CN210518074U - Permanent magnet motor with horseshoe-shaped winding - Google Patents
Permanent magnet motor with horseshoe-shaped winding Download PDFInfo
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- CN210518074U CN210518074U CN201921622554.XU CN201921622554U CN210518074U CN 210518074 U CN210518074 U CN 210518074U CN 201921622554 U CN201921622554 U CN 201921622554U CN 210518074 U CN210518074 U CN 210518074U
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Abstract
The utility model discloses a horseshoe-shaped winding permanent magnet motor, which comprises a rotor unit, a stator unit, a motor shaft, a stator unit and a stator unit, wherein the rotor unit is arranged in the stator unit; the annular stator that stator unit is enclosed by a plurality of horseshoe type stators, horseshoe type stator is folded by the silicon steel sheet, twines stator winding on two legs of horseshoe type stator and forms horseshoe type stator core, and the casing suit is in stator unit's periphery, and rotor unit includes rotor yoke portion and a plurality of magnet of pasting on rotor yoke portion surface, and rotor yoke portion is connected to the motor shaft. The advantage, this permanent-magnet machine has proposed a compound magnetic circuit structure through designing the mounting structure of winding on the stator to improve permanent-magnet machine torque density and power density and realize the lightweight, and adopt the vacuum embedment scheme with the stator assembly, improve the radiating effect, have higher torque density excellence.
Description
Technical Field
The utility model relates to a horseshoe type winding permanent-magnet machine belongs to permanent-magnet machine technical field.
Background
Compared with the traditional electrically excited motor, the permanent magnet motor has the advantages of simple and compact structure, high operation reliability, small size, light weight, low loss, high efficiency, high control precision and the like. The shape and size of the permanent magnet motor are different from those of a conventional induction motor, and the permanent magnet motor has the remarkable advantages of flexibility, diversity and the like. And thus has received wide attention from various industries, both industrial and civilian.
SUMMERY OF THE UTILITY MODEL
The utility model provides a horseshoe type winding permanent-magnet machine adopts horseshoe type stator core, and concrete technical scheme is:
a permanent magnet motor with a horseshoe-shaped winding comprises a stator unit, a rotor unit and a cooling annular pipeline unit, wherein the rotor unit is arranged in the stator unit, the cooling annular pipeline unit is encapsulated in the stator unit, and a motor shaft is connected with the rotor unit;
the stator unit is an annular stator formed by encircling a plurality of horseshoe-shaped stators, the openings of all the horseshoe-shaped stators face inwards, the horseshoe-shaped stators are formed by laminating silicon steel sheets, stator windings are wound on two legs of each horseshoe-shaped stator to form a horseshoe-shaped stator core, and a magnetic field at one end of a U-shaped winding defining the horseshoe-shaped stator core is an N pole while a magnetic field at the other end of the U-shaped winding defines an S pole; an iron core frame is fixed at the end part of each leg of the horseshoe-shaped stator iron core, and a gap is reserved between the two iron core frames on each horseshoe-shaped stator iron core; gaps are reserved between every two adjacent iron core frames on every two adjacent horseshoe-shaped stator iron cores forming the annular stator, and the N poles and the S poles of every two adjacent horseshoe-shaped stator iron cores forming the annular stator are alternately arranged;
the cooling annular pipeline unit comprises four layers of annular pipelines which are sequentially sleeved, namely a first layer of annular pipeline, a second layer of rectangular wavy annular pipeline, a third layer of annular pipeline and a fourth layer of rectangular wavy annular pipeline, wherein the four layers of annular pipelines are shaped and communicated through radial communicating pipes, and an inlet and an outlet are connected to the communicating pipes;
the first layer of annular pipeline and the third layer of annular pipeline are positioned in an opening of the horseshoe stator, the second layer of rectangular wavy annular pipeline and the fourth layer of rectangular wavy annular pipeline are sleeved on the horseshoe stator iron core, and each rectangular wave in the second layer of rectangular wavy annular pipeline and the fourth layer of rectangular wavy annular pipeline respectively corresponds to each horseshoe stator iron core and is used for dissipating heat and cooling the horseshoe stator iron core;
the shell is sleeved on the periphery of the stator unit, epoxy resin is filled in gaps among the stator unit, the cooling annular pipeline unit and the shell, the epoxy resin is adopted for vacuum casting and solidification forming, and the stator unit, the cooling annular pipeline unit and the shell are solidified into an integral stator assembly;
the rotor unit comprises a rotor yoke part and a plurality of magnets adhered to the outer surface of the rotor yoke part, the magnets are arranged in two rings corresponding to the ring-shaped stator, and the magnets positioned on the same circumference are alternately arranged in an N pole and an S pole; gaps are reserved between adjacent magnets on the same circumference, and the number of the magnets and the number of the U-shaped windings are set according to the slot pole matching number of any conventional permanent magnet motor;
the motor shaft is connected with the rotor yoke part.
