CN105896867A - Permanent magnet motor of super-efficient 10-pole 12-slot magnetic steel built-in line-styled rotor structure - Google Patents
Permanent magnet motor of super-efficient 10-pole 12-slot magnetic steel built-in line-styled rotor structure Download PDFInfo
- Publication number
- CN105896867A CN105896867A CN201610372694.0A CN201610372694A CN105896867A CN 105896867 A CN105896867 A CN 105896867A CN 201610372694 A CN201610372694 A CN 201610372694A CN 105896867 A CN105896867 A CN 105896867A
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- Prior art keywords
- magnet steel
- rotor
- groove
- pole
- motor
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
-
- 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
-
- 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
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention provides a permanent magnet motor of a super-efficient 10-pole 12-slot magnetic steel built-in line-styled rotor structure. The motor comprises a stator with 12 teeth-slots and a rotor with 10 rotor poles, wherein the outer contour of a cross section of the rotor is formed through the connection of several sections of arcs, the semi-diameters of the arcs are the same, the centers of the arcs are uniformly distributed on the same circle using the geographic center of the rotor as the center; the inner contour of the cross section of the stator is round, the motor air gap between the stator and the rotor is non-uniform unequal air gap, and the air gap flux density waveform of the motor approaches sine wave; 10 magnetic steel slots are uniformly formed on the rotor, and the magnetic steel is arranged in the magnetic steel slot.
Description
Technical field
The present invention relates to the rare-earth permanent magnet direct current brushless that electric motor car uses, be specifically related to a kind of ultra high efficiency 10 pole 12 groove
The magneto of magnet steel built-in " one " type rotor structure.
Background technology
The rare-earth permanent magnet direct current brushless that electric motor car in the market uses, pole slot fit is 8 pole 12 grooves, rotor
Magnet steel is surface-mount type.The winding coefficient of the motor of this kind of pole slot fit only has 0.866, and the electromagnetic torque causing motor is relatively low；And
And its LMC(number of poles and the least common multiple of groove number) less, there is higher cogging torque in motor, makes motor oscillating and noise relatively
Greatly；Rotor magnetic steel easily causes magnet steel when using surface-mount type assembling broken or adhere to iron filings and cause electric machine chamber-sweeping, and uses
The rotor of this structure magnet steel when high-speed rotation easily flies out, and causes motor all standing accidents caused.8 original pole 12 groove motors
Magnetic links material usage also there is saving optimize space.
Summary of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of ultra high efficiency 10 pole 12 groove magnet steel
The magneto of built-in " one " type rotor structure, is used for solving the problems referred to above of the prior art.
For achieving the above object and other relevant purposes, the present invention provides a kind of ultra high efficiency 10 pole 12 groove magnet steel built-in " "
The magneto of type rotor structure, including:
It is provided with stator and the rotor of 10 rotor poles of 12 teeth groove, wherein,
The cross section outline of described rotor is formed by some sections of circular sliding slopes, and the radius of described each circular arc is equal, each circular arc
The center of circle is uniformly distributed on the same circle with the geometric center of described rotor as the center of circle；The cross section inner outline of described stator is
Circular；Motor gas-gap between described stator and described rotor is the air gap such as not heterogeneous, makes the air gap magnetic density waveform of motor
Close to sinusoidal wave；
It is uniformly arranged 10 magnet steel grooves on described rotor, in described magnet steel groove, magnet steel is set.
Preferably, the maximum of described motor gas-gap is 1.47mm, and minimum of a value is 0.4mm.
Preferably, described magnet steel groove arranges two locating surfaces, and described magnet steel is connected in described magnet steel by described two locating surfaces
In groove.
Preferably, the two ends of described rotor are fixedly installed aluminium alloy cover plate, are used for preventing described magnet steel from throwing away.
It is further preferred that described aluminium alloy cover plate is fixed on the two ends of described rotor by rivet.
Preferably, the cylindrical of described stator arranges some symmetrical trimmings.Improve stock utilization, save cost.
The present invention has following technical effect that
(1) producing level of the size reflection stator winding of motor winding coefficient, the electromagnetic torque of this Relationship of Coefficients to motor is big
Little, the biggest electromagnetic torque of this value is the biggest.The motor winding coefficient that pole slot fit is 10 pole 12 grooves that the present invention uses is 0.933,
Can effectively improve the electromagnetic torque of motor, the torque output of lifting motor, with 48V, 600W, 3000rpm in actual test
As a example by motor, the torque capacity of 10 pole 12 groove motors to exceed 8 pole 12 groove motor about 6N.M, the performance of effective lifting motor.
