CN108736592B - Linear motor device and magnetic suspension train - Google Patents
Linear motor device and magnetic suspension train Download PDFInfo
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- CN108736592B CN108736592B CN201810905694.1A CN201810905694A CN108736592B CN 108736592 B CN108736592 B CN 108736592B CN 201810905694 A CN201810905694 A CN 201810905694A CN 108736592 B CN108736592 B CN 108736592B
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- stator
- linear motor
- iron core
- hollow
- suction force
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- 239000000725 suspension Substances 0.000 title description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000004804 winding Methods 0.000 claims abstract description 24
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 13
- 239000004020 conductor Substances 0.000 claims description 19
- 238000005339 levitation Methods 0.000 claims description 15
- 238000003475 lamination Methods 0.000 claims description 9
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 7
- 238000010030 laminating Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The invention discloses a linear motor device and a maglev train, wherein the linear motor device comprises: the linear motor comprises a linear motor rotor (1), a stator winding (2) and a stator; wherein the stator includes: a composite structure formed by a hollow stator (3) and an iron core stator (4); -said hollow stator (3) for providing a forward driving force; the iron core stator (4) is used for providing forward driving force and upward normal suction force. The scheme of the invention can solve the problem that the normal suction force of the existing iron core-free linear motor is too large to be adjusted, and the normal suction force of the iron core-free linear motor is too small to be utilized, so that the reliability is low, and the effect of improving the reliability is achieved.
Description
Technical Field
The invention belongs to the technical field of magnetic suspension, and particularly relates to a linear motor device and a magnetic suspension train, in particular to a linear motor with adjustable normal force and a magnetic suspension train with the linear motor with the adjustable normal force.
Background
Along with the rapid development of magnetic levitation trains in high-speed rail transportation industry, the requirements on driving motors thereof are higher and higher, the motor schemes of all countries in the world are mainly concentrated on two schemes of permanent magnet synchronous and alternating current asynchronous linear motors, and the permanent magnet linear motors are more and more favored by industries in consideration of the limitations of energy consumption, highest speed and the like.
Most of the existing permanent magnet driving motors for the magnetic levitation trains have iron core structures, so that the normal suction force of the motors is large and is not easy to adjust, the normal suction force cannot be changed into available forward force, and hidden danger is brought to the safe operation of the trains at high speed and ultra-high speed; if the coreless structure is adopted, the suction force between the stator and the rotor is very small, when the train is heavy, great pressure can be brought to the suspension mechanism, and meanwhile, the coreless structure can cause the problems of large motor current, low efficiency and the like.
Disclosure of Invention
The first object of the present invention is to solve the above-mentioned drawbacks, and provide a linear motor device and a magnetic levitation train, so as to solve the problem that the normal suction force of the existing linear motor with iron core is too large to be adjusted, and the normal suction force of the linear motor without iron core is too small to be utilized, so that the reliability is low, and achieve the effect of improving the reliability.
A second object of the present invention is to provide a linear motor device and a magnetic levitation train, which solve the problems of low efficiency, high current and high energy consumption of a coreless linear motor, and achieve the effects of improving the efficiency of the motor and reducing the current and energy consumption.
The present invention provides a linear motor device, comprising: the linear motor comprises a rotor, a stator winding and a stator; wherein the stator includes: a composite structure formed by a hollow stator and a core stator; the hollow stator is used for providing forward driving force; the iron core stator is used for providing forward driving force and upward normal suction force.
Optionally, the magnitude of the normal suction force can be adjusted by adjusting the duty ratio of the core stator in the composite structure.
Optionally, in the composite structure: the iron core stator is divided into two parts, and the two parts of the iron core stator are positioned at two sides of the hollow stator; or the hollow stator is divided into two parts, and the two parts of the hollow stator are positioned at two sides of the iron core stator.
Optionally, the magnetic conductive material of the iron core stator includes: and the magnetic conduction piece is formed by laminating silicon steel sheets with set thickness according to set lamination coefficients.
Optionally, the set thickness is less than or equal to 0.35mm; and/or, the set stacking coefficient is greater than or equal to 0.975.
Optionally, the hollow stator includes: the heat conducting member is made of a heat conducting material which has a set heat conducting coefficient and is non-magnetic.
Optionally, the stator winding, the hollow stator and the iron core stator are fixedly installed.
In accordance with another aspect of the present invention, there is provided a magnetic levitation train comprising: the linear motor device described above.
