CN111030401A - Disc type full-superconducting motor - Google Patents
Disc type full-superconducting motor Download PDFInfo
- Publication number
- CN111030401A CN111030401A CN201911312708.XA CN201911312708A CN111030401A CN 111030401 A CN111030401 A CN 111030401A CN 201911312708 A CN201911312708 A CN 201911312708A CN 111030401 A CN111030401 A CN 111030401A
- Authority
- CN
- China
- Prior art keywords
- stator
- rotor
- cooling
- winding
- centralized
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001816 cooling Methods 0.000 claims abstract description 66
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000004804 winding Methods 0.000 claims abstract description 52
- BTGZYWWSOPEHMM-UHFFFAOYSA-N [O].[Cu].[Y].[Ba] Chemical compound [O].[Cu].[Y].[Ba] BTGZYWWSOPEHMM-UHFFFAOYSA-N 0.000 claims abstract description 49
- 230000005284 excitation Effects 0.000 claims abstract description 36
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 229910021521 yttrium barium copper oxide Inorganic materials 0.000 claims description 64
- 239000000463 material Substances 0.000 claims description 31
- 239000000110 cooling liquid Substances 0.000 claims description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 239000001307 helium Substances 0.000 claims description 5
- 229910052734 helium Inorganic materials 0.000 claims description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 5
- 230000005389 magnetism Effects 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 8
- 239000002887 superconductor Substances 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 4
- 230000005415 magnetization Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000013590 bulk material Substances 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 7
- 239000002826 coolant Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 229910002480 Cu-O Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 241000826860 Trapezium Species 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- IQAKAOAPBMJSGJ-UHFFFAOYSA-N [Cu].[Y].[Ba] Chemical compound [Cu].[Y].[Ba] IQAKAOAPBMJSGJ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2793—Rotors axially facing stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superconductive Dynamoelectric Machines (AREA)
Abstract
The utility model provides a full superconducting motor of disk, be equipped with a set of rotor, the rotor adopts non-radial magnetization structure, two rotor magnetization directions that correspond the setting are different, the magnetic pole is opposite, be equipped with first stator locating plate, first stator cooling path between two rotors in proper order, the centralized runway winding of stator, second stator cooling path and second stator locating plate, be provided with the excitation core array between the centralized runway winding of stator and the second stator cooling path, the structure of the centralized runway winding of stator corresponds the cooperation setting with the structure of excitation core array. During the use, cancelled the design of stator yoke, can be so that stator magnetic field along the axial no rotatory change, the attached superconductor yttrium barium copper oxygen piece in rotor surface simultaneously, directly cools off through the liquid nitrogen of laying in the water course, and the centralized runway winding of stator is formed by superconductive yttrium barium copper oxygen strip around the package, reduces the iron core loss by a wide margin, promotes motor efficiency and output.
Description
Technical Field
The invention mainly relates to the technical field of disc type motors, in particular to a disc type full superconducting motor, and particularly relates to a disc type stator and rotor full superconducting motor.
Background
At present, the design of a mainstream driving motor is developed towards the trend of high density, the power density is also increased year by year, and a drum type motor with higher power density is more and more difficult to meet the development requirement of high density.
The magnetic circuit structure of the traditional permanent magnet disc type motor is as follows: the magnetic induction line is emitted from N-pole magnetic steel of the surface-mounted rotor, penetrates through a stator excitation iron core through an air gap, the magnetic circuit rotates at a stator yoke part, and returns to the S pole of the adjacent magnetic steel of the rotor after passing through the air gap through the excitation iron core of the adjacent stator tooth part after being turned over.
The conventional superconducting motors are all in a conventional barrel type configuration, the configuration of the superconducting motor is far from the development trend of the motor, and the power density and the torque density of the superconducting motor are often difficult to be improved due to the low density of a system of the superconducting motor.
Disclosure of Invention
Aiming at the problems, the invention provides a disc type full-superconducting motor, which eliminates the design of a yoke part of a stator excitation iron core, can ensure that the magnetic field of a stator has no rotation change along the axial direction and is more uniform, and meanwhile, yttrium barium copper oxide blocks with different heights are pasted on the surface of a rotor, so that the air gap flux density is greatly improved compared with that of the traditional magnetizing method, and the efficiency and the output of the motor are improved.
The purpose of the invention can be realized by the following technical scheme: a disc type full superconducting motor comprises a shell and is characterized in that a group of correspondingly arranged rotors are arranged in the shell, the rotors adopt a non-radial magnetizing structure, the magnetizing directions of the two correspondingly arranged rotors are different, the magnetic poles of the two correspondingly arranged rotors are opposite, a first stator positioning plate, a first stator cooling passage, a stator centralized runway winding, a second stator cooling passage and a second stator positioning plate are sequentially arranged between the two rotors, an exciting iron core array is arranged between the stator centralized runway winding and the second stator cooling passage, the structure of the stator centralized runway winding is correspondingly matched with the structure of the exciting iron core array, the structure of the stator centralized winding and the structure of the exciting iron core array are fixed through the first stator positioning plate and the second stator positioning plate, and the arrangement positions of the first stator cooling passage and the second stator cooling passage correspond to the positions of the stator centralized winding and the two rotors, and cooling the material of the rotor and stator centralized runway winding.
