CN106981963B - Arc electric motor based on electromagnetic induction driving - Google Patents
Arc electric motor based on electromagnetic induction driving Download PDFInfo
- Publication number
- CN106981963B CN106981963B CN201710345811.9A CN201710345811A CN106981963B CN 106981963 B CN106981963 B CN 106981963B CN 201710345811 A CN201710345811 A CN 201710345811A CN 106981963 B CN106981963 B CN 106981963B
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- rotor
- stator
- arc
- electromagnet
- gap
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/02—Synchronous motors
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Induction Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention provides a kind of arc electric motors based on electromagnetic induction driving, in the curved path motor driven with special requirement.Arc electric motor of the invention is induction, including stator, rotor and electromagnet；Rotor is the column structure of two layers of material, and outer layer material is copper, and internal layer material is iron；Electromagnet is arranged in the surface of rotor, interacts with rotor inner layer and realizes magnetic suspension.When the coil windings of stator pass through electric current, shifting magnetic field is generated in air-gap, because changes of magnetic field induces vortex, vortex interacts rotor surface with the air-gap field generated, the torque of driving rotor rotation is generated under the action of Lorentz force, driving arc line shaped rotor is moved along arc-shaped guide rail.Arc electric motor of the invention, structure is simple, and manufacture is easy for installation, is easier to realize magnetic suspension, cost is lower than permanent-magnetic electric machine, and high temperature resistant.
Description
Technical field
The present invention relates to the curved path motor driven fields with special requirement, and in particular to one kind is based on electromagnetic induction
Two-level rotor arc electric motor.
Background technique
Core component of the motor as drive system, plays important during electric signal is converted into mechanical signal
Effect.Relatively common has asynchronous induction rotating electric machine, permanent-magnetic synchronous rotation motor and permanent-magnet linear motor etc., work
Two kinds nothing more than of principle, a kind of for the inductance type based on Faraday's electromagnetic induction law, one kind is based on magnetic interaction with intereletrode
Magneto.Permanent magnet synchronous motor, magnetomotive force are generated by permanent magnet.Magnetomotive force, voltage and current waveform be sinusoidal waveform.
High performance kinetic control system needs servo operation, and permanent magnet synchronous motor has rapid response, high power density and effect
The high advantage of rate.But in some cases, permanent-magnetic electric machine has the shortcomings that some more obvious.China's rare earth resources are in short supply,
Material to manufacture rotor permanent magnet is insufficient, causes expensive；Not only price is more expensive for magneto, and permanent magnet performance is to temperature
Degree variation is also more sensitive, and in the case where not damaging magnet, the stator peak point current of induction machine can be rotor current
Several times；In addition, magneto can not accomplish that power is very big, and induction machine can be biggish by increasing exciting current acquisition
Output power.
Under case today, rotating electric machine gradually can not meet the demand of Mechatronic Systems, therefore just occur some with spy
The motor of distinguished service energy, such as linear motor, ball motor etc..In some systems, it is also necessary to which rotor makees movement in a curve, therefore needs
A kind of arc electric motor met the requirements is wanted, but almost without the arc electric motor based on electromagnetic induction.
Summary of the invention
The present invention gains enlightenment from traditional rotating electric machine and linear motor, has invented a kind of based on induction pair
The arc electric motor of layer rotor, and magnetic suspension is achieved upwardly through electromagnet in corresponding Vertical Square, largely eliminate
Friction and rotor abrasion.
The present invention provides a kind of arc electric motors based on electromagnetic induction driving, to be induction, including stator, rotor
And electromagnet；Wherein rotor is the column structure of two layers of material, and outer layer material is copper, and internal layer material is iron；Electromagnet is arranged in
The surface of rotor.
The coil windings of the stator generate a shifting magnetic field, rotor surface when passing through electric current in air-gap
Generate the vortex induced by changes of magnetic field；The internal layer and stator of the rotor and generated air-gap field form closed magnetic
Field circuit；The vortex interacts with the air-gap field generated, and a driving rotor is generated under the action of Lorentz force
The torque of rotation, driving arc line shaped rotor are moved along arc-shaped guide rail.The rotor inner layer also interacts with electromagnet real
Existing magnetic suspension.
