CN109842265A - A kind of Novel magnetic flux switching permanent-magnetism linear motor - Google Patents
A kind of Novel magnetic flux switching permanent-magnetism linear motor Download PDFInfo
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- CN109842265A CN109842265A CN201711194289.5A CN201711194289A CN109842265A CN 109842265 A CN109842265 A CN 109842265A CN 201711194289 A CN201711194289 A CN 201711194289A CN 109842265 A CN109842265 A CN 109842265A
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Abstract
A kind of Novel magnetic flux switching permanent-magnetism linear motor, is related to motor field.Motor includes primary and secondary, has air gap between primary and secondary.Primary includes primary iron core, permanent magnet and winding.Primary iron core is made of back yoke, long tooth and short tooth, forms 2m slot (m is positive integer).In primary iron core short tooth, the polarity of permanent magnet is alternately arranged m+1 block permanent magnet Surface Mount according to N-S-N-S.Concentratred winding is wound in primary iron core long tooth.Secondary is magnetic conductive iron and gap composition with salient-pole structure.The primary of this motor is overall structure, increases reliability, and secondary uses discrete topology, reduces secondary weight and improves permanent magnet utilization rate by primary and secondary rational design, to reduce the manufacturing cost of motor.
Description
Technical field
The invention belongs to motor field, in particular to a kind of Novel magnetic flux switches permanent-magnetism linear motor.
Background technique
Direct-drive technology based on linear motor eliminates intermediate complicated transmission mechanism, in lathe, elevator isoline
Applications are moved, and each field of production and life is just gradually expanded in its application field.However, due to traditional permanent magnetism
The permanent magnet and armature winding of linear motor are separately mounted to primary and secondary, lead to the system of the motor in long-distance transportation system
It makes relatively high with maintenance cost.Magnetic flux switching permanent-magnetism linear motor permanent magnet and volume winding are respectively positioned on primary, secondary structure letter
It is single, have many advantages, such as that power density is high, high-efficient, structure is simple, easy to maintain.But at the beginning of traditional magnetic flux switching permanent-magnetism linear motor
Grade is discrete topology, while secondary yoke portion iron core proportion is excessive, leads to the waste of material and the raising of cost, limits electricity
The application of machine.
In order to further increase the power density of magnetic flux switching straight line motor and reduce the manufacturing cost of motor, improve simultaneously
The structure of primary discretization, the invention proposes a kind of Novel magnetic fluxes to switch permanent-magnetism linear motor.
Summary of the invention
The invention reside in provide the Novel magnetic flux switching that a kind of permanent magnet utilization rate is high, primary is integrated, processing cost is low
Permanent-magnetism linear motor.
The specific technical solution of the present invention is as follows:
Motor includes primary (1) and secondary (2), has air gap (3) between primary (1) and secondary (2).Primary (1) includes
Primary iron core (1-1), permanent magnet (1-2) and winding (1-3).Primary iron core is by back yoke (1-1-1), long tooth (1-1-2) and short tooth
(1-1-3) is constituted, and forms 2m slot (m is positive integer).Pole shoe can be set on primary iron core short tooth (1-1-3), be conducive to
Reduce leakage field, while keeping permanent magnet barbola work simple.
M+1 block permanent magnet (1-2) Surface Mount is on primary iron core short tooth (1-1-3), and permanent magnet (1-2) magnetizes along normal direction, pole
Property is alternately arranged according to N-S-N-S.
Winding (1-3) uses concentratred winding, coil winding is on primary iron core long tooth (1-1-2).With same permanent magnet
Two (1-2) adjacent slots, phase is identical.It therefore, can will be with same permanent magnet (1- in the star-like figure of potential vector
2) two adjacent slots are equivalent to a slot, and Double Layer Winding is arranged in this slot.
Secondary is magnetic conductive iron (2-1) and gap (2-2) composition with salient-pole structure.Between between secondary iron core (2-1)
Gap can be air gap, or non-magnetic connector.
Primary slot number Ns and secondary conducting magnet core number Nr meet following relationship:
In formula, m is the number of phases of motor, and k is natural number.
The present invention has the following beneficial effects: compared with prior art
Compared with existing magnetic flux switches permanent-magnetism linear motor, technical characteristics are the present invention:
Primary of the present invention is integrated, and avoids discretization mechanism, simple and reliable for structure, is suitble to do mover.
Secondary is discretization core structure, reduces motor weight and processing cost.
By the rational design of primary and secondary, permanent magnet utilization rate is improved, reduces permanent magnet dosage, further reduced
The processing and manufacturing cost of motor.
