CN110112884A - A kind of three-pole AC magnetic-suspension linear motor of constant-current source excitation - Google Patents
A kind of three-pole AC magnetic-suspension linear motor of constant-current source excitation Download PDFInfo
- Publication number
- CN110112884A CN110112884A CN201910366220.9A CN201910366220A CN110112884A CN 110112884 A CN110112884 A CN 110112884A CN 201910366220 A CN201910366220 A CN 201910366220A CN 110112884 A CN110112884 A CN 110112884A
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- Prior art keywords
- mover
- stator
- suspension
- constant
- current source
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Linear Motors (AREA)
Abstract
The invention discloses a kind of three-pole AC magnetic-suspension linear motors of constant-current source excitation, including stator (1), mover (2), it is characterized by: the stator (1) includes the identical stator core (6) of three structures, the connector (11) made of three permeability magnetic materials is fixed between stator core (6), the present invention not only efficiently solves conventional motors and increases mapping device, not the problem of not being able to satisfy performance requirement, and it efficiently solves traditional line motor stator there are friction problems with mover oneself, and without permanent magnet, thermal stability is good, low cost.
Description
Technical field
The present invention relates to technical field of motor manufacture, and in particular to a kind of friction, abrasion, control is simple, reliable for operation, band
Load capacity is strong, fast response time, compact-sized, low in energy consumption, can generate the three of the constant-current source excitation of stable radial suspension force
Pole exchanges magnetic-suspension linear motor.
Background technique
With the high speed development of automatic control technology and microcomputer, the positioning accuracy of line motion control system is mentioned
Requirements at the higher level are gone out, traditional rotating electric machine adds the actuating device of the linear motion of a set of mapping device composition, causes to be driven
Systems bulky, there are frictional noises and transmission loss, and transmission efficiency is low, and transmission mechanism is easy to damage, these disadvantages cause to pass
Dynamic linear motor has been difficult to meet the performance requirement of modern straight line control system.
And magnetic-suspension linear motor is that the contactless bearing of mover suspension is realized using magnetic levitation technology, between mover and stator
It remains certain air gap, eliminates the frictional resistance between stator and mover, greatly improve sensitivity, the rapidity of system
And trackability.And magnetic-suspension linear motor non contact transmission power is realized, mechanical friction loss is almost nil, and institute is faulty few,
It is non-maintaining, it is safe and reliable, the service life is long.
It is generated in magnetic-suspension linear motor frequently with permanent magnet and biases magnetic flux, suspending windings generation suspension control magnetic flux, two
Person, which interacts, generates suspending power.The problem but permanent magnet under high temperature and vibration environment demagnetizes, leads to its industrial application
It is restricted.Therefore, invent a kind of magnetic-suspension linear motor using constant-current source excitation to extend its application field have it is important
Meaning.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of three-pole AC magnetic-suspension linear motors of constant-current source excitation, originally
The problem of invention not only efficiently solves conventional motors increase mapping device, is not able to satisfy control system performance requirement, Er Qieyou
Effect solves traditional line motor stator, and there are friction problems with mover oneself, and system, without permanent magnet, thermal stability is good, cost
It is low.
The invention is realized by the following technical scheme:
A kind of three-pole AC magnetic-suspension linear motor of constant-current source excitation, including stator (1), mover (2), it is characterised in that: institute
Stating stator (1) includes the identical stator core (6) of three structures, is made up between stator core (6) of three non-magnet materials
Connector (11) it is fixed, the stator core (6) includes the axial control iron core of suspension iron core (9), 3 identical radian measures
(10), suspension iron core (9) inner wall every magnetic aluminium ring (8) and 3 axial control iron core (10) outer walls by being fixed as one, suspension iron core
(9) inner wall is circumferentially angularly equipped with 3 inwardly projecting stator suspension teeth (13), thereon radially successively coiling constant-current source
Winding (14), suspending windings (15) use three-phase symmetric winding Y type connection type, each axial control between suspending windings (15)
Iron core (10) inner wall processed is circumferentially angularly equipped with 3 inwardly projecting stator tooths (12), corresponds to coiling thereon and axially controls
Winding (16)；
The mover (2) includes mover axis (3), and M axially aligned mover cores (4) are socketed on mover axis (3), and M is a
Mover core (4) circumference is to being radially angularly provided with 3 mover suspension teeth (5) through mover axis (3), each mover
The circumferential surface remaining space of iron core (4) is evenly arranged with 9 mover teeth (7).