The utility model discloses a horseshoe type winding permanent-magnet machine' S principle does, and horseshoe type stator winding utilizes U type winding one end magnetic field to be N, then other end magnetic field must be the S utmost point principle to make full use of this principle, place the both ends of N-S utmost point in the air gap magnetic field simultaneously. Therefore, the motor forms an axial magnetic flux shunt and a radial magnetic flux shunt, the action of a magnetic field is greatly utilized, a conventional motor stator yoke is omitted, and the torque density and the power density of the permanent magnet motor are increased. The adjacent two windings of the stator are electrified at a certain time to form N-S/N-S stator magnetic poles, and the two pairs of N-S/N-S magnetic poles correspond to the adjacent magnetic steel N-S/N-S on the rotor.
It is right to the utility model discloses technical scheme's preferred, the iron core frame is the square plate, sets up the leg male hole that supplies horseshoe iron type stator core on the square plate. The iron core frame is made of a magnetic conductive material and is a No. 45 steel plate, a Q235 steel plate or a Q195 steel plate. Because each horseshoe stator core is an independent unit, the horseshoe stator cores are fixed on the core frames, the core frames are made of magnetic conductive materials and have a magnetism gathering effect, and a magnetic circuit cannot be short-circuited between N-S of each core frame and needs to be separated, a gap is reserved between every two adjacent core frames.
To the utility model discloses technical scheme's preferred, magnet adopts magnet steel glue to paste at rotor yoke portion surface. The magnetic steel glue is a purchased part.
It is right to the utility model discloses technical scheme's preferred, the annular that first layer ring pipeline and third layer ring pipeline enclose by the copper pipe, and second floor rectangle wavy ring pipeline and fourth floor rectangle wavy ring pipeline are bent according to the rectangle ripples by the copper pipe and are made and enclose into the annular.
The utility model has the advantages of compared with the prior art:
this permanent-magnet machine has proposed a compound magnetic circuit structure through designing the mounting structure of winding on the stator to improve permanent-magnet machine torque density and power density and realize the lightweight, and adopt the vacuum embedment scheme with the stator assembly, improve the radiating effect, it is excellent to have higher torque density.
1. And a concentrated winding mode is adopted, so that copper materials are saved, and copper consumption is greatly reduced.
2. The horseshoe iron core is adopted, and the iron core is formed by laminating or bonding silicon steel sheets, so that the consumption of the silicon steel sheet material is saved.
3. The horseshoe iron core is adopted, one end of the horseshoe iron core is N-pole, the other end of the horseshoe iron core is S-pole, and coils are wound at two ends of the horseshoe iron core, so that the horseshoe iron core has double magnetism gathering effect and high utilization rate.
4. The horseshoe iron core is adopted, so that the stator loss is low, the magnetic circuit is greatly shortened, and the loss is reduced.
