CN212033982U - Hybrid AC magnetic suspension linear motor - Google Patents
Hybrid AC magnetic suspension linear motor Download PDFInfo
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- CN212033982U CN212033982U CN201920623536.7U CN201920623536U CN212033982U CN 212033982 U CN212033982 U CN 212033982U CN 201920623536 U CN201920623536 U CN 201920623536U CN 212033982 U CN212033982 U CN 212033982U
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Abstract
The utility model discloses a hybrid exchanges magnetic suspension linear electric motor, including stator (1), active cell (2), stator (1) is fixed through three connector (7) including the same stator core (6) of three structure between stator core (6), is provided with axial magnetized permanent magnet (11) in the middle of every connector (7), the utility model discloses not only effectively solved traditional motor and increased the transform mechanism, can not satisfy the problem of performance demand, effectively solved traditional linear electric motor stator and active cell own friction problem moreover to only need an dc-to-ac converter just can realize the active cell suspension, system simple structure, the cost is low.
Description
Technical Field
The utility model relates to a motor manufacturing technology field, concretely relates to friction, wearing and tearing, control is simple, and the operation is reliable, takes load capacity reinforce, and response speed is fast, compact structure, and the low-power consumption hybrid exchanges magnetic suspension linear electric motor that can produce stable radial suspension power.
Background
With the rapid development of automatic control technology and microcomputers, higher requirements are put forward on the positioning accuracy of a linear motion control system, and the traditional linear motion driving device formed by a rotary motor and a set of conversion mechanism has the disadvantages of large system volume, transmission noise and transmission loss, low transmission efficiency, easy damage of the conversion mechanism, and difficult maintenance of the linear conversion mechanism in the field of precise linear transmission. Mechanical friction and abrasion exist between the stator and the rotor of the traditional linear motor, so that the temperature of the stator and the rotor is increased, the temperature is particularly obvious when the linear motor runs at a high speed, and the positioning precision and the linear motion acceleration of the linear motor are reduced.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a magnetic suspension linear electric motor is exchanged to low-power consumption hybrid, the utility model discloses not only effectively solved traditional motor increase transform mechanism, can not satisfy the problem of control system performance demand, effectively solved traditional linear electric motor stator moreover and had the friction problem with active cell oneself.
The utility model discloses a following technical scheme realizes:
the utility model provides a hybrid exchanges magnetic suspension linear electric motor, includes stator (1), active cell (2), its characterized in that: the stator (1) comprises three stator cores (6) with the same structure, the stator cores (6) are fixed through three connectors (7), an axially magnetized permanent magnet (11) is arranged in the middle of each connector (7), each stator core (6) comprises a suspension core (14) and 3 axial control cores (15) with the same radian, the inner wall of each suspension core (14) is fixed with the outer walls of the 3 axial control cores (15) into a whole through a magnetism isolating aluminum ring (13), 3 stator suspension teeth (16) protruding inwards are arranged on the inner wall of each suspension core (14) along the circumference in an equal angle mode, a suspension winding (9) is wound on each suspension core, the suspension windings (9) are in a Y-shaped connection mode of three-phase symmetrical windings, the three-phase symmetrical windings on adjacent suspension cores (14) are connected in a parallel mode and are powered by a three-phase inverter, 3 stator teeth (8) protruding inwards are arranged on the inner wall of each axial control core (15) along the circumference in an equal, an axial control winding (10) is correspondingly wound on the upper surface of the coil;
the rotor (2) comprises a rotor shaft (3), M rotor cores (4) which are arranged along the axial direction are sleeved on the rotor shaft (3), 3 rotor suspension teeth (12) which penetrate through the rotor shaft (3) are arranged on the circumferences of the M rotor cores (4) at equal angles along the radial direction, and 9 rotor teeth (5) are uniformly arranged in the residual space on the circumferential surface of each rotor core (4).
