° ~ 360 ° when CA simultaneously be powered.Axial direction electric machine
Similarly.So can just realize direct torque of the invention.
The specific control mode for controlling that suspends is as described below：Radial and axial totally the 6 of the machine shaft to be realized of the present invention
The control of suspension completely of the individual free degree, it radially one has 4 frees degree, is set to X, and Y-direction, its axial direction one has 2 freedom
Degree, is set to Z-direction.For radial suspension control, due to the winding method present invention employs simplex winding, its torque and suspension are altogether
With a winding, there is four arcses stator unit on radial stator winding, vertical symmetry distribution, 12 stator tooths are being passed through three
Phase sequential electric current ensures on the basis of motor torque the size of current of differential regulation relatively radially circular arc stator unit again, is come with this
Its X is produced, the magnetic pull in Y-direction makes its radial direction stable suspersion to balance the radial load of rotor.Due to the rotational band of motor shaft
The rotation of dynamic rotor, so needing to do phse conversion according to the current Angle Position of rotor to reach stable suspersion control
Purpose, according to the air-gap separation that radial displacement transducer is detected（X, the component of Y-direction）Calculated through PID controller given
Suspending power set-point FxAnd F *y*, it is being F by phse conversionx, Fy, its specific mapping mode enters shown in table 1.
According to the F after conversionx, FY,The size of current of differential regulation needed for being calculated by PID controlleri x ,i Y, Specifically
Differential regulative mode is as described below：i A Pass throughi x Differential regulation outputi A1 =i A +i x ,i A3 =i A -i x , pass throughi y Differential regulation it is defeated
Go outi A2 =i A +i y ,i A4 =i A -i y 。i B Pass throughi x Differential regulation outputi B1 =i B +i x ,i B3 =i B -i x , pass throughi y Differential regulation it is defeated
Go outi B2 =i B +i y ,i B4 =i B -i y 。i C Pass throughi x Differential regulation outputi C1 =i C +i x ,i C3 =i C -i x , pass throughi y Differential regulation it is defeated
Go outi C2 =i C +i y ,i C4 =i C -i y .Amount to outputi A1 ,i A2 ,i A3 ,i A4 ,i B1 ,i B2 ,i B3 ,i B4 ,i C1 ,i C2 ,i C3 ,i C4 Altogether 12 groups electricity
Stream.It is respectively outputted to four circular arc stators of correspondence and amounts to 12 phase coil winding A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4
On.Thus can reach the purpose of radial suspension control.For axial suspension control, axial stator unit is being passed through three-phase current
It is consistent with radial stator unit in sequential.When axial displacement generation deviation is detected, according to detected axial position
Deviation z is moved, there is PID controller to calculate required suspending power set-point Fz, then the differential regulation needed for PID controller is calculated
Size of currenti z , the electric current that is passed through to two ends axial direction stator unit winding carries out differential regulation.
Axial suspension control is realized with this.The control that suspends completely is reached by comprehensive suspension control axially and radially,
Thus can reach the purpose of the present invention.
Claims (6)
1. a kind of hybrid magnetic suspension motor, including drive end bearing bracket（1）, rear end cap（6）, motor shaft（4）, frame（5）, frame（5）
Front and back end is respectively provided with the drive end bearing bracket（1）, rear end cap（6）, motor shaft（4）Through the center of rotor, it is characterized in that, if
There is motor radial rotor（10）, motor radial stator（2）, motor axial rotor（7）, motor axial stator（8）；Rotor is justified
Disk is radially arranged the motor radial rotor（10）, rotor discs axial direction both sides are respectively provided with motor axial rotor（7）, motor shaft
To rotor（7）Positioned at motor radial rotor（10）Both sides, motor radial rotor（10）Radial outside sets motor radial stator
（2）, motor radial stator（2）It is arranged on frame（5）On inner peripheral surface；Motor axial rotor（7）Axial outer ring sets motor shaft
To stator（3）, motor axial stator（3）It is separately positioned on drive end bearing bracket（1）, rear end cap（6）On, motor axial stator（3）With electricity
Machine axial rotor（7）With one heart and maintain gap；Shaft position sensor is provided with motor, radial-direction position sensor and rotating speed are passed
Sensor.
2. a kind of hybrid magnetic suspension motor according to claim 1, it is characterized in that, the front and rear cover（1、6）And
Frame（5）Be assembled motor body, frame（5）It is loop configuration, by stator fixing apparatus（3）Respectively by axial stator
（8）Installed in forward and backward end cap（1、6）Inner side.
3. a kind of hybrid magnetic suspension motor according to claim 1, it is characterized in that, the motor axial stator（8）With
Radial stator（8）All it is salient-pole structure, axial stator（8）And radial stator（8）It is and be circumferentially divided into four arcses stator
Unit, has three stator tooths, around equipped with a set of on every section of the three of circular arc stator unit stator tooths on every section of circular arc stator unit
Three-phase windings, winding configuration is cage winding, and the phase winding correspondence of same circular arc stator unit is connected with one group and chronologically changes
Current output unit；The direct torque of radial motor is realized with this, while four arcses stator unit Symmetrical vertical two-by-two
Distribution, can carry out differential regulation to it, increase one end electric current of its symmetrical cell, and other end electric current reduces, the footpath of generation
Balanced each other with rotor radial power to power, make rotor suspension in its centre of gyration；Motor radial rotor（10）With motor axial rotor
（7）All use permanent magnet.
