CN104184230B - A kind of highly reliable composite excitation fault-tolerant motor system - Google Patents
A kind of highly reliable composite excitation fault-tolerant motor system Download PDFInfo
- Publication number
- CN104184230B CN104184230B CN201410460766.8A CN201410460766A CN104184230B CN 104184230 B CN104184230 B CN 104184230B CN 201410460766 A CN201410460766 A CN 201410460766A CN 104184230 B CN104184230 B CN 104184230B
- Authority
- CN
- China
- Prior art keywords
- fault
- tolerant
- permanent magnet
- highly reliable
- card column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005284 excitation Effects 0.000 title claims abstract description 44
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 210000000515 Tooth Anatomy 0.000 claims abstract description 49
- 230000005611 electricity Effects 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims description 19
- 239000004020 conductor Substances 0.000 claims description 4
- -1 neodymium iron boron Chemical group 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052803 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 2
- 150000002910 rare earth metals Chemical class 0.000 claims description 2
- 230000001360 synchronised Effects 0.000 abstract description 6
- 230000005347 demagnetization Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 238000002955 isolation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003334 potential Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Abstract
The invention discloses a kind of highly reliable composite excitation fault-tolerant motor system, including stator, rotor, rotating shaft, permanent magnet, armature tooth, fault-tolerant teeth, armature coil and magnet exciting coil；Described rotating shaft includes that axis body, card column and projection, described card column are distributed on the outer circumference surface of described axis body, and described projection is arranged in described card column；Described card column is bumped in each rotor pole being fixed to rotor pack, wedges described permanent magnet between rotor pole；All permanent magnets constitute permanent magnetic field, and all magnet exciting coils constitute electricity excitation magnetic field.Relative to conventional internal formula permagnetic synchronous motor, present invention eliminates every magnetic bridge, it is to avoid permanent magnet leakage field, and mechanical strength when improve high speed operation of motor, ensure that the highly reliable operation of motor, the most also there is the advantages such as speed-regulating range width, torque/power density and efficiency are high.
Description
Technical field
The present invention relates to a kind of motor, particularly relate to a kind of highly reliable composite excitation fault-tolerant motor.
Background technology
Internal permanent magnet synchronous motor has torque and exports big, speed-regulating range width, power density and efficiency advantages of higher,
Many high-grade drives fields are widely used.And it is contour in New-energy electric vehicle, wind-power electricity generation and Aero-Space
Performance driving field, all reliability to drive system propose the highest requirement.Drive motor as the core of drive system
Parts, its performance is to determine whole drive-train efficiency and the crucial factor of performance.And current conventional built-in type permanent-magnet synchronizes
Motor there are still permanent magnet demagnetization and adjustment of field excitation difficult problem, and does not considers the fault freedom of motor, it is impossible to meets system
System reliability requirement and fault-tolerant operation ability.
It addition, current conventional internal permanent magnet synchronous motor typically uses and realizes every magnetic every magnetic bridge.Work every magnetic bridge
With having two: one to be, rotor punching is connected into an entirety with sufficient mechanical strength；Two is by leaking every magnetic bridge position
The leakage field of the saturated restriction permanent magnet of magnetic flux.The unloaded magnetic leakage factor of motor is not only had most important by its shape and size size
Impact, but also have influence on the performances such as the starting torque of motor, mechanical strength, rotating speed, processing technique.Design is needed every magnetic bridge
Obtain sufficiently wide fully to bear mechanical strength during high speed operation of motor, but the wide leakage field that can increase permanent magnet every magnetic bridge.
Therefore, in conventional internal permanent magnet synchronous motor, the most difficult every the tradeoff design of magnetic bridge.Based on above-mentioned background, having must
Develop a kind of novel highly reliable composite excitation fault-tolerant motor system.
Summary of the invention
Technical problem: for above-mentioned prior art and deficiency thereof, the present invention intends providing a kind of highly reliable composite excitation fault-tolerant
Electric system, solves fault-tolerant operation poor performance present in conventional internal formula permagnetic synchronous motor, permanent magnet demagnetization and Excitation Adjustment
Joint difficult problem, saves every magnetic bridge, it is to avoid the leakage field of permanent magnet simultaneously, and machinery when can improve high speed operation of motor is strong
Degree, it is ensured that the highly reliable operation of motor.
