CN105680575A - Large-air gap resonant linear induction motor - Google Patents
Large-air gap resonant linear induction motor Download PDFInfo
- Publication number
- CN105680575A CN105680575A CN201610125929.6A CN201610125929A CN105680575A CN 105680575 A CN105680575 A CN 105680575A CN 201610125929 A CN201610125929 A CN 201610125929A CN 105680575 A CN105680575 A CN 105680575A
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- CN
- China
- Prior art keywords
- air gap
- secondary windings
- primary
- armature winding
- windings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- 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
Abstract
The invention discloses a large-air gap resonant linear induction motor. Maximization of a secondary induced current is achieved by resonant coupling of a primary winding and a secondary winding. According to the system composition of the large-air gap resonant linear induction motor, three-phase symmetrical primary windings (2) wound on a stator core (1) are connected with primary compensation capacitors (3) in series; three-phase symmetrical high-frequency ACs are introduced to generate a traveling wave magnetic field in an air gap; the structures of secondary windings (4) are consistent with those of the primary windings (2); a star or delta connection method is adopted by the secondary windings (4); and the secondary windings (4) are connected with secondary compensation capacitors (5) in series, so that the secondary windings (4) and the primary windings (2) are in a magnetic coupling resonance state; the resonant frequencies of the secondary windings (4) are the same as those of the primary windings (2); and the primary windings (2) and the secondary windings (4) achieve magnetic coupling resonance. The large-air gap resonant linear induction motor is applied to the aspects of a linear motor and the like. Due to a high current generated by resonant coupling, the motor has the advantages of high thrust, large air gap, high efficiency and the like.
Description
Technical field
The present invention proposes a kind of big air gap resonant mode line inductance electromotor, is mainly used at a high speed or ultrahigh speed linear accelerating field.
Background technology
Line inductance electromotor can be regarded as and be launched tiling differentiation by the primary and secondary of rotary inductive motor. Primary three-phase windings passes into three-phase symmetrical sinusoidal current, travelling-magnetic-field is produced at air gap place, secondary conductor cutting travelling-magnetic-field, induce electromotive force and produce electric current, electric current interacts with air-gap field and produces electromagnetic push, secondary conductor direction along travelling-magnetic-field under thrust is for linear motion, and line inductance electromotor has simple in construction, advantage easy to control. But, the electromagnetism air gap (2～10mm) of line inductance electromotor is about tradition ten times of electric rotating machine so that line inductance electromotor inefficient, and application is restricted.
Magnet coupled resonant type transmitting non-contact electric energy is the one of numerous non-contact type electric energy transmission technology, for realizing higher transmission efficiency, transmitting terminal and receiving terminal at contactless energy-transfer device are respectively connected to compensate electric capacity, it is made to be operated in resonant condition, so that there is strong magnetic coupling resonance with receiving coil in transmitting coil, realizing that energy is remote, high efficiency is transferred to receiving coil from transmitting coil, its exclusive advantage makes contactless energy transmission technology have huge application potential.
In sum, can technology be applied on line inductance electromotor if able to magnet coupled resonant type noncontact is passed, the armature winding and secondary windings of linear electric motors all access compensation electric capacity, design the resonant mode line inductance electromotor of a kind of high efficiency, big air gap, then significantly widen the range of application of linear electric motors undoubtedly, also will start the applicable frontier of contactless biography simultaneously.
Summary of the invention
It is desirable to provide a kind of big air gap resonant mode line inductance electromotor, its basic thought is to utilize the contactless biography of magnetic coupling resonance can produce big electric current in the linear electric motors secondary conductor under bigger air gap, secondary conductor and travelling-magnetic-field is made to have higher electromagnetic force, thus improving the work efficiency of linear electric motors.
