CN107733106A - A kind of integrated motor propulsor fault tolerant permanent magnet wheel rim propulsion electric machine - Google Patents
A kind of integrated motor propulsor fault tolerant permanent magnet wheel rim propulsion electric machine Download PDFInfo
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- CN107733106A CN107733106A CN201711029288.5A CN201711029288A CN107733106A CN 107733106 A CN107733106 A CN 107733106A CN 201711029288 A CN201711029288 A CN 201711029288A CN 107733106 A CN107733106 A CN 107733106A
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- Prior art keywords
- permanent magnet
- wheel rim
- electric machine
- motor
- propulsion electric
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Classifications
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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
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention relates to a kind of integrated motor propulsor fault tolerant permanent magnet wheel rim propulsion electric machine, belongs to underwater propeller motor.This motor includes stator core, stator slot, armature tooth, isolates tooth, armature winding, big air gap, magnetic pole protection sleeve, magnetic pole protective layer, centrifugal permanent-magnet body, rotor core, the propeller being welded on the inside of rotor core.Number of stator slots is 2km, and wherein k is positive integer, and m is number of motor phases, has Unequal distance armature tooth and isolation tooth on stator, rotor number of poles is 2k (m ± 1).The characteristics of motor is to continue stably to run after open fault or short trouble occur for machine winding.Compared to current other integrated motor propulsor motors, present invention firstly provides the wheel rim propulsion electric machine with fault-tolerant ability, fault tolerant permanent magnet machine is applied to submarine navigation device first, is effectively improved the reliability of marine propuision system.Fault tolerant permanent magnet wheel rim propulsion electric machine involved in the present invention has the features such as torque pulsation is small, and fault freedom is strong, structure is relatively easy, easily manufactured.
Description
Technical field
The present invention relates to one kind can be applied to the waters surface such as naval vessel, unmanned boat, underwater robot, submarine and torpedo, underwater boat
Drive device in the electric propulsion system of row device, it is that a kind of integrated motor propulsor is pushed away with fault tolerant permanent magnet wheel rim specifically
Stepper motor.
Background technology
For the technical field of motor body design and its operation principle, Chinese patent literature CN106911237A is disclosed
A kind of more excitation source bimorph transducer magnetic fluxs switching memory electrical machines of few terres rares, the motor is from outside to inside successively by coaxial outer fixed
Son, rotor and inner stator are mutually socketed composition；Radial air gap be present between external stator and rotor, between rotor and inner stator；
External stator includes armature core tooth, fault-tolerant teeth and stator yoke and formed, and rotor is by rotor field spider, magnetic conduction silicon steel block and magnetic insulation block
Form, inner stator is made up of inner-stator iron core and hybrid permanent-magnet cell block.
Further, Chinese patent literature CN107017754A discloses a kind of fault-tolerant straight line vernier motor of cylindrical permanent, should
Motor includes primary (1), secondary (2), armature winding (3), permanent magnet array (4), air gap (5)；Air gap (5) is arranged on described first
Between level (1) and secondary (2)；The primary (1) includes the unit module (11) of three identical structure types and equidistant arrangement, single
Element module (11) is made up of two adjacent armature tooth A (12), B (13), and adjacent armature tooth A (12), B are provided with groove between (13),
Groove is embedded in pie winding (3)；The increment of embedded primary (1) unit module (11) of permanent magnet array (4).
Further, Chinese patent literature CN106712426A proposes a kind of each five mutually independent phase permanent-magnetic wind driven generators, bag
Stator core, outer rotor iron core, permanent magnet, armature winding, stator fixed block and axle are included, belongs to specific type of electric machine technical field.Electricity
Machine outer rotor iron core has the 16X rotor poles protruded to inner side, and X is positive integer, and 16X rotor pole is uniform；Stator core shares
5X sub- iron cores, every sub- iron core has three stator poles, wherein the length of pole arc of a middle stator poles is rotor pole arc length
1.53 times of degree, the stator poles of both sides are wide wide equal with rotor pole；On sub- iron core among stator poles and both sides stator poles it
Between be embedded with permanent magnet.