Preferably, the excitation iron core array comprises a plurality of excitation iron cores which are uniformly distributed along the circumference, two side edges of each excitation iron core are respectively provided with a winding arrangement groove, the stator centralized runway windings are wound on the excitation iron cores one by one, the excitation iron cores adopt the structural shapes of stator pole shoes, the thickness of the stator pole shoes is 4-12mm, and gaps are formed between the adjacent stator pole shoes.
Furthermore, the surface of the rotor is coated with a plurality of yttrium barium copper oxide blocks, the rotor is provided with a plurality of water channels which are uniformly distributed along the radius of the rotor, and the positions of the water channels correspond to the positions of the yttrium barium copper oxide blocks.
Furthermore, the yttrium barium copper oxide blocks are cylindrical, the diameter of each yttrium barium copper oxide block is 8-25mm, the adjacent yttrium barium copper oxide blocks are different in height and are divided into three highest, middle and lowest yttrium barium copper oxide blocks according to the height, the highest four yttrium barium copper oxide blocks are used as magnetic steel, the magnetizing direction is vertical upwards or downwards, the middle and lowest yttrium barium copper oxide blocks are distributed on two sides of the highest yttrium barium copper oxide block to play a role in magnetizing, the magnetizing direction deviates from a value of 45-60 degrees, and the magnetizing directions of the middle and lowest yttrium barium copper oxide blocks are opposite.
Compared with the prior art, the technical scheme of the invention comprises the improvement of a plurality of details besides the improvement of the whole technical scheme, and particularly has the following beneficial effects:
1. the improved scheme of the invention describes that a group of rotors adopts a non-radial magnetizing structure, the magnetizing directions of the two correspondingly arranged rotors are different, the magnetic poles are opposite, and the indexes such as power density, torque density and the like are obviously improved compared with a cylindrical motor;
2. in the technical scheme of the invention, the excitation iron core array comprises a plurality of stator pole shoes which are uniformly distributed along the circumference, so that the magnetic field generated by the stator is more uniform, and meanwhile, the design of a stator magnetic yoke is cancelled, so that the magnetic field of the stator does not have rotation change along the axial direction;
3. the surface of the rotor is attached with the superconductor yttrium barium copper oxide blocks, the superconductor yttrium barium copper oxide blocks are directly cooled by liquid nitrogen distributed in a water channel, and the stator centralized runway winding is formed by wrapping the superconductor yttrium barium copper oxide strips, so that the loss of an iron core is greatly reduced, and the efficiency and the output of a motor are improved;
4. the invention is provided with a rotor cooling water channel and a stator cooling passage structure, so that superconductor yttrium barium copper oxide blocks on a rotor and a runway type coil on a stator are reduced to be below critical temperature, the superconducting characteristic is shown, the loss is further reduced, and the power density of a motor is improved;
5. the invention has reasonable structure, high efficiency and convenient implementation and popularization.
Drawings
Fig. 1 is an exploded view of the motor of the present invention.
Fig. 2 is a schematic structural diagram of the stator and rotor of the present invention.
Fig. 3 is a schematic view of a single field core structure of the present invention.
Fig. 4 is a schematic structural diagram of the field core array of the present invention.
Fig. 5 is a schematic structural diagram of a stator cooling passage according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a concentrated stator racetrack winding according to an embodiment of the present invention.
Fig. 7 is a schematic structural view of a first stator positioning plate in an embodiment of the present invention.
Fig. 8 is a schematic structural view of a second stator positioning plate according to an embodiment of the invention.
Fig. 9 is a schematic view of a connection structure between the stator concentrated type racetrack winding, the field core array and the stator positioning plate according to the embodiment of the invention.
Fig. 10 is a schematic view of a connection structure between the stator concentrated type racetrack winding, the field core array, the stator positioning plate and the stator cooling passage according to the embodiment of the invention.
Fig. 11 is an exploded view of the inner and outer casings of the rotor back iron in the embodiment of the present invention.
Fig. 12 is a schematic view of a rotor structure according to the present invention.
Fig. 13 is a schematic view of a rotor slant pole structure in the embodiment of the invention.
Fig. 14 is a schematic structural view of two rotors with different magnetizing directions in the embodiment of the present invention.
The labels in the figure are as follows:
the stator comprises a rotor 1, a first stator positioning plate 2, a first stator cooling passage 3, a concentrated stator runway winding 4, an excitation iron core array 5, a second stator cooling passage 6 and a second stator positioning plate 7;
11 yttrium barium copper oxide blocks and 12 water channels;
21 circular clamping grooves;
a 51 exciting core, a 52 winding arrangement groove, a 53 upper end part and a 54 lower end part;
71 cylindrical positioning post.