Detailed description of the invention
Fig. 1 is one structural schematic diagram of the embodiment of the present invention.
Fig. 2 is that A phase winding linkage magnetic linkage reaches forward position schematic diagram in the embodiment of the present invention one.
Fig. 3 is that A phase winding linkage magnetic linkage reaches reverse position schematic diagram in the embodiment of the present invention one.
Fig. 4 is two structural schematic diagram of the embodiment of the present invention.
Fig. 5 is three structural schematic diagram of the embodiment of the present invention.
In figure, 1- is primary, 2- grade, 1-1 primary iron core short tooth, 1-2 primary iron core back yoke, 1-3 primary iron core long tooth, 1-
4 permanent magnets, 1-5 winding, 2-1 grade iron core, gap between 2-2 grade iron core
Specific embodiment
Embodiment one:
Embodiment is described with reference to Fig. 1.
Novel magnetic flux switching permanent-magnetism linear motor of the invention, motor are primary (1) and secondary including primary (1) and secondary (2)
There are air gap (3) between grade (2).According to application demand, primary can be used as to stator, secondary trigger switch can also will be first
Grade trigger switch, secondary are used as stator.
Primary (1) includes primary iron core (1-1), permanent magnet (1-2) and winding (1-3).Primary iron core (1-1) is silicon steel sheet
It is transversely stacked and forms, including back yoke (1-1-1), long tooth (1-1-2) and short tooth (1-1-3) three parts, form 12 slots.It can be with
Pole shoe is set on primary iron core short tooth (1-1-3), is conducive to reduce leakage field, while keeping permanent magnet barbola work simple.
7 pieces of permanent magnet (1-2) Surface Mounts are on primary iron core short tooth (1-1-3), and permanent magnet (1-2) magnetizes along normal direction, polarity
It is alternately arranged according to N-S-N-S.
Winding (1-3) uses concentratred winding, is linked in sequence according to A-B-C-A-B-C, coil winding is in primary iron core long tooth
On (1-1-2).Two slots adjacent with same permanent magnet (1-2), phase is identical.Therefore in the star-like figure of potential vector
In, can will be adjacent with same permanent magnet (1-2) two slots be equivalent to a slot, Double Layer Winding is set in this slot.
Secondary is magnetic conductive iron (2-1) and gap (2-2) composition with salient-pole structure.Secondary iron core (2-1) is also by silicon
Steel disc is transversely stacked and forms, and the gap between iron core can be air gap, or non-magnetic connector.
In order to illustrate the working principle of the bright motor of this law, the magnetic linkage signal of A phase winding linkage is set forth in Fig. 2 and Fig. 3
Figure.When primary moves to position shown in Fig. 2, the magnetic linkage that the permanent magnet (1-2) to magnetize downwards issues is through air gap (3), secondary
Iron core (2-1), air gap (3), primary iron core long tooth (1-1-2), primary iron core back yoke (1-1-1), primary iron core short tooth (1-1-3)
Closed circuit is formed, the magnetic linkage of A phase winding linkage reaches positive maximum value at this time.When primary moves to position shown in Fig. 3,
The magnetic linkage that the permanent magnet (1-2) to magnetize upwards issues is through primary iron core short tooth (1-1-3), primary iron core back yoke (1-1-1), primary
Iron core long tooth (1-1-2), air gap (3), secondary iron core (2-1), air gap (3) form closed circuit, at this time the magnetic of A phase winding linkage
Chain reaches reversed maximum value.When mobile one secondary iron core of electric motor primary and the distance in gap, the magnetic linkage polarity of A phase winding linkage
Variation twice, meets magnetic flux switch operating principle.
Embodiment two:
Embodiment is described with reference to Fig. 4.
As shown in Figure 2, embodiment two and the difference of embodiment one are, pole shoe is arranged in electric motor primary iron core short tooth, favorably
In reduction leakage field, while keeping permanent magnet barbola work simple.
Embodiment three:
Embodiment is described with reference to Fig. 5.
As shown in figure 5, embodiment three and the difference of embodiment one are, motor is dual-side flat plate type structure, electric motor primary
Including two layers, it is divided into upper layer primary and lower layer is primary.Be wound with armature winding in the opposite slot of two primary, they be with mutually around
Group, but 180 ° of phase mutual deviation of armature winding in two primary, i.e., in wherein one primary slot, winding construction A-X, separately
In the corresponding slot of one primary, winding X-A.Winding can be connected in series or in parallel in two slots.
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 practical range of the 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, protection category of the invention all should belong to.