The further Technological improvement plan of the present invention is:
The constant-current source winding (14) of coiling is in parallel or is series connection on the stator suspension tooth (13) of three stator cores (6),
It is powered by DC constant current power supply；On the stator suspension tooth (13) of three stator cores (6) between the three-phase symmetric winding of coiling
For parallel connection, powered by a three-phase inverter.
The further Technological improvement plan of the present invention is:
The stator tooth (12) is correspondingly arranged with mover tooth (7), stator suspension tooth (13) and mover suspension tooth (5), connector
(11) it is set between corresponding suspension iron core (9) side wall of adjacent stators suspension tooth (13).
The further Technological improvement plan of the present invention is:
Circumferentially angle is 120 degree to the adjacent stators suspension tooth (13), between be angularly provided with 3 stator tooths
(12).
The further Technological improvement plan of the present invention is:
Circumferentially angle is 120 degree to the adjacent mover suspension tooth (5), between be angularly provided with 3 mover teeth (5)
The further Technological improvement plan of the present invention is:
The width and thickness of the stator tooth (12) and mover tooth (5) is to be set as A, the spacing between adjacent stator core (6)
It also is A, the spacing between adjacent mover core (4) is that 2A, M and A are axially moved distance according to axial movement total distance and every time
Any setting, M are the natural number greater than 3.
The further Technological improvement plan of the present invention is:
The stator (1) and mover (2) are the hollow cylindrical structure of coaxial line, and mover (2) is located at the inside of stator (1).
The further Technological improvement plan of the present invention is:
The stator (1), mover (2) are made of permeability magnetic material
Compared with prior art, the present invention having following obvious advantage:
One, the present invention is respectively arranged with constant-current source winding and suspending windings on stator suspension tooth, and the two is powered to interacting and produce
Raw radial suspension force；The contactless suspension support of mover is realized, sensitivity, rapidity and the trackability of system, machine are greatly improved
Tool frictional dissipation is almost nil, and failure is few, non-maintaining, safe and reliable, the service life is long.
Two, the present invention is linked as 3 whole strip mover suspension teeth in upper be equipped with of mover core, can do in mover
Reliable and stable radial suspension force is generated while linear motion.
Three, of the invention to separate suspension iron core and axial control iron core using every magnetic aluminium block, linear motion controls and suspends
Without coupling, independent control between control, control is simple, reliable.
Four, suspending windings of the present invention just can control radial two-freedom stable suspersion by a three-phase inverter power supply, be
It unites small in size, low cost.
Detailed description of the invention
Fig. 1 is side view of the present invention；
Fig. 2 is front view of the present invention；
Fig. 3 is constant-current source excitation field distribution map of the present invention；
Suspending windings Distribution of Magnetic Field figure when Fig. 4 is X-direction suspending power of the present invention.
Specific embodiment
The present invention is based on principle be:
Suspension theory: the stator of constant-current source winding 14 and right side stator core 6 on the stator suspension tooth 13 of left side stator core 6
Constant-current source winding 14 on suspension tooth 13 in the same direction in parallel or series, and with the perseverance on the stator suspension tooth 13 of intermediate stator iron core 6
It is powered after 14 reverse parallel connection of stream source winding or series connection by a constant-current source, the excitation field of formation such as Fig. 3.Left side and right side stator
It is anti-with the three-phase symmetrical suspending windings 15 on intermediate stator iron core 6 after the parallel connection in the same direction of three-phase symmetrical suspending windings 15 on iron core 6
By an inverter power supply after to parallel connection, the X for the mover 2 that inverter is detected according to the displacement sensor of setting on the stator 1,
Y-direction offset adjusts the electric current in three-phase symmetrical suspending windings 15, a unipolar flux is generated, with magnetic flux phase interaction
With, lead to air-gap field decrease identical with 2 offset direction of mover, and opposite direction air-gap field enhances, and generates and is directed toward and moves
Mover 2 is retracted equilbrium position by the opposite suspending power in sub- offset direction.Shown in Fig. 4 is three when generating X-direction suspending power
A iron core suspension magnetic flux distribution situation.