Detailed Description
The following detailed description of the embodiments of the present invention will be given in conjunction with the accompanying drawings to make it clear to those skilled in the art how to practice the present invention. While the invention has been described in connection with preferred embodiments thereof, these embodiments are merely illustrative, and not restrictive, of the scope of the invention.
The invention relates to a disc type full superconducting motor, which is shown in figure 1 and comprises a shell, wherein the shell is different from the prior art in that a group of correspondingly arranged rotors 1 are arranged in the shell, the rotors adopt a non-radial magnetizing structure, the magnetizing directions of the two correspondingly arranged rotors are different, the magnetic poles of the two correspondingly arranged rotors are opposite, a first stator positioning plate 2, a first stator cooling passage 3, a stator centralized runway winding 4, a second stator cooling passage 6 and a second stator positioning plate 7 are sequentially arranged between the two rotors, an exciting iron core array 5 is arranged between the stator centralized runway winding 4 and the second stator cooling passage, the structure of the stator centralized runway winding is correspondingly matched with the structure of the exciting iron core array, the structure of the stator centralized runway winding and the structure of the exciting iron core array are fixed through the first stator positioning plate and the second stator positioning plate, the first stator cooling passage and the second stator cooling passage are arranged at positions corresponding to the positions of the stator centralized runway winding and the, and cooling the material of the rotor and stator centralized runway winding. The cooling structure described here is a cooling structure in which the first and second cooling passages are formed together, and the first and second cooling passages are provided independently of each other and are not communicated with each other. The structure of the stator centralized type runway winding is correspondingly matched with the structure of the excitation iron core array, namely, a single runway winding structure formed by wrapping superconducting yttrium barium copper oxide strips is wound outside each excitation iron core.
Specifically, the invention eliminates the design of a yoke part of a stator excitation core, leads a magnetic induction line out of N-pole magnetic steel of a surface-mounted rotor, then reaches the stator excitation core through an air gap, directly passes through the inside of the stator excitation core, and reaches S-pole magnetic steel which is reversely magnetized by another rotor through the air gap. Because the design of a magnet yoke is cancelled, the rotor magnetic field has no change of a rotating magnetic field along the axial direction, so that the stator excitation iron core can select an oriented silicon steel material or an anisotropic high-permeability material to replace the traditional non-oriented silicon steel and has stronger saturation magnetic density.
Meanwhile, the magnetizing mode of the rotor surface-mounted yttrium barium copper oxide block materials with different heights is non-radial magnetizing, and a three-dimensional radial Halbach (Hellback array) array is adopted for magnetism gathering, so that the air gap magnetic density is greatly improved compared with that of the traditional magnetizing method. Meanwhile, a cooling loop is embedded in the back iron of the rotor, and cooling liquid is filled through the hollow shaft, so that the yttrium barium copper oxide block is cooled to be below the critical temperature to show superconductivity.
In one embodiment, the invention provides a design of a disk-type stator and rotor fully superconducting motor with a radial magnetic field, wherein the rotor adopts a non-radial magnetizing structure, a plurality of yttrium barium copper oxide blocks 11 are pasted on the surface of the rotor, a plurality of water channels 12 uniformly distributed along the radius of the rotor are arranged on the rotor, and the positions of the water channels correspond to the positions of the yttrium barium copper oxide blocks. The structure of the water channel inside and outside nesting is specifically shown in fig. 11, which is an inner sleeve arranged at the upper part and an outer sleeve of a surface-mounted yttrium barium copper oxide block material with different heights, wherein cooling liquid enters a rotor through a hollow shaft and then flows into a cooling liquid tank through a gap of the water channel. The cooling liquid is liquid nitrogen or liquid helium, wherein the cooling liquid does not need to flow out and only needs to be kept in a water path formed by an upper part and a lower part, and the filling degree of the cooling liquid in the cooling passage can be controlled by controlling the pressure in the cooling passage.
The design of the nested structure inside and outside the water channel ensures the space of a cooling liquid passage, and liquid nitrogen or liquid helium cooling liquid can smoothly flow in, so that the surface-mounted yttrium barium copper oxide block is reduced to below the critical temperature, and the superconducting characteristic is displayed. Among the stator structure, the structure of the centralized runway winding of stator sets up with the structure one-to-one cooperation of excitation core array, the excitation core array includes that a plurality of is followed circumference evenly distributed's a plurality of excitation core 51, every both sides limit of exciting core is equipped with the winding respectively and sets up groove 52, the centralized runway winding of stator is around locating on the excitation core one by one, the centralized runway winding of stator is formed around the package by superconductive yttrium barium copper oxygen strip, iron core body adopts oriented silicon steel material to make or adopts cobalt-based amorphous melt directly to pour and forms, can reduce the iron core loss by a wide margin like this, promote motor power density.
