CN107659005B - Disc type superconducting motor - Google Patents
Disc type superconducting motor Download PDFInfo
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- CN107659005B CN107659005B CN201710919842.0A CN201710919842A CN107659005B CN 107659005 B CN107659005 B CN 107659005B CN 201710919842 A CN201710919842 A CN 201710919842A CN 107659005 B CN107659005 B CN 107659005B
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- 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
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- 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
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/02—Windings characterised by the conductor material
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- 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
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/12—Machines characterised by the bobbins for supporting the windings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superconductive Dynamoelectric Machines (AREA)
Abstract
The invention provides a disc-type superconducting motor, wherein a stator is arranged in a motor shell and comprises a stator iron core and a stator winding; a bracket is arranged in the motor shell, an iron core placing hole is formed in the bracket, a stator iron core is placed in the iron core placing hole, the stator iron core is a columnar iron core formed by superposing a plurality of vertically arranged oriented silicon steel sheets, the middle part of the stator iron core is a supporting and dividing part, superconducting coil winding parts are symmetrically arranged on the upper part and the lower part of the stator iron core respectively, and an oriented steel belt winds the superconducting coil winding parts of the stator iron core and forms a superconducting coil; the superconducting coil is in contact with the motor casing, a cooling channel is arranged in the motor casing, and the cooling channel is arranged around the iron core placing hole and is arranged corresponding to the superconducting coil. The cooling channel surrounds the superconducting coil to effectively cool the superconducting coil, and the superconducting coil with the bidirectional symmetrical windings greatly improves the power density of the motor in a limited volume under the condition that the size of the motor is unchanged.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a disc type superconducting motor, and specifically relates to a disc type motor provided with a superconducting coil.
Background
The disk motor is called a disk motor, and has the characteristics of small volume, light weight and high efficiency. The stator of a disc motor is typically placed on a flat base plate, with the rotor cooperating with the stator, which comprises coils, the rotor being a permanent magnet or a disc with permanent magnets attached.
The rotors of conventional disc motors are mostly surface mounted poles arranged in N/S/N/S. In order to improve the torque density and efficiency of the motor, the motor is mainly started from the aspects of optimizing a motor magnetic steel structure, motor optimization design, manufacturing process and equipment, a magnetic circuit structure, high-row electrical steel, high-performance permanent magnet materials and the like, however, due to the electromagnetic conversion principle of the disc motor and the limitation of the performance of the materials, higher torque density and efficiency cannot be realized, and a certain gap exists between the motor and the performance of the foreign disc motor.
Disclosure of Invention
The invention aims to provide a disc type superconducting motor, which improves the power density of the motor in a limited volume through structural improvement of the disc type motor, so that the motor obtains higher efficiency.
In order to achieve the above object, the technical scheme of the present invention is as follows: a disc superconducting motor, said motor comprising a rotor and a stator cooperating with the rotor, characterized in that: the stator is arranged in the motor shell and comprises a stator core and a stator winding; the motor is characterized in that a bracket is arranged in the motor shell, an iron core placing hole is formed in the bracket, a stator iron core is placed in the iron core placing hole, the stator iron core is a columnar iron core formed by superposing a plurality of vertically arranged oriented silicon steel sheets, the middle part of the stator iron core is a supporting and dividing part, superconducting coil winding parts are symmetrically arranged on the upper part and the lower part of the stator iron core respectively, and an oriented steel belt is wound on the superconducting coil winding parts of the stator iron core and forms superconducting coils; the superconducting coil is in contact with the motor casing, a cooling channel is arranged in the motor casing, and the cooling channel is arranged around the iron core placing hole and is arranged corresponding to the superconducting coil.
Preferably, the magnetic conduction direction of each piece of overlapped oriented silicon steel sheet is parallel to the axial direction of the iron core placing hole, and each piece of oriented silicon steel sheet is of a cross structure with a convex extending towards two sides in the middle and symmetrically arranged at the upper part and the lower part; the middle part of the columnar stator core is a square upright post, the upper part and the lower part are cylindrical upright posts, and symmetrical upright post planes are arranged on the outer side walls of the cylindrical upright posts.