According to the scheme, through optimizing the structural forms of the stator and the rotor of the linear motor, the electromagnet effect between the stator and the rotor is utilized more fully, the normal suction force required by the system is generated between the stator and the rotor of the linear motor on the premise of not reducing the thrust of the linear motor, the reliability of motor driving is improved, the thrust is correspondingly increased on the premise of not increasing current and energy consumption, and therefore the service efficiency of the motor is increased, and the energy consumption is saved.
Further, according to the scheme, the normal suction force is adjusted to balance the system structure, and the increased normal suction force can provide a forward force for the suspension of the vehicle, so that the suspension structure is lightened; and the current demand in the linear motor winding is reduced, the heating of the linear motor winding is reduced, the use efficiency of the system is improved, and the safety and reliability of the vehicle are enhanced.
Therefore, the scheme of the invention makes full use of the electromagnet effect between the stator and the rotor by optimizing the structural form of the stator and the rotor of the linear motor, so that the normal suction force required by the system is generated between the stator and the rotor of the linear motor, and the problems that the normal suction force of the conventional linear motor with an iron core is too large to be adjusted, and the normal suction force of the linear motor without the iron core is too small to be utilized, so that the reliability is low are solved, the defects of low reliability, low motor efficiency and high energy consumption in the prior art are overcome, and the beneficial effects of high reliability, high motor efficiency and low energy consumption are realized.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic side view of a linear motor according to an embodiment of the linear motor apparatus of the present invention;
FIG. 2 is a schematic diagram of a linear motor stator with a two-sided core structure according to an embodiment of the linear motor apparatus of the present invention;
fig. 3 is a schematic diagram of a linear motor stator with an intermediate core structure according to an embodiment of the linear motor device of the present invention.
In the embodiment of the present invention, reference numerals are as follows, in combination with the accompanying drawings:
1-a linear motor rotor; 2-stator windings; 3-hollow stator; 4-core stator.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
According to an embodiment of the present invention, there is provided a linear motor device. Referring to fig. 1 to 3, a schematic structural view of an embodiment of the linear motor device of the present invention is shown. The linear motor device may include: the linear motor comprises a linear motor rotor 1, a stator winding 2 and a stator.
Wherein, the stator may include: a composite structure formed by a hollow stator 3 and a core stator 4. The hollow stator 3 may be used to provide a forward driving force. The core stator 4 may be used to provide forward driving force and upward normal suction.
For example: the electromagnet effect is formed between the stator parts with magnetic conduction at the two ends and the rotor, larger thrust and normal suction force can be simultaneously generated, the middle non-magnetic conduction part only generates thrust, and the required normal force can be adjusted by adjusting the thickness of the magnetic conduction parts at the two sides. The design scheme can effectively shorten the lamination thickness of the motor, reduce the effective length of the winding and the copper consumption, and simultaneously reduce the usage amount of the magnetic steel along with the reduction of the lamination thickness, so that the total effective material consumption is greatly reduced.
Therefore, by adopting a composite structure formed by the hollow stator 3 and the iron core stator 4 as a stator, the structure forms of the stator and the rotor of the linear motor are optimized, so that the electromagnet effect between the stator and the rotor is more fully utilized, the normal suction force required by the system is generated between the stator and the rotor of the linear motor on the premise of not reducing the thrust of the linear motor, correspondingly, the thrust is correspondingly increased on the premise of not increasing the current and the energy consumption, and the service efficiency of the motor is increased and the energy consumption is saved; for a maglev train, the increased normal suction force can provide a forward force for levitation of the vehicle, thereby reducing the pressure requirement of the levitation system and alleviating the levitation structure; the current demand in the linear motor winding is reduced, so that the purchase cost of the motor and the controller is reduced; the heating of the linear motor winding is reduced, the whole system is optimized, the service efficiency of the system is improved, and the safety and reliability of the vehicle are enhanced.
Alternatively, the magnitude of the normal suction force can be adjusted by adjusting the duty ratio of the core stator 4 in the composite structure.
For example: the effect of adjusting the normal suction force can be achieved by adjusting the duty ratio of the linear motor with the iron core.
Therefore, the normal suction force is adjusted through structural adjustment, the system structure is balanced, and the motor performance is improved.
Optionally, in the composite structure: the iron core stator 4 is divided into two parts, and the two parts of the iron core stator 4 are positioned at two sides of the hollow stator 3; alternatively, the hollow stator 3 is divided into two parts, and the two parts of the hollow stator 3 are positioned at two sides of the iron core stator 4.