(2) cogging torque in rare-earth permanent magnet direct current brushless can cause the velocity perturbation of motor, vibration and noise,
When light load and low speed, especially heavy load can be fairly obvious when starting, stall when serious meeting causes electric motor starting.Teeth groove turns
The primitive period number of square is the biggest, and the amplitude of cogging torque is the least, and primitive period number and the groove number of stator and the minimum public affairs of number of poles
Multiple LMC is relevant, and LMC number of the biggest primitive period is the biggest, and cogging torque is the least.Rareearth permanent-magnet DC for 8 pole 12 slot forms
Brushless electric machine, its LMC is 24, but the LMC for 10 pole 12 grooves is 60, can effectively reduce the cogging torque of brushless electric machine,
Reduce the torque ripple of motor, thus reduce the operating vibration of motor and noise.
(3) 10 pole 12 groove motors are in terms of rotor, and front/rear end, compared to 8 traditional pole 12 groove rotors, covers one layer
Aluminium alloy cover plate, is effectively sealed in magnet steel in groove, eliminates the use of magnet steel glue, enormously simplify the assembler of magnet steel
Skill, during preventing rotor from rotating, magnet steel throws away；And rotor outer circle arc is eccentric structure, make motor gas-gap maximum close
1.47mm, close to 0.4mm at minimum, the air gap magnetic density waveform of motor is closer to sine wave, with 48V, 600W, 3000rpm motor
As a example by, the torque ripple of motor reduces 60%, lower noise 3 decibels.
The version of (4) 10 pole 12 groove built-in " one " words, has saved magnet steel consumption, with 30mm length relative to 12 groove 8 poles
As a example by magnet steel, 10 pole 12 groove magnetic steel of motor specifications are 10 3mm × 18mm × 30mm, and 8 pole 12 groove magnetic steel of motor specifications are tile-type 8
Sheet mm × R35.5mm × R39.5mm × 30mm, it can be seen that every, the motor of 10 pole 12 groove built-in " one " word structures can be saved
84.5g magnet steel, it is possible to decrease the production cost of motor；
(5) 10 pole 12 groove motors use stator symmetry trimming, and often volume silicon strip can rush 240 rotor punchings more, are improving material
The manufacturing cost of motor is reduced the most further while material utilization rate.
Make after model machine with original motor performance comparison
Accompanying drawing explanation
Fig. 1 is the rotor structure schematic diagram axonometric drawing of motor of the present invention, situation when being not embedded into magnet steel of display in figure；
Fig. 2 is the rotor structure schematic diagram front view of motor of the present invention, situation when being not embedded into magnet steel of display in figure；
Fig. 3 is the rotor structure schematic diagram axonometric drawing of motor of the present invention, when figure showing band alloy cover plate and is not embedded into magnet steel
Situation；
Fig. 4 is the structural representation axonometric drawing of magnetic links；
Fig. 5 is the stator structure schematic diagram axonometric drawing of motor of the present invention；
Fig. 6 is the stator structure schematic diagram front view of motor of the present invention；
Fig. 7 is partial enlarged drawing；
Fig. 8 is the installation diagram of rotor and stator；
In figure: 1 rotor, 2 stators, 3 aluminium alloy cover plates, 4 magnet steel, 5 motor gas-gaps, 11 circular arcs, 12 magnet steel grooves, 21 teeth groove, 22 right
Claim trimming, 121 locating surfaces, 122 locating surfaces.
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention being described below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
Refer to Fig. 1 to Fig. 8.It should be clear that structure depicted in this specification accompanying drawing, ratio, size etc., the most only in order to coordinate
Content disclosed in specification, understands for those skilled in the art and reads, being not limited to the present invention enforceable
Qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size,
Do not affect under effect that the present invention can be generated by and the purpose that can reach, all should still fall at disclosed technology contents
In the range of containing.Meanwhile, in this specification cited as " on ", D score, "left", "right", " middle " and " one " etc.
Term, be merely convenient to understanding of narration, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or
Adjust, changing under technology contents without essence, when being also considered as the enforceable category of the present invention.
