CN104767351A - Highly-modularized flat plate type multiphase permanent magnet linear motor - Google Patents
Highly-modularized flat plate type multiphase permanent magnet linear motor Download PDFInfo
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- CN104767351A CN104767351A CN201510212416.4A CN201510212416A CN104767351A CN 104767351 A CN104767351 A CN 104767351A CN 201510212416 A CN201510212416 A CN 201510212416A CN 104767351 A CN104767351 A CN 104767351A
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Abstract
The invention belongs to the field of permanent magnet motors, and relates to a highly-modularized flat plate type multiphase permanent magnet linear motor. The problems that when a winding short circuit and other failures happen to a conventional multiphase permanent magnet linear motor, the failure isolation difficulty is large, and motor modular design difficulty is large due to the high interphase electromagnetic coupling degree are solved. The highly-modularized flat plate type multiphase permanent magnet linear motor comprises a stator and a permanent magnet rotor, the stator can be arranged on one or two sides of the permanent magnet rotor, and an air gap exists between the stator and the permanent magnet rotor. The stator is formed by assembling 2m stator modules. The stator modules are assembled to be in a flat plate shape in the axial direction. Each stator module comprises a stator iron core, an armature tooth, two fault-tolerant teeth and two concentrated windings. A one-phase module of the highly-modularized flat plate type multiphase permanent magnet linear motor is composed of two adjacent stator modules. The permanent magnet rotor is formed by assembling a permanent magnet and a rotor iron core, and the permanent magnet rotor can be of a surface-mounted structure or a Halbach structure or an axial magnetization structure and the like.
Description
Technical field
The present invention relates to a kind of modularization multiphase permanent magnet fault-tolerant electric machine, belong to magneto field.
Background technology
Urban rail transit technology mainly contains two kinds of technology modes, and one drives wheel by adopting electric rotating machine to add gear box, drives vehicle to advance by the frictional force between wheel and rail; Another kind adopts driving system of linear motor.Compared with traditional electric rotating machine traction technique, Rail Transit System based on linear electric motors has better climbing capacity, without the need to devices such as reduction gearing, bogie and the line design degree of freedom large, tunneling section is little, is particularly suitable for selecting difficulty, complicated hydrogeological conditions to line position and erect-position and having the city of intensive building along the line.For driving system of linear motor, its safety and reliability is most important.At present, traditional three-phase permanent linear electric motors are when generation winding open circuit or short trouble, and the thrust output of motor acute variation can occur, and can not work even, and this has a strong impact on causing the performance of power drive system.And multi-phase permanent linear electric motors are due to the redundancy of its number of phases, thus there is good fault-tolerant operation ability, be applicable to the occasion that urban track traffic etc. is higher to power drive system reliability requirement.What is called is fault-tolerant refers to that electric system in case of a failure, by adjusting the control strategy of motor, can make the fan-out capability that this system still keeps certain, also has the ability preventing fault from worsening and spreading under nonserviceabling simultaneously.By adopting multiphase fault-tolerant permanent-magnetism linear motor, train can be made to continue when motor breaks down to run, until trouble shooting, this will improve the safety and reliability of driving system of linear motor greatly.
Opening a way at winding to enable motor, continuing to run under the malfunction such as short circuit, multiphase fault-tolerant permanent-magnetism linear motor is the following condition of demand fulfillment when designing: alternate will have good electric isolution, Magnetic isolation, heat isolation and physical isolation.Adopt the multi-phase permanent linear electric motors of conventional distributed winding or fractional-slot concentratred winding, its inter-phase electromagnetic degree of coupling is large, and when faults such as generation short circuit in windings, short circuit is met and to be impacted other normal phases, increases the difficulty of faults-tolerant control.In addition, adopt the motor of distributed winding or vulgar fraction groove winding, due to the spatial distribution problem of its winding, be difficult to carry out modularized design to motor.
