CN115347756A - Long primary bilateral permanent magnet linear synchronous motor with C-shaped windings - Google Patents

Long primary bilateral permanent magnet linear synchronous motor with C-shaped windings Download PDF

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Publication number
CN115347756A
CN115347756A CN202210868670.XA CN202210868670A CN115347756A CN 115347756 A CN115347756 A CN 115347756A CN 202210868670 A CN202210868670 A CN 202210868670A CN 115347756 A CN115347756 A CN 115347756A
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CN
China
Prior art keywords
winding
shaped
slide rail
rail frame
phase
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Pending
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CN202210868670.XA
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Chinese (zh)
Inventor
黄垂兵
孙兆龙
卯寅浩
贾光勇
钱翰宁
郑方正
鲁梦昆
曾溶涛
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Naval University of Engineering PLA
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Naval University of Engineering PLA
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Priority to CN202210868670.XA priority Critical patent/CN115347756A/en
Publication of CN115347756A publication Critical patent/CN115347756A/en
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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
    • H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • 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
    • 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
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Linear Motors (AREA)

Abstract

The invention discloses a long primary bilateral permanent magnet linear synchronous motor with a C-shaped winding, which comprises a C-shaped winding support piece, an I-shaped rotor, a slide rail frame and a C-shaped primary winding, wherein the C-shaped winding support piece comprises a left support piece and a right support piece which are of a C-shaped structure; the length of the end part is reduced, the end part space is saved, the resistance and the inductance of a motor winding are reduced, and the motor efficiency is improved; compact structure and high thrust density.