Specifically, the rotor back iron and the cooling channel thereof are formed in an internal and external nesting mode, and two parts of rotor materials needing nesting are made of low-temperature-resistant stainless steel materials. The complex water channel structure can be simply processed by a numerical control milling machine due to the inner and outer nesting mode, the surfaces of two original parts are simply finished, and meanwhile, the two parts are combined together inside and outside in an interference fit or bolt connection mode, so that a cooling passage is combined. Meanwhile, the groove structures are sequentially arranged according to the position of the yttrium barium copper oxide material pasted on the surface, so that cooling liquid can be smoothly stored in the groove structures, and the yttrium barium copper oxide block is ensured to be cooled below the critical temperature. When the cooling liquid is introduced, the cooling liquid port is controlled, so that the original air in the cooling liquid can be smoothly discharged, and the pressure of the cooling liquid cannot be influenced by the atmospheric pressure exceeding 1 bar. After the air is exhausted, the coolant pressure is controlled to control the degree of filling of the coolant in the rotor cooling circuit.
The Yt-Ba-Cu-O block structure with attached rotors has heat conducting glue adhered to the back iron of the rotors, and the rotors have different magnetizing directions, and the lower rotor has N pole corresponding to the upper rotor S pole to form closed magnetic circuit. The yttrium barium copper oxide block is cylindrical or cubic, the diameter of the yttrium barium copper oxide block is 8-25mm, the adjacent yttrium barium copper oxide blocks are different in height and are divided into three types of highest, middle and lowest yttrium barium copper oxide blocks according to the height, the highest four pieces of magnetic steel play a role of magnetic poles, the thickness of the magnetic steel is 4-10 mm, and the magnetizing direction is vertical or up or down; the yttrium barium copper oxide blocks with the middle height are distributed on two sides of the magnetic steel with the highest height, conform to the direction of a magnetic circuit generated by a rotor, and play a role in carrying out magnetism gathering on an air gap magnetic field, the thickness is 2-8 mm, and the magnetizing direction deviates from a value of 45-60 degrees; the yttrium barium copper oxide blocks with the smallest thickness are also distributed on two sides of the magnetic steel with the highest height, conform to the direction of a magnetic circuit generated by the rotor, and play a role in carrying out magnetism gathering on an air gap magnetic field, the thickness is 0.5-6 mm, the magnetizing direction is deviated from 45-60 degrees, and the magnetizing direction is opposite to the magnetizing direction of the yttrium barium copper oxide blocks with the middle height, and the specific reference is shown in fig. 14.
In another embodiment, considering that the outer diameter of the rotor back iron selected by the scheme is 180mm, the pole slots of the motor are matched with 4-pole 6-slot, and the pole slot matching of the motor meets the requirements of the number of rotor stages and the minimum common multiple of the number of stator slots (Max { LCM (number of rotor poles, number of stator slots) } is preferably larger. The outer diameter of the rotor can be designed according to different sizes, in the embodiment, the thickness of the rotor is 20mm, the width of an air gap is 1mm, and the measurement mode is the distance from the highest end faces of the N pole permanent magnet and the S pole permanent magnet of the rotor to a pole shoe of the stator, namely the width of the air gap. The thickness of the N-pole superconducting material and the S-pole superconducting material is 6mm (namely the thickness of the highest four pieces of magnetic steel), and the thickness of the corresponding magnetism-assisting superconducting material is 5mm and 4.5mm (namely the thickness of the two kinds of yttrium barium copper oxide blocks in the middle and the lowest). The larger the outer diameter of the rotor is, the thickness of the rotor, the length of the air gap and the thickness of the superconducting block material need to be adjusted correspondingly.
Particularly, the excitation iron core array comprises a plurality of excitation iron cores which are uniformly distributed along the circumference, two side edges of each excitation iron core are respectively provided with a winding setting groove, the stator centralized runway windings are wound on the excitation iron cores one by one, the excitation iron cores adopt the structural shapes of stator pole shoes, and gaps are arranged between the adjacent stator pole shoes. The centralized runway winding of stator is around and fixed through first, second stator locating plate between the excitation iron core array, form a whole, be equipped with bellied cylindrical reference column 71 on the second stator locating plate here, be equipped with on the first stator locating plate with reference column matched with circular slot 21, first, second stator locating plate is regular polygon, its appearance structure is identical with one side base of the trapezium structure of stator pole shoe, the height of reference column and the highly matched with of stator pole shoe for first, second stator locating plate can play the fixed action to the direction of height of excitation iron core array just.
The centralized runway winding of the stator is formed by wrapping superconducting yttrium barium copper oxide strips, copper brackets are added to the superconducting yttrium barium copper oxide strips during wrapping to support winding forming, and the notification brackets can be arc sections and can be mutually continuous or discontinuous. The stator pole shoe formed by stacking the oriented silicon steels along the vertical rolling surface follows the direction of a magnetic circuit, the middle iron core body and the upper end and the lower end which are arranged at the two ends of the iron core body are arranged on the stator pole shoe, the iron core body is formed by butt joint and splicing the bottom edges of the two trapezoidal parts, and the upper end and the lower end are in a trapezoidal structure. The upper end part and the lower end part are also in an isosceles trapezoid structure corresponding to the trapezoid part, and the area of the upper end part and the area of the lower end part are larger than the cross section area of the iron core body. The iron core body is made of oriented silicon steel materials or directly poured by cobalt-based amorphous solution, so that the iron core loss can be greatly reduced, and the power density of the motor is improved.