Technical scheme: for achieving the above object, the technical solution used in the present invention is:
A kind of highly reliable composite excitation fault-tolerant motor system, including stator, rotor, rotating shaft, permanent magnet, armature tooth, fault-tolerant
Tooth, armature coil and magnet exciting coil；Armature tooth and fault-tolerant teeth are uniformly distributed along stator inner ring is circumferentially-spaced, and armature tooth
The facewidth of the facewidth and fault-tolerant teeth is unequal；Being wound with armature coil on armature tooth, for monolayer concentratred winding, two adjacent monolayers are concentrated
Being isolated by fault-tolerant teeth between winding, the armature coil on two armature tooths diametrically is connected into a phase；Excitation wire snare
It is contained on stator fault-tolerant teeth, and magnet exciting coil head and the tail successively are composed in series a set of single-phase central excitation winding；It is characterized in that: institute
Stating rotating shaft and include that axis body, card column and projection, described card column are distributed on the outer circumference surface of described axis body, described projection sets
Put in described card column；Described card column is bumped in each rotor pole being fixed to rotor pack, wedges between rotor pole
Described permanent magnet and permanent magnet top and bottom are without magnetic conductor；All permanent magnets constitute permanent magnetic field, all magnet exciting coil structures
Become electricity excitation magnetic field.
The bearing of trend of described card column is positioned at described axis body radially；Described projection is arranged on the top of described card column
Or middle part.
Total number of teeth of armature tooth and fault-tolerant teeth is the multiple of 2m, and total number of teeth of armature tooth and fault-tolerant teeth and permanent magnet
The difference of number of pole-pairs is ± 2, and wherein, m is the number of phases of motor.
Described permanent magnet is arranged in " spoke " type in rotor, and the wedge shape of permanent magnet top and bottom is non-magnetic material
Matter.
1. stator described in and rotor pack are stalloy, ferrum, cobalt, nickel and alloy thereof.
2. permanent magnet described in is neodymium iron boron, Rare-Earth Cobalt or aluminum nickel cobalt.
3. rotating shaft described in is non magnetic beallon.
Motor of the present invention, remains conventional internal formula permagnetic synchronous motor torque in structure and performance and exports big, speed governing
The advantages such as wide ranges, power density and efficiency are high；On excitation mode, have employed permanent magnet excitation and two kinds of excitation sides of electrical excitation
Formula, solves permanent magnet demagnetization and adjustment of field excitation difficult problem；On rotor structure, eliminate every magnetic bridge, it is to avoid permanent magnet
Leakage field, and improve motor and run on mechanical strength at a high speed, it is ensured that the highly reliable operation of motor, simultaneously rotor in forever
Magnet is arranged in " spoke " type, has poly-magnetic effect, special rotor structure and the permanent magnet of " spoke " type, contributes to into one
Step improves torque/power density.
Beneficial effect:
Compared with prior art, the method have the advantages that
(1) use redundant electric excitation, when permanent magnet occurs demagnetization or loss of excitation fault, can be produced by electrical excitation winding
Excitation field, maintain motor rotation, improve the fault-tolerant ability of motor, when motor is properly functioning, again can be with weak magnetic with reality
Existing invariable power wide range speed control runs；
(2) armature winding on stator is centralized winding, and end is short, it is simple to installs, does not has the fault-tolerant teeth conduct of winding
Flux circuit, is simultaneously achieved the isolation in motor circuit, magnetic circuit and temperature field between phase and phase, improves the reliability of motor
With fault-tolerant operation ability；
(3) special rotor structure is used so that permanent magnet top and bottom are without magnetic conductor, and permanent magnetic circuit must be through air gap
Form closed-loop path with stator, thus between permanent magnet, there is not leakage field, therefore limit leakage magnetic flux without using every magnetic bridge, carry simultaneously
High motor runs on mechanical strength at a high speed, it is ensured that the highly reliable operation of motor, and the permanent magnet in rotor is in " spoke
Bar " type setting, there is poly-magnetic effect, further increase motor torque/power density and efficiency；
(4) from the angle of design of electrical motor, considered failure tolerant and the reliability of motor, including motor demagnetization or
Loss of excitation fault, phase fault or open fault, phase winding fault and motor run mechanical strength during high speed, it is achieved motor
The highly reliable runnability with strong fault tolerance, the most also has the advantages such as speed-regulating range width, torque/power density and efficiency are high.