This invention address that the scheme that its technical problem adopts is as follows:
A kind of big air gap resonant mode line inductance electromotor, utilizes the strong resonance of armature winding and secondary windings to couple, produces big electric current so that linear electric motors have more high thrust and air gap in secondary coil.The three-phase symmetrical armature winding 2 being wound on stator core 1 is connected with the primary electric capacity 3 that compensates, and passes into three-phase symmetrical high-frequency alternating current, and secondary windings 4 structure is consistent with armature winding 2, adopts star or delta connection, connects with secondary compensation electric capacity 5.
So, magnetic coupling resonance principle being applied to line inductance electromotor, it is particularly configured to:
Primary stationary part: primary three-phase symmetric winding is around on primary iron core 1, primary iron core 1 adopts the material of high magnetic permeability, low conductivity, every phase winding all compensates electric capacity 3 with primary and connects, armature winding 2 electric current is provided by three-phase high-frequency ac power or power frequency inverter, and armature winding 2 material is litz wire.
Secondary subpart: subpart is mainly made up of coiler part and secondary iron core 6, the structure of secondary windings 4, material are consistent with armature winding 2, adopt star or delta connection, it is connected with secondary compensation electric capacity 5, the resonant frequency of resonant frequency and armature winding 2 part is equal, thus realizing armature winding 2 and the coupled resonance of secondary windings 4, obtain maximum secondary induction electric current.
Compared with prior art, the invention has the beneficial effects as follows:
1, magnetic coupling resonance principle is applied to line inductance electromotor, considerably increases the working gas gap of linear electric motors, expand its range of application;
2, secondary conductor faradic current is bigger so that the thrust of line inductance electromotor is bigger, in hgher efficiency;
3, magnet coupled resonant type line inductance electromotor is the linear electric motors of a kind of brand-new mode of operation, and its proposition has pushed directly on the development of techniques of linear motor level.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of resonant mode line inductance electromotor.
Fig. 2 is resonant mode line inductance electromotor primary coil structure figure.
Fig. 3 is resonant mode line inductance electromotor equivalent circuit diagram.
Detailed description of the invention
Described below is in conjunction with accompanying drawing detailed description of the invention, and should not be construed limitation of the invention, and following embodiment is for the short secondary resonance formula line inductance electromotor of monolateral platypelloid type.
Being illustrated by accompanying drawing .1, the specific embodiment of the present invention is:
Primary three-phase symmetric winding is around on primary iron core 1, every phase winding all compensates electric capacity 3 with primary and connects, it is made to be operated in resonant condition, armature winding 2 electric current is provided by three-phase high-frequency ac power or power frequency inverter, armature winding 2 is by litz wire coiling, it is possible to reduce the kelvin effect under high-frequency ac state. The structure of secondary windings 4, material are consistent with armature winding 2, adopt star or delta connection, and connect with secondary compensation electric capacity 5, its resonant frequency is identical with the resonant frequency of armature winding 2, now armature winding 2 and secondary windings 4 realize strong magnetic coupling resonance under bigger air gap, the secondary windings 4 of linear electric motors induces big electric current, interacts with travelling-magnetic-field, produces bigger electromagnetic push.
Accompanying drawing 2 gives big air gap resonant mode line inductance electromotor primary coil structure figure. Primary iron core 1 adopts the material of high magnetic permeability, low conductivity, three-phase symmetrical armature winding 2 is around on primary iron core 1, and connect with primary compensation electric capacity 3, after passing into three-phase symmetrical high-frequency alternating current, produce travelling-magnetic-field at air gap place, armature winding 2 works in resonant condition, resonates with secondary windings 4, realize energy transmission to maximize, and then obtain maximum secondary faradic current.
Accompanying drawing 3 gives the equivalent circuit diagram of resonant mode line inductance electromotor.Armature winding 2 is connected with the primary electric capacity 3 that compensates, pass into three-phase symmetrical high-frequency alternating current, secondary windings 4 is connected with secondary compensation electric capacity 5, armature winding 2 and secondary windings 4 all adopt star connection, it is operated in resonant condition and resonant frequency is identical, coupled by coefficient of coup K between them, thus inducing big electric current on secondary windings 4.
