CN105305751B - Bimorph transducer bearing-free five-phase brushless DC motor - Google Patents
Bimorph transducer bearing-free five-phase brushless DC motor Download PDFInfo
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- CN105305751B CN105305751B CN201510820126.8A CN201510820126A CN105305751B CN 105305751 B CN105305751 B CN 105305751B CN 201510820126 A CN201510820126 A CN 201510820126A CN 105305751 B CN105305751 B CN 105305751B
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Abstract
The present invention discloses a kind of bimorph transducer bearing-free five-phase brushless DC motor, external stator yoke, rotor core are concentric from outside to inside nested with internal stator magnet yoke, along the circumferential direction uniformly it is fixed with external stator yoke inner peripheral surface on 10 armature tooths and 10 fault-tolerant teeths of interlaced arrangement, armature tooth and is wound with five phase torque windings；It is evenly distributed with the outer surface of rotor core on 18 extremely outer permanent magnets, rotor core inner surface and is uniformly distributed 4 extremely interior permanent magnets, is along the circumferential direction uniformly fixed on internal stator magnet yoke outer circumference surface on 6 inner stator teeth, inner stator tooth and be wound with levitation force winding；Torque winding, outer permanent magnet, rotor collective effect realize that motor rotates, levitation force winding, interior permanent magnet, rotor collective effect realize that rotor stability suspends, torque winding and levitation force winding are independently controlled, have between levitation force winding and torque winding from Decoupling Characteristics, enhance radial suspension ability and improve the dynamic and static performance of Suspension Subsystem and torque subsystem.
Description
Technical field
The invention belongs to machine field, and in particular to a kind of bimorph transducer bearing-free five-phase brushless DC motor, it is adaptable to navigate
Empty space flight, nuclear power station, electric automobile etc. require the application field of high reliability.
Background technology
By torque winding and the common lap wound of levitation force winding on the stator teeth, torque winding is real for DC motor without bearing and brush
Existing motor rotation, levitation force winding produces radial suspension force, realizes that rotor stability suspends.The motor is provided simultaneously with brushless dc
Both machine and magnetic bearing function, have the advantages that magnetic bearing high speed, high accuracy, long lifespan, without lubrication and seal.And it is this
The problem of DC motor without bearing and brush is present mainly has：The magnetic field interaction that levitation force winding and torque winding are produced, compared with
Difficulty realizes being effectively decoupled between suspending power and torque；Because current of electric is square wave direct current, the coordinate transform control of conventional motors
Method processed is difficult to apply in DC motor without bearing and brush.
It is traditional bimorph transducer three-phase motor with permanent magnets with the closest electric machine structure of the technology of the present invention, bimorph transducer three-phase is forever
Magneto is restricted its fault freedom due to the inherent characteristic of interior permanent magnets, particularly caused by short circuit in winding failure
Temperature rise the problems such as, serious systematic failure will be caused.For common three phase electric machine, polyphase machine has many excellent
Point, first, polyphase machine can provide bigger power output, can not only there is smaller electric current in identical power output,
And big power capacity for it is fault-tolerant when operation provide safeguard.Secondly, the space mmf harmonics produced by fundamental current subtract
It is small, the torque pulsation of motor is reduced, the noise thus brought is also reduced.
The content of the invention
The invention aims to further improve DC motor without bearing and brush service behaviour, realize suspending power around
Automatic decoupling between group and torque winding, improves the fault-tolerant ability of motor, and the present invention is proposed with very high fault freedom, reality
Existing electricity, magnetic, heat, a kind of bimorph transducer bearing-free five-phase brushless DC motor of isolation physically, with a certain phase or a few phases
It can guarantee that remaining non-faulting is connected when breaking down and continue service ability.