In yet another embodiment, the rotor is arranged in a slant pole structure, the YBCO blocks are in a segmented structure, the slant pole angle is in the range of 0.5-30 degrees, and the elimination rate of torque pulsation in the mode is verified to be 10-87.2%, see fig. 13 specifically. Because the oblique polar structure of disk motor is different with the cylinder motor, the same point is that two rows of magnet steel circumference are arranged and stagger certain angle, and the angle of staggering is oblique polar angle, and the maximum value is less than the angle between every piece of magnet steel of Hellback array (totally 12) that adopts 2 antipodal 3 groups of magnet steel, and oblique polar angle is bigger, and is stronger to the pulsed weakening ability of torque, nevertheless can reduce average output torque. The surface-mounted yttrium barium copper oxide block aims at replacing permanent magnet steel made of neodymium iron boron materials, the adopted form is rectangular or cylindrical, the application case is cylindrical, the magnetic steel blocks can reduce eddy current generated in the magnetic steel, and the generated eddy current is larger as the volume of the block permanent magnet is larger. The block structure can be used for applying the oblique pole technology, and can be used for effectively reducing the eddy current loss of the magnetic steel and further improving the density of the motor.
The first and second stator cooling passages have the same structure, and are arranged between adjacent field cores in a staggered manner, so that the inner side and the outer side of each field core correspond to the position of at least one stator cooling passage. The corresponding arrangement is that the cooling passage can generate an effective cooling effect on the stator centralized runway winding, so that the stator centralized runway winding wound on the excitation iron core can be reduced to be below a critical temperature under the action of the stator cooling passage, the superconducting characteristic is shown, the loss is further reduced, and the power density of the motor is improved.
Specifically, the first stator cooling channel and the second stator cooling channel are made of glass fibers or copper pipes, the first stator cooling channel and the second stator cooling channel are arranged independently, the inner portions of the first stator cooling channel and the second stator cooling channel are of hollow structures, liquid inlets are formed in the first stator cooling channel and the second stator cooling channel, cooling liquid is communicated with the first stator cooling channel and the second stator cooling channel, and the cooling liquid is liquid nitrogen or liquid helium. Furthermore, the cooling liquid can be smoothly stored in the pipeline structure to ensure that the temperature of the yttrium barium copper oxide strip is reduced to be below the critical temperature. When the cooling liquid is introduced, the cooling liquid port is controlled, so that the original air in the cooling liquid can be smoothly discharged, and the pressure of the cooling liquid cannot be influenced by the atmospheric pressure exceeding 1 bar. After the air is exhausted, the coolant pressure is controlled to control the degree of filling of the coolant in the stator cooling circuit.
In the stator structure, the distance between adjacent pole shoes is as follows: the distance is 3-10 mm near the edge, the distance is 8-20 mm far away from the edge, the pole shoe thickness is 4-12mm, wherein the positioning plate member is made of low temperature resistant resin material, and the shape of the sharp corner of the positioning plate member is attached to two short sides of the stator core so as to play a positioning role. The inclined angle theta of the stator bevel edge is 6-40 degrees, the thickness of the whole stator excitation iron core is 30-80 mm thick, and the specific thickness can be adjusted according to the pole slot matching and the outer diameter of the stator. For example, the thickness of the whole stator excitation iron core is 30-80 mm, and the specific thickness can be determined according to the distance between the pole slots and the pole slots matched with the middle slot and the two stator pole shoes. The number of slots can be used to indicate that the stator employs several winding and core assemblies, for example, six winding and core assemblies in this embodiment, that the number of slots is 6, the number of stator poles is 4, and there are 2 opposite poles.
In a specific embodiment, the stator has an outer diameter of 180mm, the pole shoe has a thickness of 5mm, the stator pole shoe includes a central core body and upper and lower end portions provided at two ends of the core body, the core body is formed by butt-joining and splicing the bottom edges of two trapezoidal portions, so that the core body has three widths, respectively 16mm, 47mm and 24mm, wherein 47mm is the width of the bottom edge, respectively the butt-joint of the two trapezoidal portions, and 16mm and 24mm are the lengths of the top edges of the two trapezoidal portions, respectively, as shown in fig. 3 in detail. The width of the air gap is 1mm, and the measurement mode is the distance from the highest end faces of the permanent magnets of the N pole and the S pole of the rotor to the pole shoe of the stator. The width of the runway type superconducting strip is 30mm, a centralized winding is adopted, the number of turns is 120 turns, the maximum expansion and contraction length rate of the runway type winding of the topological structure is not more than 0.2% due to the brittleness of the superconducting strip, a disconnected copper support can be adopted for supporting the inside of the runway type winding, and the runway type superconducting strip is unsupported in the implementation case. The excitation core of the stator is made of low-temperature-resistant oriented silicon steel material with an inorganic coating, the thicknesses of N-pole superconducting materials and S-pole superconducting materials are 6mm, and the thicknesses of corresponding magnetism-assisting superconducting materials are 5mm and 4.5 mm. The larger the outer diameter of the rotor is, the thickness of the rotor, the length of the air gap and the thickness of the superconducting block material need to be adjusted correspondingly.