Accompanying drawing explanation
Fig. 1 is electric machine structure schematic diagram of the present invention.
Wherein: 1 stator, 2 rotors, 3 rotating shafts, 301 axis bodies, 302 card columns, 303 projections, 4 permanent magnets, 5 armature tooths, 6 fault-tolerant
Tooth, 7 armature coils, 8 magnet exciting coils.
Fig. 2 is the rotating shaft schematic diagram in motor of the present invention.
Detailed description of the invention
The present invention is further illustrated below in conjunction with the accompanying drawings.
It is illustrated in figure 1 a kind of highly reliable composite excitation fault-tolerant motor, pole, specially one three-phase 12 groove/10 motor, bag
Include stator 1, rotor 2, rotating shaft 3, permanent magnet 4, armature tooth 5, fault-tolerant teeth 6, armature coil 7 and magnet exciting coil 8.Armature tooth 5 and appearance
Side set 6 is uniformly distributed along stator 1 inner ring is circumferentially-spaced, and total number of teeth is the multiple (m is the number of phases of motor) of 2m, and armature tooth 5
The facewidth and the facewidth of fault-tolerant teeth 6 unequal.Non magnetic rotating shaft 3 is as in figure 2 it is shown, include axis body 301, card column 302 and projection
303, card column 302 is distributed on the outer circumference surface of axis body 301, and protruding 303 are arranged in card column 302, and card column 302 is bumped into rotor
In each rotor pole of 2 laminations, being securely fastened in rotor pole, non magnetic rotating shaft 3 suits completely with rotor 2 lamination, thus carries
High mechanical properties.Between rotor pole, wedge permanent magnet 4, arrange in " spoke " type, there is poly-magnetic effect, permanent magnet top and the end
The wedge shape in portion is non-magnetic material.This special rotor structure makes permanent magnet top and bottom without magnetic conductor, permanent magnetic circuit palpus
Form closed-loop path through air gap and stator, thus between permanent magnet, there is not leakage field, therefore limit leakage field without using every magnetic bridge
Logical, improve motor simultaneously and run on mechanical strength at a high speed, it is ensured that the highly reliable operation of motor, and contribute to further
Improve motor torque/power density and efficiency.The difference of total number of teeth of armature tooth 5 and fault-tolerant teeth 6 and the number of pole-pairs of permanent magnet 4 is ±
2。
Armature coil 7 it is wound with, for monolayer concentratred winding, by fault-tolerant between two adjacent monolayer concentratred winding on armature tooth 5
Tooth 6 is isolated, and plays alternate Magnetic isolation, physical isolation while flux circuit providing, is thermally isolated and electrical isolation
Effect, has higher reliability and the ability that operates with failure, reduces torque pulsation.It addition, armature coil 701 and armature line
Circle 704 series connection is connected as B phase winding, armature coil 703 and electricity as A phase winding, armature coil 702 and armature coil 705
Pivot coil 706 is connected as C phase winding so that the present invention fundamentally avoids phase fault.
Magnet exciting coil 8 is sleeved on fault-tolerant teeth 6, has 6, including magnet exciting coil 801, magnet exciting coil 802, magnet exciting coil
803, magnet exciting coil 804, magnet exciting coil 805 and magnet exciting coil 806, and these 6 magnet exciting coils successively head and the tail be composed in series a set of
Single-phase central excitation winding, when there is demagnetization or loss of excitation fault in permanent magnet 4, the excitation that can be produced by electrical excitation winding 8
Magnetic field, maintains motor rotation, improves the fault-tolerant ability of motor.