Compare three patent documents of the above, the fault freedom for improving motor is more prominent.Wherein, first document relates to
And motor its double-stator structure realize the separation of armature winding and permanent magnet, solve in traditional flux switch permanent magnet motor
More excitation sources spatially mutually pin down problem, easy lifting motor power density and torque density；Effectively reducing rare earth forever
While the dosage of magnetic material, ensure high air gap flux density, it is ensured that power of motor density and torque density, on the other hand can be with
The flexible modulation in motor gas-gap magnetic field is realized, improves rotating speed range of operation.
The technical scheme that second document is related to has highlighted causes motor by the combination of cylinder motor and cursor effect
Efficiency with bigger pushing force density and Geng Gao, while the use of Primary modular complementary structure, improve the fault-tolerant of motor
Performance, cylindrical linear is eliminated because of longitudinal edge effect adverse effect.
The stator core that the motor that 3rd document is related to then is highlighted in motor is separate, be wound in stator poles around
Therefore group is also mutually isolated, therefore, when a wherein phase breaks down, remaining winding can be which thereby enhanced with fault-tolerant operation and be
The reliability of system.
In addition to above-mentioned document, also several patent documents associated with background technology：Patent CN201510786583.X,
CN201210129358.5, CN103818535A.Further, under water in the technical field of propeller, also a kind of air
Gap wheel rim propeller, the device, as wheel rim propeller built-in motor, form air using magneto between stator and rotor
Gap；Permanent magnet is placed using Halbach array；Propeller and motor are integrated, and propeller is directly embedded in internal rotor.
The problem of underwater propulsion noise of motor is high is can solve the problem that, motor quality mitigation, rotary inertia can be made to diminish, there is good move
State response characteristic；Meanwhile rotor for it is solid, winding need not be started, so it is simple in construction, starting torque is big；The big air gap of motor
Resistance is smaller when can make water excessively stream.But current wheel rim propeller built-in motor is mainly brushless direct current motor and permanent-magnet synchronous
Motor, brushless direct current motor have the shortcomings that output torque pulsation is big, although traditional permasyn morot overcomes
The shortcomings that brushless direct current motor torque pulsation is big, but fault-free fault-tolerant ability.Because wheel rim propeller immersion is in underwater long
Phase works, and the electric faults such as open circuit, short circuit easily occur for built-in motor, and now ship will lose thrust power.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of integrated motor propulsor fault tolerant permanent magnet wheel rim and promote electricity
Machine, traditional integrated motor propulsor brushless direct current motor and permasyn morot are substituted with it, reduced so as to realize
Motor torque ripple, the purpose for improving propulsion system failure fault-tolerant ability.
Therefore, the technical scheme that the present invention solves described problem is：A kind of integrated motor propulsor fault tolerant permanent magnet wheel rim
Propulsion electric machine, wherein, the motor body is in flat structure and installs in the catheter, and the motor body includes stator core,
Stator slot, armature tooth, isolation tooth, stator winding, the big air gap being placed in motor body, magnetic pole protection sleeve, magnetic pole protective layer,
Centrifugal permanent-magnet body, rotor core, the propeller being welded on the inside of rotor core；Wherein, the number of stator slot is 2km, wherein,
K is positive integer, and m is number of motor phases, and the number of magnetic poles of the rotor is 2k (m ± 1).
Preferably, the armature tooth isolates tooth Unequal distance with described.
Preferably, the stator winding uses centralized stator winding.
Preferably, the stator is the fault tolerant permanent magnet wheel with the inductance value that can suppress short circuit current after optimized design
Edge propulsion electric machine stator.
Preferably, the big air gap, it is that a kind of seawater can be in the big gap structure of free slime flux in it.
Preferably, it is provided with magnetic pole protective layer between described magnetic pole protection sleeve and magnetic pole.
Compared with prior art, the fault tolerant permanent magnet wheel rim propulsion electric machine designed by the present invention can open a way in machine winding
Continue stably to run after failure or short trouble.It is first compared to current other integrated motor propulsor motors, the present invention
The fault tolerant permanent magnet wheel rim propulsion electric machine with failure tolerant ability is first proposed, fault tolerant permanent magnet machine is applied to underwater boat first
Row device, it is effectively improved the reliability of marine propuision system.Integrated motor propulsor fault tolerant permanent magnet designed by the present invention
It is excellent that wheel rim propulsion electric machine has that torque pulsation is small, fault-tolerant ability is strong, control performance is good, structure is relatively easy and is easily worked etc.