The rotor surface pasting material is an yttrium barium copper oxide block, heat-conducting glue is adopted for pasting, the thickness is 0.5-10 mm, the critical temperature is above 77K, the temperature is far lower than the boiling point of liquid nitrogen, and liquid nitrogen cooling liquid or liquid helium cooling liquid with better cooling effect can be used for cooling. As the YBCO block is a superconducting material with extremely high brittleness, the elongation of the YBCO block is required to be less than 0.2%, so that the topological structure of the YBCO block is cylindrical, the uniformity of the magnetic density can be ensured, and the brittleness of the YBCO material can be conformed. The YBCO bulk material is cylindrical, the diameter and the length of the YBCO bulk material are determined according to the size of a rotor back iron, and the diameter and the length of the YBCO bulk material are within the range of 8-25mm, if the diameter and the length of the YBCO bulk material are too large, too high rotational inertia and a flat motor structure are generated. The length of the air gap of the motor is 0.5-4 mm, and the calculation mode is the length from the upper end face of the yttrium barium copper oxide block with the highest thickness to the end face of the stator excitation iron core.
The stator water channel part adopts an unconnected form, the upper part and the lower part are respectively clung to the lower end surface of the stator pole shoe part and are distributed up and down, and each coil can be fully cooled in a surrounding way in the integral view. The pipeline structure adopts a low-temperature-resistant glass fiber structure, so that the operating temperature of the stator runway coil is reduced to be below the critical temperature, and the coil generates superconductivity. The rotor water channel is a central divergence, a complex structure is formed by simple operation of the numerical control milling machine, and the water channel is formed in an internally-externally nested mode. In this embodiment, the inner and outer nesting forms are assembled in a tolerance fit manner, and other corresponding special matching modes such as screw fastening connection are also possible. According to the motor, the larger the minimum common multiple of the rotor stator pole slot matching is, the better the suppression effect on torque pulsation is.
The rotor hollow shaft transmits through a threaded hole in the rotor disc, and the rotor disc drives the rotor space shaft to rotate so as to transmit mechanical energy generated by the rotor. The rotor adopts non-radial magnetization, and the rotor is totally provided with 12 integral multiples of block-shaped yttrium barium copper oxide materials, and has a common quadrupole structure. The magnetizing directions of the four yttrium barium copper block materials in the directions perpendicular to each other are vertical upward or downward, the magnetizing directions of two adjacent yttrium barium copper oxide materials are distributed along the magnetic line of force in the magnetizing direction, the magnetizing directions of the two rotors are different, and the magnetic poles are opposite, which is shown in fig. 14 specifically.
Further, the upper and lower rotors should be manufactured without magnetism. And magnetizing the rotor by a non-radial magnetizing large-current capacitive magnetizing machine. At the moment, liquid nitrogen cooling liquid is introduced into the rotor back iron through the inside of the hollow shaft, and the filling degree of the cooling liquid passage inside the rotor is controlled by controlling the internal pressure of the cooling liquid of the through opening. At the moment, the yttrium barium copper oxide bulk material pasted with the surface heat transfer adhesive shows superconducting property due to the cooling of the liquid nitrogen, and a closed magnetic field generated by the magnetizing current is sealed inside the bulk material by the superconducting material due to the complete diamagnetism of the superconducting material, so that the bulk material can be equivalent to a permanent magnet structure with ultrahigh magnetic energy product.
It should be noted that many variations and modifications of the embodiments of the present invention fully described are possible and are not to be considered as limited to the specific examples of the above embodiments. The above examples are given by way of illustration of the invention and are not intended to limit the invention. In conclusion, the scope of the present invention shall include those alterations or substitutions and modifications which are obvious to those of ordinary skill in the art, and shall be subject to the appended claims.
Claims (10)
1. A disc type full superconducting motor comprises a shell and is characterized in that a group of correspondingly arranged rotors are arranged in the shell, the rotors adopt a non-radial magnetizing structure, the magnetizing directions of the two correspondingly arranged rotors are different, the magnetic poles of the two correspondingly arranged rotors are opposite, a first stator positioning plate, a first stator cooling passage, a stator centralized runway winding, a second stator cooling passage and a second stator positioning plate are sequentially arranged between the two rotors, an exciting iron core array is arranged between the stator centralized runway winding and the second stator cooling passage, the structure of the stator centralized runway winding is correspondingly matched with the structure of the exciting iron core array, the structure of the stator centralized winding and the structure of the exciting iron core array are fixed through the first stator positioning plate and the second stator positioning plate, and the arrangement positions of the first stator cooling passage and the second stator cooling passage correspond to the positions of the stator centralized winding and the two rotors, and cooling the material of the rotor and stator centralized runway winding.