Summary of the invention
The present invention seeks to solve conventional multi-phase permanent linear electric motors when there is the faults such as short circuit in winding, Fault Isolation difficulty is large, and the problem that the motor module design difficulty to cause because inter-phase electromagnetic degree of coupling is high is large, provide a kind of flat multi-phase permanent linear electric motors of high modularization.
The flat multi-phase permanent linear electric motors of high modularization of the present invention, it comprises k stator and permanent magnetic rotor, and during k=1 or 2, k=1, stator is arranged on the side of permanent magnetic rotor; During k=2, two stators are symmetricly set on the both sides of permanent magnetic rotor;
The air gap that length is L is left between stator and permanent magnetic rotor;
Stator is assembled by 2m stator modules, and m is the number of phases of motor, and 2m stator modules is assembled into the stator of a disk construction vertically; Each stator modules comprises stator core and concentratred winding; Two fault-tolerant teeths that stator core is arranged and an armature tooth, armature tooth is between two fault-tolerant teeths, and armature tooth length is in axial direction greater than fault-tolerant teeth length in axial direction; Above-mentioned tooth surrounds two stator slots jointly, and stator slot is arranged towards permanent magnetic rotor; Stator core and stator slot are plate shaped, and concentratred winding is embedded in stator slot, and are wound on armature tooth;
From left to right, often adjacent two stator modules form a phase module of motor, and the concentratred winding number of turn of two stator modules described in same phase module is identical, coiling direction is contrary;
Permanent magnetic rotor comprises mover core and permanent magnet, and mover core and permanent magnet are plate shaped, and permanent magnet is arranged on the surface of mover core towards stator; Permanent magnet magnetizes along the direction perpendicular to gas gap plane, and the magnetizing direction of adjacent permanent magnet is alternately contrary.
Advantage of the present invention: the present invention discloses a kind of flat multi-phase permanent linear electric motors of high modularization.By the employing of Winding Design and fault-tolerant teeth, make alternately to reach good Magnetic isolation effect, effectively contained that motor is nonserviceabled the impact of lower fault phase on other phases.The flat multi-phase permanent linear motor stator electric of high modularization adopts modularized design mode, is conducive to large-scale processing and manufacturing, and can changes rapidly when a certain module breaks down, and reduces the maintenance cost of system.This motor is that a kind of reliability is high, and power density is large, processing and manufacturing and the lower polyphase machine body construction scheme of maintenance cost.The present invention is applicable to the multi-phase permanent linear electric motors of more than three-phase and three-phase.
Accompanying drawing explanation
Fig. 1 is the structural representation of the flat multi-phase permanent linear electric motors of high modularization of the present invention; For unilateral structural electromotor;
Fig. 2 is the structural representation of the flat multi-phase permanent linear electric motors of high modularization of the present invention; For Double-edge type structural electromotor;
Fig. 3 is the magnetic line of force distribution in a phase stator winding electrifying situation;
Fig. 4 is Halbach formula Structure of mover schematic diagram;
Fig. 5 is axial charging formula Structure of mover schematic diagram.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1 to Fig. 3, the flat multi-phase permanent linear electric motors of high modularization described in present embodiment, it comprises k stator 1 and permanent magnetic rotor 2, k=1 or 2, during k=1, stator 1 is arranged on the side of permanent magnetic rotor 2; During k=2, two stators 1 are symmetricly set on the both sides of permanent magnetic rotor 2;
The air gap that length is L is left between stator 1 and permanent magnetic rotor 2;
Stator 1 is assembled by 2m stator modules, and m is the number of phases of motor, and 2m stator modules is assembled into the stator 1 of a disk construction vertically; Each stator modules comprises stator core 3 and concentratred winding 5; Two fault-tolerant teeth 3-1 and the armature tooth 3-2 that stator core 3 is arranged, armature tooth 3-2 is between two fault-tolerant teeth 3-1, and armature tooth 3-2 length is in axial direction greater than fault-tolerant teeth 3-1 length in axial direction; Above-mentioned tooth surrounds two stator slots 4 jointly, and stator slot 4 is arranged towards permanent magnetic rotor 2; Stator core 3 and stator slot 4 are plate shaped, and concentratred winding 5 is embedded in stator slot 4, and are wound on armature tooth 3-2;
From left to right, often adjacent two stator modules form a phase module of motor, and concentratred winding 5 number of turn of two stator modules described in same phase module is identical, coiling direction is contrary;
Permanent magnetic rotor 2 comprises mover core 6 and permanent magnet 7, and mover core 6 and permanent magnet 7 are plate shaped, and permanent magnet 7 is arranged on the surface of mover core 6 towards stator 1; Permanent magnet 7 magnetizes along the direction perpendicular to gas gap plane, and the magnetizing direction of adjacent permanent magnet 7 is alternately contrary.
