CN108365731A - A kind of long primary permanent magnet linear synchronous motor of low-thrust fluctuation - Google Patents
A kind of long primary permanent magnet linear synchronous motor of low-thrust fluctuation Download PDFInfo
- Publication number
- CN108365731A CN108365731A CN201810230897.5A CN201810230897A CN108365731A CN 108365731 A CN108365731 A CN 108365731A CN 201810230897 A CN201810230897 A CN 201810230897A CN 108365731 A CN108365731 A CN 108365731A
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- China
- Prior art keywords
- permanent magnet
- primary
- iron core
- component
- synchronous motor
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
- H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
Abstract
The present invention provides a kind of low-thrust fluctuation long primary permanent magnet linear synchronous motor, belongs to technical field of motors.Motor includes primary component and secondary component.Primary component is used as stator, is made of primary iron core and armature winding.The longitudinal length of primary component is much larger than secondary component.It slots on primary iron core, armature winding is set in slot.Secondary component trigger switch is made of permanent magnet, secondary iron core.It is provided with every magnetic area in the middle part of secondary iron core.Distance is not influenced by every magnetic area between permanent magnet.It is air gap between primary component and secondary component.The structure is conducive to inhibit the end effect and slot effect of motor, reduces the force oscillation in long primary permanent magnet linear synchronous motor.
Description
Technical field
The invention belongs to motor field, more particularly to a kind of low-thrust fluctuates long primary permanent magnet linear synchronous motor.
Background technology
The characteristics of the characteristics of linear motor drive technology is to leave out intermediate complicated drive mechanism, magneto is power density
The advantages of high, small and light weight, permanent magnetic linear synchronous motor has both the two, application field is gradually expanded.Linear motor
It can be the short long secondary forms of primary, can also be long primary short secondary forms.It is long primary compared to the short long secondary forms of primary
Secondary (mover) light weight of short secondary forms motor, detent force is small, is suitable for high-speed, high precision application scenario.However, using
The linear motor of long primary short secondary forms still has end effect, and magnetic field harmonics component is caused to increase, cause detent force and
Force oscillation increases, and limits the application of the type motor.In consideration of it, reducing the force oscillation of motor becomes such motor research
And the critical issue that must be solved in application.
Invention content
The present invention is to solve the problems, such as that existing long primary short secondary permanent magnetic linear synchronous motor force oscillation is big, is proposed a kind of
The short secondary permanent magnetic linear synchronous motor of modularization.The specific technical solution of the present invention is as follows：
The present invention provides a kind of low-thrust fluctuation long primary permanent magnet linear synchronous motor, including primary component and secondary group
Part.Motor secondary number of poles is even number, and primary component primary slot number corresponding in secondary component coupling regime is odd number.
Primary component is used as stator, is made of primary iron core (1) and armature winding (2), the longitudinal length of primary component is remote
More than secondary component.It slots on primary iron core (1), iron core is divided into teeth portion (1-1) and yoke portion (1-2) after fluting, and setting is electric in slot
Centralization may be used in pivot winding (2), armature winding (2), can also use distribution.
Secondary component trigger switch is made of permanent magnet (4) and secondary iron core (3), and permanent magnet (4) can be surface-mount type,
Or it is embedded, adjacent two pieces of permanent magnet magnetizing directions are opposite.It is provided with every magnetic area (5), forever in the middle part of secondary iron core (3)
Distance is not influenced by every magnetic area (5) between magnet.It can be air gap every magnetic area (5), may be set to be non-magnet material
Connector.When permanent magnet uses surface-mount type structure, every the width of magnetic area (5) and permanent magnet (4) gap in the middle part of secondary iron core
It is of same size.When permanent magnet uses embedded structure, the width in the middle part of secondary iron core every magnetic area (5) is less than permanent magnet
(4) width of spacing.It is air gap (6) between primary component and secondary component.
The further design of the present invention is：When permanent magnet (4) uses surface-mount type structure, secondary iron core (3) longitudinal end
Portion is aligned with permanent magnet (4) longitudinal end, need not additionally extend iron core (3) end, to further increase having for electric mover
Stroke is imitated, the pushing force density of motor is improved.