Move along a straight line principle: at initial position, m-th mover core 4 is just being aligned with left side stator core 6, then in
Between the right side of stator core 6 be aligned on the left of the M+1 stator core 6, at this point, the axial control winding in left side stator core 6
16 power-off, and the axial control winding 16 in intermediate stator core 6 is powered, mover 2 will be moved to the left A, continue centre
Axial control winding 16 in stator core 6 powers off, and the axial control winding 16 in the stator core on right side 6 is powered, and moves
Son 2 will continue to move downward A, repeat the above process, mover 2 will be moved downward continuously；If you need to move right, then convert
The power-up sequence of axial control winding 16 can be realized.If you need to be accurately positioned, only need to design tooth pitch, if mover 2 compared with
It is long, it can be used cooperatively together by multiple stator cores 6, be used to support 2 stable suspersion of mover.
Below by specific embodiment combination attached drawing 1-4, invention is further described in detail.
The present invention includes stator 1 and mover 2, and mover 2 includes mover axis 3, and M axially aligned mover cores 4 are socketed
It on the circumferential surface of mover axis 3, is respectively arranged with and is linked together on M 120 direction mover core X, X+120, X, and extend whole
3 mover suspension teeth 5 of a mover axial length are evenly equipped with 9 mover teeth 7 on each remaining circumferential surface of mover core 4；The stator 1
Including three stator cores 6, the stator core 6 is the hollow cylindrical structure with 2 coaxial line of mover, and mover 2 is located at stator
The inner ring of iron core 6.Suspension iron core 9 is connected by the stator core 6 by 3 every magnetic aluminium block 8 with axial control iron core 10
Whole, axial control in iron core 10 is provided with stator tooth 12 corresponding with mover tooth 7, thereon coiling axial direction control winding 16,
Stator suspension tooth 13 is provided on suspension iron core 9, thereon coiling three-phase symmetrical suspending windings 15 and constant-current source winding 14.Stator tooth
12 width and thickness and the width and thickness of mover tooth 7 are A, and the spacing between adjacent stator core 6 is A, adjacent dynamic
Spacing between sub- iron core 4 is 2A.
In the present embodiment, the M is natural number and M > 3, the quantity of mover core 4 far more than stator core 6 quantity,
The quantity of mover core 6, which depends on motor axial length, can use more than two stators 1 one when mover core 4 is very long
It rises and uses.Stator tooth 12 and mover tooth 7 correspond, and magnetic circuit is unsaturated.
Suspension magnetic circuit and linear motion magnetic circuit are mutually isolated, suspension control magnetic flux and magnetic flux merely through X,
The stator suspension tooth and mover suspension tooth in 120 direction X+120, X form closed circuit, on axial linear movement without influence, control
System is simple.
M mover core 4 is provided on 120 direction X, X+120, X and is linked together, and extends entire mover axial length
Mover suspension tooth 13, guarantee to generate reliable and stable radial suspension force while mover 2 moves in a straight line.
Stator 1, mover 2 are made of permeability magnetic material.
The constant-current source winding 14 of coiling can be after serial or parallel connection, by one on stator suspension tooth 13 in three stator cores 6
A constant current source power supply, the three-phase symmetrical suspending windings 15 in same stator core 6 are star-like, the three-phase in three stator cores 6
Symmetrical suspending windings 15 are parallel connection, are powered by a three-phase inverter.