For example: the iron core structure can be positioned at two sides or the middle or any position of the motor. If the iron core structure is arranged, the iron core structure can be arranged at two sides or the middle or any position of the motor.
For example: by adjusting the motor stator, the motor stator is changed into a composite structure with an iron core and a non-iron core, fig. 2 and 3 are respectively two composite structures, coil fixing magnetic conductive materials are respectively positioned at two sides or in the middle of a coil fixing frame, an iron core linear motor structure is formed, and forward driving force and upward normal suction force are provided; the coil fixing non-magnetic conductive material is respectively positioned in the middle or at two sides, only provides forward driving force, and adjusts the normal suction force of the linear motor by adjusting the duty ratio of the magnetic conductive material.
Therefore, the distribution mode of the iron core stator and the hollow stator in the composite structure is adjusted, so that various application requirements can be met, the flexibility is good, and the reliability is high.
Optionally, the magnetic conductive material of the iron core stator 4 may include: and the magnetic conduction piece is formed by laminating silicon steel sheets with set thickness according to set lamination coefficients.
Preferably, the set thickness is less than or equal to 0.35mm; and/or, the set stacking coefficient is greater than or equal to 0.975.
For example: the magnetic conductive material part is formed by laminating silicon steel sheets with the thickness of not more than 0.35mm, and the lamination coefficient is not less than 0.975 so as to reduce eddy current loss generated during operation.
Therefore, the fixed part of the stator winding with the iron core is made of magnetic conductive materials, preferably silicon steel sheets, so that eddy current loss can be reduced.
Alternatively, the hollow stator 3 may include: the heat conducting member is made of a heat conducting material which has a set heat conducting coefficient and is non-magnetic.
For example: the stator winding fixing part of the coreless stator is made of non-magnetic conductive materials.
For example: the middle non-magnetic conductive part 1 is made of a material with better heat conduction performance as much as possible.
Therefore, by adopting the heat conducting material, the heat conducting performance can be improved, and the running reliability and safety of the motor can be improved.
Optionally, the stator winding 2, the hollow stator 3 and the iron core stator 4 are fixedly installed.
For example: in the actual installation and use process, the three parts of stators are fixed well, so that vibration noise is avoided.
Therefore, through fixed installation, noise can be reduced or even avoided, and the use experience of a user is improved.
Through a large number of experiments, the technical scheme of the invention is adopted, the electromagnet effect between the stator and the rotor is more fully utilized by optimizing the structural forms of the stator and the rotor of the linear motor, the normal suction force required by the system is generated between the stator and the rotor of the linear motor on the premise of not reducing the thrust of the linear motor, the reliability of motor driving is improved, the thrust is correspondingly increased on the premise of not increasing current and energy consumption, and therefore, the service efficiency of the motor is increased and the energy consumption is saved.
According to an embodiment of the present invention, there is also provided a magnetic levitation train corresponding to the linear motor device. The magnetic levitation train may include: the linear motor device described above.
In an alternative embodiment, the scheme of the invention ensures that the electromagnet effect between the stator and the rotor is more fully utilized by optimizing the structural forms of the stator and the rotor of the linear motor, and the normal suction force required by the system is generated between the stator and the rotor of the linear motor on the premise of not reducing the thrust of the linear motor, and the system structure is balanced by adjusting the size of the normal suction force through structural adjustment. Correspondingly, on the premise of not increasing current and energy consumption, the thrust is correspondingly increased, so that the service efficiency of the motor is increased, and the energy consumption is saved. For a maglev train, the increased normal suction force can provide a forward force for levitation of the vehicle, thereby reducing the pressure requirement of the levitation system and alleviating the levitation structure; the current demand in the linear motor winding is reduced, so that the purchase cost of the motor and the controller is reduced; the heating of the linear motor winding is reduced, the whole system is optimized, the service efficiency of the system is improved, and the safety and reliability of the vehicle are enhanced.
In an alternative example, the novel linear motor with adjustable normal force provided by the invention can comprise: a composite structure of a coreless linear motor and a linear motor with an iron core.
Alternatively, the effect of adjusting the normal suction force can be achieved by adjusting the duty cycle of the ironed linear motor.
Alternatively, the cored structure may be located on both sides or in the middle or at any location of the motor.
Optionally, the stator winding fixing part without iron core is made of non-magnetic conductive material, and the stator winding fixing part with iron core is made of magnetic conductive material, preferably silicon steel sheet, so that eddy current loss can be reduced.
