CN104767353B - The cylinder type multi-phase permanent linear motor of high modularization - Google Patents
The cylinder type multi-phase permanent linear motor of high modularization Download PDFInfo
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- CN104767353B CN104767353B CN201510213465.XA CN201510213465A CN104767353B CN 104767353 B CN104767353 B CN 104767353B CN 201510213465 A CN201510213465 A CN 201510213465A CN 104767353 B CN104767353 B CN 104767353B
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Abstract
The cylinder type multi-phase permanent linear motor of high modularization, belong to magneto field, the present invention is to solve conventional multi-phase permanent linear motor when the failures such as winding short circuit occur, Fault Isolation difficulty is big, and the problem that the motor module design difficulty as caused by inter-phase electromagnetic degree of coupling height is big.The present invention includes stator and permanent magnetic rotor, stator can be set permanent magnetic rotor either internally or externally, and have air gap between the two；Stator is assembled by 2m stator modules, and the stator modules are assembled into a cylindrical shape along axial direction；Each stator modules include stator core, the annular concentratred winding of an armature tooth, two fault-tolerant teeths and two；One phase module of the cylinder type multi-phase permanent linear motor of the high modularization is made of two adjacent stator modules；Permanent magnetic rotor is assembled by permanent magnet and mover core, and permanent magnetic rotor can be surface-mount type structure, Halbach structure or axial charging formula structure etc..
Description
Technical field
The present invention relates to a kind of modularization multiphase permanent magnet fault-tolerant electric machines, belong to magneto field.
Background technique
Since 21 century, with getting worse for energy crisis and problem of environmental pollution, energy conservation and environmental protection are increasingly becoming and work as
The two principal themes of modern development of automobile obtains more and more concerns by the new-energy automobile of representative of hybrid vehicle.It presses
According to the difference of driving system structure, hybrid vehicle can be divided into tandem, parallel and three kinds of series parallel type.It is mixed in tandem
In power vehicle, free-piston engine is combined with linear motor, forms free-piston type linear generating system, instead of
The traditional internal-combustion piston engine based on crankshaft connecting rod system reduces while realizing the high efficiency low emission of internal combustion engine
Between mechanical transmission mechanism, make that entire power drive system is more compact, reliable, system effectiveness is also increased dramatically.For electronic
For automobile, the safety and reliability of power drive system is most important.Currently, traditional three-phase permanent linear motor is being sent out
When raw winding open circuit or short trouble, acute variation can occur for the thrust output of motor, cannot even work, this will be right
The performance of power drive system causes to seriously affect.And multi-phase permanent linear motor is due to the redundancy of its number of phases, thus have good
Fault-tolerant operation ability, be suitable for electric car etc. to the higher occasion of power drive system reliability requirement.It is so-called fault-tolerant to refer to
Electric system in case of a failure, by adjusting the control strategy of motor, can make the system still maintain certain
Fan-out capability, while also with the ability for preventing failure from deteriorating and spreading under nonserviceabling.By using multiphase fault-tolerant permanent magnetism
Linear motor can make electric car continue to run until trouble shooting in the case where motor breaks down, this will be mentioned significantly
The safety and reliability of high electric car is the ideal chose of electric car.
In order to enable motor to continue to run under the malfunctions such as winding open circuit, short circuit, multiphase fault-tolerant permanent-magnet linear electricity
It is necessary to meet following condition in design for machine: alternate to have good electric isolution, Magnetic isolation, be thermally isolated and be physically isolated.It adopts
With conventional distributed winding or the multi-phase permanent linear motor of fractional-slot concentratred winding, inter-phase electromagnetic degree of coupling is big, is sending out
When the failures such as raw winding short circuit, short circuit, which is met, normally mutually impacts other, increases the difficulty of faults-tolerant control.This
Outside, using distributed winding or the motor of vulgar fraction slot winding, due to the spatial distribution problem of its winding, it is difficult to motor into
Row modularized design.
Summary of the invention
The invention aims to solve conventional multi-phase permanent linear motor when the failures such as winding short circuit occur, failure every
It is big from difficulty, and the problem that the motor module design difficulty as caused by inter-phase electromagnetic degree of coupling height is big, provide one
The cylinder type multi-phase permanent linear motor of kind high modularization.