To achieve the above object, the present invention is adopted the following technical scheme that：The present invention is by external stator yoke, fault-tolerant teeth, armature
Tooth, outer permanent magnet, rotor core, every magnetic aluminium ring, interior permanent magnet, inner stator tooth, internal stator magnet yoke, torque winding and suspending power around
Group composition, external stator yoke, rotor core are concentric from outside to inside nested with internal stator magnet yoke three, external stator yoke inner periphery
Along the circumferential direction uniformly be fixed with face on 10 armature tooths and 10 fault-tolerant teeths of interlaced arrangement, armature tooth be wound with A, B,
The phase torque winding of C, D, E five, is wound on 1 armature tooth per phase winding；18 are evenly distributed with the outer surface of rotor core extremely outer
Permanent magnet, 18 extremely outer permanent magnet head and the tail are fixedly connected, and are magnetized by radial direction and the extremely interlaced arrangement of N, S, rotor core
In the middle of fixation be embedded with every magnetic aluminium ring；4 extremely interior permanent magnets are uniformly distributed on rotor core inner surface, 4 extremely interior permanent magnets are by N, S
Order is distributed and magnetized by radial direction along clockwise direction, along the circumferential direction uniform fixed on internal stator magnet yoke outer circumference surface
Levitation force winding is wound with 6 inner stator teeth, inner stator tooth；There is radial direction outer gas between armature tooth, fault-tolerant teeth and outer permanent magnet
, there is the inside air gap in footpath between inner stator tooth and interior permanent magnet in gap.
Further, it is separated by 30 ° between two neighboring interior permanent magnet, radian shared by per extremely interior permanent magnet is 60 °.
Further, it is made up of per phase torque winding 2 coils, totally 10 coils press (A+) → (D-) → (B+) → (E-)
→ (C+) → (A-) → (D+) → (B-) → (E+) → (C-) is distributed on armature tooth in the counterclockwise direction successively；Torque winding 4
Linked using star, using five phase H bridge type of drive, during motor normal work, the rotate counterclockwise of rotor core 7, a period of time in office
Quarter has four phase torque windings 4 to be powered simultaneously, is 144 ° per phase conduction time：Work as rotor angle locationθAt -18 ° ~ 18 °, conducting
Bridge arm under bridge arm in B, C phase of H bridges, conducting D, E phase；WhenθAt 18 ° ~ 54 °, bridge arm in conducting B, C phase turns on bridge under A, E phase
Arm；WhenθAt 54 ° ~ 90 °, bridge arm in conducting C, D phase turns on bridge arm under A, E phase；WhenθAt 90 ° ~ 126 °, in conducting C, D phase
Bridge arm under bridge arm, conducting A, B phase；WhenθAt 126 ° ~ 162 °, bridge arm in conducting D, E phase turns on bridge arm under A, B phase；Whenθ
At 162 ° ~ 198 °, bridge arm in conducting D, E phase turns on bridge arm under B, C phase；WhenθAt 198 ° ~ 234 °, bridge arm in conducting A, E phase,
Turn on bridge arm under B, C phase；WhenθAt 234 ° ~ 270 °, bridge arm in conducting A, E phase turns on bridge arm under C, D phase；Whenθ270 ° ~
At 306 °, bridge arm in conducting A, B phase turns on bridge arm under C, D phase；WhenθAt 306 ° ~ 342 °, bridge arm in conducting A, B phase, conducting
Bridge arm under D, E phase.
The advantage of the invention is that：
1st, in the present invention torque winding, outer permanent magnet, rotor collective effect, realize that motor rotates, levitation force winding, interior
Permanent magnet, rotor collective effect, realize that rotor stability suspends, torque winding and levitation force winding are independently controlled, in structure
On realize between levitation force winding and torque winding have from Decoupling Characteristics, in the absence of restricting each other, so as to enhance radially outstanding
I and the dynamic and static performance for improving Suspension Subsystem and torque subsystem.
2nd, external stator torque winding uses polyphase machine structure, and armature tooth is not wide with fault-tolerant teeth, it is easy to accomplish 144 ° are put down
The fault-tolerant teeth pushed up between the back-emf of ripple, each phase armature winding serves buffer action, can not only make every by fault-tolerant teeth shape
Into the closed magnetic circuit of oneself, it is achieved thereby that Magnetic isolation, also avoids heat exchange between phase and phase to a certain extent, it is real
Show and be thermally isolated, when short circuit or open fault occur for a phase winding, the adverse effect to the generation of other phase windings diminishes and can
To realize normal rotation by faults-tolerant control, the moment heat that is produced to it of fault-tolerant teeth without winding has buffer action, real
Show and be thermally isolated, improved the efficiency of motor, reduce temperature rise.
