CN111987823A - Super permanent magnet motor device - Google Patents
Super permanent magnet motor device Download PDFInfo
- Publication number
- CN111987823A CN111987823A CN202010786159.6A CN202010786159A CN111987823A CN 111987823 A CN111987823 A CN 111987823A CN 202010786159 A CN202010786159 A CN 202010786159A CN 111987823 A CN111987823 A CN 111987823A
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- China
- Prior art keywords
- permanent magnet
- super
- silicon steel
- rotor
- stator structure
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- 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.)
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- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 27
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 7
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 17
- 238000004804 winding Methods 0.000 abstract description 11
- 230000001133 acceleration Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 230000035515 penetration Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- LPLLVINFLBSFRP-UHFFFAOYSA-N 2-methylamino-1-phenylpropan-1-one Chemical compound CNC(C)C(=O)C1=CC=CC=C1 LPLLVINFLBSFRP-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 240000003023 Cosmos bipinnatus Species 0.000 description 1
- 235000005956 Cosmos caudatus Nutrition 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 241001061076 Melanonus zugmayeri Species 0.000 description 1
- 235000013290 Sagittaria latifolia Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- JJWKPURADFRFRB-UHFFFAOYSA-N carbonyl sulfide Chemical compound O=C=S JJWKPURADFRFRB-UHFFFAOYSA-N 0.000 description 1
- 235000015246 common arrowhead Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
Images
Classifications
-
- 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
- H02K1/141—Stator cores with salient poles consisting of C-shaped cores
-
- 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
-
- 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
- H02K1/2706—Inner rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention relates to the technical field of brushless motors and discloses super permanent magnet motor equipment which comprises a stator structure and a rotor structure penetrating through the stator structure, wherein the stator structure is composed of a circular silicon steel block ring and a silicon steel block, the circular silicon steel block ring and the silicon steel block are axially overlapped and connected into the stator structure with an E-shaped cross section, the rotor structure is formed by overlapping strip-shaped silicon steel blocks in an axial direction, a rare earth magnet thin block is welded on the end face of the rotor structure, and the center of the rare earth magnet thin block is set to be an N pole. The super permanent magnet synchronous motor designed by the invention has the advantages that the rotor has no coil winding, the cost is low, the super permanent magnet synchronous motor can not deform during high-speed operation, the heat loss can be fully dissipated in the stator, the super permanent magnet synchronous motor is suitable for long-time operation, the rotation penetration is small, the acceleration and deceleration are easy, the super energy-saving effect is realized, the super power is realized, the starting torque is large, the high efficiency is realized in a wide rotating speed range, the super permanent magnet synchronous motor is mainly used for mechanical power dragging, such as a new energy electric automobile and the like, and the super.
Description
Technical Field
The invention relates to the technical field of brushless motors, in particular to a device for operating a super permanent magnet motor.
Background
The magnetic poles of the rotor in the brushless motor are single magnetic pole pairs arranged in a radial mode, the working magnetic circuit of the brushless motor is closed along the periphery of the stator through the diameter of the rotor, the magnetic circuit is too long, and the brushless motor cannot be used as a dragging motor due to the limitation of power consumption, so that the super permanent magnet motor device is proposed to solve the problems.
Disclosure of Invention
At present, brushless motors are generally small, and structurally, the permanent magnets on the rotors of the brushless motors are single magnetic pole pairs which are radially arranged, so that a magnetic circuit is long, and the electromagnetic full current law: the invention provides super permanent magnet motor equipment for overcoming the defects of the prior art, wherein the HL is IW, namely the magnetic field intensity H is in direct proportion to ampere turns in a circuit and in inverse proportion to the length L of a magnetic circuit.
In order to achieve the purpose, the invention adopts the following technical scheme:
super permanent-magnet machine equipment, include stator structure and pass stator structure's rotor structure, stator structure comprises circular silicon steel block ring and silicon steel piece, circular silicon steel block ring and silicon steel piece superpose and connect into the stator structure that the cross section is the E type in the axial, rotor structure is fixed in the axial and superposes by bar silicon steel piece, the welding has the thin piece of tombarthite magnet on rotor structure's the terminal surface, the center of the thin piece of tombarthite magnet sets up to the N utmost point.
Preferably, the stator structure has an inner diameter of 250 mm.
Preferably, the silicon steel blocks are punched into an inner three-salient pole shape.
Preferably, both end areas of the rotor structure are the same as the areas of the E-type salient poles of the stator structure.
Preferably, the shape and size of the rare earth magnet thin block are the same as those of the E-shaped salient pole of the corresponding stator structure.