Point.
Figure of description
Fig. 1 is fault tolerant permanent magnet wheel rim propulsion electric machine structural representation；
Fig. 2 is fault tolerant permanent magnet wheel rim propulsion electric machine partial structural diagram；
Fig. 3 is fault tolerant permanent magnet wheel rim propulsion electric machine A phase inductance oscillograms；
Fig. 4 is fault tolerant permanent magnet wheel rim propulsion electric machine no-load back electromotive force oscillogram；
Fig. 5 is fault tolerant permanent magnet wheel rim propulsion electric machine cogging torque pulsating waveform figure.
In figure：1- fault tolerant permanent magnet wheel rim propulsion electric machine stator cores, 2- stator slots, 3- armature tooths, 4- isolation teeth, 5- stators
Winding, the big air gaps of 6-, 7- are used for the protection sleeve of fixed magnetic pole, and 8- magnetic poles protective layer (is made up of anti-corrosion materials such as potting resins
Protective layer), 9- centrifugal permanent-magnet bodies, 10- rotor cores, 11- propellers, 12- fault tolerant permanent magnet wheel rim propulsion electric machine bodies.
Embodiment
It is a kind of integrated motor propulsor applied to submarine navigation device following examples set forth the present invention with reference to accompanying drawing
With fault tolerant permanent magnet wheel rim propulsion electric machine.It is as shown in Figure 1 a pole fault tolerant permanent magnet wheel rim propulsion electric machine example of 6 phase, 48 groove 40.
Fault tolerant permanent magnet wheel rim propulsion electric machine designed by the present invention is individually powered per phase winding using H bridge inverters, is being occurred
Other normal phases are not coupled to when short circuit in winding or open fault, realize the electrical isolation between motor phase.Machine winding
By differing the sine wave drive of 60 degree of electrical angles, torque pulsation is small.
As shown in figure 1, stator winding uses concentratred winding A ﹢, A ﹣, B ﹢, B ﹣, C ﹢, C ﹣, D ﹢, D ﹣, E ﹢, E ﹣, F ﹢, F ﹣ are realized
Physical isolation between each phase, it is thermally isolated and Magnetic isolation, avoids phase fault, reduce fault rate.Centralized winding system
Work, rule are easy, and winding can use mechanical coiling, reduce cost.Winding overhang is short, and resistance is smaller, caused copper loss
Also it is smaller.The pulsation of concentratred winding cogging torque is small, and the example teeth groove torque pulsation as shown in Figure 5 is less than nominal torque
0.24%.
As shown in Figure 1：Seawater is full of in air gap 6 in fault tolerant permanent magnet wheel rim propulsion electric machine body 12, seawater can be free
Slime flux, for heat produced by each winding by Absorption by Sea Water, motor body has good heat-sinking capability.
In order to obtain preferable no-load back electromotive force waveform, the present invention uses centrifugal permanent-magnet body, and permanent magnetism as shown in Figure 1 holds
The centrifugation of wrong wheel rim propulsion electric machine permanent magnet is highly 112mm.The different optimal centrifugations of motor size are highly different, such as Fig. 4
It is shown, fault tolerant permanent magnet wheel rim propulsion electric machine of the present invention, there is the higher no-load back electromotive force of sine degree, compared to
The complicated design of Halbach array, the design of centrifugal permanent-magnet body is simple, easily optimization.
Motor in embodiment is six-phase motor, and the choice of the number of phase has preferable redundant ability, the groove motor footpath of six phase 48
Phase magnetic is close symmetrical, has relatively low Unbalanced-magnetic-pull.Number of phases slot number selection reduces fault tolerant permanent magnet wheel rim and promotes electricity
The vibration noise of machine.
As shown in figure 1, motor pole number slot-number ratio is 5:6, under winding as shown in Figure 1 distribution, the pole groove has under coordinating
Larger fundamental wave winding coefficient：0.966.