Preferably, two groups of cooling channels are arranged in the bracket, the height positions of the two groups of cooling channels are matched with the winding positions of the two superconducting coils of the stator core, the side part of the motor shell is provided with a water inlet and a water outlet of the cooling channels, the cooling channels are sequentially wound along each superconducting coil, and a cooling medium in the cooling channels is liquid nitrogen.
Further, the iron core placing holes are uniformly distributed along the inner wall of the motor shell, the number of the iron core placing holes is 3N, and N is a natural number which is greater than or equal to 1.
Further, the middle parts of the oriented silicon steel sheets are the same in size, the upper and lower parts of the oriented silicon steel sheets at the middle parts are wider when a plurality of oriented silicon steel sheets are overlapped, and the upper and lower parts of the oriented silicon steel sheets at the two ends are narrower, so that the upper and lower parts of the iron core formed by overlapping and splicing the oriented silicon steel sheets form a runway-shaped stand column. A gap is arranged between the superconducting coils wound on two adjacent stator cores.
Furthermore, each group of cooling channels comprises two water channels, and the inner side and the outer side of each superconducting coil are respectively provided with a cooling channel water inlet end or a cooling channel water outlet end; two water channels enter the water inlet end of the cooling channel of one superconducting coil in parallel, then the two water channels are opposite to each other to surround the superconducting coil and then are converged at the water outlet end of the cooling channel, the two water channels after converging enter the water inlet end of the cooling channel of the next superconducting coil in parallel, and the like, so that a complete cooling channel loop is formed.
Compared with the prior art, the technical scheme of the invention comprises a plurality of improvements in detail besides the improvement of the whole technical scheme, and particularly has the following beneficial effects:
1. according to the improved scheme, the stator of the motor is improved, a plurality of iron core placing holes are formed in a motor shell, a stator iron core is made of oriented silicon steel laminations, superconducting coils are respectively wrapped at two ends of the stator iron core, the superconducting coils are closely attached to the motor shell, a cooling channel is arranged in the motor shell, and the superconducting coils can be effectively cooled by being surrounded by the cooling channel. Due to the arrangement of the superconducting coils of the bidirectional symmetrical windings, the power density of the motor is greatly improved in a limited volume under the condition that the size of the motor is unchanged;
2. the oriented silicon steel is adopted, the oriented silicon steel lamination with higher magnetic conductivity is used in the polarization direction of the rotor, and meanwhile, the oriented silicon steel lamination is also used in the stator pole shoe, so that the magnetic flux of the tooth part of the stator is still not fully saturated under the condition of larger current of the driving motor, the leakage reactance of the slots of the stator and the rotor is effectively reduced, larger torque is provided, and higher power density is output;
3. the invention can improve the magnetic field intensity of the generator to 5-6 ten thousand gauss by utilizing the superconducting coil magnet, and almost has no energy loss. The single generator power generation capacity of the superconducting coil is improved by 5-10 times compared with that of a conventional generator by 1 ten thousand megawatts, the volume is reduced by 1/2, the weight of the whole generator is reduced by 1/3, and the power generation efficiency is improved by 50%;
4. according to the technical scheme, the iron loss of the oriented steel strip in the rolling direction is only 1/3 of that of the transverse direction, and the magnetic permeability ratio is 6:1, the iron loss is about 1/2 of that of a hot rolled strip, the magnetic conductivity is 2.5 times of that of the hot rolled strip, the iron loss of a driving motor is reduced, and the induction driving motor obtains higher torque output by the ultrahigh magnetic induction of oriented silicon steel in the magnetization direction;
5. the oriented silicon steel sheets are of cross structures, materials are saved when the oriented steel strips are prepared, the rolling process is simpler, more convenient and feasible, the width of the oriented silicon steel sheets in the middle is wider when the oriented silicon steel sheets are overlapped, and the widths of the oriented silicon steel sheets at the two ends are narrower, so that racetrack-shaped stand columns are formed at the two ends of an iron core formed after splicing, the racetrack-shaped stand columns are beneficial to winding of superconducting coils, the magnetic loss is reduced, and the motor driving efficiency is improved;
6. because the two groups of superconducting coils are symmetrically wound on each iron core, two groups of corresponding cooling channels are arranged in the motor shell, each group of cooling channels is composed of two branch water channels, the branch water channels are used for converging the superconducting coils after wrapping, and then the superconducting coils are flowed to cool and wrap the next superconducting coils, so that the cooling channels are reasonable in distribution, small in occupied space, good in cooling effect, capable of rapidly cooling, and long-acting and stable.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic cross-sectional structure of a stator according to the present invention.