The operation principle of the present invention is as follows: this motor is produced main magnetic jointly by permanent magnet excitation and two kinds of excitation sources of electrical excitation
, in both magnetic potentials source, permanent magnet sources is main magnetic potential source, and electrical excitation magnetic potential is as auxiliary magnetic potential source.When motor normally works
Time, electrical excitation magnetic potential acts primarily as increase or weakens main magnetic circuit flux interaction, it is achieved motor gas-gap magnetic field scalable；Owing to using spy
Different rotor structure, it is to avoid the leakage field of permanent magnet, and improve motor and run on mechanical strength at a high speed, it is ensured that motor
Highly reliable operation；When motor generation permanent magnet demagnetization fault, the single-phase electricity Exciting Windings for Transverse Differential Protection of motor is passed through the maximum excitation of permission
Electric current produces excitation field, with armature winding reciprocal action, produces enough torques, safeguards system service requirement.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (6)
1. a highly reliable composite excitation fault-tolerant motor system, including stator (1), rotor (2), rotating shaft (3), permanent magnet (4), electricity
Armature tooth (5), fault-tolerant teeth (6), armature coil (7) and magnet exciting coil (8)；Armature tooth (5) and fault-tolerant teeth (6) are along stator inner ring week
It is uniformly distributed to interval, and the facewidth of the facewidth of armature tooth (5) and fault-tolerant teeth (6) is unequal；Armature tooth is wound with armature on (5)
Coil (7), for monolayer concentratred winding, is isolated, diametrically by fault-tolerant teeth (6) between two adjacent monolayer concentratred winding
Armature coil (7) on two armature tooths (5) is connected into a phase；Magnet exciting coil (8) is sleeved on stator fault-tolerant teeth (6), and excitation
Coil (8) head and the tail successively are composed in series a set of single-phase central excitation winding；It is characterized in that: described rotating shaft (3) includes axis body
(301), card column (302) and protruding (303), described card column (302) is distributed on the outer circumference surface of described axis body (301),
Described projection (303) is arranged in described card column (302)；Described card column (302) is bumped into and is fixed to rotor (2) lamination
In each rotor pole, between rotor pole, wedge described permanent magnet (4) and permanent magnet top and bottom without magnetic conductor；All forever
Magnet (4) constitutes permanent magnetic field, and all magnet exciting coils (8) constitute electricity excitation magnetic field.
One the most according to claim 1 highly reliable composite excitation fault-tolerant motor system, it is characterised in that: described card column
(302) bearing of trend is positioned at described axis body (301) radially；Described projection (303) is arranged on described card column (302)
Top or middle part.
One the most according to claim 1 highly reliable composite excitation fault-tolerant motor system, it is characterised in that: armature tooth (5)
It is the multiple of 2m with total number of teeth of fault-tolerant teeth (6), and the pole of total number of teeth of armature tooth (5) and fault-tolerant teeth (6) and permanent magnet (4)
The difference of logarithm is ± 2, and wherein, m is the number of phases of motor.
One the most according to claim 1 highly reliable composite excitation fault-tolerant motor system, it is characterised in that: described permanent magnet
(4) arrange in " spoke " type in rotor (2), and the wedge shape of permanent magnet (4) top and bottom is non-magnetic material.
One the most according to claim 1 highly reliable composite excitation fault-tolerant motor system, it is characterised in that: described permanent magnet
(4) it is neodymium iron boron, Rare-Earth Cobalt or aluminum nickel cobalt.
One the most according to claim 1 highly reliable composite excitation fault-tolerant motor system, it is characterised in that: described rotating shaft
(3) it is non magnetic beallon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410460766.8A CN104184230B (en) | 2014-09-12 | A kind of highly reliable composite excitation fault-tolerant motor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410460766.8A CN104184230B (en) | 2014-09-12 | A kind of highly reliable composite excitation fault-tolerant motor system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104184230A CN104184230A (en) | 2014-12-03 |