The cylinder type multi-phase permanent linear motor of high modularization of the present invention, it includes stator and permanent magnetic rotor, is determined
Permanent magnetic rotor is arranged in either internally or externally in son, and there are the air gaps that length is L between the two；
Stator is assembled by 2m stator modules, and m is the number of phases of motor, and 2m stator modules are assembled into one along axial direction
Columnar stator；
Each stator modules include stator core and annular concentratred winding；Annular concentratred winding include it is first annular concentrate around
Group and the second annular concentratred winding double winding；
Stator slot there are two opening in the stator core, stator core and stator slot are circular ring shape, and stator slot is towards forever
The setting of magnetic mover；Respectively embedded with first annular concentratred winding and the second annular concentratred winding, first annular collection in two stator slots
The number of turns of middle winding and the second annular concentratred winding is identical, and coiling is contrary；
Two stator slots are surrounded by the fault-tolerant teeth being arranged in two stator cores and an armature tooth, and armature tooth is along axial
The length in direction is greater than the length of fault-tolerant teeth in axial direction；
From left to right, each adjacent two stator modules constitute a phase module of motor, and two described in same phase module
The identical annular concentratred winding in coiling direction is set in the adjacent stator slot of stator modules；
Permanent magnetic rotor includes mover core and permanent magnet, and mover core and permanent magnet are circular ring shape, and permanent magnet setting exists
Surface of the mover core towards stator；Permanent magnet radially magnetizes, and the magnetizing direction of adjacent permanent magnet is alternately opposite.
Advantages of the present invention: the present invention discloses a kind of cylinder type multi-phase permanent linear motor of high modularization.By around
Group design and the use of fault-tolerant teeth have effectively contained that motor is nonserviceabled so that alternate reached good Magnetic isolation effect
Influence of the lower failure with respect to other phases.The cylinder type multi-phase permanent linear motor stator electric of high modularization uses modularized design side
Formula is conducive to fabricate on a large scale, and can replace rapidly in the case where a certain module breaks down, and reduces system
Maintenance cost.The motor is a kind of high reliablity, and power density is big, processing and manufacturing and the lower polyphase machine sheet of maintenance cost
Body organization plan.The present invention is suitable for the multi-phase permanent linear motor of three-phase and three-phase or more.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the cylinder type multi-phase permanent linear motor of high modularization of the present invention；
Fig. 2 is the magnetic line of force distribution in the case of a phase stator winding electrifying；
Fig. 3 is Halbach formula Structure of mover schematic diagram；
Fig. 4 is axial charging formula Structure of mover schematic diagram.
Specific embodiment
Specific embodiment 1: illustrating present embodiment, altitude module described in present embodiment below with reference to Fig. 1 and Fig. 2
The cylinder type multi-phase permanent linear motor of change, it includes stator 1 and permanent magnetic rotor 2, and the inside of permanent magnetic rotor 2 is arranged in stator 1
Or it is external, and there are the air gaps that length is L between the two；
Stator 1 is assembled by 2m stator modules, and m is the number of phases of motor, and 2m stator modules are assembled into one along axial direction
A columnar stator 1；
Each stator modules include stator core 3 and annular concentratred winding 5；Annular concentratred winding 5 includes first annular collection
The annular concentratred winding 5-2 double winding of middle winding 5-1 and second；
Stator slot 4 there are two opening in the stator core 3, stator core 3 and stator slot 4 are circular ring shape, 4 face of stator slot
It is arranged to permanent magnetic rotor 2；Respectively embedded with the annular concentratred winding 5- of first annular concentratred winding 5-1 and second in two stator slots 4
The number of turns of 2, first annular concentratred winding 5-1 and the second annular concentratred winding 5-2 are identical, and coiling is contrary；
Two stator slots 4 are surrounded by the fault-tolerant teeth 3-1 being arranged in two stator cores 3 and an armature tooth 3-2, and armature
The length of tooth 3-2 in axial direction is greater than the length of fault-tolerant teeth 3-1 in axial direction；
From left to right, each adjacent two stator modules constitute a phase module of motor, and two described in same phase module
The identical annular concentratred winding 5 in coiling direction is set in the adjacent stator slot 4 of stator modules；
Permanent magnetic rotor 2 includes mover core 6 and permanent magnet 7, and mover core 6 and permanent magnet 7 are circular ring shape, permanent magnet 7
Surface of the mover core 6 towards stator 1 is set；Permanent magnet 7 radially magnetizes, and the side of magnetizing of adjacent permanent magnet 7
To being alternately opposite.
Referring to Fig. 1, which is stator 1 in the outside of permanent magnetic rotor 2, and the outer surface of mover core 6 is provided with permanent magnet
7.It counts from left to right, the 1st, 2 stator modules one phase module of composition, the 3rd, 4 stator modules one phase module of composition, the 5th, 6
Stator modules constitute a phase module, do not have magnetic coupling between different phase modules.