Claims (6)
1. a big air gap resonant mode line inductance electromotor, the strong resonance utilizing armature winding and secondary windings couples, secondary coil produces big electric current, linear electric motors are made to have more high thrust and air gap, it is characterized in that: the three-phase symmetrical armature winding (2) being wound on stator core (1) is connected with the primary electric capacity (3) that compensates, pass into three-phase symmetrical high-frequency alternating current, secondary windings (4) structure is consistent with armature winding (2), adopt star or delta connection, connect with secondary compensation electric capacity (5).
2. big air gap resonant mode line inductance electromotor according to claim 1, it is characterised in that each phase of armature winding (2) and secondary windings (4) is all in series with compensation electric capacity.
3. big air gap resonant mode line inductance electromotor according to claim 1 and 2, it is characterised in that armature winding (2) is identical with the resonant frequency of secondary windings (4).
4. big air gap resonant mode line inductance electromotor according to claim 1, it is characterised in that winding coil all adopts the litz wire that kelvin effect is little.
5. big air gap resonant mode line inductance electromotor according to claim 1, it is characterized in that, it is possible to change armature winding (2) and the resonant frequency of secondary windings (4) by regulating the primary capacitance compensating electric capacity (3) and secondary compensation electric capacity (5).
6. big air gap resonant mode line inductance electromotor according to claim 1, it is characterised in that adopting magnetic coupling resonance to pass energy technology, motor has bigger working gas gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610125929.6A CN105680575A (en) | 2016-03-04 | 2016-03-04 | Large-air gap resonant linear induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610125929.6A CN105680575A (en) | 2016-03-04 | 2016-03-04 | Large-air gap resonant linear induction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105680575A true CN105680575A (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610125929.6A Pending CN105680575A (en) | 2016-03-04 | 2016-03-04 | Large-air gap resonant linear induction motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110647230A (en) * | 2019-09-12 | 2020-01-03 | 苏州浪潮智能科技有限公司 | Power supply system of server |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1661891A (en) * | 2004-02-23 | 2005-08-31 | 三星电机株式会社 | Linear vibration motor using resonance frequency |
| CN101621244A (en) * | 2009-08-14 | 2010-01-06 | 华中科技大学 | Moving-magnetic type linear motor |
| CN103560632A (en) * | 2013-11-04 | 2014-02-05 | 东南大学 | Brushless excitation mechanism based on wireless transmission of electric energy |
| CN203967949U (en) * | 2014-06-10 | 2014-11-26 | 黑龙江恒益电气股份有限公司 | Electricity direct-drive type forcing press linear electric motors |
| CN205544628U (en) * | 2016-03-04 | 2016-08-31 | 西南交通大学 | Big air gap resonant mode linear induction motor |
-
2016
- 2016-03-04 CN CN201610125929.6A patent/CN105680575A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1661891A (en) * | 2004-02-23 | 2005-08-31 | 三星电机株式会社 | Linear vibration motor using resonance frequency |
| CN101621244A (en) * | 2009-08-14 | 2010-01-06 | 华中科技大学 | Moving-magnetic type linear motor |
| CN103560632A (en) * | 2013-11-04 | 2014-02-05 | 东南大学 | Brushless excitation mechanism based on wireless transmission of electric energy |
| CN203967949U (en) * | 2014-06-10 | 2014-11-26 | 黑龙江恒益电气股份有限公司 | Electricity direct-drive type forcing press linear electric motors |
| CN205544628U (en) * | 2016-03-04 | 2016-08-31 | 西南交通大学 | Big air gap resonant mode linear induction motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110647230A (en) * | 2019-09-12 | 2020-01-03 | 苏州浪潮智能科技有限公司 | Power supply system of server |
| CN110647230B (en) * | 2019-09-12 | 2021-07-02 | 苏州浪潮智能科技有限公司 | Power supply system of server |
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Application publication date: 20160615 |