See Fig. 1, k=1, be unilateral structural electromotor, the quantity of stator 1 is 1; Fig. 2, k=2 are Double-edge type structural electromotor, and the quantity of stator 1 is 2.Number from left to right, the 1st, 2 stator modules forms A phase module, and the 3rd, 4 stator modules forms B phase module, and the 5th, 6 stator modules forms C phase module, does not have magnetic coupling between different phase module.
Composition graphs 3 illustrates operation principle of the present invention.When the winding energising of a certain phase of stator 1, the magnetic line of force 8 forms closed-loop path by two armature tooth 3-2 in this phase two stator modules, air gap, mover core 6, permanent magnet 7, and forms closed-loop path without the stator modules of other phases.Therefore, described high modularization flat multi-phase permanent linear electric motors not there is not magnetic coupling between homophase.In like manner, when a certain phase winding of motor is short-circuited fault time, the magnetic line of force that short circuit phase winding produces also is closed by above-mentioned path, and the winding not via other phases forms closed-loop path, thus eliminate the impact of short circuit other normal phases relative, achieve good Magnetic isolation.In addition, due to the existence of two fault-tolerant teeth 3-1, the heating in winding that short circuit in winding brings effectively is controlled within the stator modules be short-circuited, and then favourable protects other normal stator modules.
Embodiment two: present embodiment is described further execution mode one, m >=3, annular concentratred winding 5 is concentratred winding more than three-phase or three-phase.
Adopt polyphase windings, the fault-tolerant operation performance of the flat multi-phase permanent linear electric motors of described high modularization can be improved.
Embodiment three: present embodiment is described further execution mode one, stator core 3 is made up of silicon steel sheet, amorphous state ferromagnetic composite material or SMC soft-magnetic composite material.
Mover core 6 is made up of single solid steel, silicon steel sheet, amorphous state ferromagnetic composite material or SMC soft-magnetic composite material.
Embodiment four: present embodiment is described below in conjunction with Fig. 4 and Fig. 5, present embodiment is described further execution mode one, and the number of poles of permanent magnetic rotor 2 is selected according to harmonic number magnetomotive in air gap.When permanent magnetic rotor 2 does relative motion relative to stator 1, permanent magnet 7 between stator 1 two ends is effectively work, the permanent magnet 7 be positioned at outside stator 1 end does not work, therefore, in present embodiment the number of poles of permanent magnetic rotor 2 corresponding be the quantity of permanent magnet 7 between stator 1 two ends.
Permanent magnetic rotor 2 adopts surface-mount type structure, Halbach structure or axial charging formula structure.
As shown in Figure 4, described Halbach formula mover is made up of the Halbach permanent 9 of some pieces of different magnetizing directions and mover support 10 Halbach formula Structure of mover, and Halbach permanent 9 is placed on a side surface of mover support 10; Axial charging formula mover as shown in Figure 5, described axial charging formula mover is by mover support 10, magnetic inductive block 11, and axial charging permanent magnet 12 forms, magnetic inductive block 11 and axial charging permanent magnet 12 are alternately arranged vertically and are placed on a side surface of mover support 10, and the magnetizing direction of adjacent axial charging permanent magnet 12 is alternately contrary; Mover support 10 is by the manufacture of the non-magnet material such as titanium alloy, aluminium alloy.