5. The horseshoe iron core utilizes both axial magnetic circuit and radial magnetic circuit, and belongs to a mixed magnetic circuit permanent magnet motor.
6. The horseshoe iron core can be made into multiple poles, is suitable for low-speed and large-torque occasions, and greatly reduces the weight of the whole machine.
7. The cooling annular pipeline unit is solidified with the stator into a whole, so that a shell-clamping water-cooling machine shell in the prior art is omitted.
Drawings
Fig. 1 is a schematic view of the structure of a horseshoe-type stator core.
Fig. 2 is a schematic diagram of an analog motor forming an axial flux shunt.
Fig. 3 is a schematic diagram of a simulated motor forming a radial flux shunt.
Fig. 4 is a schematic diagram of two adjacent horseshoe stator core windings energized to form N-S/N-S stator poles.
FIG. 5 is a schematic view of the two pairs of N-S/N-S poles of FIG. 4 corresponding to adjacent magnetic steels N-S/N-S on the rotor.
Fig. 6 is a schematic view of the core frame forming a ring shape.
Fig. 7 is an assembly view of the stator unit, the rotor unit and the motor shaft.
Fig. 8 is a schematic view of the upper housing of fig. 7.
FIG. 9 is a schematic view of a cooling ring duct unit.
FIG. 10 is a schematic view of the cooling ring duct unit assembled with the stator unit and the casing.
Detailed Description
In order to make the disclosure of the present invention more comprehensible, the following description is further made in conjunction with the accompanying drawings 1 to 10 and the detailed description.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, 2 and 3, the horseshoe stator winding of the horseshoe winding permanent magnet motor utilizes the principle that the magnetic field at one end of the U-shaped winding is N, and the magnetic field at the other end is necessarily S-pole, and the principle is fully utilized, and two ends of the N-S-pole are simultaneously placed in the air gap magnetic field. Therefore, the motor forms an axial magnetic flux shunt and a radial magnetic flux shunt, the action of a magnetic field is greatly utilized, a conventional motor stator yoke is omitted, and the torque density and the power density of the permanent magnet motor are increased.
Referring to fig. 4 and 5, two adjacent windings of the stator are energized at a certain time to form N-S/N-S stator magnetic poles, and the two pairs of N-S/N-S magnetic poles are corresponding to the adjacent magnetic steels N-S/N-S on the rotor.
The N horseshoe stator cores are fixed on the core frame, each horseshoe stator core is an independent unit and is fixed on the core frame, the frame is made of magnetic conductive materials and has a magnetism gathering effect, a magnetic circuit cannot be short-circuited between N-S of each frame, and the frames need to be separated, as shown in fig. 2, 3 and 6.
It should be noted that if 18 horseshoe-shaped stator cores are adopted, the rotor is formed by splicing 16-pole magnetic steel to form an 18U/16P-type permanent magnet motor model; the utility model is not limited to 18U/16P; the slot pole matching number of the conventional three-phase permanent magnet motor can be any, such as: 9U/8P; 12U/10P; 36U/24P; 36U/32P, etc., not repeated; meanwhile, the utility model does not limit three phases and is also suitable for permanent magnet motors with five phases, six phases and nine phases. For convenience of explanation only, the 18U/16P structure is adopted to illustrate the content of the specific utility model.
Example 1
As shown in fig. 7 and 8, in example 1, 18 horseshoe-shaped stator cores and a rotor are spliced by 16-pole magnet steel to form an 18U/16P-type permanent magnet motor model, which is described in detail.
A permanent magnet motor with a horseshoe-shaped winding comprises a stator unit and a rotor unit, wherein the rotor unit is arranged in the stator unit, and a motor shaft 14 is connected with the rotor unit.