Description

Long primary bilateral permanent magnet linear synchronous motor with C-shaped windings
Technical Field
The invention belongs to the field of permanent magnet linear synchronous motors, and particularly relates to a short-stroke C-shaped winding long-primary permanent magnet linear motor which is particularly suitable for high-speed high-thrust application occasions with high thrust density requirements and strict volume weight and space size constraints.
Background
Compared with the traditional rotating motor, the linear motor adopts a direct driving mode, structurally weakens transmission links such as gears, chains and the like, has the outstanding advantages of high thrust density, high precision and reliability and the like, and is widely applied to the fields of high-precision numerical control machines, photoetching machines, complete equipment for manufacturing 3C products, high-speed logistics, cordless elevators and the like. And the permanent magnet linear synchronous motor made of the permanent magnet material with high magnetic energy product, high intrinsic coercive force and hard intrinsic characteristics further reduces the quality and control difficulty of a motor system, and can be applied to vehicle-mounted mobile transmitting occasions.
The permanent magnet linear synchronous motor is mainly applied to high-speed high-thrust application occasions, and the high-speed high-thrust application occasions have high requirements on size limitation, volume weight and the like, so that the requirements cannot be met by using a single-side or double-side linear motor with a traditional structure.
Disclosure of Invention
The invention aims to solve the problem that a single-side or double-side linear motor with a traditional structure is difficult to meet the requirements of high-speed and high-thrust application occasions on size limitation and volume weight.
Aiming at the problems, the technical scheme adopted by the invention is as follows: a C-shaped winding long primary bilateral permanent magnet linear synchronous motor comprises a C-shaped winding support piece, an I-shaped rotor, a slide rail frame and a C-shaped primary winding fixedly arranged on the C-shaped winding support piece, wherein the C-shaped winding support piece comprises a left support piece and a right support piece which are of a C-shaped structure, the left support piece and the right support piece which are symmetrically arranged in the left-right direction are identical in structure, and a gap is formed in the middle of each left support piece and the right support piece; the sliding rail frame is erected at the upper end and the lower end of the C-shaped winding supporting piece and comprises a left sliding rail frame and a right sliding rail frame, the bottom and the top of the left supporting piece are both provided with the left sliding rail frame, the bottom and the top of the right supporting piece are both provided with the right sliding rail frame, the left sliding rail frame and the right sliding rail frame are hollow tubular structures with hollow left and right side surfaces, the middle part of an I-shaped rotor is sleeved in a gap between the left supporting piece and the right supporting piece, and the top and the bottom of the I-shaped rotor are sleeved in a sliding rail groove formed by hollowing the left sliding rail frame and the right sliding rail frame; the C-shaped primary winding is a multi-phase winding and comprises an effective edge and end bending parts which are bent outwards at two ends of the effective edge, and the effective edge is attached to the middle part of the winding support part.
Furthermore, the I-shaped rotor is made of a permanent magnet material and provides driving excitation for the motor.
Further, the C-type primary winding is a six-phase winding and comprises an A1-phase winding 10, a B1-phase winding 11, a C1-phase winding 12, an A2-phase winding 16, a B2-phase winding 17 and a C2-phase winding 18; the current phases of the A1-phase winding and the B1-phase and C1-phase windings are different by 120 degrees, the current phases of the A2-phase winding and the B2-phase and C2-phase windings are also different by 120 degrees, and the current phases of the A1-phase and A2-phase windings are different by 30 degrees; in the spatial structure, the effective edge of each phase of winding is attached to the long edge of a winding support piece 1, the bending parts at the two end parts are bent at 90 degrees in the same direction, the effective edge is bent in 180 degrees in the opposite direction after extending out of the effective edge by 1/8-1/12 length, and the effective edge returns to the bending part of the winding support piece 1 and is bent at 90 degrees again to return to the effective edge of the winding in the same phase; the bending treatment can reduce the length of the end part of the primary winding of the motor to the maximum extent, thereby reducing the resistance inductance of the motor winding and reducing the winding quality.