Therefore, an electromagnet effect is formed between the stator parts with magnetic conduction at the two ends and the rotor, larger thrust and normal suction force can be simultaneously generated, the middle non-magnetic conduction part only generates thrust, and the required normal force can be adjusted by adjusting the thickness of the magnetic conduction parts at the two sides. The design scheme can effectively shorten the lamination thickness of the motor, reduce the effective length of the winding and the copper consumption, and simultaneously reduce the usage amount of the magnetic steel along with the reduction of the lamination thickness, so that the total effective material consumption is greatly reduced.
In an alternative specific example, reference may be made to the examples shown in fig. 1 to 3, for illustrative purposes of implementing the solution of the present invention.
Fig. 1 is a linear motor structure (i.e., linear motor device), which may include: the rotor, the coil windings and the coil fixing frame are made of full magnetic conduction materials, and the conventional stator winding fixing frame is called an iron core linear motor, and when the motor coil fixing frame is made of non-magnetic conduction materials, the motor coil fixing frame is called a coreless linear motor.
According to the invention, through adjusting the motor stator, a composite structure of an iron core and a coreless iron is changed, and fig. 2 and 3 are respectively two composite structures, wherein coil fixing magnetic conductive materials are respectively positioned at two sides or the middle of a coil fixing frame, so that an iron core linear motor structure is formed, and forward driving force and upward normal suction force are provided; the coil fixing non-magnetic conductive material is respectively positioned in the middle or at two sides, only provides forward driving force, and adjusts the normal suction force of the linear motor by adjusting the duty ratio of the magnetic conductive material.
Alternatively, the magnetic conductive material part should be laminated by using silicon steel sheets with the thickness of not more than 0.35mm, and the lamination coefficient should not be less than 0.975, so as to reduce eddy current loss generated during operation.
In the actual installation and use process, the stator is fixed well, so that vibration noise is avoided.
Since the processing and functions implemented by the magnetic levitation train of the present embodiment basically correspond to the embodiments, principles and examples of the linear motor device shown in fig. 1 to 3, the description of the present embodiment is not exhaustive, and reference may be made to the related descriptions in the foregoing embodiments, which are not repeated herein.
Through a large number of experiments, the technical scheme of the invention is adopted, the system structure is balanced by adjusting the normal suction force, and the increased normal suction force can provide forward force for the suspension of the vehicle, so that the suspension structure is lightened; and the current demand in the linear motor winding is reduced, the heating of the linear motor winding is reduced, the use efficiency of the system is improved, and the safety and reliability of the vehicle are enhanced.
In summary, it is readily understood by those skilled in the art that the above-described advantageous ways can be freely combined and superimposed without conflict.
The above description is only an example of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (4)
1. A linear motor device, comprising: the linear motor comprises a linear motor rotor (1), a stator winding (2) and a stator; wherein,
the stator includes: a composite structure formed by a hollow stator (3) and an iron core stator (4); in the composite structure: the iron core stator (4) is divided into two parts, and the two parts of the iron core stator (4) are positioned at two sides of the hollow stator (3); or the hollow stator (3) is divided into two parts, and the two parts of the hollow stator (3) are positioned at two sides of the iron core stator (4);
-said hollow stator (3) for providing a forward driving force;
the iron core stator (4) is used for providing forward driving force and upward normal suction force; the magnetic conductive material of the iron core stator (4) comprises: a magnetic conduction piece formed by laminating silicon steel sheets with set thickness according to a set lamination coefficient is adopted; the set thickness is less than or equal to 0.35mm; the set stacking coefficient is larger than or equal to 0.975; the stator winding (2), the hollow stator (3) and the iron core stator (4) are fixedly arranged;
by optimizing the structural forms of the stator and the rotor of the linear motor, the electromagnet effect between the stator and the rotor is more fully utilized, so that the normal suction force required by the system is generated between the stator and the rotor of the linear motor.
2. The device according to claim 1, characterized in that the magnitude of the normal suction force is adjustable by adjusting the duty cycle of the core stator (4) in the composite structure.
3. The device according to one of claims 1 to 2, characterized in that the hollow stator (3) comprises: the heat conducting member is made of a heat conducting material which has a set heat conducting coefficient and is non-magnetic.