4. a kind of hybrid magnetic suspension motor according to claim 1, it is characterized in that, motor torque is controlled by radial motor
With axial direction electric machine co- controlling, winding is passed through by the three-phase current for controlling to produce sequential consistent, turns its co- controlling motor
Square；The suspending power control of its machine shaft radial deflection is controlled by the radial motor of differential regulation simplex winding form；Axially turn
Subelement is symmetrical, come the axial displacement of balance motor rotating shaft by way of differential regulation, is suspended in rotor axial
Equilbrium position；Its axial dipole field is passed through the differential regulative mode of size of current to control electricity by axial direction electric machine both sides stator unit
The stabilization of machine rotating shaft axial direction.
5. a kind of hybrid magnetic suspension motor according to claim 1, it is characterized in that, it is characterized in that, motor shaft（4）Two ends
By aiding support（9）It is connected with motor body.Rotor part inner sleeve machine shaft passes through auxiliary bearing and motor body
Compact installation.
6. a kind of hybrid magnetic suspension motor according to claim 1, it is characterized in that, it is characterized in that, in end cap axial direction side
The shaft position sensor is along the circumferential direction installed, being along the circumferential direction provided with the radial position in end cap radial direction side passes
Sensor and the speed probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710110758.4A CN106787538B (en) | 2017-02-28 | 2017-02-28 | Hybrid magnetic suspension motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710110758.4A CN106787538B (en) | 2017-02-28 | 2017-02-28 | Hybrid magnetic suspension motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106787538A true CN106787538A (en) | 2017-05-31 |
| CN106787538B CN106787538B (en) | 2019-05-03 |
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ID=58959550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710110758.4A Active CN106787538B (en) | 2017-02-28 | 2017-02-28 | Hybrid magnetic suspension motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN106787538B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108955596A (en) * | 2018-08-13 | 2018-12-07 | 珠海格力电器股份有限公司 | BEARING SHAFT position monitoring method, device and control device |
| CN109038990A (en) * | 2018-08-21 | 2018-12-18 | 山东大学 | High torque density error-tolerance type mixing magnetic flow permanent magnet motor |
| WO2021189834A1 (en) * | 2020-03-24 | 2021-09-30 | 珠海格力电器股份有限公司 | Detection method and apparatus for magnetic levitation system, storage medium, and processor |
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| CN101119047A (en) * | 2007-07-25 | 2008-02-06 | 上海大学 | High temperature superconducting magnetic suspension frequency conversion electric motor |
| CN101771308A (en) * | 2008-12-31 | 2010-07-07 | 张玉宝 | Magnetic levitation rotor support system, magnetic levitation bearing and magnetic biasing weight reducing device |
| CN101769334A (en) * | 2008-12-31 | 2010-07-07 | 张玉宝 | Single degree of freedom magnetic suspension rotor support system as well as magnetic bearing and weight losing method |
| CN103441630A (en) * | 2013-06-20 | 2013-12-11 | 南京航空航天大学 | Three-freedom-degree magnetic levitation switch reluctance motor of 12/4 pole structure |
| CN103490572A (en) * | 2013-05-28 | 2014-01-01 | 南京航空航天大学 | Three-degree-of-freedom magnetic suspension switch reluctance motor |
| CN104993637A (en) * | 2015-07-24 | 2015-10-21 | 扬州大学 | Magnetic levitation induction motor electric bicycle driving system |
| CN204858842U (en) * | 2015-07-24 | 2015-12-09 | 扬州大学 | Magnetic suspension induction machine drive formula electric bicycle |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101119047A (en) * | 2007-07-25 | 2008-02-06 | 上海大学 | High temperature superconducting magnetic suspension frequency conversion electric motor |
| CN101771308A (en) * | 2008-12-31 | 2010-07-07 | 张玉宝 | Magnetic levitation rotor support system, magnetic levitation bearing and magnetic biasing weight reducing device |
| CN101769334A (en) * | 2008-12-31 | 2010-07-07 | 张玉宝 | Single degree of freedom magnetic suspension rotor support system as well as magnetic bearing and weight losing method |
| CN103490572A (en) * | 2013-05-28 | 2014-01-01 | 南京航空航天大学 | Three-degree-of-freedom magnetic suspension switch reluctance motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108955596A (en) * | 2018-08-13 | 2018-12-07 | 珠海格力电器股份有限公司 | BEARING SHAFT position monitoring method, device and control device |
| CN109038990A (en) * | 2018-08-21 | 2018-12-18 | 山东大学 | High torque density error-tolerance type mixing magnetic flow permanent magnet motor |
| WO2021189834A1 (en) * | 2020-03-24 | 2021-09-30 | 珠海格力电器股份有限公司 | Detection method and apparatus for magnetic levitation system, storage medium, and processor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106787538B (en) | 2019-05-03 |
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