Furthermore, the inner sides of the left support piece and the right support piece are provided with a plurality of structural support bars, the stator winding is connected to the left support piece and the right support piece through a colloid material after being wound, and a gap between the left support piece and the right support piece is a movement area of the I-shaped rotor, so that a straight track is provided for movement of the secondary permanent magnet.
Furthermore, the I-shaped rotor comprises a middle beam and a conducting piece, wherein the middle beam comprises four permanent magnets which are magnetized in different directions, is in a Halbach magnetizing mode, moves in a track formed by a C-shaped winding supporting piece and a winding and provides an excited air gap magnetic field for the motor; the transmission piece is embedded and fixed with the middle beam and moves in the slide rail frame to play a role in connecting a load and transmitting electromagnetic force generated by the motor.
Furthermore, the conducting piece is made of a Kavora aviation composite material.
Further, the right slide rail frame comprises a load restraint slide rail and a rotor movement groove frame; the rotor motion groove frame is of a hollow tubular structure (the top and the bottom of an I-shaped rotor are sleeved in the hollow part), the left side and the right side of the rotor motion groove frame are hollowed out, the load constraint slide rail provides track constraint for load motion, the rotor motion groove frame provides a groove cavity for rotor part motion to play a supporting role, and the left slide rail frame structure and the right slide rail frame structure are the same.
Furthermore, the load restraint slide rail comprises an upper restraint edge strip and a lower restraint edge strip, the upper restraint edge strip is arranged on the upper edge of the hollowed-out positions of the left side and the right side of the rotor movement groove frame, the lower restraint edge strip is arranged on the lower edge of the rotor movement groove frame, the upper restraint edge strip and the lower restraint edge strip are both T-shaped structures, and the top of each T-shaped structure plays a role in restraining the I-shaped rotor.
Furthermore, a base connecting plate is fixedly arranged on the slide rail frame, the base connecting plate is a solid alloy block, the slide rail frame is connected to the motor base, and the function of fixing the motor and the slide rail is achieved.
The invention has the advantages and characteristics that:
(1) The invention relates to a long primary short secondary C-shaped permanent magnet linear synchronous motor; the bending part of the primary winding adopts a bending form, so that the length of the end part is reduced, the space of the end part is saved, the resistance and the inductance of the motor winding are reduced, and the motor efficiency is improved.
(2) The invention relates to a long primary short secondary C-shaped permanent magnet linear synchronous motor; the motor with the flat-long structure has compact structure, small volume and weight and higher thrust density.
Drawings
Fig. 1 is a schematic view of the overall structure of a short-stroke C-type permanent magnet linear motor according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of a partially enlarged structure of a C-type primary winding according to a preferred embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of the structure of FIG. 2;
fig. 4 is a schematic diagram of the overall structure of the C-type primary winding according to the preferred embodiment of the present invention;
FIG. 5 is a schematic structural view of a combination of a C-shaped primary winding and a center beam according to a preferred embodiment of the present invention;
FIG. 6 is a cross-sectional view of the structure of FIG. 5;
FIG. 7 is a schematic top view of the structure of FIG. 5;
FIG. 8 is a cross-sectional structure diagram of the I-shaped mover of FIG. 1;
FIG. 9 is a schematic view of the slide rack of FIG. 1 shown with the top surface thereof removed;
FIG. 10 is a schematic view of the structure of FIG. 1 in a middle longitudinal section;
FIG. 11 is a schematic structural view of an I-shaped mover according to a preferred embodiment of the present invention;
FIG. 12 is a schematic view of a C-shaped winding support according to a preferred embodiment of the present invention;
FIG. 13 is a schematic view of the structure of the slide rail frame according to the preferred embodiment of the present invention;
FIG. 14 is a two-dimensional electromagnetic thrust curve (thrust on the ordinate and time on the abscissa) of a preferred embodiment of the invention;
the specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention relates to an overall structure of a long primary short secondary C-shaped permanent magnet linear motor, which includes a C-shaped winding support member 1, an i-shaped rotor 2, a slide rail frame 3, and a base connection plate 4. The I-shaped rotor is made of a permanent magnet material and provides driving excitation for the motor, the slide rail frame 3 provides a sliding track for load movement, a straight track is provided for the I-shaped rotor 2, the I-shaped rotor is connected to the motor base through the base connecting plate 4 and plays a role of fixing and supporting, and the C-shaped winding supporting piece 1 provides a fixing component for the primary winding and plays a role of supporting the stator. The use of the C-shaped winding reduces the end length of the motor winding, reduces the end loss of the motor, increases the transmission efficiency of the motor, and reduces the volume and mass of the motor.
3-7 show the structure schematic diagram of the C-type primary winding, the C-type primary winding includes a phase winding A1, a phase winding B1, a phase winding C1, a phase winding A2, a phase winding B2, and a phase winding C2; the effective edge of each phase of winding is attached to the long edge of the winding support piece 1, the two end parts of the winding are bent at 90 degrees in the same direction, the winding is bent at 180 degrees in space after the winding extends out of 1/8-1/12 of the length of the effective edge, and the bending part of the winding support piece 1 is bent at 90 degrees again to return to the same-phase effective edge of the winding support piece. The permanent magnets 14 are in a C-shaped winding with a 1-4mm air gap 15 between them and the three-phase ac winding.
Fig. 8-10 are sectional views of the general structure of the motor from different views, respectively.
Fig. 11 is a schematic structural diagram of an electrical i-shaped rotor, the structure of which is i-shaped, a middle beam 2-1 with high magnetic energy product, high intrinsic coercive force and hard intrinsic characteristics is arranged on a middle beam of the rotor, the middle beam 2-1 is mainly formed by combining four permanent magnets magnetized in different directions, and the rotor moves in a track formed by a C-shaped winding support and a winding in a Halbach magnetizing mode to provide a mainly excited air gap magnetic field for a motor. The upper and lower conduction pieces 2-2 of the rotor are made of light clamping Vola composite materials, are embedded and fixed with the permanent magnet 2-1, move in the slide rail frame and play a role in connecting loads and conducting electromagnetic force generated by a motor.
Referring to fig. 12, the C-shaped winding supporting member 1 includes a left supporting member 1-1 and a right supporting member 1-2, the inner sides of which are provided with a plurality of structural supporting bars 1-3, the stator winding is connected to the left supporting member 1-1 and the right supporting member 1-2 through a glue material after being wound, and a gap between the left supporting member 1-1 and the right supporting member 1-2 is a movement area of the i-shaped mover 2, so as to provide a straight track for movement of the secondary permanent magnet.
Referring to fig. 13, the right slide rail frame 3-2 includes a load restraining slide rail 3-4 and a mover movement slot frame 3-5; the rotor motion groove frame 3-5 is a hollow tubular structure with hollow left and right sides, the load constraint slide rail 3-4 provides track constraint for load motion, the rotor motion groove frame 3-2 provides a groove cavity for rotor part motion to play a supporting role, the left slide rail frame 3-1 and the right slide rail frame 3-2 are identical in structure, and the material is made of light aviation material. Plays the role of connection and support.
Referring to fig. 14, fig. 14 shows an example calculation performed by the present embodiment, where the steady-state electromagnetic thrust curve of fig. 14 shows an average value of 21.12kN, a maximum thrust of 21.36kN, a minimum thrust of 20.83kN, and a peak value of a thrust fluctuation peak of about 0.53kN, which is about 2.5% of the average value; the thrust fluctuation of the scheme is small, and the thrust stability is good.
The invention designs the C-shaped permanent magnet linear motor structure with the flat-long structure with long width and short height, and the C-shaped permanent magnet linear motor structure has a specific application function on high-speed and high-thrust application occasions. The form of using C type winding makes the motor increase effective limit, has increased the thrust under motor unit volume and the weight, and thrust density is great, and can satisfy corresponding space demand.
The foregoing shows and describes the general principles and features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only for the purpose of illustrating the structural relationship and principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (9)