Advantages of the present invention with have the active effect that
1) arc electric motor of the invention uses induction, by increasing exciting current, can obtain biggish output
Power, response is very fast, and rotor can be rotated with continuously smooth, and cost is lower than permanent-magnetic electric machine, and high temperature resistant.
2) motor rotor construction of the invention is the cylindrical rotor structure of the double-deck different materials.Outer layer is copper, to generate
Vortex, to generate driving moment under the action of sliding magnetic field；Internal layer is iron, and magnetic permeability is higher, with stator and air-gap field
Generate magnetic loop.The configuration of the present invention is simple, manufacture is easy for installation, and is easier to realize magnetic suspension.
3) motor of the invention is easier to realize in the vertical direction of rotor using attraction of the electromagnet to iron layer rotor
Magnetic suspension.Instead of bearing, reduce friction and material loss, higher velocity of rotation can be obtained, while by changing electricity
The size of current of magnet changes the relative position of vertical direction upper rotor part.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of arc electric motor of the invention；
Fig. 2 is the side structure schematic diagram of arc electric motor of the invention；
Fig. 3 is the energization phase sequence exemplary diagram of a stator winding provided by the invention；
Fig. 4 is two-level rotor structural schematic diagram of the invention.
Specific embodiment
Below in conjunction with drawings and examples, the present invention is described in further detail.
The rotor of the induction motor of tradition is rotatable conductor, is usually in mouse cage shape more.And it is provided by the invention
The rotor of arc electric motor based on electromagnetic induction driving does not use the mouse cage conducting bar structure of traditional induction machine, but two layers
Column structure.
Arc electric motor of the invention is induction, as shown in Figure 1, including stator, rotor and several electromagnet.Its
In, stator winding 1 is mounted on the stator slot 3 on stator core 2.The outside face of rotor is that arc line shaped can be transported along arc-shaped guide rail
It is dynamic.Rotor is the column structure of two layers of material, and outer layer material is copper, referred to as layers of copper rotor 4, and internal layer material is iron, referred to as iron layer
Rotor 5.Several electromagnet 6 are arranged in the surface of rotor.
Internal layer rotor is the higher iron of magnetic permeability, and an effect is returned for forming closed magnetic field with stator and air-gap field
Road, another effect are to interact to realize magnetic suspension with electromagnet.Two-layer rotor structure is together with each other, it may be considered that
Copper facing is realized on iron prop surface.
Stator core is embedded in the coil windings with certain phase sequence, by corresponding electric current, will produce in air-gap
A raw shifting magnetic field, rotor surface generate the vortex induced by changes of magnetic field.After stator coil winding is powered, rotor and fixed
It is stator → air-gap → layers of copper rotor → irony rotor → irony rotor that son and air-gap field, which are formed by closed magnetic field circuit,
→ layers of copper rotor → air-gap → stator.Vortex interacts with generated air-gap field, produces under the action of Lorentz force
The torque of raw driving rotor rotation, driving arc line shaped rotor are moved along arc-shaped guide rail.
Motor of the invention is easier to realize magnetic using attraction of the electromagnet to iron layer rotor in the vertical direction of rotor
It suspends.Because internal layer rotor is ferrous material, it is magnetic material, so arranging several electromagnet right above rotor, can inhales
Draw the irony rotor of internal layer, to offset the self weight of rotor.Current vortex sensor real-time monitoring electromagnet can be used and irony turns
The size of air-gap between son maintains irony rotor to change the size of attraction by the electric current for changing electromagnet
A constant position.By way of changing relative position of the size of current of electromagnet to change vertical direction upper rotor part
Instead of bearing, reduce friction and material loss, rotor can also obtain higher velocity of rotation.
As shown in figure 3, being the energization phase sequence of stator winding, by taking 6 slots as an example, winding split-phase is as follows, split-phase rule
Similar to common rotary induction machine, the three-phase A, B, C of power supply successively differ 120 ° of phases.In figure, it is with B phase winding
Example, B+ and B- are same phase currents, can be same circle winding, phase is identical, but electric current positive direction is different.Of the invention
Arc electric motor can be obtained biggish output power, be increased driving torque, realize rotor by the exciting current of increase stator
Continuously smooth rotation, cost is lower than permanent-magnetic electric machine, and high temperature resistant.