3rd, levitation force winding uses the three-phase structure similar to common electric machine, is driven with three-phase inverter, and a, b, c phase three is certainly
It is adjustable by spending direction suspending power, it can provide and more accurately synthesize suspending power, and compared with power amplifier, three phase power inversion
Utensil has the advantages that small volume, cost be low, power attenuation is low.
Brief description of the drawings
The present invention is described in further details with reference to the accompanying drawings and detailed description.
Fig. 1 is the radial structure schematic diagram of bimorph transducer bearing-free five-phase brushless DC motor of the present invention；
Fig. 2 is the energization timing diagram of five phase torque windings in Fig. 1；
Fig. 3 is five phase torque winding magnetic potential figures in Fig. 1；
Fig. 4 is a phases, b phases, c phase three-phase levitation force winding energization timing diagrams in Fig. 1；
Fig. 5 is the interior permanent magnet magnetic line of force and three-phase levitation force winding energization electromagnetic force line schematic diagram in Fig. 1；
The phase diagram that suspending power is produced when Fig. 6 (a), (b), (c) they are a phases, b phases, the energization of c phases levitation force winding respectively, its
Middle Fig. 6 (a) is that a phases are positive current, and suspending power phase diagram when b, c phase are negative current, Fig. 6 (b) is that b phases are positive current, and a, c phase are
Suspending power phase during negative current, Fig. 6 (c) is that c phases are positive current, suspending power phase when a, b phase are negative current.
In figure：1-external stator yoke；2-fault-tolerant teeth；3-armature tooth；4-torque winding；5-air gap A；6-outer permanent magnetism
Body；7-rotor core；8-every magnetic aluminium ring；9-interior permanent magnet；10-air gap B；11-inner stator tooth；12-levitation force winding；
13-internal stator magnet yoke；14-levitation force winding energization magnetic line of force；15-interior permanent magnet magnetic the line of force.
Embodiment
Referring to Fig. 1, bimorph transducer bearing-free five-phase brushless DC motor of the present invention is by external stator yoke 1, fault-tolerant teeth 2, armature
Tooth 3, outer permanent magnet 6, rotor core 7, every magnetic aluminium ring 8, interior permanent magnet 9, inner stator tooth 11, internal stator magnet yoke 13, torque winding 4
Constituted with levitation force winding 12.External stator yoke 1, rotor core 7 and the three of internal stator magnet yoke 13 are concentric from outside to inside embedding
20 external stator teeth are along the circumferential direction uniformly fixed on set, the inner peripheral surface of external stator yoke 1,20 external stator teeth are by 10 armatures
Tooth 3 and 10 fault-tolerant teeths 2 are constituted, and have independent fault-tolerant teeth 2 per between phase armature tooth 3, armature tooth 3 and fault-tolerant teeth 2 are interlaced
Arrangement.Torque winding 4 is wound with armature tooth 3.
Outer permanent magnet 6 is 18 poles, and the extremely interlaced arrangement of N, S magnetizes by radial direction, the two of 18 extremely outer permanent magnets 6
Side head and the tail be fixedly connected, 18 extremely outer permanent magnets 6 are evenly distributed on the outer surface of rotor core 7, outer permanent magnet 6 with 20 outside calmly
There is radially outer air gap 5 between sub- tooth, the radial distance of outer air gap 5 is 0.5mm.Fixation is embedded with every magnetic in the middle of rotor core 7
Aluminium ring 8, every magnetic aluminium ring 8 by 7 points of two parts for inside and outside of rotor core, and is closely affixed between inner and outer rotors iron core 7.In rotor
4 extremely interior permanent magnets 9 are uniformly distributed on the inner surface of iron core 7, interior permanent magnet 9 magnetizes by radial direction, two neighboring interior permanent magnet 9
Between be separated by 30 °, be 60 ° per radian shared by extremely interior permanent magnet 9.It is along the circumferential direction uniform solid on the outer circumference surface of internal stator magnet yoke 13
Levitation force winding 12 is wound with fixed 6 inner stator teeth 11, inner stator tooth 11.There is footpath between inner stator tooth 11 and interior permanent magnet 9
Inside air gap 10, the radial distance of interior air gap 10 is 0.5mm.