The utility model discloses further technical improvement scheme is:
the stator teeth (8) and the rotor teeth (5) as well as the stator suspension teeth (16) and the rotor suspension teeth (12) are arranged correspondingly, and the connecting body (7) is arranged between the side walls of the suspension iron cores (14) corresponding to the adjacent stator suspension teeth (16).
The utility model discloses further technical improvement scheme is:
the adjacent stator suspension teeth (16) are all 120 degrees along the circumferential included angle, and 3 stator teeth (8) are arranged at equal angles.
The utility model discloses further technical improvement scheme is:
the adjacent rotor suspension teeth (12) are all 120 degrees in included angle along the circumferential direction, and 3 rotor teeth (5) are arranged at equal angles.
The utility model discloses further technical improvement scheme is:
the width and the thickness of the stator teeth (8) and the rotor teeth (5) are both set to be A, the distance between adjacent stator iron cores (6) is also set to be A, the distance between adjacent rotor iron cores (4) is set to be 2A, M and A are set randomly according to the total axial movement distance and each axial movement distance, and M is a natural number larger than 3.
The utility model discloses further technical improvement scheme is:
the stator (1) and the rotor (2) are coaxial hollow cylindrical structures, and the rotor (2) is located inside the stator (1).
The utility model discloses further technical improvement scheme is:
the stator (1), the rotor (2) and the connector (7) are all made of magnetic materials.
Compared with the prior art, the utility model, following obvious advantage has:
the utility model discloses a suspension iron core sets up three-phase symmetry suspension winding on X, X +120, the stator suspension tooth of X-120 department respectively, its circular telegram produces suspension magnetic field and offset magnetic field interact and produces the suspension force opposite with rotor skew direction, realizes that the active cell does not have contact suspension support, improves the sensitivity, rapidity and the follow-up of system greatly, and mechanical friction loss is zero, and the trouble is few, and non-maintaining is safe and reliable, long service life to the work; and only one inverter can realize stable suspension with two radial degrees of freedom, and the manufacturing cost is low.
Second, the utility model discloses be provided with 3 length and the same active cell suspension teeth of active cell axial length in M active cell iron core X, X +120, X-120 orientation department, linear motion is being done at the motor can produce continuous incessant, stable radial suspension power.
Three, the utility model discloses insert axial magnetization's permanent magnet in the connector for produce the bias magnetic flux, the active cell realizes its stable suspension by the bias magnetic flux when balanced position, and the suspension winding need not the electric current, reduces the motor consumption, and when the active cell is skew balanced position, adjusts the bias magnetic flux by the suspension winding circular telegram, realizes that the active cell stably suspends compact structure, and is efficient, the low power dissipation.
Four, the utility model discloses axial control is unshakable in one's determination separates through separating magnetism aluminium piece with suspension, and no coupling between linear motion and the suspension, independent control between linear motion and the radial suspension, control are simple, reliable.
Fifth, the utility model discloses the active cell axial displacement distance equals with tooth thickness and stator tooth pitch at every turn, consequently can freely design linear motion distance at every turn according to application field, pinpoints, uses in a flexible way.
Drawings
Fig. 1 is a side view of the present invention;
fig. 2 is a front view of the present invention;
FIG. 3 is a diagram of the bias magnetic field distribution of the present invention;
fig. 4 is the magnetic field distribution diagram of the X-direction levitation winding of the present invention.