As shown in figure 4, the copper rotor of outer layer is used to generate vortex, internal layer irony rotor for double-deck motor rotor construction
For constituting field circuit.Due to the effect of kelvin effect, outer layer rotor is unfit to do too thick, wherein can be according to the following formula
Vortex penetration depth is calculated, to estimate the thickness δ of layers of copper rotor.
Wherein, ω is the angular frequency of stator coil electric current, and σ is the conductivity of copper rotor, μ0For space permeability, μrFor
The relative permeability of copper rotor.
Claims (3)
1. a kind of arc electric motor based on electromagnetic induction driving, to be induction, which is characterized in that including stator, rotor and
Electromagnet；Wherein rotor is the column structure of two layers of material, and outer layer material is copper, and internal layer material is iron；Electromagnet, which is arranged in, to be turned
The surface of son；
When the coil windings of the stator pass through electric current, a shifting magnetic field is generated in air-gap, rotor surface is generated because of magnetic
The vortex that field variation sensing goes out；The energization phase sequence of stator winding is that the three-phase A, B, C of power supply successively differ 120 ° of phases；It is described
Rotor internal layer and stator and generated air-gap field form closed magnetic field circuit, closed magnetic field circuit is stator → air
Gap → layers of copper rotor → irony rotor → irony rotor → layers of copper rotor → air-gap → stator；The vortex and the gas generated
Gap magnetic field interaction generates the torque of a driving rotor rotation under the action of Lorentz force, drives arc line shaped rotor edge
Arc-shaped guide rail movement；The rotor inner layer also interacts with electromagnet and realizes magnetic suspension；
The rotor copper facing realization, thickness δ of outer layer copper material on iron prop surface are as follows:
Wherein, ω is the angular frequency of stator coil electric current, and σ is the conductivity of rotor outer layer copper material, μ0For space permeability, μr
For the relative permeability of rotor outer layer copper material.
2. arc electric motor according to claim 1, which is characterized in that the electromagnet, by the electricity for changing electromagnet
Size is flowed to change the relative position of vertical direction upper rotor part.
3. arc electric motor according to claim 1 or 2, which is characterized in that the excitation that the rotor passes through increase stator
Electric current increases driving torque, realizes continuously smooth rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710345811.9A CN106981963B (en) | 2017-05-17 | 2017-05-17 | Arc electric motor based on electromagnetic induction driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710345811.9A CN106981963B (en) | 2017-05-17 | 2017-05-17 | Arc electric motor based on electromagnetic induction driving |
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| Publication Number | Publication Date |
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| CN106981963A CN106981963A (en) | 2017-07-25 |
| CN106981963B true CN106981963B (en) | 2019-07-05 |
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| CN201710345811.9A Active CN106981963B (en) | 2017-05-17 | 2017-05-17 | Arc electric motor based on electromagnetic induction driving |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108429420B (en) * | 2018-02-26 | 2020-02-18 | 东南大学 | Asymmetric double-three-phase arc permanent magnet synchronous motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201821303U (en) * | 2010-07-05 | 2011-05-04 | 黄爱国 | Magnetic levitation freeze generator |
| CN205940433U (en) * | 2016-07-08 | 2017-02-08 | 佛山格尼斯磁悬浮技术有限公司 | Sensing device and magnetic suspension bearing |
-
2017
- 2017-05-17 CN CN201710345811.9A patent/CN106981963B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201821303U (en) * | 2010-07-05 | 2011-05-04 | 黄爱国 | Magnetic levitation freeze generator |
| CN205940433U (en) * | 2016-07-08 | 2017-02-08 | 佛山格尼斯磁悬浮技术有限公司 | Sensing device and magnetic suspension bearing |
Non-Patent Citations (2)
| Title |
|---|
| 空心转子弧形直线感应电动机的优化与特性分析;司纪凯等;《微特电机》;20140531;第42卷(第5期);第48-52页 |
| 转子材料和气隙对实心转子直线弧形感应电机性能影响;司纪凯等;《电机与控制学报》;20121031;第16卷(第10期);第31-37页 |
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| CN106981963A (en) | 2017-07-25 |
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