Torque winding 4, outer permanent magnet 6, the collective effect of rotor core 7, realize motor rotate, levitation force winding 12, it is interior forever
Magnet 9, the collective effect of rotor core 7, realize that rotor stability suspends.
Torque winding 4 is using 20 grooves, the fault-tolerant toothing of the facewidth such as not, by the phase composition of A, B, C, D, E five, using fraction
Groove concentratred winding, is made up of, 10 coils totally per phase torque winding 42 coils, and coil presses (A+) → (D-) → (B+) → (E-)
→ (C+) → (A-) → (D+) → (B-) → (E+) → (C-) is distributed on armature tooth 3 in the counterclockwise direction successively.Torque winding 4
Using concentrating every tooth coiling, it is wound on per phase winding on 1 armature tooth 3, a fault-tolerant teeth 2, winding terminal is spaced between every phase winding
Portion is non-overlapping, and realization is thermally isolated.
Levitation force winding 12 is made up of a, b, c three-phase levitation force winding, is respectively separated 120 ° of space angles, using concentrate around
Group, is made up of, 6 coils totally per phase levitation force winding 12 2 coils, and levitation force winding 12 is 2 poles.Wherein, a phases suspending power around
Group is by coil a1、a2Composition, b phases levitation force winding is by coil b1、b2Composition, c phases levitation force winding is by coil c1、c2Composition.And
And 6 coils press coil a1→c1→b1→a2→c2→b2Order be distributed in the counterclockwise direction on inner stator tooth 11 successively.
By coil a1、a2Series connection, as a phase levitation force windings, by coil b1、b2Series connection, as b phase levitation force windings, by coil c1、c2
Series connection, is used as c phase levitation force windings.
18 extremely outer permanent magnets 6 are affixed on the outer surface of rotor core 7 by N, S sequence interval, 18 extremely outer permanent magnets 6 and torque around
4 collective effects of group, realize that motor rotates.4 extremely interior permanent magnets 9 magnetize by radial direction, and by N, S order along side clockwise
To the inner surface of rotor core 7 is affixed on, the 4 extremely interior collective effects of 9 and 2 pole levitation force winding of permanent magnet 12 realize that the stabilization of motor is hanged
It is floating.
Existing Double-stator motor structure, torque winding uses three-phase motor with permanent magnets, the torque of brshless DC motor substantially
Torque more than magneto, and five-phase brushless DC motor is more than three phase electric machine, same electric current, five-phase brushless DC motor
Torque dynamics of exerting oneself it is bigger, and in 360 ° of electrical angles that rotor is turned over, three-phase brushless dc motor is every 60 °
Electrical angle change once to, and five-phase brushless DC motor every 36 ° of electrical angles change once to, therefore its synthesize torque torque arteries and veins
Move smaller than three-phase brushless dc motor, and five-phase induction motor is easier to realize faults-tolerant control.Five phase torque windings 4 are used in the present invention
Star links, using five phase H bridge type of drive.During motor normal work, rotor rotate counterclockwise has four phases at any one time
Torque winding 4 is powered simultaneously, referring to Fig. 2, is 144 ° per phase conduction time, each phase current phase of A, B, C, D, E is differed successively
72 °, every 36 ° of electrical angles just change once to.Referring to Fig. 3, wherein A, B, C, D, E direction is magnetic potential when each phase is individually powered
Direction,F AB/CDComposite magnetic power direction when mutually being simultaneously turned on for A, B, C, D tetra-, and A, B phase are the conducting of upper bridge arm, under C, D phase are
Bridge arm is turned on, and the 10 kinds of combination conduction modes and composite magnetic power of four phase torque windings 4 are referring to Fig. 3, respectively magnetic potentialF AB/DE、F BC/DE、F BC/AE、F CD/AE、F CD/AB、F DE/AB、F DE/BC、F AE/BC、F AE/CD, form a circumference.The power-up sequence of torque winding 4 depends on
In rotor angle locationθ, keep perpendicular with rotor field according to armature mmf, produce the maximally effective principle of torque, work as rotor angle
PositionθAt -18 ° ~ 18 °, magnetic potential is selectedF BC/DEEffectively, then bridge arm under bridge arm in B, C phase, conducting D, E phase is turned on；WhenθAt 18 °
At ~ 54 °, magnetic potential is selectedF BC/AEEffectively, then bridge arm under bridge arm in B, C phase, conducting A, E phase is turned on；WhenθAt 54 ° ~ 90 °, selection