The present invention has the advantages that compared with prior art：
(1) by being arranged every magnetic area in the middle part of secondary iron core, secondary is divided into two independent unit modules.Two
180 ° of electrical angles of detent force waveform mutual deviation (slot pitch indicate 360 ° of electrical angles) of unit module, the fundamental wave in detent force waveform
It is offset with odd harmonics, to which the total detent force of motor is suppressed to reduced levels；
(2) width in the middle part of secondary iron core every magnetic area is smaller, effectively reduces the influence to motor average thrust.Secondary grade
Number is more, smaller every influence of the magnetic area to motor average thrust.
Description of the drawings
Fig. 1 is that one low-thrust of embodiment of the present invention fluctuates long primary permanent magnet linear synchronous motor structural schematic diagram.
Fig. 2 is the long primary permanent magnet linear synchronous motor structural schematic diagram of tradition.
Fig. 3 is that two low-thrust of embodiment of the present invention fluctuates long primary permanent magnet linear synchronous motor structural schematic diagram.
In figure, 1-1：Primary iron core teeth portion；1-2：Primary iron core yoke part；2：Armature winding；3：Secondary iron core；4：Permanent magnetism
Body；5：Every magnetic area；6：Air gap
Specific implementation mode
Embodiment one：
As shown in Figure 1, low-thrust, which fluctuates long primary permanent magnet linear synchronous motor, uses 9 slot, 12 pole structure, including primary group
Part and secondary component.Primary component is used as stator, is made of primary iron core (1) and armature winding (2), and the longitudinal direction of primary component is long
Degree is much larger than secondary component.It slots on the primary iron core (1) made of silicon steel plate packing, iron core (1) is divided into teeth portion (1- after fluting
1) with yoke portion (1-2).Primary iron core (1) is provided with 18 slots altogether, and armature winding (2) is arranged in slot, and armature winding (2) is collected using double-deck
Chinese style, coil are linked in sequence according to A-X-B-Y-C-Z.
Secondary component trigger switch is made of permanent magnet (4) and secondary iron core (3), and permanent magnet (4) magnetizes along normal direction, phase
Adjacent two pieces of permanent magnet (4) magnetizing directions on the contrary, Surface Mount in secondary iron core (3).Secondary iron core (3) longitudinal end and permanent magnet (4)
Longitudinal end is aligned.Be provided in the middle part of secondary iron core (3) distance between magnetic area (5), permanent magnet (4) being made of air gap not by
Every the influence of magnetic area, that is, secondary pole span is set before and after magnetic area and is remained unchanged.Every the width and permanent magnet of magnetic area (5)
(4) gap is of same size.It is air gap (6) between primary component and secondary component.
Compared with the long primary permanent magnet body linear synchronous motor (as shown in Figure 2) of traditional structure, the present invention passes through in secondary iron
It is arranged every magnetic area in the middle part of core, secondary is divided into two independent unit modules.The detent force waveform of two unit modules is mutual
Poor 180 ° of electrical angles (slot pitch indicates 360 ° of electrical angles), fundamental wave and odd harmonics in detent force waveform are offset,
To which the total detent force of motor is suppressed to reduced levels.Meanwhile the width in the middle part of secondary iron core every magnetic area is smaller, effectively reduces
Influence to motor average thrust.
Embodiment two：
The present embodiment and the difference of embodiment one are：As shown in figure 3, motor permanent magnet (4) uses embedded structure, permanent magnetism
Body (4) magnetizes along longitudinal direction, distributes alternately with secondary iron core (3).It is less than permanent magnet every the width of magnetic area (5) in the middle part of secondary iron core
(4) width of spacing.
It should be pointed out that above-mentioned specific implementation case is only the more typical case study on implementation of the present invention, not use
To limit the practical range of the present invention.Under the inspiration of the present invention, the common skill number personnel of this field do equivalent replace to the present invention
The technical solution obtained is changed and improved, the protection category of the present invention should be all belonged to.
Claims (6)
1. a kind of low-thrust fluctuates long primary permanent magnet linear synchronous motor, including primary component and secondary component.Primary component is used
Make stator, is made of primary iron core (1) and armature winding (2).The longitudinal length of primary component is much larger than secondary component.Primary iron
Core is slotted on (1), and iron core is divided into teeth portion (1-1) and yoke portion (1-2) after fluting, and armature winding (2) is arranged in slot.Secondary component is used
Trigger switch is made of permanent magnet (4) and secondary iron core (3).Permanent magnet (4) can be surface-mount type, or it is embedded, it is adjacent
Two pieces of permanent magnet magnetizing directions are opposite.Be provided in the middle part of secondary iron core (3) between magnetic area (5), permanent magnet (4) distance not by every
The influence of magnetic area (5).It is air gap (6) between primary component and secondary component.