1. The long primary bilateral permanent magnet linear synchronous motor with the C-shaped winding is characterized by comprising a C-shaped winding support member (1), an I-shaped rotor (2), a slide rail frame (3) and a C-shaped primary winding (5) fixedly arranged on the C-shaped winding support member, wherein the C-shaped winding support member (1) comprises a left support member (1-1) and a right support member (1-2) which are of C-shaped structures, the left support member (1-1) and the right support member (1-2) which are symmetrically arranged in the left and right directions are identical in structure, and gaps are formed in the middle of the left support member (1-1) and the right support member (1-2); the C-shaped winding support is characterized in that a slide rail frame (3) is erected at the upper end and the lower end of a C-shaped winding support piece (1), the slide rail frame (3) comprises a left slide rail frame (3-1) and a right slide rail frame (3-2), the bottom and the top of the left support piece are respectively provided with the left slide rail frame (3-1), the bottom and the top of the right support piece are respectively provided with the right slide rail frame (3-2), the left slide rail frame (3-1) and the right slide rail frame (3-2) are of hollow tubular structures with hollowed left and right side surfaces, the middle part of an I-shaped rotor (2) is sleeved in a gap between the left support piece (1-1) and the right support piece (1-2), and the top and the bottom of the I-shaped rotor (2) are sleeved in a slide rail groove formed by the hollowed left slide rail frame (3-1) and the right slide rail frame (3-2); the C-shaped primary winding (5) is a multi-phase winding and comprises an effective edge (5-1) and end bending parts (5-2) which are bent outwards at two ends of the effective edge, and the effective edge (5-1) is attached to the middle of the winding support piece (1).
2. The long-primary bilateral permanent magnet linear synchronous motor with the C-shaped winding as claimed in claim 1 is characterized in that the I-shaped rotor (2) is made of permanent magnet materials and provides driving excitation for the motor.
3. The long-primary bilateral permanent magnet linear synchronous motor with the C-shaped windings according to claim 1 is characterized in that the C-shaped primary windings (5) are six-phase windings and comprise an A1-phase winding 10, a B1-phase winding 11, a C1-phase winding 12, an A2-phase winding 16, a B2-phase winding 17 and a C2-phase winding 18; the current phases of the A1-phase winding and the B1-phase and C1-phase windings are different by 120 degrees, the current phases of the A2-phase winding and the B2-phase and C2-phase windings are also different by 120 degrees, and the current phases of the A1-phase and A2-phase windings are different by 30 degrees; in the space structure, the effective edge of each phase of winding is attached to the long edge of the winding support piece 1, the bending processing of 90 degrees in the same direction is carried out at the bending parts (5-2) at the two end parts, the reverse bending of 180 degrees in the space is carried out after the effective edge extends out by 1/8-1/12 of the length of the effective edge, the effective edge returns to the bending part of the winding support piece 1, and the effective edge returns to the effective edge (5-1) of the same phase of winding after 90 degrees of bending is carried out again; the bending treatment can reduce the length of the end part of the primary winding of the motor to the maximum extent, thereby reducing the resistance inductance of the motor winding and reducing the winding quality.
4. The long-primary bilateral permanent magnet linear synchronous motor with the C-shaped winding according to claim 1 is characterized in that a plurality of structural support bars (1-3) are arranged on the inner sides of the left support member (1-1) and the right support member (1-2), the stator winding is connected to the left support member (1-1) and the right support member (1-2) through glue after being wound, and a gap between the left support member (1-1) and the right support member (1-2) is a movement area of an I-shaped rotor (2) and provides a straight track for movement of a secondary permanent magnet.
5. The C-winding long-primary bilateral permanent magnet linear synchronous motor of claim 1, wherein: the I-shaped rotor (2) comprises a middle beam (2-1) and a conducting piece (2-2), the middle beam (2-1) comprises four permanent magnets which are magnetized in different directions, the Halbach magnetizing mode is adopted, the middle beam moves in a track formed by a C-shaped winding supporting piece and a winding, and an exciting air gap magnetic field is provided for the motor; the conduction piece (2-2) is embedded and fixed with the middle beam (2-1) and moves in the slide rail frame to play a role in connecting a load and conducting electromagnetic force generated by a motor.
6. The long-primary bilateral permanent magnet linear synchronous motor with the C-shaped winding as claimed in claim 1 is characterized in that the conducting piece (2-2) is made of a Kavora aeronautical composite material.
7. The C-type winding long-primary bilateral permanent magnet linear synchronous motor according to claim 1, wherein the right slide rail frame (3-2) comprises a load constraint slide rail (3-4) and a rotor motion slot frame (3-5); the rotor motion groove frame (3-5) is of a hollow tubular structure with the left side and the right side hollowed out, the load constraint slide rail (3-4) provides track constraint for load motion, the rotor motion groove frame (3-2) provides a groove cavity for rotor motion to play a supporting role, and the structure of the left slide rail frame (3-1) is the same as that of the right slide rail frame (3-2).
8. The long-primary bilateral permanent magnet linear synchronous motor with the C-shaped windings according to claim 7 is characterized in that the load constraint slide rails (3-4) comprise upper constraint edgings (3-4-1) arranged at the upper edges of hollowed-out positions on the left side and the right side of the rotor motion slot frame (3-5) and lower constraint edgings (3-4-2) arranged at the lower edges, the upper constraint edgings and the lower constraint edgings are both of T-shaped structures, and the top of each T-shaped structure plays a role in constraining an I-shaped rotor (2).
9. The long-primary bilateral permanent magnet linear synchronous motor with the C-shaped winding according to claim 1 is characterized in that a base connecting plate (4) is further fixedly arranged on the slide rail frame (3), the base connecting plate (4) is a solid alloy block, and the slide rail frame (3) is connected to a motor base to play a role in fixing a motor and a slide rail.
CN202210868670.XA 2022-07-22 2022-07-22 Long primary bilateral permanent magnet linear synchronous motor with C-shaped windings Pending CN115347756A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210868670.XA CN115347756A (en) 2022-07-22 2022-07-22 Long primary bilateral permanent magnet linear synchronous motor with C-shaped windings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210868670.XA CN115347756A (en) 2022-07-22 2022-07-22 Long primary bilateral permanent magnet linear synchronous motor with C-shaped windings

Publications (1)

Publication Number Publication Date
CN115347756A true CN115347756A (en) 2022-11-15

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CN202210868670.XA Pending CN115347756A (en) 2022-07-22 2022-07-22 Long primary bilateral permanent magnet linear synchronous motor with C-shaped windings

Country Status (1)

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