Magnetic potentialF CD/AEEffectively, then bridge arm under bridge arm in C, D phase, conducting A, E phase is turned on；WhenθAt 90 ° ~ 126 °, magnetic potential is selectedF CD/AB
Effectively, then bridge arm under bridge arm in C, D phase, conducting A, B phase is turned on；WhenθAt 126 ° ~ 162 °, magnetic potential is selectedF DE/ABEffectively, then lead
Bridge arm under bridge arm in logical D, E phase, conducting A, B phase；WhenθAt 162 ° ~ 198 °, magnetic potential is selectedF DE/BCEffectively, then in conducting D, E phase
Bridge arm under bridge arm, conducting B, C phase；WhenθAt 198 ° ~ 234 °, magnetic potential is selectedF AE/BCEffectively, then bridge arm in A, E phase, conducting are turned on
Bridge arm under B, C phase；WhenθAt 234 ° ~ 270 °, magnetic potential is selectedF AE/CDEffectively, then bridge under bridge arm in A, E phase, conducting C, D phase is turned on
Arm；WhenθAt 270 ° ~ 306 °, magnetic potential is selectedF AB/CDEffectively, then bridge arm under bridge arm in A, B phase, conducting C, D phase is turned on；Whenθ
At 306 ° ~ 342 °, magnetic potential is selectedF AB/DEEffectively, then bridge arm under bridge arm in A, B phase, conducting D, E phase is turned on.It is suitable according to this conducting
Sequence, then the composite magnetic power of torque winding 4 is in rotate counterclockwise, produces rotating torques, rotates motor.In order to form 144 ° of flat-tops
Trapezoidal wave back-emf, armature tooth 3 is not wide with fault-tolerant teeth 2, is separated per between phase torque winding 4 by fault-tolerant teeth 2, serves isolation
Effect, regulation fault-tolerant teeth 2 and each width of armature tooth 3, easily form the trapezoidal wave back-emf of 144 ° of flat-tops, can not only make every phase
By the formation of fault-tolerant teeth 2 closed magnetic circuit of oneself, it is achieved thereby that Magnetic isolation, is also avoided between phase and phase to a certain extent
Heat exchange, realize and be thermally isolated, realize brushless DC motor structure.Meanwhile, fault-tolerant teeth 2 can realize magnetic field, heat and
Physically approximate completely isolated, each phase can regard independent part as, when certain phase winding breaks down, cut away the phase,
By compensating other normal operations that motor mutually can be achieved.
Existing Double-stator motor structure, inner stator levitation force winding uses quaternary structure, is put using two differential powers
Big device driving.Inner stator levitation force winding 12 uses the three-phase structure similar to common electric machine in the present invention, using inverter driving
Dynamic, a, b, c phase Three Degree Of Freedom direction suspending power are adjustable, using the teaching of the invention it is possible to provide more accurately synthesize suspending power.During rotor suspension, three-phase
The power-up sequence of levitation force winding 12 depend on rotor eccentric position, if rotor center point toxAxle negative direction is offset, then is controlled outstanding
Buoyancy electric current is producedxThe suspending power of axle positive direction can be pulled it back to center.Levitation force winding 12 and torque winding 4 are mutual
Phase independent control, levitation force winding electric current differs 120 ° successively by a, b, c direction phase.Referring to Fig. 4, when a phase currents are forward direction
Maximum ua1When, b, c phase current are respectively negative sense ub1、uc1.When a phases levitation force winding, mode is powered as shown in Figure 5, then b, c phase electricity
Flow direction and Fig. 5 is in opposite direction.a1WithxAxle positive direction is in the same direction, if b1、c1Direction is respectively b, c phase positive direction, suspending power around
The energization magnetic line of force 14 and the interior permanent magnet magnetic line of force 15 are organized referring to Fig. 5 dotted lines,xAxle negative direction is magnetic field-enhanced,xAxle positive direction magnetic field subtracts
It is weak, while b, c backing field strengthen, positive direction field weakening.Relative to levitation force winding 12, rotor is outer rotor, so
ProducexAxle positive direction suspending powerF a, b, c positive direction suspending powerF b、F c, referring to Fig. 6 (a), suspending powerF aIt is more thanF bWithF c, by adjusting
A, b, c three-phase current is saved to changeF a、F b、F cThree-phase suspending power size, will be toxThe rotor of axle negative direction skew is returned to center.