Detailed Description
The utility model discloses the principle based on is:
suspension principle: the suspension principle is explained by taking the radial suspension force in the + x direction as an example, the bias magnetic flux is as shown in fig. 3, and due to the existence of the magnetic isolation aluminum ring 13 made of the magnetic isolation material, the bias magnetic flux generated by the permanent magnet 11 is emitted from the N pole of the permanent magnet 11, passes through the three stator suspension teeth 16, the air gap, the three rotor teeth 5 on one side, passes through the three rotor teeth 5, the air gap and the three stator suspension teeth 16 on the other side along the axial direction of the rotor 2, and returns to the S pole to form a closed path along the axial direction. The three levitation windings 9 on each stator core 6 are energized to generate a levitation magnetic flux, which forms a radial closed path only between the yoke portion of each stator core 6, the three stator levitation teeth 16, the air gap, and the three rotor teeth 5 due to the presence of the magnetism isolating aluminum ring 13 and the permanent magnets 11, as shown by the dotted lines in fig. 4. The suspension windings 9 of the three stator cores 6 can be connected in series or in parallel, a magnetic field generated by electrifying and a bias magnetic field generated by the permanent magnet 11 are mutually superposed, so that the superposition of the magnetic field in the radial offset direction of the rotor 2 is weakened, the magnetic field in the opposite direction is strengthened, and the radial suspension force pointing to the magnetic field strengthening direction is generated according to the Maxwell force generation principle. The generation of the suspension force in other directions can be realized only by adjusting the three-phase symmetrical winding current on each stator core according to the x-direction eccentric signal and the y-direction eccentric signal detected by the displacement sensor.
The principle of linear motion: when the rotor is at the initial position, the Mth rotor core 4 is aligned with the outer stator core 6, the right side of the middle stator core 6 is aligned with the left sides of the M +1 stator cores 4, the axial control winding 10 in the outer stator core 6 is powered off, the axial control winding 10 in the middle stator core 4 is powered on, the rotor 2 moves to the left by A, the axial control winding 10 in the middle stator core 6 is powered off, the axial control winding 10 in the inner stator core 6 is powered on, the rotor 2 moves to the left by A, the process is repeated, and the rotor 2 continuously moves to the left; if a rightward motion is required, the sequence of energization of the axial control winding 10 is changed. The number of the required stators 1 can be determined according to the size of the radial load and the axial length, namely the stators 1 can be used together, the number of the stator suspension teeth 16 on each stator core 6 can be integral multiple of 3, and the number of the stator teeth 8 is more than or equal to 2.
The principles and embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 4, the utility model discloses a stator 1 and active cell 2, be in X, X +120, 6 connectors 7 of X-120 orientation are connected the same stator core 6 of three structure as stator 1, insert an axial magnetization's permanent magnet 11 in every connector 7, every stator core 6 is linked as an organic whole suspension core 14 and 3 axial control cores 15 by 3 magnetic isolation aluminium pieces 13, X, X +120 of suspension core 14, X-120 orientation punishment do not are equipped with 3 stator suspension teeth 16 that inwards protrude, it is winding three-phase symmetry suspension winding 9 on it, every axial control core is equipped with 3 stator teeth 8 that inwards protrude, on it axial control winding 10; the mover comprises a mover shaft 3, M mover cores 4 which are axially arranged are sleeved on the peripheral surface of the mover shaft 3, 3 mover suspension teeth 12 which penetrate through the whole shaft length are arranged in the X, X +120 and X-120 directions of the M mover cores, and 9 mover teeth 5 are uniformly arranged in the peripheral surface residual space of each mover core 4. The stator 1 is a hollow cylindrical structure coaxial with the rotor 2, the rotor 2 is located inside the stator 1, the stator teeth 8 and the rotor teeth 5 are arranged, and the stator suspension teeth 16 and the rotor suspension teeth 12 are arranged in a one-to-one correspondence mode. M is a natural number and M is greater than 3, the width and the thickness of the stator teeth 8 and the rotor teeth 5 are A, the distance between adjacent stator iron cores 6 is A, the distance between adjacent rotor iron cores 4 is 2A, and M and A can be set arbitrarily according to the total axial movement distance and each axial movement distance.
In an embodiment, a permanent magnet 11 magnetized in the axial direction is arranged in the middle of the connector 7, as shown in fig. 3, the bias magnetic flux generated by the permanent magnet 11 only forms a closed loop in the axial direction of the stator core, the connector, the stator suspension teeth in X, X +120 and the X-120 directions, the X, X +120 of the rotor core, the rotor suspension teeth in the X-120 directions, and the rotor core, and is used for generating the bias magnetic flux, and the bias magnetic fields are distributed in the axial direction, so that the power consumption of the motor is reduced.