The stator unit is an annular stator formed by encircling a plurality of horseshoe-shaped stators 1, openings of all the horseshoe-shaped stators 1 face inwards, the horseshoe-shaped stators 1 are formed by laminating silicon steel sheets, stator windings 2 are wound on two legs of the horseshoe-shaped stators 1 to form horseshoe-shaped stator cores, and a magnetic field at one end of a U-shaped winding of each horseshoe-shaped stator core is defined as an N pole, and a magnetic field at the other end of the U-shaped winding of each horseshoe-shaped stator core is defined as an S pole; an iron core frame 3 is fixed at the end part of each leg of the horseshoe-shaped stator iron core, and a gap is reserved between the two iron core frames 3 on each horseshoe-shaped stator iron core; gaps are reserved between every two adjacent iron core frames 3 on every two adjacent horseshoe-shaped stator iron cores forming the annular stator, and the N poles and the S poles of every two adjacent horseshoe-shaped stator iron cores forming the annular stator are alternately arranged.
The casing 4 suit is in the periphery of stator unit, adopts epoxy vacuum casting with stator unit and casing 4 to solidification moulding makes stator core, winding and casing become an integral stator assembly.
In embodiment 1, the core frame 3 is a square plate, and holes into which the legs of the horseshoe stator core are inserted are formed in the square plate. The iron core frame 3 is made of a magnetic conductive material, and is a No. 45 steel plate, a Q235 steel plate or a Q195 steel plate. Because each horseshoe stator core is an independent unit, the horseshoe stator cores are fixed on the core frames, the core frames are made of magnetic conductive materials and have a magnetism gathering effect, and a magnetic circuit cannot be short-circuited between N-S of each core frame and needs to be separated, a gap is reserved between every two adjacent core frames.
In embodiment 1, 18 horseshoe stator cores and the magnetic gathering plate frame are independent, and through a tool (the tool is a cylinder matched with the inner diameter of the stator assembly, the 18 horseshoe stator cores and the magnetic gathering plate frame are installed and positioned around the cylinder to form a circumferential stator assembly, the motor shell 4 is fixed on the periphery of the stator core, the stator and the shell are vacuum-cast by epoxy resin with high heat conductivity and high insulating property and are cured and molded, so that the horseshoe stator core, the winding and the shell are integrated, and the stator assembly needs to be cast and cured in an inner cavity.
The epoxy resin with high thermal conductivity and high insulating property is a purchased part, and in this embodiment, a two-component epoxy potting compound of Elantas 5262 produced and sold by einlaus, germany is preferably adopted to integrate the horseshoe stator core, the winding and the housing into a whole to form the stator assembly.
As shown in fig. 7, the rotor unit includes a rotor yoke 5 and a plurality of magnets 6 adhered to the surface of the rotor yoke 5, the magnets 6 are arranged in two rings corresponding to the ring stator, and the magnets 6 on the same circumference are arranged alternately with N poles and S poles; and gaps are reserved between adjacent magnets 6 on the same circumference, and the number of the magnets 6 and the number of the U-shaped windings are set according to the slot pole matching number of any conventional permanent magnet motor. The motor shaft 14 is connected to the rotor yoke 5.
The magnet 6 is adhered to the surface of the rotor yoke part 5 by adopting magnetic steel glue. The magnetic steel glue is a purchased part, and preferably adopts the loctite 326.
Example 2
In the embodiment 2, a cooling annular pipeline for heat dissipation and temperature reduction of a stator core of a given artificial horseshoe type is additionally arranged on the basis of the embodiment 1.
The traditional liquid cooling motor adopts a shell water cooling or spiral water channel coil pipe (copper pipe) mode, but water leakage (cooling liquid) is caused due to the possible defects of actual casting and welding, so that the reliability of the motor is reduced and the motor is even burnt. The common water-cooled motor adopts steel part welding or gravity casting, the welding seam is easy to leak under the action of large hydraulic pressure and is difficult to repair, and the requirement on the welding process is very high
The conventional liquid cooling motor that uses, in order to let liquid have better taking away the heat, whole liquid cooling system needs the pressurization, accelerates the liquid circulation. Therefore, the leakage problem of the original cooling water channel is more prominent.