Claims (6)
1. the flat multi-phase permanent linear electric motors of high modularization, it is characterized in that, it comprises k stator (1) and permanent magnetic rotor (2), k=1 or 2, during k=1, stator (1) is arranged on the side of permanent magnetic rotor (2); During k=2, two stators (1) are symmetricly set on the both sides of permanent magnetic rotor (2);
The air gap that length is L is left between stator (1) and permanent magnetic rotor (2);
Stator (1) is assembled by 2m stator modules, and m is the number of phases of motor, and 2m stator modules is assembled into the stator (1) of a disk construction vertically; Each stator modules comprises stator core (3) and concentratred winding (5); Two fault-tolerant teeths (3-1) of the upper setting of stator core (3) and an armature tooth (3-2), armature tooth (3-2) is positioned between two fault-tolerant teeths (3-1), and armature tooth (3-2) length is in axial direction greater than fault-tolerant teeth (3-1) length in axial direction; Above-mentioned tooth surrounds two stator slots (4) jointly, and stator slot (4) is arranged towards permanent magnetic rotor (2); Stator core (3) and stator slot (4) are plate shaped, and concentratred winding (5) is embedded in stator slot (4), and are wound on armature tooth (3-2);
From left to right, often adjacent two stator modules form a phase module of motor, and concentratred winding (5) number of turn of two stator modules described in same phase module is identical, coiling direction is contrary;
Permanent magnetic rotor (2) comprises mover core (6) and permanent magnet (7), mover core (6) and permanent magnet (7) are plate shaped, and permanent magnet (7) is arranged on the surface of mover core (6) towards stator (1); Permanent magnet (7) magnetizes along the direction perpendicular to gas gap plane, and the magnetizing direction of adjacent permanent magnet (7) is alternately contrary.
2. the flat multi-phase permanent linear electric motors of high modularization according to claim 1, it is characterized in that, m >=3, annular concentratred winding (5) is concentratred winding more than three-phase or three-phase.
3. the flat multi-phase permanent linear electric motors of high modularization according to claim 1, it is characterized in that, stator core (3) is made up of silicon steel sheet, amorphous state ferromagnetic composite material or SMC soft-magnetic composite material.
4. the flat multi-phase permanent linear electric motors of high modularization according to claim 1, it is characterized in that, mover core (6) is made up of single solid steel, silicon steel sheet, amorphous state ferromagnetic composite material or SMC soft-magnetic composite material.
5. the flat multi-phase permanent linear electric motors of high modularization according to claim 1, it is characterized in that, the number of poles of permanent magnetic rotor (2) is selected according to harmonic number magnetomotive in air gap.
6. the flat multi-phase permanent linear electric motors of high modularization according to claim 1, is characterized in that, permanent magnetic rotor (2) adopts surface-mount type structure, Halbach structure or axial charging formula structure.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390537A (en) * | 2018-03-21 | 2018-08-10 | 哈尔滨工业大学 | Non-overlapping winding bilateral exchange linear motor |
| CN108599520A (en) * | 2018-06-22 | 2018-09-28 | 博众精工科技股份有限公司 | More mover moving-magnetic type Discrete control linear induction motor systems |
| CN108616207A (en) * | 2018-05-09 | 2018-10-02 | 同济大学 | A kind of long-stator linear motor winding for rail traffic |
| CN109004805A (en) * | 2018-08-03 | 2018-12-14 | 北京理工大学 | It is a kind of can differential operation double acting submodule permanent-magnetism linear motor |