It is illustrated in combination with fig. 2 the working principle of the invention.When the winding of a certain phase of stator 1 is powered, the magnetic line of force 8 is by being somebody's turn to do
Two armature tooth 3-2, air gap, mover core 6, permanent magnet 7 in phase stator modules form closed circuit, and without other phases
Stator modules formed closed circuit.Therefore, the different phases of the cylinder type multi-phase permanent linear motor of the high modularization
Between be not present magnetic coupling.Similarly, when short trouble occurs for a certain phase winding of motor, the magnetic force of short-circuit phase winding generation
Line is closed also by above-mentioned path, does not form closed circuit via the winding of other phases, to eliminate short circuit just with respect to other
The influence of normal phase, realizes good Magnetic isolation.Further, since the presence of two fault-tolerant teeth 3-1, winding short circuit bring winding
Fever is effectively controlled within the stator modules that short circuit occurs, and then advantageous protects other normal stator modules.
Specific embodiment 2: present embodiment is described further embodiment one, and m >=3, annular concentratred winding 5
For concentratred winding more than three-phase or three-phase.
Using polyphase windings, the fault-tolerant operation of the cylinder type multi-phase permanent linear motor of the high modularization can be improved
Performance.
Specific embodiment 3: present embodiment is described further embodiment one, stator core 3 by silicon steel sheet,
Amorphous state ferromagnetic composite material or SMC soft-magnetic composite material are constituted.
Mover core 6 is made of single solid steel, silicon steel sheet, amorphous state ferromagnetic composite material or SMC soft-magnetic composite material.
Specific embodiment 4: illustrating present embodiment below with reference to Fig. 3 and Fig. 4, present embodiment is to embodiment one
It is described further, the number of poles of permanent magnetic rotor 2 is selected according to overtone order magnetomotive in air gap.In 2 phase of permanent magnetic rotor
When doing relative motion for stator 1, the permanent magnet 7 between 1 two ends of stator effectively works, and is located at 1 end of stator
Permanent magnet 7 except portion does not work, and it is to be located at stator 1 two ends that therefore, in present embodiment the number of poles of permanent magnetic rotor 2 is corresponding
The quantity of permanent magnet 7 between portion.
Permanent magnetic rotor 2 is using surface-mount type structure, Halbach structure or axial charging formula structure.
Halbach formula Structure of mover as shown in figure 3, the Halbach formula mover by several pieces of different magnetizing directions
Halbach permanent 9 and mover bracket 10 form, and Halbach permanent 9 is placed on the outer surface of mover bracket 10；Axially fill
Magnetic-type mover as shown in figure 4, the axial charging formula mover by mover bracket 10, magnetic inductive block 11 and axial charging permanent magnet
12 compositions, magnetic inductive block 11 and axial charging permanent magnet 12 are alternately arranged along axial direction and are placed on the outer surface of mover bracket 10, phase
The magnetizing direction of adjacent axial charging permanent magnet 12 is alternately opposite；Mover bracket 10 is by non-magnet materials such as titanium alloy, aluminium alloys
Manufacture.
Claims (6)
1. the cylinder type multi-phase permanent linear motor of high modularization, which is characterized in that it includes stator (1) and permanent magnetic rotor
(2), stator (1) setting permanent magnetic rotor (2) either internally or externally, and between the two there are length be L air gap；
Stator (1) is assembled by 2m stator modules, and m is the number of phases of motor, and 2m stator modules are assembled into one along axial direction
Columnar stator (1)；
Each stator modules include stator core (3) and annular concentratred winding (5)；Annular concentratred winding (5) includes first annular
Concentratred winding (5-1) and second annular concentratred winding (5-2) double winding；
There are two opening on the stator core (3) stator slot (4), stator core (3) and stator slot (4) are circular ring shape, stator
Slot (4) is arranged towards permanent magnetic rotor (2)；First annular concentratred winding (5-1) and the second ring are embedded in two stator slots (4) respectively
Shape concentratred winding (5-2), first annular concentratred winding (5-1) is identical with the number of turns of the second annular concentratred winding (5-2), coiling side
To opposite；
Two stator slots (4) are surrounded by the fault-tolerant teeth (3-1) being arranged on two stator cores (3) and an armature tooth (3-2), and
The length of armature tooth (3-2) in axial direction is greater than the length of fault-tolerant teeth (3-1) in axial direction；
From left to right, each adjacent two stator modules constitute a phase module of motor, and two stators described in same phase module
The identical annular concentratred winding (5) in setting coiling direction in the adjacent stator slot of module (4)；
Permanent magnetic rotor (2) includes mover core (6) and permanent magnet (7), and mover core (6) and permanent magnet (7) are circular ring shape, forever
Magnet (7) is arranged on the surface of mover core (6) towards stator (1)；Permanent magnet (7) radially magnetizes, and it is adjacent forever
The magnetizing direction of magnet (7) is alternately opposite.