Similarly referring to Fig. 6 (b), 6 (c), the suspending power that b phases, c phases levitation force winding are produced when leading to positive maximum current respectively is respectivelyF b、F c, along b, c-axis directional spreding, the suspension force direction produced when being conducted of levitation force winding three together decides on a plane,
Change the size of corresponding levitation force winding electric current, can occur in the controllable suspending power of size and Orientation in this plane, a, b, c tri-
Free degree direction is adjustable make it that the output of suspending power is more accurate, so that supporting rotor stable suspersion.
Claims (7)
1. a kind of bimorph transducer bearing-free five-phase brushless DC motor, it is characterized in that：By external stator yoke（1）, fault-tolerant teeth（2）, electricity
Armature tooth（3）, outer permanent magnet（6）, rotor core（7）, every magnetic aluminium ring（8）, interior permanent magnet（9）, inner stator tooth（11）, inner stator magnetic
Yoke（13）, torque winding（4）And levitation force winding（12）Composition, external stator yoke（1）, rotor core（7）And internal stator magnet yoke
（13）Three concentric nesting, external stator yoke from outside to inside（1）Mutual friendship is along the circumferential direction uniformly fixed with inner peripheral surface
10 armature tooths of mistake arrangement（3）With 10 fault-tolerant teeths（2）, armature tooth（3）On be wound with the phase torque winding of A, B, C, D, E five（4）,
1 armature tooth is wound on per phase winding（3）On；Rotor core（7）Outer surface on be evenly distributed with 18 extremely outer permanent magnets（6）, 18
Extremely outer permanent magnet（6）Head and the tail are fixedly connected, and are magnetized by radial direction and the extremely interlaced arrangement of N, S；Rotor core（7）In
Between fixation be embedded with every magnetic aluminium ring（8）；Rotor core（7）4 extremely interior permanent magnets are uniformly distributed on inner surface（9）, 4 extremely interior permanent magnets
（9）It is distributed and is magnetized by radial direction along clockwise direction by N, S order, internal stator magnet yoke（13）Along circle on outer circumference surface
Circumferential direction uniformly fixes 6 inner stator teeth（11）, inner stator tooth（11）On be wound with levitation force winding（12）；Armature tooth（3）, it is fault-tolerant
Tooth（2）With outer permanent magnet（6）Between there is radially outer air gap, inner stator tooth（11）With interior permanent magnet（9）Between to there is footpath inside
Air gap.
2. bimorph transducer bearing-free five-phase brushless DC motor according to claim 1, it is characterized in that：Two neighboring interior permanent magnet
（9）Between be separated by 30 °, per extremely interior permanent magnet（9）Shared radian is 60 °.
3. bimorph transducer bearing-free five-phase brushless DC motor according to claim 1, it is characterized in that：Per phase torque winding（4）
It is made up of 2 coils, totally 10 coils press A+ → D- → B+ → E- → C+ → A- → D+ → B- → E+ → C- successively along counterclockwise
Directional spreding is in armature tooth（3）On.
4. bimorph transducer bearing-free five-phase brushless DC motor according to claim 3, it is characterized in that：The torque winding（4）
Linked using star, using five phase H bridge type of drive, during motor normal work, rotor core（7）Rotate counterclockwise, any
There are four phase torque windings at moment（4）It is powered simultaneously, is 144 ° per phase conduction time.