Again as shown in figure 1, stator winding A-, A+, B-, B+, C-, C+, D-, D+, E-, E+, F-, F+ are alternate to be equipped with isolation
Tooth 4, realize heat and Magnetic isolation between each phase.Simultaneously use unequal blade spacing scheme, by optimization isolation between cog size come
Optimize the performance of motor.Because fault tolerant permanent magnet wheel rim propulsion electric machine yoke portion is relatively thin, it is impossible to the built-in field structure of use, therefore this reality
Apply example and employ surface-mount type magnetic pole as shown in Figure 1, N, S pole are alternately arranged.
Still as shown in figure 1, fault tolerant permanent magnet wheel rim propulsion electric machine is in order to adapt to underwater running environment, it is necessary to good anti-corrosive properties
Energy.In view of fault tolerant permanent magnet wheel rim propulsion electric machine body 12 radiated by seawater in air gap, anti-corrosion material thickness, protect sleeve
Thickness, and the mechanical property requirements caused by major diameter, fault tolerant permanent magnet wheel rim propulsion electric machine of the invention is compared to traditional electricity
Machine has big air gap 6, and the width of fault tolerant permanent magnet wheel rim propulsion electric machine air gap is 2mm in practice.
In embodiment, propeller 11 is welded on rotor core 10, shaftless scheme of rotation is realized and eliminates transmission
Shafting.Also, in order to meet the size of propeller, and also to adapt to catheter shape, the present invention is by Design of Propeller into flat
Flat structure.In practice, in order to reduce fluid resistance, improve the efficiency of propulsion plant, in the present embodiment the stator of propulsion electric machine and
The general thickness of rotor is as far as possible small, close in order to reduce yoke portion magnetic, and reduces the influence caused by big air gap, and can use includes this
Embodiment and its outside multipole design.
As shown in figure 3, it is the present embodiment A phase winding inductance, i.e., in practice by reducing axial length, increase notch thickness
Degree, reduce width of rebate to increase winding inductance；There is data to suggest that A phases under this structure (other phases are identical with A phase situations, therefore
Do not draw) there is great self-induction, mutual inductance value is less than the 2% of self-induction, and short circuit current is less than rated current under this self-induction
1.25 again.This technical scheme can fully demonstrate the good Magnetic isolation of the present invention and suppress the ability of short circuit current.
As shown in figure 1, in order to reduce fault tolerant permanent magnet wheel rim propulsion electric machine radical length, the shape of stator slot is a kind of reduction
The groove profile of the shallow and wide of stator outer diameter.
As shown in Fig. 2 in order that propulsion electric machine is in good working order all the time, highlighted in embodiment on magnetic pole
Protection sleeve 7 is set, while the magnetic pole protective layer 8 being made up of anti-corrosion materials such as resins is provided with magnetic pole gap.
To sum up, ship integrated motor propulsor involved in the present invention fault tolerant permanent magnet wheel rim propulsion electric machine, have stronger
Magnetic, physics, electrically, ability is thermally isolated, short circuit current can be suppressed, can be stablized under stator winding inter-turn short circuit fault, open fault
Operation, have the characteristics that power density is high, fault-tolerant ability is strong.
Claims (6)
1. a kind of integrated motor propulsor fault tolerant permanent magnet wheel rim propulsion electric machine, it is characterised in that the motor body is in flat
Structure and installation is in the catheter, the motor body includes stator core, stator slot, armature tooth, isolation tooth, stator winding, puts
In the big air gap in motor body, magnetic pole protection sleeve, magnetic pole protective layer, centrifugal permanent-magnet body, rotor core, rotor is welded on
Propeller on the inside of iron core；Wherein, the number of stator slot is 2km, wherein, k is positive integer, and m is number of motor phases, the rotor
Number of magnetic poles is 2k (m ± 1).
2. integrated motor propulsor according to claim 1 fault tolerant permanent magnet wheel rim propulsion electric machine, it is characterised in that described
Armature tooth isolates tooth Unequal distance with described.
3. integrated motor propulsor according to claim 1 fault tolerant permanent magnet wheel rim propulsion electric machine, it is characterised in that described
Stator winding uses centralized stator winding.
4. integrated motor propulsor according to claim 1 fault tolerant permanent magnet wheel rim propulsion electric machine, it is characterised in that described
Stator is the fault tolerant permanent magnet wheel rim propulsion electric machine stator with the inductance value that can suppress short circuit current after optimized design.