Claims (5)
1. a kind of Novel magnetic flux switches permanent-magnetism linear motor, it is characterised in that: motor includes primary (1) and secondary (2), primary
(1) there are air gap (3) between secondary (2).Primary (1) includes primary iron core (1-1), permanent magnet (1-2) and winding (1-3).
Primary iron core is made of back yoke (1-1-1), long tooth (1-1-2) and short tooth (1-1-3), forms 2m slot (m is positive integer).m+1
On primary iron core short tooth (1-1-1), permanent magnet (1-2) magnetizes block permanent magnet (1-2) Surface Mount along normal direction, hands over according to N-S-N-S
For arrangement.Concentratred winding (1-3) is wound on primary iron core long tooth (1-1-2).Secondary is the magnetic conductive iron with salient-pole structure
(2-1) and gap (2-2) composition.
2. a kind of Novel magnetic flux according to claim 1 switches permanent-magnetism linear motor, it is characterised in that: for three-phase motor or
Polyphase machine, primary slot number Ns and secondary conducting magnet core number Nr meet following relationship:
In formula, m is the number of phases of motor, and k is natural number.
3. a kind of Novel magnetic flux according to claim 1 switches permanent-magnetism linear motor, it is characterised in that: with same permanent magnet
Two (1-2) adjacent slots, phase is identical.
4. a kind of Novel magnetic flux switching permanent-magnetism linear motor shown according to claim 1, it is characterised in that: can be in primary iron
Pole shoe is set in core short tooth (1-1-3), is conducive to reduce leakage field, while keeping permanent magnet barbola work simple.
5. a kind of Novel magnetic flux according to claim 1 switches permanent-magnetism linear motor, it is characterised in that: secondary iron core (2-
1) gap between can be air gap, or non-magnetic connector.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711194289.5A CN109842265A (en) | 2017-11-24 | 2017-11-24 | A kind of Novel magnetic flux switching permanent-magnetism linear motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711194289.5A CN109842265A (en) | 2017-11-24 | 2017-11-24 | A kind of Novel magnetic flux switching permanent-magnetism linear motor |
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| CN201711194289.5A Pending CN109842265A (en) | 2017-11-24 | 2017-11-24 | A kind of Novel magnetic flux switching permanent-magnetism linear motor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110545021A (en) * | 2019-09-26 | 2019-12-06 | 哈尔滨工业大学 | mixed excitation multi-phase reluctance motor and power generation system |
| CN111071268A (en) * | 2019-12-30 | 2020-04-28 | 南京航空航天大学 | Secondary block type magnetic flux switching linear motor driven train system |
| WO2021103246A1 (en) * | 2019-11-26 | 2021-06-03 | 江苏大学 | Primary permanent magnet bilateral linear magnetic field modulation electric motor and low magnetic resistance design method therefor |
| CN113054767A (en) * | 2021-03-05 | 2021-06-29 | 华中科技大学 | Stator permanent magnet type rotor iron core block type linear oscillation motor and unit group |
| CN113178999A (en) * | 2021-04-28 | 2021-07-27 | 华中科技大学 | Stator permanent magnet type linear oscillation motor |
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| JP2003032994A (en) * | 2001-05-07 | 2003-01-31 | Tsubakimoto Chain Co | Linear motor |
| CN203071787U (en) * | 2012-08-30 | 2013-07-17 | 江苏大学 | Single-magnetic-pole flux-reversal permanent magnet linear motor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110545021A (en) * | 2019-09-26 | 2019-12-06 | 哈尔滨工业大学 | mixed excitation multi-phase reluctance motor and power generation system |
| CN110545021B (en) * | 2019-09-26 | 2020-11-10 | 哈尔滨工业大学 | Mixed excitation multi-phase reluctance motor and power generation system |
| WO2021103246A1 (en) * | 2019-11-26 | 2021-06-03 | 江苏大学 | Primary permanent magnet bilateral linear magnetic field modulation electric motor and low magnetic resistance design method therefor |
| CN111071268A (en) * | 2019-12-30 | 2020-04-28 | 南京航空航天大学 | Secondary block type magnetic flux switching linear motor driven train system |
| CN113054767A (en) * | 2021-03-05 | 2021-06-29 | 华中科技大学 | Stator permanent magnet type rotor iron core block type linear oscillation motor and unit group |
| CN113178999A (en) * | 2021-04-28 | 2021-07-27 | 华中科技大学 | Stator permanent magnet type linear oscillation motor |
| CN113178999B (en) * | 2021-04-28 | 2024-04-19 | 华中科技大学 | Stator permanent magnet type linear oscillating motor |
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Application publication date: 20190604 |