4. A magnetic levitation train, comprising: a linear motor device as claimed in any one of claims 1 to 3.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810905694.1A CN108736592B (en) | 2018-08-10 | 2018-08-10 | Linear motor device and magnetic suspension train |
| PCT/CN2019/099707 WO2020030024A1 (en) | 2018-08-10 | 2019-08-08 | Linear motor device and magnetic suspension train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810905694.1A CN108736592B (en) | 2018-08-10 | 2018-08-10 | Linear motor device and magnetic suspension train |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108736592A CN108736592A (en) | 2018-11-02 |
| CN108736592B true CN108736592B (en) | 2023-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810905694.1A Active CN108736592B (en) | 2018-08-10 | 2018-08-10 | Linear motor device and magnetic suspension train |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108736592B (en) |
| WO (1) | WO2020030024A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108736592B (en) * | 2018-08-10 | 2023-12-26 | 北京九州动脉隧道技术有限公司 | Linear motor device and magnetic suspension train |
| CN111216563B (en) * | 2019-12-24 | 2021-05-07 | 北京磁浮交通发展有限公司 | Medium-low speed maglev train and linear motor mounting structure thereof |
| CN111277109B (en) * | 2020-03-11 | 2021-02-23 | 中车青岛四方机车车辆股份有限公司 | Magnetic-levitation train linear motor and magnetic-levitation train |
| CN111564947A (en) * | 2020-05-19 | 2020-08-21 | 广州市昊志机电股份有限公司 | Coreless arc linear motor and driving device |
| CN112104176A (en) * | 2020-09-23 | 2020-12-18 | 湖南鑫铮科技有限公司 | Coil winder and adjusting device for coreless motor production |
| CN112297866A (en) * | 2020-10-26 | 2021-02-02 | 同济大学 | Magnetic suspension driving device based on linear double-fed motor and magnetic suspension train system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11346446A (en) * | 1998-06-01 | 1999-12-14 | Hitachi Ltd | Stator for rotating electric machine |
| JP2001145280A (en) * | 1999-11-11 | 2001-05-25 | Shin Etsu Chem Co Ltd | Permanent magnet synchronous motor |
| JP2017041979A (en) * | 2015-08-20 | 2017-02-23 | 株式会社豊田中央研究所 | Electric motor |
| WO2017216995A1 (en) * | 2016-06-17 | 2017-12-21 | 三菱電機株式会社 | Permanent magnet synchronous machine and method for manufacturing permanent magnet synchronous machine stator |
| CN208433815U (en) * | 2018-08-10 | 2019-01-25 | 北京九州动脉隧道技术有限公司 | A kind of Linear motor device and magnetic suspension train |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101734170A (en) * | 2008-11-23 | 2010-06-16 | 计齐根 | Magnetostatic levitation and propulsion systems for moving objects |
| JP2010252413A (en) * | 2009-04-10 | 2010-11-04 | Central Japan Railway Co | Magnetic levitation mobile system |
| CN108768131A (en) * | 2018-08-10 | 2018-11-06 | 北京九州动脉隧道技术有限公司 | A kind of structure of the linear motion actuator and magnetic suspension train |
| CN108736592B (en) * | 2018-08-10 | 2023-12-26 | 北京九州动脉隧道技术有限公司 | Linear motor device and magnetic suspension train |
| CN208707510U (en) * | 2018-08-10 | 2019-04-05 | 北京九州动脉隧道技术有限公司 | A kind of structure of the linear motion actuator and magnetic suspension train |
-
2018
- 2018-08-10 CN CN201810905694.1A patent/CN108736592B/en active Active
-
2019
- 2019-08-08 WO PCT/CN2019/099707 patent/WO2020030024A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11346446A (en) * | 1998-06-01 | 1999-12-14 | Hitachi Ltd | Stator for rotating electric machine |
| JP2001145280A (en) * | 1999-11-11 | 2001-05-25 | Shin Etsu Chem Co Ltd | Permanent magnet synchronous motor |
| JP2017041979A (en) * | 2015-08-20 | 2017-02-23 | 株式会社豊田中央研究所 | Electric motor |
| WO2017216995A1 (en) * | 2016-06-17 | 2017-12-21 | 三菱電機株式会社 | Permanent magnet synchronous machine and method for manufacturing permanent magnet synchronous machine stator |
| CN208433815U (en) * | 2018-08-10 | 2019-01-25 | 北京九州动脉隧道技术有限公司 | A kind of Linear motor device and magnetic suspension train |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108736592A (en) | 2018-11-02 |
| WO2020030024A1 (en) | 2020-02-13 |
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