Interpretation of custom terms:
conjugate magnetic pole pair-when the U-shaped or E-shaped electromagnet is opposed to the permanent magnet of the same shape, the electromagnet is excited by direct current to attract or repel the opposed permanent magnet, and this structure is called "conjugate magnetic pole pair";
minister universe magnetic circuit-if the stator and rotor of the motor are regarded as a universe, the ultra-short magnetic circuit which is partially closed between the stator magnetic pole and the rotor permanent magnet is called as a minister universe magnetic circuit.
The invention starts from the motor structure, changes the original brushless motor into an inner rotor type structure, the stator is stamped into an inner six-convex type by silicon steel sheets, the stack thickness is H, the stator is divided into two groups, and the middle parts of the stator are connected by silicon steel sheet rings with the stack thickness of 2H. The rotor is composed of two groups of cross silicon steel sheets with the thickness of H, and an axial magnetized permanent magnet ring with the thickness of 2H is clamped between the two groups of cross silicon steel sheets, so that the three-phase direct current pulse permanent magnet motor is formed.
Fig. 1-2 is a structural schematic diagram of a permanent magnet synchronous motor, wherein under the excitation of three-phase pulse, a coil winding on a stator is close to magnetic lines of force between a U-shaped magnetic pole on the stator and a magnetic pole pair on a rotor in the axial direction, so as to form a magnetic circuit in the form of a "cosmos", and the rotor forms four pairs of force couples and synchronously rotates under the action of a rotating magnetic field;
an alternative to the super permanent magnet synchronous motor is shown in fig. 3-4, which is an E-type inner rotor type suitable for medium and small power machines.
Compared with the prior art, the invention provides the super permanent magnet motor equipment, which has the following beneficial effects:
1. the motor rotor has no coil winding, so that the cost is low, and the motor rotor does not deform during high-speed operation;
2. the heat is dissipated at the stator, so that the heat is fully dissipated, and the motor is suitable for long-term operation;
3. the rotation penetration is small, and acceleration and deceleration are easy;
4. the energy is saved, the power is strong, and the starting torque is large;
5. the high-efficiency motor has high efficiency in a wide rotating speed range, is mainly used for mechanical power dragging, such as new energy electric automobiles and the like, and is particularly suitable for the aerospace field such as unmanned aerial vehicles and the like.
Drawings
FIG. 1 is a schematic structural diagram of a three-phase U-shaped inner rotor super permanent magnet synchronous motor provided by the invention;
FIG. 2 is a schematic structural view of a B-B section of a three-phase U-shaped inner rotor super permanent magnet synchronous motor provided by the invention;
FIG. 3 is a schematic structural diagram of an E-type inner rotor super permanent magnet synchronous motor according to the present invention;
fig. 4 is a schematic structural view of the section a-a of the E-type inner rotor super permanent magnet synchronous motor according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "conjugate pole pair," "cosmic magnetic circuit," "axial magnetization," and the like are used merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Referring to fig. 3-4, the super permanent magnet motor device comprises a stator structure and a rotor structure penetrating through the stator structure, wherein the stator structure is composed of a circular silicon steel block ring and a silicon steel block, the circular silicon steel block ring and the silicon steel block are axially overlapped and connected into the stator structure with an E-shaped cross section, the rotor structure is axially fixed and overlapped by strip-shaped silicon steel blocks, a rare earth magnet thin block is welded on the end face of the rotor structure, and the center of the rare earth magnet thin block is set to be an N pole.
In this embodiment, the inner diameter of the stator structure is 250 mm, the silicon steel block is stamped into one of an inner three-salient pole shape and an inner six-salient pole shape, the area of two end faces of the rotor structure is the same as that of an E-type salient pole of the stator structure, and the size of the rare earth magnet thin block is the same as that of the corresponding E-type salient pole of the stator structure.
The necessary technical characteristics of the super permanent magnet synchronous motor and the common brushless permanent magnet motor are as follows: the basic structure of the common motor, such as a shell, a stator, a rotor, a bearing, a fan and the like, does not need carbon brushes, so that the rotor does not have an armature and needs pulse code driving.
The super permanent magnet synchronous motor has the remarkable technical characteristics that:
the stator salient poles and the rotor magnetic poles are both U-shaped or E-shaped, and a 'conjugate magnetic pole pair' structure must be symmetrically formed on the structure, which is a necessary condition for creating a 'minister' magnetic circuit and is the core technology of the super permanent magnet synchronous motor.
The super permanent magnet synchronous motor can be an inner rotor or an outer rotor.
The appearance shape of the super permanent magnet synchronous motor is drum-shaped, and the super permanent magnet synchronous motor has the axis fixing property of a gyroscope during high-speed rotation.