5. integrated motor propulsor according to claim 1 fault tolerant permanent magnet wheel rim propulsion electric machine, it is characterised in that described
Big air gap, it is that a kind of seawater can be in the big gap structure of free slime flux in it.
6. integrated motor propulsor according to claim 1 fault tolerant permanent magnet wheel rim propulsion electric machine, it is characterised in that in institute
Magnetic pole protective layer is provided between the magnetic pole protection sleeve and magnetic pole stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711029288.5A CN107733106B (en) | 2017-10-27 | 2017-10-27 | Permanent-magnet fault-tolerant rim propulsion motor for integrated motor propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711029288.5A CN107733106B (en) | 2017-10-27 | 2017-10-27 | Permanent-magnet fault-tolerant rim propulsion motor for integrated motor propeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107733106A true CN107733106A (en) | 2018-02-23 |
| CN107733106B CN107733106B (en) | 2020-04-07 |
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|---|---|---|---|
| CN201711029288.5A Active CN107733106B (en) | 2017-10-27 | 2017-10-27 | Permanent-magnet fault-tolerant rim propulsion motor for integrated motor propeller |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111193336A (en) * | 2020-01-17 | 2020-05-22 | 大连海事大学 | Few-groove multi-pole permanent magnet fault-tolerant rim propulsion motor |
| CN112688454A (en) * | 2020-12-15 | 2021-04-20 | 大连海事大学 | Permanent-magnet fault-tolerant vernier rim propulsion motor with optimized surface shape of alternating-pole rotor |
| CN113277053A (en) * | 2021-04-30 | 2021-08-20 | 大连海事大学 | Marine air pressure drive rim propeller |
| CN115123510A (en) * | 2022-08-03 | 2022-09-30 | 江南造船(集团)有限责任公司 | Ship electric propulsion system and electric propulsion method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546931A (en) * | 2009-04-28 | 2009-09-30 | 中国船舶重工集团公司第七一二研究所 | Integrated propeller |
| CN102195403A (en) * | 2011-05-19 | 2011-09-21 | 乔鸣忠 | Large-gap and low-noise engine-propeller integrated permanent magnet propulsion unit |
| CN102632982A (en) * | 2012-04-28 | 2012-08-15 | 中国船舶重工集团公司第七○二研究所 | Shaftless driven type integrated motor propeller |
| CN106992652A (en) * | 2017-04-12 | 2017-07-28 | 浙江大学 | Five mutually fault-tolerant direct current generators of 270V high power densities |
| CN107070016A (en) * | 2017-04-18 | 2017-08-18 | 苏州汇川联合动力系统有限公司 | Double remaining stators and double remaining motors |
-
2017
- 2017-10-27 CN CN201711029288.5A patent/CN107733106B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546931A (en) * | 2009-04-28 | 2009-09-30 | 中国船舶重工集团公司第七一二研究所 | Integrated propeller |
| CN102195403A (en) * | 2011-05-19 | 2011-09-21 | 乔鸣忠 | Large-gap and low-noise engine-propeller integrated permanent magnet propulsion unit |
| CN102632982A (en) * | 2012-04-28 | 2012-08-15 | 中国船舶重工集团公司第七○二研究所 | Shaftless driven type integrated motor propeller |
| CN106992652A (en) * | 2017-04-12 | 2017-07-28 | 浙江大学 | Five mutually fault-tolerant direct current generators of 270V high power densities |
| CN107070016A (en) * | 2017-04-18 | 2017-08-18 | 苏州汇川联合动力系统有限公司 | Double remaining stators and double remaining motors |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111193336A (en) * | 2020-01-17 | 2020-05-22 | 大连海事大学 | Few-groove multi-pole permanent magnet fault-tolerant rim propulsion motor |
| CN112688454A (en) * | 2020-12-15 | 2021-04-20 | 大连海事大学 | Permanent-magnet fault-tolerant vernier rim propulsion motor with optimized surface shape of alternating-pole rotor |
| CN113277053A (en) * | 2021-04-30 | 2021-08-20 | 大连海事大学 | Marine air pressure drive rim propeller |
| CN115123510A (en) * | 2022-08-03 | 2022-09-30 | 江南造船(集团)有限责任公司 | Ship electric propulsion system and electric propulsion method |
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| Publication number | Publication date |
|---|---|
| CN107733106B (en) | 2020-04-07 |
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