2. a kind of low-thrust according to claim 1 fluctuates long primary permanent magnet linear synchronous motor, it is characterised in that：Motor
Secondary number of poles is even number, and primary component primary slot number corresponding in secondary component coupling regime is odd number.
3. a kind of low-thrust according to claim 1 fluctuates long primary permanent magnet linear synchronous motor, it is characterised in that：When forever
When magnet uses surface-mount type structure, every the of same size of the width of magnetic area (5) and permanent magnet (4) gap in the middle part of secondary iron core.
4. a kind of low-thrust according to claim 1 fluctuates long primary permanent magnet linear synchronous motor, it is characterised in that：When forever
When magnet uses embedded structure, it is less than the width of permanent magnet (4) spacing in the middle part of secondary iron core every the width of magnetic area (5).
5. a kind of low-thrust according to claim 1 fluctuates long primary permanent magnet linear synchronous motor, it is characterised in that：When forever
When magnet (4) uses surface-mount type structure, secondary iron core (3) longitudinal end is aligned with permanent magnet (4) longitudinal end, need not be additional
Extend iron core (3) end.
6. a kind of low-thrust according to claim 1 fluctuates long primary permanent magnet linear synchronous motor, it is characterised in that：It is secondary
In the middle part of iron core (3) can be air gap every magnetic area (5), may be set to be non-magnet material connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810230897.5A CN108365731A (en) | 2018-03-20 | 2018-03-20 | A kind of long primary permanent magnet linear synchronous motor of low-thrust fluctuation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810230897.5A CN108365731A (en) | 2018-03-20 | 2018-03-20 | A kind of long primary permanent magnet linear synchronous motor of low-thrust fluctuation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108365731A true CN108365731A (en) | 2018-08-03 |
Family
ID=63000684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810230897.5A Pending CN108365731A (en) | 2018-03-20 | 2018-03-20 | A kind of long primary permanent magnet linear synchronous motor of low-thrust fluctuation |
Country Status (1)
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| CN (1) | CN108365731A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109698600A (en) * | 2018-12-10 | 2019-04-30 | 中国科学院电工研究所 | A kind of linear motor with auxiliary weak magnetic structure |
| CN113765241A (en) * | 2021-09-23 | 2021-12-07 | 中铁第四勘察设计院集团有限公司 | Stator core for normally-conducting magnetic suspension and linear synchronous motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002119040A (en) * | 2000-10-12 | 2002-04-19 | Yaskawa Electric Corp | Linear motor |
| JP2009171638A (en) * | 2008-01-10 | 2009-07-30 | Mitsubishi Electric Corp | Linear motor |
| CN102931802A (en) * | 2012-11-22 | 2013-02-13 | 江苏大学 | Complementary-type fault-tolerant linear motor |
| CN107493004A (en) * | 2017-09-22 | 2017-12-19 | 南京航空航天大学 | A kind of modularization cylindrical permanent linear synchronous motor |
| CN107508449A (en) * | 2017-08-18 | 2017-12-22 | 南京航空航天大学 | Unit motor module permanent magnetic linear synchronous motor |
-
2018
- 2018-03-20 CN CN201810230897.5A patent/CN108365731A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002119040A (en) * | 2000-10-12 | 2002-04-19 | Yaskawa Electric Corp | Linear motor |
| JP2009171638A (en) * | 2008-01-10 | 2009-07-30 | Mitsubishi Electric Corp | Linear motor |
| CN102931802A (en) * | 2012-11-22 | 2013-02-13 | 江苏大学 | Complementary-type fault-tolerant linear motor |
| CN107508449A (en) * | 2017-08-18 | 2017-12-22 | 南京航空航天大学 | Unit motor module permanent magnetic linear synchronous motor |
| CN107493004A (en) * | 2017-09-22 | 2017-12-19 | 南京航空航天大学 | A kind of modularization cylindrical permanent linear synchronous motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109698600A (en) * | 2018-12-10 | 2019-04-30 | 中国科学院电工研究所 | A kind of linear motor with auxiliary weak magnetic structure |
| CN113765241A (en) * | 2021-09-23 | 2021-12-07 | 中铁第四勘察设计院集团有限公司 | Stator core for normally-conducting magnetic suspension and linear synchronous motor |
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Application publication date: 20180803 |