And the copper pipe is bent to form a coil pipe type, so that the leakage problem can be completely avoided. In addition, the pressure resistance of the copper pipe is better.
As shown in fig. 9 and 10, the horseshoe-shaped winding permanent magnet motor includes a stator unit, a rotor unit, and a cooling annular duct unit, wherein the rotor unit is installed in the stator unit, the cooling annular duct unit is embedded in the stator unit, and a motor shaft is connected with the rotor unit.
The cooling annular pipeline unit comprises four layers of annular pipelines which are sequentially sleeved, namely a first layer annular pipeline 7, a second layer rectangular wavy annular pipeline 8, a third layer annular pipeline 9 and a fourth layer rectangular wavy annular pipeline 10, wherein the four layers of annular pipelines are shaped and communicated through a radial communicating pipe 11, and an inlet 12 and an outlet 13 are connected to the communicating pipe 11.
As shown in fig. 10, the first layer of annular duct 7 and the third layer of annular duct 9 are located in an opening of the horseshoe stator 1, the second layer of rectangular wavy annular duct 8 and the fourth layer of rectangular wavy annular duct 10 are sleeved on the horseshoe stator core, and each rectangular wave in the second layer of rectangular wavy annular duct 8 and the fourth layer of rectangular wavy annular duct 10 is arranged corresponding to each horseshoe stator core respectively for cooling the horseshoe stator core.
The first layer of annular pipeline 7 and the third layer of annular pipeline 9 are in an annular shape formed by surrounding copper pipes, and the second layer of rectangular wave-shaped annular pipeline 8 and the fourth layer of rectangular wave-shaped annular pipeline 10 are formed by bending the copper pipes according to rectangular waves and are in an annular shape.
In embodiment 2, the gap between the stator unit, the cooling annular pipe unit and the housing 4 is filled with epoxy resin, and the stator unit, the cooling annular pipe unit and the housing 4 are cured into an integral stator assembly by vacuum casting and curing molding of the epoxy resin.
The epoxy resin is an epoxy resin with high thermal conductivity and high insulating property, and is a commercially available component, in this embodiment, a two-component epoxy potting compound of Elantas 5262, which is produced and sold by eines, germany, is preferably used to cure the stator unit, the cooling ring duct unit and the housing 4 into an integral stator assembly.
The cooling annular pipeline unit in the embodiment 2 is encapsulated in the stator unit, and a shell water-cooling machine shell of the water-cooling type motor in the prior art is omitted.
When the motor of embodiment 2 is implemented, cooling liquid is introduced from the inlet to be cooled, and the cooling liquid absorbing heat is discharged from the outlet.
The utility model discloses the part that does not relate to all communicates with each other with prior art or adopts prior art to realize.