2. The disc type full superconducting motor according to claim 1, wherein the field core array comprises a plurality of field cores uniformly distributed along a circumference, winding arrangement grooves are respectively formed in two side edges of each field core, stator centralized type runway windings are wound on the field cores one by one, the field cores adopt the structural shape of stator pole shoes, the thickness of the stator pole shoes is 4-12mm, and gaps are formed between adjacent stator pole shoes.
3. The disc type full superconducting motor according to claim 1, wherein the rotor has a non-radial magnetizing structure, a plurality of yttrium barium copper oxide blocks are attached to the surface of the rotor, a plurality of water channels are uniformly distributed along the radius of the rotor, and the positions of the water channels correspond to the positions of the yttrium barium copper oxide blocks.
4. The disc type full-superconducting motor according to claim 3, wherein the YBCO blocks are cylindrical, the diameter of the YBCO blocks is 8-25mm, the adjacent YBCO blocks have different heights and are divided into the highest, middle and lowest YBCO blocks according to the heights, the highest four YBCO blocks are used as magnetic steel, the magnetizing direction is vertically upward or downward, the middle and lowest YBCO blocks are distributed on two sides of the highest YBCO block to play a role of magnetism gathering, the magnetizing direction deviates from a value of 45-60 degrees, and the magnetizing directions of the middle and lowest YBCO blocks are opposite.
5. The disc type full superconducting motor according to claim 3, wherein the rotor is arranged in a skewed pole structure, the YBCO block is in a segmented structure, and the angle of the skewed pole is in the range of 0.5-30 degrees.
6. The disc type full superconducting motor according to claim 2, wherein the second stator positioning plate is provided with a raised cylindrical positioning column, the first stator positioning plate is provided with a circular slot matched with the positioning column, the first and second stator positioning plates are in a regular polygon shape, the shape of the first and second stator positioning plates is matched with the side structure of the excitation iron core, and the height of the positioning column is matched with the height of the excitation iron core.
7. The stator for a disk type fully superconducting motor and the cooling structure thereof according to claim 2, wherein the first and second stator cooling passages have the same structure, and the first and second stator cooling passages are alternately wound between the adjacent field cores so that the inner and outer sides of each field core correspond to the position of at least one stator cooling passage.
8. The stator for the disc-type full-superconducting motor and the cooling structure thereof according to claim 7, wherein the first and second stator cooling channels are made of glass fiber or copper tube, the first and second stator cooling channels are independently arranged and have a hollow structure inside, the first and second stator cooling channels are provided with liquid inlets, cooling liquid is introduced into the first and second stator cooling channels, and the cooling liquid is liquid nitrogen or liquid helium.
9. The stator for the disk-type full-superconducting motor and the cooling structure thereof as claimed in claim 2, wherein a plurality of pieces of oriented silicon steel are stacked along a vertical rolling direction, the formed stator pole shoe comprises a middle iron core body and upper and lower end portions arranged at two ends of the iron core body, the iron core body is formed by butt-jointing and splicing bottom edges of two trapezoidal portions, and the upper and lower end portions are in a trapezoidal structure.
10. The stator for the disk type full superconducting motor and the cooling structure thereof as claimed in claim 1, wherein the stator concentrated type racetrack winding is formed by wrapping superconducting yttrium barium copper oxide tapes, and copper brackets are added to the superconducting yttrium barium copper oxide tapes during wrapping for supporting winding formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911312708.XA CN111030401A (en) | 2019-12-18 | 2019-12-18 | Disc type full-superconducting motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911312708.XA CN111030401A (en) | 2019-12-18 | 2019-12-18 | Disc type full-superconducting motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111030401A true CN111030401A (en) | 2020-04-17 |
Family
ID=70210730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911312708.XA Pending CN111030401A (en) | 2019-12-18 | 2019-12-18 | Disc type full-superconducting motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111030401A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117471183A (en) * | 2023-12-27 | 2024-01-30 | 苏州英磁新能源科技有限公司 | Stator core loss measuring device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057551A (en) * | 1990-06-15 | 1992-01-01 | 通用电气公司 | The liquid cools of rotor |
| JP2006050743A (en) * | 2004-08-03 | 2006-02-16 | Nippon Densan Corp | Core member for motor, motor, and manufacturing method for armature |