Fig. 3 is a schematic view of a partial structure of a cross section of a stator according to the present invention.
Fig. 4 is a schematic cross-sectional view of a stator according to the present invention.
Fig. 5 is a schematic diagram of the motor housing according to the present invention, with a portion of the housing removed, in cooperation with the cooling channel and superconducting coil.
Fig. 6 is a schematic structural view of the iron core of the present invention.
Fig. 7 is a schematic view of the structure of a punched sheet of the oriented silicon steel sheet of the present invention.
Fig. 8 is a cross-sectional view of the core of the present invention after winding superconducting coils to form magnetic steel.
Fig. 9 is a schematic diagram of the fit of the stator winding of the present invention with the cooling channels.
Fig. 10 is a schematic diagram of the combination of a superconducting coil and a stent of the present invention.
Fig. 11 is a schematic diagram of the general assembly structure of the present invention.
Fig. 12 is a sectional view of the assembled structure of the present invention.
Fig. 13 is a partial cross-sectional view of the assembled structure of the present invention.
Reference numerals:
1 motor shell, 2 iron core, 3 superconducting coil, 4 cooling channel, 7 cooling channel water inlet and outlet;
the upper part of the 2-1 oriented silicon steel sheet, the square magnetic permeability of the 2-2 oriented silicon steel sheet and the middle part of the 2-3 oriented silicon steel sheet;
1. the motor comprises a motor shell, a 2 iron core, a 3 superconducting coil, a 4 cooling channel (up and down), a 5 motor shaft, a 6 motor bearing, a water inlet and outlet (up and down) of a 7 cooling channel, an 8 motor three-phase wire connector and a 9 iron core fixing pressing plate;
the upper part of the 2-1 oriented silicon steel sheet, the square magnetic permeability of the 2-2 oriented silicon steel sheet and the middle part of the 2-3 oriented silicon steel sheet.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The invention provides a disc superconducting motor, referring to fig. 1, the motor comprises a rotor and a stator matched with the rotor, and the difference between the motor and the prior art is that: the stator is arranged in the motor shell and comprises a stator core and a stator winding; the motor casing is internally provided with a support, the support is provided with an iron core placing hole, the stator iron core is placed in the iron core placing hole, the stator iron core is a columnar iron core formed by superposing a plurality of vertically arranged oriented silicon steel sheets, the middle part of the stator iron core is a supporting and dividing part, the supporting and dividing part divides the stator iron core into an upper part and a lower part, superconducting coil winding parts are symmetrically arranged on the upper part and the lower part of the stator iron core respectively, an oriented steel belt winds the superconducting coil winding parts of the stator iron core and forms a superconducting coil, and the superconducting coil which is symmetrically arranged along the upper part and the lower part of the stator iron core is a stator winding structure.
Because the superconducting coil is adopted, the superconducting coil has superconductivity when the critical temperature T, the critical magnetic field intensity H and the critical current density J are within the values, and the resistance of the superconducting coil is zero. This will reduce the resistance loss of the superconducting motor winding to zero, which solves the problems of armature winding heating and temperature rise and greatly improves the motor efficiency. More importantly, the critical magnetic field intensity and critical current density of the superconducting coil are high, so that the air gap magnetic flux density and the current density of the winding of the superconducting motor can be improved by a plurality of times or even tens of times compared with the traditional conventional motor. This greatly increases the power density of the motor and reduces the weight, bulk and material consumption of the motor.
The superconducting coil is adopted, so that the current carrying capacity of the winding is improved, a magnetic field which is several times larger than that of a conventional coil is generated, and the magnetic field has almost no joule heat loss, thus the superconducting coil has a series of advanced technical and economic characteristics. The motor efficiency can be improved by about 0.5 to 0.8 percent compared with the conventional motor if the motor is used for a synchronous generator; the volume is small, the weight is light, and the weight of the whole machine can be reduced by 1/3-1/2; the reactance of the motor can be reduced to 1/4, so that the running stability of the motor is improved. And because the air gap magnetic flux density can be 4-5 times larger than that of the conventional motor, the single machine capacity can reach more than million kilovolts.
Specifically, the upper superconducting coil and the lower superconducting coil are arranged in a bidirectional symmetrical winding way, so that the power density of the motor can be greatly improved in a limited volume, meanwhile, due to the existence of the support dividing part, the winding of the superconducting coils is more convenient and ordered, the size of the superconducting coils and the size of the support dividing part can be set according to the size and specification of the motor, and the power density of the motor can reach the optimal value. Meanwhile, the superconducting coil is in contact with the motor casing, a cooling channel is arranged in the motor casing, the cooling channel is arranged around the iron core placing hole and is arranged corresponding to the superconducting coil, and cooling medium in the cooling channel can effectively cool the iron core at any time. The subversion structure improvement of the disc motor improves the power density of the motor in a limited volume, so that the motor obtains higher salient pole rate.
In the implementation, the scheme of the invention can also be made into a single-rotor structure, namely, a single-side superconducting coil is arranged on a stator core, the superconducting coil is wound by adopting an oriented steel belt, the power density of the motor is improved, a cooling channel matched with the superconducting coil is arranged in a bracket, the cooling channel is arranged along each superconducting coil in a wrapping way, and the cooling channel surrounds the superconducting coil and can effectively cool the superconducting coil. Because the oriented silicon steel is adopted, the oriented silicon steel lamination with higher magnetic conductivity is used in the polarization direction of the rotor, and meanwhile, the oriented silicon steel lamination is also used in the pole shoe of the stator, so that the driving motor still has higher salient pole ratio under the condition of larger current, the slot leakage reactance of the stator and the rotor is effectively reduced, larger torque is provided, and higher power density is output.
In one embodiment, referring to fig. 6 and 7, the magnetic conduction direction of each piece of stacked oriented silicon steel sheet is parallel to the axial direction of the iron core placing hole, and each piece of oriented silicon steel sheet is of a cross structure with a convex extending from the middle to two sides and symmetrically arranged at the upper and lower parts; the middle part extends to two sides to form a square or rectangular structure, the middle part of each oriented silicon steel sheet is consistent in size, so that the middle part of the iron core column formed after superposition can be guaranteed to form an effective supporting partition part, the supporting partition part plays a role in partitioning an upper superconducting coil and a lower superconducting coil, and plays a role in supporting the superconducting coils so as to enable the superconducting coils to be tightly attached to a cooling waterway, but the upper part and the lower part of each oriented silicon steel sheet are in a gradual change process, the upper part and the lower part of the oriented silicon steel sheet arranged at two ends of the iron core are narrower in width, the upper part and the lower part of the oriented silicon steel sheet arranged at the middle part of the iron core are wider in width, the upper part and the lower part of the iron core formed after superposition are cylindrical columns, and symmetrical column planes are arranged on the outer side walls of the cylindrical columns, so that the column columns form a closed circular runway from the end face, and the runway-shaped structure is favorable for wrapping the superconducting coils, and can be fixed more firmly, and better in stability and material loss is reduced in winding.
Meanwhile, the oriented silicon steel sheet adopts a cross structure, so that materials are saved when the oriented steel strip is prepared, the rolling process is simpler, more convenient and feasible, and the width of the oriented silicon steel sheet in the middle is larger than that of the oriented silicon steel sheets at two ends when the oriented silicon steel sheets are overlapped, so that racetrack-shaped stand columns are formed at the two ends of an iron core formed after the iron core are spliced, the racetrack-shaped stand columns are favorable for winding superconducting coils, the magnetic loss is reduced, and the motor driving efficiency is improved.
In another embodiment, referring to fig. 1, a motor housing is provided with 9 iron core placement holes, a stator iron core is placed in the iron core placement holes, the iron core placement holes can be round holes or oval holes, the matching relationship between the stator iron core and the iron core placement holes can be specifically shown in fig. 5, the stator iron core is a columnar iron core formed by superposing a plurality of vertically arranged oriented silicon steel sheets, the middle part of the stator iron core is a supporting and dividing part, the supporting and dividing part divides the stator iron core into an upper part and a lower part, superconducting coil winding parts are symmetrically arranged on the upper part and the lower part of the stator iron core respectively, and an oriented steel belt winds the superconducting coil winding parts of the stator iron core and forms superconducting coils. The motor casing is internally provided with two groups of cooling channels, the height positions of the two groups of cooling channels are matched with the winding positions of the two superconducting coils of the stator core, the upper part and the lower part of each iron core are respectively provided with the superconducting coils which are symmetrically arranged due to the special structure of the iron core, the two groups of cooling channels are respectively arranged corresponding to the superconducting coils and are used for effectively winding and cooling each superconducting coil, the side part of the motor casing is provided with a water inlet and a water outlet of the cooling channels, the cooling channels are sequentially wound along each superconducting coil, and a cooling medium in the cooling channels is liquid nitrogen.
Referring to fig. 5 and 9, each set of cooling channels includes two water channels, the inner side and the outer side of each superconducting coil are respectively provided with a cooling channel water inlet end or a cooling channel water outlet end, for example, the inner side of a first superconducting coil is provided with a cooling channel water inlet end, the outer side is provided with a cooling channel water outlet end, the inner side of a second superconducting coil is provided with a cooling channel water outlet end, the outer side is provided with a cooling channel water inlet end, and the cooling channel water inlet end and the water outlet end are reversely and alternately arranged at the side parts of two adjacent superconducting coils. The two branch water channels are subjected to the alternating processes of separation, combination, separation and combination, so that the two branch water channels can simultaneously and rapidly cool one superconducting coil when being separated, the flow speed is not reduced when the two branch water channels pass through a bend, the two branch water channels can mutually perform heat exchange when being combined, the heat balance between cooling channels is achieved, the preparation is made for the next cooling, meanwhile, the space of the flow channel layout is saved, and meanwhile, the flow channel is perfectly matched with the superconducting coil when flowing into the layout, so that the efficiency is enhanced.
In a specific embodiment, the iron core placement holes are uniformly arranged along the inner wall of the motor housing, the number of the iron core placement holes is 3N, wherein N is a natural number greater than or equal to 1, and the preferred value of N is 2-12. The middle part of stator core is the support division portion, and upper and lower part is cylindric stand that the symmetry set up, and cylindric stand is around having the superconducting coil outward, such a overall arrangement for the stator structure of motor is very firm, can steady operation under the operating mode under the condition complicacy.
Furthermore, the oriented silicon steel sheets are of a cross structure, materials are saved when the oriented steel strips are prepared, the rolling process is simpler, more convenient and feasible, when the oriented silicon steel sheets are overlapped, the width of the oriented silicon steel sheets in the middle is wider, and the widths of the oriented silicon steel sheets at the two ends are narrower, so that racetrack-shaped stand columns are formed at the two ends of the iron core formed after the iron core are spliced, the racetrack-shaped stand columns are favorable for winding superconducting coils, the magnetic loss is reduced, and the motor driving efficiency is improved. When the superconducting coil is wound, the superconducting wire is wound on the upright column layer by layer, 4-8 layers are generally required to be wound, and the thickness of each wound layer is basically consistent, so that the outer surface of the wound superconducting coil can be attached to the support, and the cooling effect of the cooling channel on the superconducting coil is further facilitated. A gap is arranged between the superconducting coils wound on two adjacent stator cores. The effect is very obvious by winding the superconducting coil, and the resistance of the superconducting coil is zero because the superconducting coil has superconductivity within the critical temperature T, the critical magnetic field intensity H and the critical current density J. This will reduce the resistance loss of the superconducting motor winding to zero, which solves the problems of armature winding heating and temperature rise and greatly improves the motor efficiency. More importantly, the critical magnetic field intensity and critical current density of the superconducting coil are high, so that the air gap magnetic flux density and the current density of the winding of the superconducting motor can be improved by a plurality of times or even tens of times compared with the traditional conventional motor. This greatly increases the power density of the motor and reduces the weight, bulk and material consumption of the motor.
According to the technical scheme, the iron loss of the oriented steel strip in the rolling direction is only 1/3 of that of the transverse direction, and the magnetic permeability ratio is 6:1, the iron loss is about 1/2 of that of a hot rolled strip, the magnetic conductivity is 2.5 times of that of the hot rolled strip, the iron loss of the driving motor is reduced, and the induction driving motor obtains higher torque output through the ultrahigh magnetic induction of oriented silicon steel in the magnetization direction.
The above description of the specific embodiments of the present invention has been given by way of example only, and the present invention is not limited to the above described specific embodiments. Any equivalent modifications and substitutions for the present invention will occur to those skilled in the art, and are also within the scope of the present invention. Accordingly, equivalent changes and modifications are intended to be included within the scope of the present invention without departing from the spirit and scope thereof.
Claims (6)
1. A disc superconducting motor, said motor comprising a rotor and a stator cooperating with the rotor, characterized in that: the stator is arranged in the motor shell and comprises a stator core and a stator winding; the motor is characterized in that a bracket is arranged in the motor shell, an iron core placing hole is formed in the bracket, a stator iron core is placed in the iron core placing hole, the stator iron core is a columnar iron core formed by superposing a plurality of vertically arranged oriented silicon steel sheets, the middle part of the stator iron core is a supporting and dividing part, superconducting coil winding parts are symmetrically arranged on the upper part and the lower part of the stator iron core respectively, and an oriented steel belt is wound on the superconducting coil winding parts of the stator iron core and forms superconducting coils; the superconducting coil is contacted with the motor shell, a cooling channel is arranged in the motor shell, and the cooling channel is arranged around the iron core placing hole and corresponds to the superconducting coil; the magnetic conduction direction of each piece of overlapped oriented silicon steel sheet is parallel to the axial direction of the iron core placing hole, and each piece of oriented silicon steel sheet is of a cross structure with a convex extending from the middle part to two sides and symmetrically arranged at the upper part and the lower part; the middle part of the columnar stator core is a square upright post, the upper part and the lower part are cylindrical upright posts, and symmetrical upright post planes are arranged on the outer side walls of the cylindrical upright posts.
2. A disc superconducting motor according to claim 1, wherein: the support is internally provided with two groups of cooling channels, the height positions of the two groups of cooling channels are matched with the winding positions of the two superconducting coils of the stator core, the side part of the motor shell is provided with a water inlet and a water outlet of the cooling channels, the cooling channels are sequentially wrapped along each superconducting coil, and a cooling medium in the cooling channels is liquid nitrogen.
3. A disc superconducting motor according to claim 1, wherein: the iron core placing holes are uniformly distributed along the inner wall of the motor shell, the number of the iron core placing holes is 3N, and N is a natural number which is more than or equal to 1.
4. A disc superconducting motor according to claim 1, wherein: the middle parts of the oriented silicon steel sheets are the same in size, the upper and lower parts of the oriented silicon steel sheets at the middle parts are wider when a plurality of oriented silicon steel sheets are overlapped, and the upper and lower parts of the oriented silicon steel sheets at the two ends are narrower, so that the upper and lower parts of the iron core formed by overlapping and splicing the oriented silicon steel sheets form a runway-shaped stand column.
5. A disc superconducting motor according to claim 1, wherein: a gap is arranged between the superconducting coils wound on two adjacent stator cores.
6. A disc superconducting motor according to claim 2, wherein: each group of cooling channels comprises two water channels, and the inner side and the outer side of each superconducting coil are respectively provided with a cooling channel water inlet end or a cooling channel water outlet end;
two water channels enter the water inlet end of the cooling channel of one superconducting coil in parallel, then the two water channels face each other to surround the superconducting coil and then are converged at the water outlet end of the cooling channel, the two water channels after the convergence enter the water inlet end of the cold water channel of the next superconducting coil in parallel, and the like, so that a complete cooling channel loop is formed.
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| CN201710919842.0A CN107659005B (en) | 2017-09-30 | 2017-09-30 | Disc type superconducting motor |
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| CN201710919842.0A CN107659005B (en) | 2017-09-30 | 2017-09-30 | Disc type superconducting motor |
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| CN107659005B true CN107659005B (en) | 2023-10-20 |
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| CN109462311B (en) * | 2019-01-14 | 2025-04-04 | 上海盘毂动力科技股份有限公司 | A cooling system and a motor |
| CN110601390B (en) * | 2019-09-27 | 2024-10-18 | 卧龙电气(上海)中央研究院有限公司 | Permanent magnet motor |
| CN112165236B (en) * | 2020-10-10 | 2025-03-07 | 苏州英磁新能源科技有限公司 | A hybrid superconducting disc motor with superconducting stator |
| CN113964966B (en) * | 2021-10-28 | 2023-03-10 | 中国第一汽车股份有限公司 | Stator assembly, manufacturing method thereof and axial flux motor |
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