The technical means disclosed in the embodiments of the present invention is not limited only to technological means disclosed in above embodiment, further includes
Technical solution consisting of any combination of the above technical features.It should be pointed out that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (8)
1. a kind of three-pole AC magnetic-suspension linear motor of constant-current source excitation, including stator (1), mover (2), it is characterised in that:
The stator (1) includes the identical stator core (6) of three structures, is made up between stator core (6) of three permeability magnetic materials
Connector (11) it is fixed, the stator core (6) includes the axial control iron core of suspension iron core (9), 3 identical radian measures
(10), suspension iron core (9) inner wall every magnetic aluminium ring (8) and 3 axial control iron core (10) outer walls by being fixed as one, suspension iron core
(9) inner wall is circumferentially angularly equipped with 3 inwardly projecting stator suspension teeth (13), thereon radially successively coiling constant-current source
Winding (14), suspending windings (15) use three-phase symmetric winding Y type connection type, each axial control between suspending windings (15)
Iron core (10) inner wall processed is circumferentially angularly equipped with 3 inwardly projecting stator tooths (12), corresponds to coiling thereon and axially controls
Winding (16)；
The mover (2) includes mover axis (3), and M axially aligned mover cores (4) are socketed on mover axis (3), and M is a
Mover core (4) circumference is to being radially angularly provided with 3 mover suspension teeth (5) through mover axis (3), each mover
The circumferential surface remaining space of iron core (4) is evenly arranged with 9 mover teeth (7).
2. a kind of three-pole AC magnetic-suspension linear motor of constant-current source excitation according to claim 1, it is characterised in that: institute
It states the constant-current source winding (14) of coiling on the stator suspension tooth (13) of three stator cores (6) to be in parallel or be series connection, by direct current
Constant current source power supply；It is series connection between the three-phase symmetric winding of coiling on the stator suspension tooth (13) of three stator cores (6)
Or be parallel connection, it is powered by a three-phase inverter.
3. a kind of three-pole AC magnetic-suspension linear motor of constant-current source excitation according to claim 1 or 2, feature exist
In: the stator tooth (12) is correspondingly arranged with mover tooth (7), stator suspension tooth (13) and mover suspension tooth (5).
4. a kind of three-pole AC magnetic-suspension linear motor of constant-current source excitation according to claim 1 or 2, feature exist
In: circumferentially angle is 120 degree to the adjacent stators suspension tooth (13), between be angularly provided with 3 stator tooths (12).
5. a kind of three-pole AC magnetic-suspension linear motor of constant-current source excitation according to claim 1 or 2, feature exist
In: circumferentially angle is 120 degree to the adjacent mover suspension tooth (5), between be angularly provided with 3 mover teeth (5).
6. a kind of three-pole AC magnetic-suspension linear motor of constant-current source excitation according to claim 1 or 2, feature exist
In: the width and thickness of the stator tooth (12) and mover tooth (5) is to be set as A, the spacing between adjacent stator core (6)
For A, the spacing between adjacent mover core (4), which is 2A, M and A, appoints according to being axially moved total distance and be axially moved distance every time
Meaning setting, M are the natural number greater than 3.
7. a kind of three-pole AC magnetic-suspension linear motor of constant-current source excitation according to claim 1 or 2, feature exist
In: the stator (1), with mover (2) be coaxial line hollow cylindrical structure, mover (2) is located at the inside of stator (1).
8. a kind of three-pole AC magnetic-suspension linear motor of constant-current source excitation according to claim 1 or 2, feature exist
In: the stator (1), mover (2) are made of permeability magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910366220.9A CN110112884A (en) | 2019-05-05 | 2019-05-05 | A kind of three-pole AC magnetic-suspension linear motor of constant-current source excitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910366220.9A CN110112884A (en) | 2019-05-05 | 2019-05-05 | A kind of three-pole AC magnetic-suspension linear motor of constant-current source excitation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110112884A true CN110112884A (en) | 2019-08-09 |
Family
ID=67488174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910366220.9A Withdrawn CN110112884A (en) | 2019-05-05 | 2019-05-05 | A kind of three-pole AC magnetic-suspension linear motor of constant-current source excitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110112884A (en) |
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2019
- 2019-05-05 CN CN201910366220.9A patent/CN110112884A/en not_active Withdrawn
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| PB01 | Publication | ||
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Application publication date: 20190809 |