As shown in fig. 1-2, there are four inductor windings for each phase on the stator, taking phase a as an example: a ≈ indicates that the positive current of the phase winding generates repulsion to the rotor through the magnetism generated by the phase winding; a' ↓ indicates the winding is magnetically attracted to the rotor (the other phases are also true); a ↓toa' ×) indicates that the two windings are connected in series, and the motor rotates clockwise when the two windings are connected as follows:
phase I: a ↓ -A' ↓ -C ↓;
phase II: c ↓ -C '↓ -B' ↓;
phase III: b ↓ -B '. radical ↓ -A'. radical;
the three groups are respectively connected with three-phase pulse driving output ends.
As shown in fig. 3-4, according to a ↓; c ↓; b ↓ -A ↓, the inner rotor rotates clockwise;
inductance coils wound by double-color enameled wires are arranged on the three E-type salient pole central iron cores,
the arrow tail indicates that the positive electrode is in current, the arrow head is the negative end and is also in the current flowing direction, and according to the right-hand spiral rule, the four-finger slave
Further | go out, the direction of thumb is the N utmost point, polarity and rotor center magnetic pole N at this moment are like one pole repulsion, opposite sex attract, one for every phase, winding repulsion is recorded ↓, another winding attraction is recorded ↓, as shown in the figure, if press A ↓seriesconnection C ↓, that the group coil that A produced repulsion and C produced attraction is connected in series with one group coil and is connected one phase pulse, C ± -B ↓, connect the second phase, B × -A ↓isconnected the third phase, under the effect of three-phase chronogenesis pulse, the stator produces clockwise rotating magnetic field and makes the rotor synchronous revolution, so no matter U type stator structure or E type stator structure all should be in the protection scope.
Compared with the traditional permanent magnet motor, the super permanent magnet motor has super short working magnetic circuit, so that the magnetic field intensity is strong, the energy is saved, the rotating diameter of the rotor of the motor can be increased, and the torque can be increased.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. Super permanent-magnet machine equipment, include stator structure and pass stator structure's rotor structure, its characterized in that, stator structure comprises circular silicon steel block ring and silicon steel piece, circular silicon steel block ring and silicon steel piece superpose and connect into the stator structure that the cross section is the E type in the axial, rotor structure is fixed in the axial and superposes by bar silicon steel piece, the welding has the thin piece of tombarthite magnet on rotor structure's the terminal surface, the center of the thin piece of tombarthite magnet sets up to the N utmost point.
2. The super permanent magnet machine apparatus of claim 1 wherein the stator structure has an inner diameter of 250 mm.
3. The super permanent magnet machine apparatus of claim 1, wherein the silicon steel blocks are stamped in an inner three-salient shape.
4. The super permanent magnet machine apparatus of claim 1, wherein both end areas of the rotor structure are the same as the areas of the E-salient poles of the stator structure.
5. The super permanent magnet machine apparatus of claim 1, wherein the rare earth magnet slabs are of the same shape and size as the E-salient poles of the corresponding stator structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010786159.6A CN111987823A (en) | 2020-08-07 | 2020-08-07 | Super permanent magnet motor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010786159.6A CN111987823A (en) | 2020-08-07 | 2020-08-07 | Super permanent magnet motor device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111987823A true CN111987823A (en) | 2020-11-24 |
Family
ID=73446050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010786159.6A Pending CN111987823A (en) | 2020-08-07 | 2020-08-07 | Super permanent magnet motor device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111987823A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201008124Y (en) * | 2007-01-31 | 2008-01-16 | 刘建平 | Brushless straight-through permanent-magnet DC electric machine |
| CN101588119A (en) * | 2009-06-25 | 2009-11-25 | 西安交通大学 | Magnetism-gathering transverse magnetic field motor with claw-pole type stator |
| CN205647062U (en) * | 2016-05-30 | 2016-10-12 | 上海鼎特电器有限公司 | Motor core's structure |
| CN205754070U (en) * | 2016-06-08 | 2016-11-30 | 淮阴工学院 | A five-degree-of-freedom magnetic levitation motor with an integrated structure |
-
2020
- 2020-08-07 CN CN202010786159.6A patent/CN111987823A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201008124Y (en) * | 2007-01-31 | 2008-01-16 | 刘建平 | Brushless straight-through permanent-magnet DC electric machine |
| CN101588119A (en) * | 2009-06-25 | 2009-11-25 | 西安交通大学 | Magnetism-gathering transverse magnetic field motor with claw-pole type stator |
| CN205647062U (en) * | 2016-05-30 | 2016-10-12 | 上海鼎特电器有限公司 | Motor core's structure |
| CN205754070U (en) * | 2016-06-08 | 2016-11-30 | 淮阴工学院 | A five-degree-of-freedom magnetic levitation motor with an integrated structure |
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| PB01 | Publication | ||
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Application publication date: 20201124 |