5. bimorph transducer bearing-free five-phase brushless DC motor according to claim 4, it is characterized in that：Work as rotor angle locationθ-
At 18 ° ~ 18 °, bridge arm under bridge arm in B, C phase of H bridges, conducting D, E phase is turned on；WhenθAt 18 ° ~ 54 °, bridge in conducting B, C phase
Bridge arm under arm, conducting A, E phase；WhenθAt 54 ° ~ 90 °, bridge arm in conducting C, D phase turns on bridge arm under A, E phase；Whenθ90 ° ~
At 126 °, bridge arm in conducting C, D phase turns on bridge arm under A, B phase；WhenθAt 126 ° ~ 162 °, bridge arm in conducting D, E phase, conducting
Bridge arm under A, B phase；WhenθAt 162 ° ~ 198 °, bridge arm in conducting D, E phase turns on bridge arm under B, C phase；WhenθAt 198 ° ~ 234 °
When, turn on bridge arm under bridge arm in A, E phase, conducting B, C phase；WhenθAt 234 ° ~ 270 °, bridge arm in conducting A, E phase turns on C, D phase
Lower bridge arm；WhenθAt 270 ° ~ 306 °, bridge arm in conducting A, B phase turns on bridge arm under C, D phase；WhenθAt 306 ° ~ 342 °, conducting
Bridge arm under bridge arm in A, B phase, conducting D, E phase.
6. bimorph transducer bearing-free five-phase brushless DC motor according to claim 1, it is characterized in that：Levitation force winding（12）By
A, b, c three-phase levitation force winding are constituted, and are respectively separated 120 ° of space angles, per phase levitation force winding（12）It is made up of 2 coils.
7. bimorph transducer bearing-free five-phase brushless DC motor according to claim 1, it is characterized in that：Armature tooth（3）With it is fault-tolerant
Tooth（2）It is not wide.
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| CN201510820126.8A CN105305751B (en) | 2015-11-24 | 2015-11-24 | Bimorph transducer bearing-free five-phase brushless DC motor |
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| CN103618424A (en) * | 2013-12-02 | 2014-03-05 | 南京工程学院 | Double-stator magnetic suspension switch reluctance starting/power generation machine |
| CN103746611A (en) * | 2014-01-06 | 2014-04-23 | 南京工程学院 | Double-stator magnetic suspension switch magnetic resistance double-passage full-period power generator |
| CN104052219A (en) * | 2014-06-24 | 2014-09-17 | 江苏大学 | Magnetic suspension double-stator permanent magnetic wind generator |
| CN204231154U (en) * | 2014-08-05 | 2015-03-25 | 南京工程学院 | A kind of magnetic levitation switch magnetic resistance fly-wheel motor |
| CN205265494U (en) * | 2015-11-24 | 2016-05-25 | 江苏大学 | Two stators do not have five looks brushless DC motor on bearing |
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2015
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5296785A (en) * | 1991-12-23 | 1994-03-22 | Ford Motor Company | Fail-safe vehicle suspension system including switched reluctance motor |
| CN101847918A (en) * | 2009-03-24 | 2010-09-29 | 通用汽车环球科技运作公司 | Be used for optimized electric machine for smart actuators |
| CN103618424A (en) * | 2013-12-02 | 2014-03-05 | 南京工程学院 | Double-stator magnetic suspension switch reluctance starting/power generation machine |
| CN103746611A (en) * | 2014-01-06 | 2014-04-23 | 南京工程学院 | Double-stator magnetic suspension switch magnetic resistance double-passage full-period power generator |
| CN104052219A (en) * | 2014-06-24 | 2014-09-17 | 江苏大学 | Magnetic suspension double-stator permanent magnetic wind generator |
| CN204231154U (en) * | 2014-08-05 | 2015-03-25 | 南京工程学院 | A kind of magnetic levitation switch magnetic resistance fly-wheel motor |
| CN205265494U (en) * | 2015-11-24 | 2016-05-25 | 江苏大学 | Two stators do not have five looks brushless DC motor on bearing |
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