The stator 1, the rotor 2 and the connector 7 are made of magnetic conductive materials, and cast iron is adopted in the embodiment.
The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.
Claims (7)
1. The utility model provides a hybrid exchanges magnetic suspension linear electric motor, includes stator (1), active cell (2), its characterized in that: the stator (1) comprises three stator cores (6) with the same structure, the stator cores (6) are fixed through three connectors (7), a permanent magnet (11) magnetized in the axial direction is arranged in the middle of each connector (7), the stator iron core (6) comprises a suspension iron core (14) and 3 axial control iron cores (15) with the same radian, the inner wall of the suspension iron core (14) is fixed with the outer walls of the 3 axial control iron cores (15) into a whole through a magnetism isolating aluminum ring (13), 3 stator suspension teeth (16) protruding inwards are arranged on the inner wall of the suspension iron core (14) at equal angles along the circumferential direction, a suspension winding (9) is wound on the axial control iron core, the suspension winding (9) adopts a three-phase symmetrical winding Y-shaped connection mode, 3 stator teeth (8) which protrude inwards are arranged on the inner wall of each axial control iron core (15) at equal angles along the circumferential direction, and the axial control winding (10) is correspondingly wound on the inner wall of each axial control iron core;
the rotor (2) comprises a rotor shaft (3), M rotor cores (4) which are arranged along the axial direction are sleeved on the rotor shaft (3), 3 rotor suspension teeth (12) which penetrate through the rotor shaft (3) are arranged on the circumferences of the M rotor cores (4) at equal angles along the radial direction, and 9 rotor teeth (5) are uniformly arranged in the residual space on the circumferential surface of each rotor core (4);
bias magnetic flux generated by the permanent magnet (11) forms a closed loop only in the axial directions of the stator core (6), the connector (7), stator suspension teeth (16) in the X, X +120 and X-120 directions, the X, X +120 degrees of the mover core (4), the mover suspension teeth (12) in the X-120 directions and the mover core (4).
2. A hybrid ac magnetic levitation linear motor as recited in claim 1, wherein: the stator teeth (8) and the rotor teeth (5) as well as the stator suspension teeth (16) and the rotor suspension teeth (12) are correspondingly arranged.
3. A hybrid ac magnetic levitation linear motor as recited in claim 2, wherein: the adjacent stator suspension teeth (16) are all 120 degrees along the circumferential included angle, and 3 stator teeth (8) are arranged at equal angles.
4. A hybrid ac magnetic levitation linear motor as recited in claim 1 or 2, wherein: the adjacent rotor suspension teeth (12) are all 120 degrees in included angle along the circumferential direction, and 3 rotor teeth (5) are arranged at equal angles.
5. A hybrid ac magnetic levitation linear motor as recited in claim 1 or 2, wherein: the width and the thickness of the stator teeth (8) and the rotor teeth (5) are both set to be A, the distance between adjacent stator iron cores (6) is also set to be A, the distance between adjacent rotor iron cores (4) is set to be 2A, M and A are set randomly according to the total axial movement distance and each axial movement distance, and M is a natural number larger than 3.
6. A hybrid ac magnetic levitation linear motor as recited in claim 1 or 2, wherein: the stator (1) and the rotor (2) are coaxial hollow cylindrical structures, and the rotor (2) is located inside the stator (1).
7. A hybrid ac magnetic levitation linear motor as recited in claim 1 or 2, wherein: the stator (1), the rotor (2) and the connector (7) are all made of magnetic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920623536.7U CN212033982U (en) | 2019-05-05 | 2019-05-05 | Hybrid AC magnetic suspension linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920623536.7U CN212033982U (en) | 2019-05-05 | 2019-05-05 | Hybrid AC magnetic suspension linear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212033982U true CN212033982U (en) | 2020-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920623536.7U Active CN212033982U (en) | 2019-05-05 | 2019-05-05 | Hybrid AC magnetic suspension linear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212033982U (en) |
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2019
- 2019-05-05 CN CN201920623536.7U patent/CN212033982U/en active Active
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