| CN104184230B true CN104184230B (en) | 2017-01-04 |
Family
ID=
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414775A (en) * | 2008-12-02 | 2009-04-22 | 江苏大学 | Freestanding bi-convex-pole fault-tolerance motor |
| CN102067411A (en) * | 2008-06-16 | 2011-05-18 | 利莱森玛发电机有限公司 | Permanent magnet rotor, and rotating machine comprising such a rotor |
| CN102290883A (en) * | 2011-08-26 | 2011-12-21 | 东南大学 | Redundant excitation double-armature winding multiphase magnetic flux switching motor with fault-tolerant teeth |
| CN102957237A (en) * | 2011-08-22 | 2013-03-06 | 德昌电机(深圳)有限公司 | Brushless motor and motor rotor thereof |
| CN103199660A (en) * | 2013-04-08 | 2013-07-10 | 东南大学 | Stator permanent magnetic flux-switching bearing-free motor with E-shaped teeth |
| CN203387314U (en) * | 2013-07-30 | 2014-01-08 | 中山大洋电机制造有限公司 | Motor rotor structure |
| CN203423548U (en) * | 2013-08-30 | 2014-02-05 | 中山大洋电机股份有限公司 | Permanent magnetic rotor structure |
| CN203632508U (en) * | 2013-12-18 | 2014-06-04 | 南通大任永磁电机制造有限公司 | Radiation-type rotor structure for permanent magnet synchronous motor |
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102067411A (en) * | 2008-06-16 | 2011-05-18 | 利莱森玛发电机有限公司 | Permanent magnet rotor, and rotating machine comprising such a rotor |
| CN101414775A (en) * | 2008-12-02 | 2009-04-22 | 江苏大学 | Freestanding bi-convex-pole fault-tolerance motor |
| CN102957237A (en) * | 2011-08-22 | 2013-03-06 | 德昌电机(深圳)有限公司 | Brushless motor and motor rotor thereof |
| CN102290883A (en) * | 2011-08-26 | 2011-12-21 | 东南大学 | Redundant excitation double-armature winding multiphase magnetic flux switching motor with fault-tolerant teeth |
| CN103199660A (en) * | 2013-04-08 | 2013-07-10 | 东南大学 | Stator permanent magnetic flux-switching bearing-free motor with E-shaped teeth |
| CN203387314U (en) * | 2013-07-30 | 2014-01-08 | 中山大洋电机制造有限公司 | Motor rotor structure |
| CN203423548U (en) * | 2013-08-30 | 2014-02-05 | 中山大洋电机股份有限公司 | Permanent magnetic rotor structure |
| CN203632508U (en) * | 2013-12-18 | 2014-06-04 | 南通大任永磁电机制造有限公司 | Radiation-type rotor structure for permanent magnet synchronous motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104201808B (en) | A kind of composite excitation fault-tolerant motor system based on position automatic detection | |
| CN101552497B (en) | A mixed excitation biconvex pole motor T | |
| Xu et al. | High-performance fault tolerant Halbach permanent magnet Vernier machines for safety-critical applications | |
| WO2015161668A1 (en) | Permanent magnet synchronous motor and rotor thereof | |
| US10348174B2 (en) | Electric motor | |
| US7969057B2 (en) | Synchronous motor with rotor having suitably-arranged field coil, permanent magnets, and salient-pole structure | |
| JP7557368B2 (en) | Rotors for axial, radial and transverse flux motors | |
| GB2484161A (en) | Dynamo-electric machine with rotor magnet adjustable shunt | |
| WO2020191815A1 (en) | Series magnetic circuit-type double-layer hybrid permanent magnet memory motor | |
| CN105048740A (en) | Permanent magnet and variable reluctance parallel hybrid excitation brushless motor | |
| CN107078617B (en) | Bimorph transducer type rotator | |
| JP6789451B1 (en) | Hybrid field double gap synchronous machine and drive system | |
| WO2016004823A1 (en) | Stator, brushless direct current motor, three-phase switch reluctance motor and shaded pole motor | |
| CN106341016B (en) | A kind of disc type double cross chain focused transverse magnetic field motor | |
| CN110112878A (en) | A kind of extremely tangential excitation vernier magneto of alternating | |
| US10090720B2 (en) | Rotor comprising protruding webs | |
| JP6766575B2 (en) | Rotating electric machine | |
| CN103532328B (en) | Electric rotating machine | |
| CN204465161U (en) | A kind of single-phase transverse flux machine | |
| JP6408766B2 (en) | Axial three-dimensional gap type rotating electric machine | |
| CN106100272B (en) | A kind of double-salient-pole magnetic flux controllable motor of few rare earth tooth yoke complementation | |
| CN104767336A (en) | Single-phase separately-excited magneto-resistive power generator | |
| CN100386953C (en) | Mixed excitation bisalient-pole permanent-magnet synchronous machine | |
| CN103904855A (en) | Brushless harmonic excitation motor with initial self-starting capacity | |
| CN106787569A (en) | A kind of magnetic suspension flux switch motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 Termination date: 20190912 |