| CN114362472A (en) * | 2021-12-28 | 2022-04-15 | 中国人民解放军海军工程大学 | Segmented splicing modular motor with intersegment magnetic field compensation winding and splicing compensation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1933304A (en) * | 2006-09-28 | 2007-03-21 | 哈尔滨工业大学 | Horizontal flux flat-plate type permanent-magnetic linear electric machine |
| WO2008009556A2 (en) * | 2006-07-17 | 2008-01-24 | Siemens Aktiengesellschaft | Electrical linear drive |
| CN101707404A (en) * | 2009-11-30 | 2010-05-12 | 哈尔滨工业大学 | Halbach array disk rotor of permanent magnet motor with composite structure |
| CN101814819A (en) * | 2010-05-11 | 2010-08-25 | 南通大学 | Independent sinusoidal driving permanent magnet synchronous fault-tolerant linear motor |
| CN101860174A (en) * | 2010-05-12 | 2010-10-13 | 东南大学 | Complementary type modularization permanent-magnetism linear motor and motor die set formed by same |
| CN102013786A (en) * | 2010-12-13 | 2011-04-13 | 东南大学 | Modular complementary type primary permanent magnet linear motor and motor module formed thereby |
| CN102938603A (en) * | 2012-11-26 | 2013-02-20 | 江苏大学 | Cylindrical permanent-magnet linear motor with modular C-shaped stator cores |
| CN104052234A (en) * | 2014-06-10 | 2014-09-17 | 江苏大学 | Five-phase cylindrical fault-tolerant permanent magnet linear actuator for driving vehicle electromagnetic suspension |
-
2015
- 2015-04-29 CN CN201510212416.4A patent/CN104767351B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008009556A2 (en) * | 2006-07-17 | 2008-01-24 | Siemens Aktiengesellschaft | Electrical linear drive |
| CN1933304A (en) * | 2006-09-28 | 2007-03-21 | 哈尔滨工业大学 | Horizontal flux flat-plate type permanent-magnetic linear electric machine |
| CN101707404A (en) * | 2009-11-30 | 2010-05-12 | 哈尔滨工业大学 | Halbach array disk rotor of permanent magnet motor with composite structure |
| CN101814819A (en) * | 2010-05-11 | 2010-08-25 | 南通大学 | Independent sinusoidal driving permanent magnet synchronous fault-tolerant linear motor |
| CN101860174A (en) * | 2010-05-12 | 2010-10-13 | 东南大学 | Complementary type modularization permanent-magnetism linear motor and motor die set formed by same |
| CN102013786A (en) * | 2010-12-13 | 2011-04-13 | 东南大学 | Modular complementary type primary permanent magnet linear motor and motor module formed thereby |
| CN102938603A (en) * | 2012-11-26 | 2013-02-20 | 江苏大学 | Cylindrical permanent-magnet linear motor with modular C-shaped stator cores |
| CN104052234A (en) * | 2014-06-10 | 2014-09-17 | 江苏大学 | Five-phase cylindrical fault-tolerant permanent magnet linear actuator for driving vehicle electromagnetic suspension |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390537A (en) * | 2018-03-21 | 2018-08-10 | 哈尔滨工业大学 | Non-overlapping winding bilateral exchange linear motor |
| CN108390537B (en) * | 2018-03-21 | 2019-12-31 | 哈尔滨工业大学 | Non-overlapping winding double-side AC linear motor |
| CN108616207A (en) * | 2018-05-09 | 2018-10-02 | 同济大学 | A kind of long-stator linear motor winding for rail traffic |
| CN108599520A (en) * | 2018-06-22 | 2018-09-28 | 博众精工科技股份有限公司 | More mover moving-magnetic type Discrete control linear induction motor systems |
| CN109004805A (en) * | 2018-08-03 | 2018-12-14 | 北京理工大学 | It is a kind of can differential operation double acting submodule permanent-magnetism linear motor |
| CN109004805B (en) * | 2018-08-03 | 2020-04-14 | 北京理工大学 | Double-acting sub-modular permanent magnet linear motor capable of running at differential speed |
| CN114362472A (en) * | 2021-12-28 | 2022-04-15 | 中国人民解放军海军工程大学 | Segmented splicing modular motor with intersegment magnetic field compensation winding and splicing compensation method thereof |
| CN114362472B (en) * | 2021-12-28 | 2023-04-25 | 中国人民解放军海军工程大学 | Segmented spliced modular linear motor with intersegmental magnetic field compensation windings and splicing compensation method thereof |
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