2. the cylinder type multi-phase permanent linear motor of high modularization according to claim 1, which is characterized in that m >=3, ring
Shape concentratred winding (5) is the concentratred winding of three-phase or three-phase or more.
3. the cylinder type multi-phase permanent linear motor of high modularization according to claim 1, which is characterized in that stator core
(3) it is made of silicon steel sheet, amorphous state ferromagnetic composite material or SMC soft-magnetic composite material.
4. the cylinder type multi-phase permanent linear motor of high modularization according to claim 1, which is characterized in that mover core
(6) it is made of single solid steel, silicon steel sheet, amorphous state ferromagnetic composite material or SMC soft-magnetic composite material.
5. the cylinder type multi-phase permanent linear motor of high modularization according to claim 1, which is characterized in that permanent magnetic rotor
(2) number of poles is selected according to overtone order magnetomotive in air gap.
6. the cylinder type multi-phase permanent linear motor of high modularization according to claim 1, which is characterized in that permanent magnetic rotor
(2) surface-mount type structure, Halbach structure or axial charging formula structure are used.
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Families Citing this family (9)
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| GB2559516B (en) * | 2015-10-14 | 2022-08-31 | Univ Jiangsu | Interior composite magnetic material fault-tolerant tubular linear motor, and short-circuit fault-tolerant vector control method thereof |
| CN105207446B (en) * | 2015-10-14 | 2018-10-09 | 江苏大学 | A kind of fault-tolerant cylindrical linear motor of embedded mixing magnetic material |
| CN106998122B (en) * | 2016-01-26 | 2019-04-16 | 王文亮 | The coil windings method of line windering function is twined with enameled wire line end |
| JP2018113749A (en) * | 2017-01-10 | 2018-07-19 | 橘コンサルタンツ株式会社 | Energy Converter |
| DE102019216117A1 (en) * | 2019-10-18 | 2021-04-22 | Festo Se & Co. Kg | Linear drive device |
| CN110798045B (en) * | 2019-11-11 | 2021-02-26 | 华中科技大学 | Odd-pole three-phase vernier permanent magnet linear motor |
| CN111082548A (en) * | 2020-01-10 | 2020-04-28 | 南京航空航天大学 | Stator modular hybrid excitation alternating pole magnetic flux reverse motor |
| CN111082622A (en) * | 2020-01-10 | 2020-04-28 | 南京航空航天大学 | Decoupling type birotor alternating pole permanent magnet motor |
| CN114123639A (en) * | 2021-11-26 | 2022-03-01 | 意力(广州)电子科技有限公司 | Electrodynamic cylinder |
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| CN101814819A (en) * | 2010-05-11 | 2010-08-25 | 南通大学 | Independent sinusoidal driving permanent magnet synchronous fault-tolerant linear motor |
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| CN101860174B (en) * | 2010-05-12 | 2012-11-28 | 东南大学 | Complementary type modularization permanent-magnetism linear motor and motor die set formed by same |
| US20120299398A1 (en) * | 2011-05-23 | 2012-11-29 | Nikon Corporation | Motor, design method and manufacturing method of motor, stage device, and exposure apparatus |
| CN104052234B (en) * | 2014-06-10 | 2016-04-27 | 江苏大学 | A kind of electromagnetic vehicle suspension drives by the fault-tolerant permanent-magnet linear actuator of five phase cylinder types |
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| CN102160256A (en) * | 2009-09-11 | 2011-08-17 | 深圳航天科技创新研究院 | Large-diameter type three-phase brushless permanent magnet direct current motor and assembling method thereof |
| CN101814819A (en) * | 2010-05-11 | 2010-08-25 | 南通大学 | Independent sinusoidal driving permanent magnet synchronous fault-tolerant linear motor |
| CN102938603A (en) * | 2012-11-26 | 2013-02-20 | 江苏大学 | Cylindrical permanent-magnet linear motor with modular C-shaped stator cores |
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