| CN102969873A (en) * | 2012-11-16 | 2013-03-13 | 清华大学 | High-temperature superconducting motor |
| CN103904852A (en) * | 2014-04-17 | 2014-07-02 | 哈尔滨理工大学 | Novel permanent magnetic structure outer rotor disc type motor |
| CN104467327A (en) * | 2014-12-24 | 2015-03-25 | 江苏交科能源科技发展有限公司 | Permanent magnet segmented PWM array sine wave disc type motor |
| CN204334259U (en) * | 2014-11-14 | 2015-05-13 | 江西理工大学 | A kind of electric vehicle rotor segment is oblique pole formula double plate magneto oppositely |
| CN106817003A (en) * | 2016-11-11 | 2017-06-09 | 南方电机科技有限公司 | A kind of motor of high torque and the robot including the motor |
| CN108173362A (en) * | 2018-01-10 | 2018-06-15 | 上海硅泰电子有限公司 | Stator module and disc type electric machine without yoke portion stator core disc type electric machine |
| CN109904948A (en) * | 2018-07-17 | 2019-06-18 | 苏州保邦电气有限公司 | Winding water cooling microlight-type axial-flux electric machine |
| CN211530963U (en) * | 2019-12-18 | 2020-09-18 | 苏州英磁新能源科技有限公司 | Disc type full-superconducting motor |
-
2019
- 2019-12-18 CN CN201911312708.XA patent/CN111030401A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057551A (en) * | 1990-06-15 | 1992-01-01 | 通用电气公司 | The liquid cools of rotor |
| JP2006050743A (en) * | 2004-08-03 | 2006-02-16 | Nippon Densan Corp | Core member for motor, motor, and manufacturing method for armature |
| CN102969873A (en) * | 2012-11-16 | 2013-03-13 | 清华大学 | High-temperature superconducting motor |
| CN103904852A (en) * | 2014-04-17 | 2014-07-02 | 哈尔滨理工大学 | Novel permanent magnetic structure outer rotor disc type motor |
| CN204334259U (en) * | 2014-11-14 | 2015-05-13 | 江西理工大学 | A kind of electric vehicle rotor segment is oblique pole formula double plate magneto oppositely |
| CN104467327A (en) * | 2014-12-24 | 2015-03-25 | 江苏交科能源科技发展有限公司 | Permanent magnet segmented PWM array sine wave disc type motor |
| CN106817003A (en) * | 2016-11-11 | 2017-06-09 | 南方电机科技有限公司 | A kind of motor of high torque and the robot including the motor |
| CN108173362A (en) * | 2018-01-10 | 2018-06-15 | 上海硅泰电子有限公司 | Stator module and disc type electric machine without yoke portion stator core disc type electric machine |
| CN109904948A (en) * | 2018-07-17 | 2019-06-18 | 苏州保邦电气有限公司 | Winding water cooling microlight-type axial-flux electric machine |
| CN211530963U (en) * | 2019-12-18 | 2020-09-18 | 苏州英磁新能源科技有限公司 | Disc type full-superconducting motor |
Non-Patent Citations (1)
| Title |
|---|
| 闫杰: "盘式无铁心永磁同步电机磁场分析及磁钢结构优化", 中国优秀博硕士学位论文全文数据库（硕士） 工程科技Ⅱ辑, 15 June 2006 (2006-06-15), pages 47 - 51 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117471183A (en) * | 2023-12-27 | 2024-01-30 | 苏州英磁新能源科技有限公司 | Stator core loss measuring device |
| CN117471183B (en) * | 2023-12-27 | 2024-03-12 | 苏州英磁新能源科技有限公司 | Stator core loss measuring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5033552B2 (en) | Axial gap type coreless rotating machine | |
| CN1689211B (en) | Built-in type permanent magnet machine and rotor | |
| RU2479880C2 (en) | Assembly of superconductive coils and equipment for generation of magnetic field | |
| CN211530963U (en) | Disc type full-superconducting motor | |
| US8471660B2 (en) | Assembly for magnetization of rare-earth permanent magnets | |
| US10060682B2 (en) | Fluid-cooled wound strip structure | |
| CN108110980A (en) | Mid-series type has the adjustable flux electric machine of hybrid permanent magnet of passive adjustable magnetic magnetic barrier | |
| CN102664504A (en) | Polyphase permanent magnet motor with leakage reactance adjustable structure | |
| CN101371425A (en) | Square wave three-phase brushless permanent magnetic DC motor | |
| US20140101927A1 (en) | Method of manufacturing a transverse flux electrical machine rotor | |
| CN108050156A (en) | A kind of sextupole hybrid magnetic bearing | |
| CN103296792A (en) | Disc-type motor with amorphous ferrous alloy axial magnetic circuit and manufacturing method and stator assembly thereof | |
| CN203312944U (en) | Embedded-type permanent magnet motor | |
| CN111030401A (en) | Disc type full-superconducting motor | |
| CN102497081B (en) | Magnetic-field modulation-type cylinder-type transverse-flux linear motor | |
| JP6402739B2 (en) | Rotating electric machine | |
| CN112688522B (en) | High-power-density axial magnetic field permanent magnet motor structure | |
| CN211557124U (en) | Stator for disk type full superconducting motor and cooling structure thereof | |
| CN202435153U (en) | Disc type motor with amorphous iron alloy axial magnetic circuit and stator assembly of disc type motor | |
| WO2020073804A1 (en) | Directional silicon steel sheet axial magnetic field electric motor | |
| CN110994946A (en) | Stator for disk type full superconducting motor and cooling structure thereof | |
| CN107659005B (en) | Disc type superconducting motor | |
| CN112332570B (en) | Multipolar rotor of outer rotor low-speed synchronous reluctance motor | |
| CN115473401A (en) | Stator modularization magnetic field modulation motor with Halbach permanent magnet array | |
| US20220320980A1 (en) | Stator Assembly and Center Disk Spindle Double-Rotor Motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |