CN115296495A - Four-suspension-pole internal and external double-rotor type magnetic suspension switched reluctance motor - Google Patents
Four-suspension-pole internal and external double-rotor type magnetic suspension switched reluctance motor Download PDFInfo
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- CN115296495A CN115296495A CN202211169872.1A CN202211169872A CN115296495A CN 115296495 A CN115296495 A CN 115296495A CN 202211169872 A CN202211169872 A CN 202211169872A CN 115296495 A CN115296495 A CN 115296495A
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- 239000000725 suspension Substances 0.000 title claims abstract description 106
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
- 238000005339 levitation Methods 0.000 claims description 28
- 238000004804 winding Methods 0.000 claims description 25
- 230000005389 magnetism Effects 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims description 9
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 238000007667 floating Methods 0.000 description 53
- 230000004907 flux Effects 0.000 description 20
- 238000010586 diagram Methods 0.000 description 8
- 230000003068 static effect Effects 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
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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
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
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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
- H02K1/17—Stator cores with permanent magnets
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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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The invention discloses a four-suspension-pole inner-outer double-rotor type magnetic suspension switched reluctance motor, which comprises: the stator assembly is a circular ring piece; the rotor subassembly, the rotor subassembly includes outer rotor core and inner rotor core, the outer rotor core is located stator module's outside, the inner rotor core is located stator module's inside, the inner rotor core cover is established in the pivot, the central axis of rotor subassembly, the central axis of outer rotor core, the central axis of inner rotor core and the central axis collineation of pivot, outer rotor core and inner rotor core can carry out synchronous rotation for stator module. The invention realizes the stable suspension and rotation of the rotor by controlling two radial degrees of freedom through utilizing the magnetic resistance to passively suspend in the axial direction, has high axial utilization rate and high suspension force density and torque density, continuously rotates and generates continuous electromagnetic torque through an external control circuit, has no torque dead zone, is simple to control, and has lower manufacturing cost and power consumption.
Description
Technical Field
The invention belongs to the technical field of reluctance motors, and particularly relates to a four-suspension-pole inner-outer double-rotor type magnetic suspension switched reluctance motor.
Background
The magnetic suspension switched reluctance motor rotor is free of permanent magnets and windings, has the advantages of no friction and wear, simple and firm structure and high strength, is easy to realize high-speed operation, and has a great application prospect in the field of high-speed application.
In order to realize the stable suspension operation of the rotor of the magnetic suspension switched reluctance motor, a five-freedom-degree magnetic suspension switched reluctance motor system is formed by adopting a two-freedom-degree magnetic suspension switched reluctance motor, a radial two-freedom-degree magnetic bearing, an axial single-freedom-degree magnetic bearing or a radial-axial three-freedom-degree magnetic suspension bearing, so that the system has the advantages of longer axial length, low critical rotation speed, lower suspension force density and power density, strong coupling between suspension force and torque, complex control and difficulty in industrial application in the field of miniaturized liquid transmission.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, the four-suspension-pole inner and outer double-rotor type magnetic suspension switched reluctance motor has the advantages that stable suspension and rotation of the rotor can be realized only by controlling two radial degrees of freedom, the axial utilization rate is high, the structure is compact, the torque is not coupled with the suspension force, the control is simple, and the manufacturing cost and the power consumption are low.
The four-suspension-pole inner-outer double-rotor type magnetic suspension switched reluctance motor comprises: the stator assembly is a circular ring piece; the rotor assembly comprises an outer rotor iron core and an inner rotor iron core, the outer rotor iron core is located outside the stator assembly, the inner rotor iron core is located inside the stator assembly, the inner rotor iron core is arranged on the rotating shaft in a sleeved mode, the central axis of the rotor assembly, the central axis of the outer rotor iron core, the central axis of the inner rotor iron core and the central axis of the rotating shaft are collinear, and the outer rotor iron core and the inner rotor iron core can rotate synchronously relative to the stator assembly.
According to one embodiment of the invention, the stator assembly comprises: a left outer stator core; the right outer side stator core and the left outer side stator core are arranged at intervals along the axial direction and are connected through a permanent magnet ring; the left inner side stator core is positioned on one side, facing the inner rotor core, of the left outer side stator core, and a magnetism isolating aluminum ring is arranged between the left inner side stator core and the left outer side stator core; the right side inner side stator core, the right side inner side stator core is located right side outer side stator core orientation one side of inner rotor core, right side inner side stator core with be provided with between the right side outer side stator core and separate magnetism aluminium ring, right side inner side stator core with left side inner side stator core separates along axial direction and sets up, right side inner side stator core with left side inner side stator core passes through the permanent magnetism ring and links to each other.
According to one embodiment of the invention, four left outer suspension teeth and four left outer torque teeth are arranged on the outer peripheral surface of the left outer stator core, the four left outer suspension teeth are uniformly arranged at intervals along the circumferential direction, the four left outer torque teeth are uniformly arranged at intervals along the circumferential direction, and each left outer torque tooth is correspondingly arranged between two adjacent left outer suspension teeth; the stator core comprises a stator core and is characterized in that four right outer side suspension teeth and four right outer side torque teeth are arranged on the outer peripheral surface of the right outer side stator core, the four right outer side suspension teeth are arranged along the circumferential direction at even intervals, the four right outer side torque teeth are arranged along the circumferential direction at even intervals, and each right outer side torque tooth is correspondingly arranged between every two adjacent right outer side suspension teeth.
According to one embodiment of the present invention, the left outboard suspension tooth and the right outboard suspension tooth are disposed opposite to each other in the axial direction, and the left outboard torque tooth and the right outboard torque tooth are disposed opposite to each other in the axial direction; the left outer side torque tooth is connected with the left outer side stator core through a magnetic isolation block, and the right outer side torque tooth is connected with the right outer side stator core through a magnetic isolation block.
According to one embodiment of the invention, four left inner suspension teeth and four left inner torque teeth are arranged on the inner circumferential surface of the left inner stator core, the four left inner suspension teeth are uniformly arranged at intervals along the circumferential direction, the four left inner torque teeth are uniformly arranged at intervals along the circumferential direction, and each left inner torque tooth is correspondingly arranged between two adjacent left inner suspension teeth; the inner circumferential surface of the right inner side stator core is provided with four right inner side suspension teeth and four right inner side torque teeth, the four right inner side suspension teeth are uniformly arranged at intervals along the circumferential direction, the four right inner side torque teeth are uniformly arranged at intervals along the circumferential direction, and each right inner side torque tooth is correspondingly arranged between every two adjacent right inner side suspension teeth.
According to one embodiment of the present invention, the left inner floating tooth and the right inner floating tooth are disposed opposite to each other in the axial direction, and the left inner torque tooth and the right inner torque tooth are disposed opposite to each other in the axial direction; the left inner side torque tooth is connected with the left inner side stator core through a magnetism isolating block, and the right inner side torque tooth is connected with the right inner side stator core through a magnetism isolating block.
According to one embodiment of the invention, the left outer floating tooth, the right outer floating tooth, the left inner floating tooth and the right inner floating tooth are all provided with floating windings; the left outer torque tooth, the right outer torque tooth, the left inner torque tooth and the right inner torque tooth are all provided with torque windings.
According to an embodiment of the present invention, nine left outer rotor teeth and nine right outer rotor teeth are disposed on an inner circumference of the outer rotor core, the nine left outer rotor teeth are uniformly spaced along a circumferential direction, the nine right outer rotor teeth are uniformly spaced along a circumferential direction, the left outer rotor teeth and the right outer rotor teeth are disposed opposite to each other in an axial direction, and outer air gaps are present between the left outer rotor teeth and the left outer floating teeth, between the left outer rotor teeth and the left outer torque teeth, between the right outer rotor teeth and the right outer floating teeth, and between the right outer rotor teeth and the right outer torque teeth.
According to an embodiment of the present invention, nine left outer inner rotor teeth and nine right outer inner rotor teeth are disposed on an outer circumference of the inner rotor core, the nine left outer inner rotor teeth are uniformly spaced apart in a circumferential direction, the nine right outer inner rotor teeth are uniformly spaced apart in the circumferential direction, the left outer inner rotor teeth and the right outer inner rotor teeth are disposed opposite to each other in an axial direction, and inner air gaps exist between the left outer inner rotor teeth and the left inner floating teeth, between the left outer inner rotor teeth and the left inner torque teeth, between the right outer inner rotor teeth and the right inner floating teeth, and between the right outer inner rotor teeth and the right inner torque teeth.
According to an embodiment of the present invention, a central angle corresponding to the extrados surface of the left outer floating tooth, a central angle corresponding to the extrados surface of the right outer floating tooth, a central angle corresponding to the intrados surface of the left inner floating tooth, and a central angle corresponding to the intrados surface of the right inner floating tooth are all 40 °; the central angle that the extrados of left outside torque tooth corresponds, the central angle that the extrados of right outside torque tooth corresponds, the central angle that the intrados of left inside torque tooth corresponds, the central angle that the intrados of right inside torque tooth corresponds, the central angle that the intrados of left outside outer rotor tooth corresponds, the central angle that the intrados of right outside outer rotor tooth corresponds, the central angle that the extrados of left outside inner rotor tooth corresponds, the central angle that the extrados of right outside inner rotor tooth corresponds is 20.
The invention has the beneficial effects that the structure is simple, the stator and the rotor are flattened by designing the whole magnetic suspension switch reluctance motor into a flat shape, the axial direction of the magnetic suspension switch reluctance motor utilizes the reluctance force to perform passive suspension, the stable suspension and rotation of the rotor can be realized only by controlling two radial degrees of freedom, the axial utilization rate is high, the suspension force density and the torque density are higher, the sealing of the rotor is easy to realize, the torque is not coupled with the suspension force, the continuous rotation is realized through an external control circuit, the continuous electromagnetic torque is generated, the torque dead zone is avoided, the control is simple, and the manufacturing cost and the power consumption are lower.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a sectional view of a suspension tooth of a four-suspension-pole inner and outer double-rotor type magnetic suspension switched reluctance motor according to the present invention;
fig. 2 is a schematic diagram of a permanent magnet ring magnetic circuit of a four-suspension-pole inner-outer double-rotor type magnetic suspension switched reluctance motor according to the invention;
fig. 3 is a schematic diagram of a levitation magnetic circuit of a four-levitation-pole inner-outer double-rotor type magnetic levitation switched reluctance motor according to the present invention;
fig. 4 is a torque tooth split view of a four-levitation-pole inner and outer double-rotor type magnetic levitation switched reluctance motor according to the present invention;
FIG. 5 is a schematic diagram of a torque magnetic circuit of a four-levitation-pole inner-outer double-rotor type magnetic levitation switched reluctance motor according to the present invention;
fig. 6 is a left radial cross-sectional structural diagram of a four-levitation-pole inner-outer double-rotor type magnetic levitation switched reluctance motor according to the present invention;
fig. 7 is a right radial cross-sectional structural diagram of a four-levitation-pole inner-outer double-rotor type magnetic levitation switched reluctance motor according to the present invention;
fig. 8 is a schematic diagram of a first structure of a four-suspension-pole inner-outer double-rotor type magnetic suspension switched reluctance motor according to the present invention in operation;
fig. 9 is a second structure diagram of a four-suspension-pole inner and outer double-rotor type magnetic suspension switched reluctance motor according to the present invention;
fig. 10 is a schematic diagram of a third structure of a four-suspension-pole inner-outer double-rotor type magnetic suspension switched reluctance motor according to the present invention in operation;
fig. 11 is a schematic view of a fourth structure of a four-suspension-pole inner and outer double-rotor type magnetic suspension switched reluctance motor according to the present invention;
reference numerals are as follows:
the permanent magnet type permanent magnet motor comprises a left outer stator iron core 1, a right outer stator iron core 2, a left inner stator iron core 3, a right inner stator iron core 4, a permanent magnet ring 5, a magnetism isolating aluminum ring 6, a magnetism isolating block 7, an outer rotor iron core 8, an inner rotor iron core 9, an outer air gap 10, an inner air gap 101, a levitation winding 102, a torque winding 103, a left outer levitation tooth 11, a right outer levitation tooth 21, a left inner levitation tooth 31, a right inner levitation tooth 41, a left outer torque tooth 12, a right outer torque tooth 22, a left inner torque tooth 32, a right inner torque tooth 42, a left outer rotor tooth 81, a right outer rotor tooth 82, a left outer inner rotor tooth 91, a right outer inner rotor tooth 92, a first static bias magnetic flux 37, a second static bias magnetic flux 38, an outer radial levitation control magnetic flux 39, an inner radial levitation control magnetic flux 40 and a magnetic flux 401.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The four-suspension-pole inner-outer double-rotor type magnetic suspension switched reluctance motor of the embodiment of the invention is described in detail with reference to the attached drawings.
As shown in fig. 1 to 11, a four-levitation-pole inner-outer double-rotor type magnetic levitation switched reluctance motor according to an embodiment of the present invention includes: the stator assembly is a circular ring; the rotor subassembly includes outer rotor core 8 and inner rotor core 9, and outer rotor core 8 is located stator module's outside, and inner rotor core 9 is located stator module's inside, and inner rotor core 9 cover is established in the pivot, and the central axis of rotor subassembly, outer rotor core 8's the central axis, the central axis of inner rotor core 9 and the central axis collineation of pivot, outer rotor core 8 and inner rotor core 9 can carry out synchronous rotation for stator module. The stator assembly and the rotor assembly are formed by silicon steel sheets in an overlapping mode. The outer rotor iron core 8 and the inner rotor iron core 9 are connected through a connecting piece made of non-magnetic materials, so that the outer rotor iron core 8 and the inner rotor iron core 9 are prevented from being magnetically influenced with each other while synchronous movement of the outer rotor iron core 8 and the inner rotor iron core 9 is realized. As can be seen from fig. 1 and 2, the stator assembly of the magnetic suspension switched reluctance motor of the present application is a circular ring, the outer rotor core 8 and the inner rotor core 9 are also circular ring members, the outer rotor core 8, the stator assembly and the inner rotor core 9 are arranged from outside to inside, the thickness of the whole magnetic suspension switched reluctance motor in the axial direction is relatively thin, and the rotor assembly can utilize the reluctance force to suspend in the axial direction.
According to one embodiment of the invention, a stator assembly comprises: the stator comprises a left outer side stator core 1, a right outer side stator core 2, a left inner side stator core 3 and a right inner side stator core 4, wherein the right outer side stator core 2 and the left outer side stator core 1 are arranged at intervals along the axial direction, and the right outer side stator core 2 is connected with the left outer side stator core 1 through a permanent magnet ring 5; the left inner side stator core 3 is positioned on one side of the left outer side stator core 1 facing the inner rotor core 9, and a magnetism isolating aluminum ring 6 is arranged between the left inner side stator core 3 and the left outer side stator core 1; the right inner side stator core 4 is positioned on one side of the right outer side stator core 2 facing the inner rotor core 9, a magnetic isolation aluminum ring 6 is arranged between the right inner side stator core 4 and the right outer side stator core 2, the right inner side stator core 4 and the left inner side stator core 3 are arranged at intervals along the axial direction, and the right inner side stator core 4 is connected with the left inner side stator core 3 through a permanent magnet ring 5.
That is, as can be seen from fig. 1 to 5, the stator assembly has a symmetrical structure in the left and right directions. The permanent magnet ring 5 is made of rare earth permanent magnet or ferrite permanent magnet.
According to one embodiment of the present invention, four left outer floating teeth 11 and four left outer torque teeth 12 are disposed on the outer circumferential surface of the left outer stator core 1, the four left outer floating teeth 11 are uniformly spaced along the circumferential direction, the four left outer torque teeth 12 are uniformly spaced along the circumferential direction, and each left outer torque tooth 12 is correspondingly disposed between two adjacent left outer floating teeth 11; four right outer side suspension teeth 21 and four right outer side torque teeth 22 are arranged on the outer peripheral surface of the right outer side stator core 2, the four right outer side suspension teeth 21 are arranged at equal intervals along the circumferential direction, the four right outer side torque teeth 22 are arranged at equal intervals along the circumferential direction, and each right outer side torque tooth 22 is correspondingly arranged between two adjacent right outer side suspension teeth 21. In other words, the included angle between the center lines of two adjacent left outer floating teeth 11 is 90 °, the included angle between the center lines of two adjacent left outer torque teeth 12 is 90 °, the included angle between the center lines of two adjacent right outer floating teeth 21 is 90 °, and the included angle between the center lines of two adjacent right outer torque teeth 22 is 90 °.
According to one embodiment of the present invention, the left outer floating tooth 11 and the right outer floating tooth 21 are disposed opposite to each other in the axial direction, and the left outer torque tooth 12 and the right outer torque tooth 22 are disposed opposite to each other in the axial direction; the left outer torque tooth 12 is connected with the left outer stator core 1 through a magnet isolating block 7, and the right outer torque tooth 22 is connected with the right outer stator core 2 through the magnet isolating block 7.
According to an embodiment of the present invention, four left inner floating teeth 31 and four left inner torque teeth 32 are disposed on the inner circumferential surface of the left inner stator core 3, the four left inner floating teeth 31 are uniformly spaced along the circumferential direction, the four left inner torque teeth 32 are uniformly spaced along the circumferential direction, and each left inner torque tooth 32 is correspondingly disposed between two adjacent left inner floating teeth 31; four right inner side floating teeth 41 and four right inner side torque teeth 42 are arranged on the inner peripheral surface of the right inner side stator core 4, the four right inner side floating teeth 41 are uniformly arranged at intervals along the circumferential direction, the four right inner side torque teeth 42 are uniformly arranged at intervals along the circumferential direction, and each right inner side torque tooth 42 is correspondingly arranged between two adjacent right inner side floating teeth 41. In other words, the included angle between the center lines of two adjacent left inner floating teeth 31 is 90 °, the included angle between the center lines of two adjacent left inner torque teeth 32 is 90 °, the included angle between the center lines of two adjacent right inner floating teeth 41 is 90 °, and the included angle between the center lines of two adjacent right inner torque teeth 42 is 90 °.
As can be seen from fig. 4, 5, 6 and 7, the sections of the left outer torque tooth 12, the right outer torque tooth 22, the left inner torque tooth 32 and the right inner torque tooth 42 are formed in a U-shaped configuration. A group of coils is wound on the left part and the right part of the U-shaped structure, each group of coils generates magnetic flux 401 after being electrified, and when the electrifying directions are opposite, the magnetic flux 401 is also reversed.
According to one embodiment of the present invention, the left inner floating teeth 31 and the right inner floating teeth 41 are disposed opposite to each other in the axial direction, and the left inner torque teeth 32 and the right inner torque teeth 42 are disposed opposite to each other in the axial direction; the left inner torque tooth 32 is connected with the left inner stator core 3 through a magnetic isolation block 7, and the right inner torque tooth 42 is connected with the right inner stator core 4 through the magnetic isolation block 7.
According to one embodiment of the present invention, the left outer floating tooth 11, the right outer floating tooth 21, the left inner floating tooth 31 and the right inner floating tooth 41 are all provided with floating windings 102; the left outer torque tooth 12, the right outer torque tooth 22, the left inner torque tooth 32, and the right inner torque tooth 42 are each provided with a torque winding 103.
The suspension winding 102 and the torque winding 103 are formed by winding an electromagnetic coil and then dipping in paint and drying. The torque windings 103 wound on each U-shaped structure are connected in series or in parallel in opposite directions. The suspension winding 102 of the left outer suspension tooth 11 and the suspension winding 102 of the left inner suspension tooth 31 in the same radial direction are connected in series or in parallel in the same direction; the levitation windings 102 of the right outer levitation tooth 21 and the levitation windings 102 of the right inner levitation tooth 41 in the same radial direction are connected in series or in parallel in the same direction.
According to an embodiment of the present invention, nine left outer rotor teeth 81 and nine right outer rotor teeth 82 are disposed on the inner circumference of the outer rotor core 8, the nine left outer rotor teeth 81 are uniformly spaced apart in the circumferential direction, the nine right outer rotor teeth 82 are uniformly spaced apart in the circumferential direction, the left outer rotor teeth 81 and the right outer rotor teeth 82 are disposed opposite to each other in the axial direction, and the outer air gaps 10 are present between the left outer rotor teeth 81 and the left outer suspension teeth 11, between the left outer rotor teeth 81 and the left outer torque teeth 12, between the right outer rotor teeth 82 and the right outer suspension teeth 21, and between the right outer rotor teeth 82 and the right outer torque teeth 22.
According to an embodiment of the present invention, nine left outer inner rotor teeth 91 and nine right outer inner rotor teeth 92 are disposed on the outer circumference of the inner rotor core 9, the nine left outer inner rotor teeth 91 are uniformly spaced along the circumferential direction, the nine right outer inner rotor teeth 92 are uniformly spaced along the circumferential direction, the left outer inner rotor teeth 91 and the right outer inner rotor teeth 92 are disposed opposite to each other in the axial direction, and inner air gaps 101 are respectively present between the left outer inner rotor teeth 91 and the left inner floating teeth 31, between the left outer inner rotor teeth 91 and the left inner torque teeth 32, between the right outer inner rotor teeth 92 and the right inner floating teeth 41, and between the right outer inner rotor teeth 92 and the right inner torque teeth 42.
According to an embodiment of the present invention, the central angle corresponding to the extrados of the left outside floating tooth 11, the central angle corresponding to the extrados of the right outside floating tooth 21, the central angle corresponding to the intrados of the left inside floating tooth 31, and the central angle corresponding to the intrados of the right inside floating tooth 41 are all 40 °; the central angle corresponding to the outer arc surface of the left outer torque tooth 12, the central angle corresponding to the outer arc surface of the right outer torque tooth 22, the central angle corresponding to the inner arc surface of the left inner torque tooth 32, the central angle corresponding to the inner arc surface of the right inner torque tooth 42, the central angle corresponding to the inner arc surface of the left outer rotor tooth 81, the central angle corresponding to the inner arc surface of the right outer rotor tooth 82, the central angle corresponding to the outer arc surface of the left outer inner rotor tooth 91, and the central angle corresponding to the outer arc surface of the right outer inner rotor tooth 92 are all 20 °.
The permanent magnet ring 5 provides a first static bias magnetic flux 37 and a second static bias magnetic flux 38, and the magnetic circuit of the first static bias magnetic flux 37 is as follows: the magnetic flux is emitted from the N pole of the permanent magnet ring 5, and returns to the S pole of the permanent magnet ring 5 through the right outer floating tooth 21, the outer air gap 10, the outer rotor core 8, the outer air gap 10, and the left outer stator core 1 on the right outer stator core 2. The magnetic circuit of the second static bias flux 38 is: the magnetic flux starts from the N pole of the permanent magnet ring 5, and returns to the S pole of the permanent magnet ring 5 through the right inner floating teeth 41, the inner air gap 101, the inner rotor core 9, the inner air gap 101, and the left inner stator core 3 on the right inner stator core 4.
The levitation winding 102 on the right outer levitation tooth 21 and the levitation winding 102 on the left outer levitation tooth 11 are electrified to generate the outer radial levitation control magnetic flux 39, and the magnetic circuit is as follows: right outer floating tooth 21, left outer floating tooth 11, outer air gap 10, left outer rotor tooth 81, right outer rotor tooth 82, outer air gap 10, and right outer floating tooth 21 form a closed loop. When the energizing direction changes, the direction of the magnetic circuit changes reversely.
The inner radial suspension control magnetic flux 40 generated by electrifying the suspension winding 102 wound on the right inner side suspension tooth 41 and the suspension winding 102 wound on the left inner side suspension tooth 31 has a magnetic circuit as follows: the right inner floating tooth 41, the inner air gap 101, the right outer inner rotor tooth 92, the left outer inner rotor tooth 91, the inner air gap 101, the left inner floating tooth 31 and the right inner floating tooth 41 form a closed loop. When the energizing direction changes, the direction of the magnetic circuit changes reversely.
Suspension principle: the first static bias flux 37 and the second static bias flux 38 interact with the outer radial levitation control flux 39 and the inner radial levitation control flux 40 in the radial direction, so that the superposition of air-gap magnetic fields on the same side with the radial eccentricity direction of the rotor is weakened, the superposition of air-gap magnetic fields in the opposite direction is strengthened, a force opposite to the offset direction of the rotor is generated on the rotor, and the rotor is pulled back to the radial equilibrium position.
The rotation principle is as follows: as shown in fig. 8 to 11, for identification, four left outer floating teeth 11 are marked as A1, B1, C1, and D1, four left outer torque teeth 12 are marked as X1, Y1, Z1, and W1, four left inner floating teeth 31 are marked as A2, B2, C2, and D2, four left inner torque teeth 32 are marked as X2, Y2, Z2, and W2, nine left outer rotor teeth 81 are marked as R1, R2, 82309, 9, and nine left outer inner rotor teeth 91 are marked as R10, R11, 8230828230, 18. When the rotor is in the state shown in fig. 8, X1 and X2 are respectively aligned with R2 and R11, when Y1 leads R4 in the counterclockwise direction by 10 °, Y2 leads R13 in the counterclockwise direction by 10 °, Z1 leads R6 in the counterclockwise direction by 20 °, Z2 leads R15 in the counterclockwise direction by 20 °, W1 lags R9 in the counterclockwise direction by 10 °, W2 leads R18 in the counterclockwise direction by 10 °, and torque windings 103 on Y1 and Y2 are energized, magnetic flux 401 forming a closed loop is formed between Y1 and R4 and between Y2 and R13, so that outer rotor core 8 and inner rotor core 9 rotate 10 ° counterclockwise, and the state shown in fig. 9 is reached; at this time, the angle that Z1 leads R6 in the counterclockwise direction is 10 °, the angle that Z2 leads R15 in the counterclockwise direction is 10 °, the torque windings 103 on Z1 and Z2 are energized, the outer rotor core 8 and the inner rotor core 9 continue to rotate 10 ° counterclockwise, and the state shown in fig. 10 is reached; similarly, the torque windings 103 on W1 and W2 are energized to make the outer rotor core 8 and the inner rotor core 9 continuously rotate 10 ° counterclockwise, and reach the state of fig. 11, and then the torque windings 103 on X1 and X2 are energized to make the outer rotor core 8 and the inner rotor core 9 continuously rotate 10 ° counterclockwise, so that the energizing period is formed by repeating the steps, thereby realizing continuous rotation of the outer rotor core 8 and the inner rotor core 9 and continuous electromagnetic torque generation without torque dead zone.
The invention has the beneficial effects that the structure is simple, the stator and the rotor are flattened by designing the whole reluctance motor into a flat shape, the reluctance motor is axially passively suspended by utilizing the reluctance force, the stable suspension and rotation of the rotor can be realized by controlling two radial degrees of freedom, the axial utilization rate is high, the suspension force density and the torque density are higher, the sealing of the rotor is easy to realize, the torque and the suspension force are not coupled, the continuous rotation is realized through an external control circuit, the continuous electromagnetic torque is generated, the torque dead zone is avoided, the control is simple, and the manufacturing cost and the power consumption are lower.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a two rotor formula magnetic suspension switched reluctance motor in four suspension poles, its characterized in that includes:
the stator assembly is a circular ring piece;
the rotor assembly comprises an outer rotor iron core (8) and an inner rotor iron core (9), the outer rotor iron core (8) is positioned outside the stator assembly, the inner rotor iron core (9) is positioned inside the stator assembly, the inner rotor iron core (9) is sleeved on a rotating shaft, the central axis of the rotor assembly, the central axis of the outer rotor iron core (8), the central axis of the inner rotor iron core (9) and the central axis of the rotating shaft are collinear, and the outer rotor iron core (8) and the inner rotor iron core (9) can synchronously rotate relative to the stator assembly;
the stator assembly includes:
a left outer stator core (1);
the right outer side stator core (2), the right outer side stator core (2) and the left outer side stator core (1) are arranged at intervals along the axial direction;
the left inner side stator core (3), the left inner side stator core (3) is positioned on one side of the left outer side stator core (1) facing the inner rotor core (9);
a right inner stator core (4), the right inner stator core (4) being located on a side of the right outer stator core (2) facing the inner rotor core (9);
four left outer side suspension teeth (11) and four left outer side torque teeth (12) are arranged on the outer peripheral surface of the left outer side stator core (1), the four left outer side suspension teeth (11) are uniformly arranged at intervals along the circumferential direction, the four left outer side torque teeth (12) are uniformly arranged at intervals along the circumferential direction, and each left outer side torque tooth (12) is correspondingly arranged between two adjacent left outer side suspension teeth (11); four right outer side suspension teeth (21) and four right outer side torque teeth (22) are arranged on the outer peripheral surface of the right outer side stator core (2), the four right outer side suspension teeth (21) are uniformly arranged at intervals along the circumferential direction, the four right outer side torque teeth (22) are uniformly arranged at intervals along the circumferential direction, and each right outer side torque tooth (22) is correspondingly arranged between two adjacent right outer side suspension teeth (21);
four left inner side suspension teeth (31) and four left inner side torque teeth (32) are arranged on the inner peripheral surface of the left inner side stator core (3), the four left inner side suspension teeth (31) are uniformly arranged at intervals along the circumferential direction, the four left inner side torque teeth (32) are uniformly arranged at intervals along the circumferential direction, and each left inner side torque tooth (32) is correspondingly arranged between two adjacent left inner side suspension teeth (31); four right inner side suspension teeth (41) and four right inner side torque teeth (42) are arranged on the inner circumferential surface of the right inner side stator core (4), the four right inner side suspension teeth (41) are uniformly arranged at intervals along the circumferential direction, the four right inner side torque teeth (42) are uniformly arranged at intervals along the circumferential direction, and each right inner side torque tooth (42) is correspondingly arranged between two adjacent right inner side suspension teeth (41).
2. The four-suspension-pole inner and outer double-rotor type magnetic suspension switched reluctance motor according to claim 1, wherein the right outer stator core (2) is connected with the left outer stator core (1) through a permanent magnet ring (5); a magnetism isolating aluminum ring (6) is arranged between the left inner side stator core (3) and the left outer side stator core (1); inboard stator core in the right side (4) with be provided with between right side outside stator core (2) and separate magnetic aluminum ring (6), inboard stator core in the right side (4) with inboard stator core in the left side (3) are spaced apart to be set up along axial direction, inboard stator core in the right side (4) with inboard stator core in the left side (3) link to each other through permanent magnetism ring (5).
3. The inner and outer dual-rotor type magnetic suspension switched reluctance motor with four suspension poles according to claim 1, wherein said left outer suspension teeth (11) are axially oppositely disposed to said right outer suspension teeth (21), and said left outer torque teeth (12) are axially oppositely disposed to said right outer torque teeth (22); the left outer side torque teeth (12) are connected with the left outer side stator core (1) through a magnetic isolation block (7), and the right outer side torque teeth (22) are connected with the right outer side stator core (2) through the magnetic isolation block (7).
4. The four-suspension-pole inner and outer double-rotor type magnetic suspension switched reluctance motor according to claim 1, wherein the left inner suspension teeth (31) and the right inner suspension teeth (41) are arranged opposite to each other in the axial direction, and the left inner torque teeth (32) and the right inner torque teeth (42) are arranged opposite to each other in the axial direction; the left inner side torque tooth (32) is connected with the left inner side stator core (3) through a magnetic isolation block (7), and the right inner side torque tooth (42) is connected with the right inner side stator core (4) through the magnetic isolation block (7).
5. The four-suspension-pole inner and outer double-rotor type magnetic suspension switched reluctance motor as claimed in claim 1, wherein the left outer suspension tooth (11), the right outer suspension tooth (21), the left inner suspension tooth (31) and the right inner suspension tooth (41) are all provided with suspension windings (102); the left outer torque tooth (12), the right outer torque tooth (22), the left inner torque tooth (32) and the right inner torque tooth (42) are all provided with torque windings (103).
6. The four-suspension-pole inner and outer double-rotor type magnetic suspension switched reluctance motor according to claim 1, wherein nine left outer rotor teeth (81) and nine right outer rotor teeth (82) are disposed on the inner circumference of the outer rotor core (8), nine left outer rotor teeth (81) are uniformly spaced along the circumferential direction, nine right outer rotor teeth (82) are uniformly spaced along the circumferential direction, and the left outer rotor teeth (81) and the right outer rotor teeth (82) are oppositely disposed in the axial direction.
7. The four-floating-pole inner and outer double-rotor type magnetic suspension switched reluctance motor according to claim 6, wherein nine left outer inner rotor teeth (91) and nine right outer inner rotor teeth (92) are disposed on the outer circumference of the inner rotor core (9), nine left outer inner rotor teeth (91) are uniformly spaced along the circumferential direction, nine right outer inner rotor teeth (92) are uniformly spaced along the circumferential direction, and the left outer inner rotor teeth (91) and the right outer inner rotor teeth (92) are oppositely disposed in the axial direction.
8. The four-levitation-pole inner and outer double-rotor type magnetic levitation switched reluctance motor as claimed in claim 7, wherein an outer air gap (10) exists between the left outer rotor teeth (81) and the left outer levitation teeth (11), between the left outer rotor teeth (81) and the left outer torque teeth (12), between the right outer rotor teeth (82) and the right outer levitation teeth (21), and between the right outer rotor teeth (82) and the right outer torque teeth (22); inner air gaps (101) are formed between the left outer inner rotor teeth (91) and the left inner suspension teeth (31), between the left outer inner rotor teeth (91) and the left inner torque teeth (32), between the right outer inner rotor teeth (92) and the right inner suspension teeth (41), and between the right outer inner rotor teeth (92) and the right inner torque teeth (42).
9. The internal and external double-rotor magnetic suspension switched reluctance motor with four suspension poles according to claim 8, wherein the central angle corresponding to the extrados of the left outer suspension tooth (11), the central angle corresponding to the extrados of the right outer suspension tooth (21), the central angle corresponding to the intrados of the left inner suspension tooth (31), and the central angle corresponding to the intrados of the right inner suspension tooth (41) are all 40 °.
10. The four-suspension-pole inner-outer double-rotor magnetic suspension switched reluctance motor according to claim 9, wherein the central angle corresponding to the outer arc surface of the left outer torque tooth (12), the central angle corresponding to the outer arc surface of the right outer torque tooth (22), the central angle corresponding to the inner arc surface of the left inner torque tooth (32), the central angle corresponding to the inner arc surface of the right inner torque tooth (42), the central angle corresponding to the inner arc surface of the left outer rotor tooth (81), the central angle corresponding to the inner arc surface of the right outer rotor tooth (82), the central angle corresponding to the outer arc surface of the left outer inner rotor tooth (91), and the central angle corresponding to the outer arc surface of the right outer inner rotor tooth (92) are all 20 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211169872.1A CN115296495A (en) | 2022-09-26 | 2022-09-26 | Four-suspension-pole internal and external double-rotor type magnetic suspension switched reluctance motor |
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| CN202211169872.1A CN115296495A (en) | 2022-09-26 | 2022-09-26 | Four-suspension-pole internal and external double-rotor type magnetic suspension switched reluctance motor |
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| CN202211169872.1A Pending CN115296495A (en) | 2022-09-26 | 2022-09-26 | Four-suspension-pole internal and external double-rotor type magnetic suspension switched reluctance motor |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111953164A (en) * | 2020-09-17 | 2020-11-17 | 淮阴工学院 | Six-suspension-pole internal and external double-rotor type magnetic suspension sheet switch reluctance motor |
| CN212572338U (en) * | 2020-09-17 | 2021-02-19 | 淮阴工学院 | Internal and external double-rotor six-suspension-pole switched reluctance motor |
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- 2022-09-26 CN CN202211169872.1A patent/CN115296495A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111953164A (en) * | 2020-09-17 | 2020-11-17 | 淮阴工学院 | Six-suspension-pole internal and external double-rotor type magnetic suspension sheet switch reluctance motor |
| CN212572338U (en) * | 2020-09-17 | 2021-02-19 | 淮阴工学院 | Internal and external double-rotor six-suspension-pole switched reluctance motor |
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Application publication date: 20221104 |
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