Where not otherwise indicated herein, it will be appreciated that the invention is not limited to or by the prior art, but is capable of modifications and variations as will be apparent to those skilled in the art, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (5)
1. The utility model provides a horse shoe type winding permanent-magnet machine, includes stator unit and rotor unit, its characterized in that: the cooling device also comprises a cooling annular pipeline unit, wherein the rotor unit is arranged in the stator unit, the cooling annular pipeline unit is encapsulated in the stator unit, and a motor shaft (14) is connected with the rotor unit;
the stator unit is an annular stator formed by encircling a plurality of horseshoe-shaped stators (1), openings of all the horseshoe-shaped stators (1) face inwards, the horseshoe-shaped stators (1) are formed by overlapping silicon steel sheets, stator windings (2) are wound on two legs of the horseshoe-shaped stators (1) to form a horseshoe-shaped stator core, and a magnetic field at one end of a U-shaped winding defining the horseshoe-shaped stator core is an N pole, and a magnetic field at the other end of the U-shaped winding defines an S pole; an iron core frame (3) is fixed at the end part of each leg of the horseshoe-shaped stator iron core, and a gap is reserved between the two iron core frames (3) on each horseshoe-shaped stator iron core; gaps are reserved between every two adjacent iron core frames (3) on every two adjacent horseshoe-shaped stator iron cores forming the annular stator, and the N poles and the S poles of every two adjacent horseshoe-shaped stator iron cores forming the annular stator are alternately arranged;
the cooling annular pipeline unit comprises four layers of annular pipelines which are sequentially sleeved, namely a first layer of annular pipeline (7), a second layer of rectangular wavy annular pipeline (8), a third layer of annular pipeline (9) and a fourth layer of rectangular wavy annular pipeline (10), wherein the four layers of annular pipelines are shaped and communicated through radial communicating pipes (11), and an inlet (12) and an outlet (13) are connected to the communicating pipes (11);
the first layer of annular pipeline (7) and the third layer of annular pipeline (9) are positioned in an opening of the horseshoe stator (1), the second layer of rectangular wavy annular pipeline (8) and the fourth layer of rectangular wavy annular pipeline (10) are sleeved on the horseshoe stator iron core, and each rectangular wave in the second layer of rectangular wavy annular pipeline (8) and the fourth layer of rectangular wavy annular pipeline (10) respectively corresponds to each horseshoe stator iron core and is used for dissipating heat and cooling the horseshoe stator iron core;
the shell (4) is sleeved on the periphery of the stator unit, epoxy resin is filled in gaps among the stator unit, the cooling annular pipeline unit and the shell (4), the epoxy resin is adopted for vacuum casting and solidification forming, and the stator unit, the cooling annular pipeline unit and the shell (4) are solidified into an integral stator assembly;
the rotor unit comprises a rotor yoke part (5) and a plurality of magnets (6) adhered to the outer surface of the rotor yoke part (5), the magnets (6) are arranged in two rings corresponding to the ring-shaped stator, and the magnets (6) positioned on the same circumference are alternately arranged in an N pole and an S pole; gaps are reserved between adjacent magnets (6) on the same circumference, and the number of the magnets (6) and the number of the U-shaped windings are set according to the slot pole matching number of any conventional permanent magnet motor;
the motor shaft (14) is connected with the rotor yoke part (5).
2. The horseshoe-type winding permanent magnet machine of claim 1, characterized in that: the iron core frame (3) is a square plate, and holes for inserting legs of the horseshoe-shaped stator iron core are formed in the square plate.
3. The horseshoe-type winding permanent magnet machine of claim 2, characterized in that: the iron core frame (3) is made of a magnetic conductive material, and is a No. 45 steel plate, a Q235 steel plate or a Q195 steel plate.
4. The horseshoe-type winding permanent magnet machine of claim 1, characterized in that: the magnet (6) is adhered to the surface of the rotor yoke part (5) by adopting magnetic steel glue.
5. The horseshoe-type winding permanent magnet machine of claim 1, characterized in that: the first layer of annular pipeline (7) and the third layer of annular pipeline (9) are in an annular shape surrounded by copper pipes, and the second layer of rectangular wave-shaped annular pipeline (8) and the fourth layer of rectangular wave-shaped annular pipeline (10) are made of copper pipes through bending according to rectangular waves and are surrounded into an annular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921622554.XU CN210518074U (en) | 2019-09-27 | 2019-09-27 | Permanent magnet motor with horseshoe-shaped winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921622554.XU CN210518074U (en) | 2019-09-27 | 2019-09-27 | Permanent magnet motor with horseshoe-shaped winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210518074U true CN210518074U (en) | 2020-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921622554.XU Active CN210518074U (en) | 2019-09-27 | 2019-09-27 | Permanent magnet motor with horseshoe-shaped winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210518074U (en) |
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2019
- 2019-09-27 CN CN201921622554.XU patent/CN210518074U/en active Active
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