Referring to Fig. 1 to Fig. 8, the present invention provides a kind of ultra high efficiency 10 pole 12 groove magnet steel built-in " one " type rotor structure forever
Magneto, including: it is provided with stator 2 and the rotor 1 of 10 rotor poles of 12 teeth groove, wherein,
The cross section outline 11 of rotor 1 is formed by some sections of circular sliding slopes, and the radius of described each circular arc 11 is equal, each circular arc
The center of circle of 11 is uniformly distributed on the same circle with the geometric center of rotor 1 as the center of circle；The cross section inner outline of stator 2 is
Circular；Motor gas-gap 5 between stator 2 and rotor 1 is the air gap such as not heterogeneous, and the maximum of motor gas-gap is 1.47mm,
Minimum of a value is 0.4mm.The air gap magnetic density waveform of motor is close to sinusoidal wave.
Being uniformly arranged 10 magnet steel grooves 12 on rotor 1, magnet steel groove 12 arranges two locating surfaces 121,122, sets in magnet steel groove 12
Putting magnet steel 4, magnet steel 4 is connected in magnet steel groove 12 by two locating surfaces 121,122.
The two ends of rotor 1 are fixedly installed aluminium alloy cover plate 3, and aluminium alloy cover plate 3 is fixed on the two ends of rotor 1 by rivet.
The cylindrical of stator 2 arranges some symmetrical trimmings 22.Improve stock utilization, save cost.
The principle of above-described embodiment only illustrative present invention and effect thereof, not for limiting the present invention.Any ripe
Above-described embodiment all can be modified under the spirit and the scope of the present invention or change by the personage knowing this technology.Cause
This, have usually intellectual such as complete with institute under technological thought without departing from disclosed spirit in art
All equivalences become are modified or change, and must be contained by the claim of the present invention.
Claims (6)
1. the magneto of ultra high efficiency 10 pole 12 groove magnet steel built-in " " type rotor structure, it is characterised in that including:
It is provided with stator and the rotor of 10 rotor poles of 12 teeth groove, wherein,
The cross section outline of described rotor is formed by some sections of circular sliding slopes, and the radius of described each circular arc is equal, each circular arc
The center of circle is uniformly distributed on the same circle with the geometric center of described rotor as the center of circle；The cross section inner outline of described stator is
Circular；Motor gas-gap between described stator and described rotor is the air gap such as not heterogeneous, and the air gap magnetic density waveform of motor
Close to sinusoidal wave；
It is uniformly arranged 10 magnet steel grooves on described rotor, in described magnet steel groove, magnet steel is set.
The magneto of ultra high efficiency 10 pole 12 groove magnet steel built-in " " type rotor structure the most according to claim 1, it is special
Levying and be: the maximum of described motor gas-gap is 1.47mm, minimum of a value is 0.4mm.
The magneto of ultra high efficiency 10 pole 12 groove magnet steel built-in " " type rotor structure the most according to claim 1, it is special
Levying and be: described magnet steel groove arranges two locating surfaces, described magnet steel is connected in described magnet steel groove by described two locating surfaces.
The magneto of ultra high efficiency 10 pole 12 groove magnet steel built-in " " type rotor structure the most according to claim 1, it is special
Levy and be: the two ends of described rotor are fixedly installed aluminium alloy cover plate, be used for preventing described magnet steel from throwing away.
The magneto of ultra high efficiency 10 pole 12 groove magnet steel built-in " " type rotor structure the most according to claim 4, it is special
Levy and be: described aluminium alloy cover plate is fixed on the two ends of described rotor by rivet.
The magneto of ultra high efficiency 10 pole 12 groove magnet steel built-in " " type rotor structure the most according to claim 1, it is special
Levy and be: the cylindrical of described stator arranges some symmetrical trimmings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610372694.0A CN105896867A (en) | 2016-05-31 | 2016-05-31 | Permanent magnet motor of super-efficient 10-pole 12-slot magnetic steel built-in line-styled rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610372694.0A CN105896867A (en) | 2016-05-31 | 2016-05-31 | Permanent magnet motor of super-efficient 10-pole 12-slot magnetic steel built-in line-styled rotor structure |
Publications (1)
| Publication Number | Publication Date |
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| CN105896867A true CN105896867A (en) | 2016-08-24 |
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| CN201610372694.0A Pending CN105896867A (en) | 2016-05-31 | 2016-05-31 | Permanent magnet motor of super-efficient 10-pole 12-slot magnetic steel built-in line-styled rotor structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711979A (en) * | 2018-07-13 | 2018-10-26 | 广州博捷电机有限公司 | A kind of rotor structure of embedded permanent magnet synchronous motor |
| CN112234736A (en) * | 2020-09-24 | 2021-01-15 | 安徽飞翔电器有限公司 | Super-efficient permanent magnet new energy direct-current brushless energy-saving automobile motor |
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| CN202395540U (en) * | 2011-09-26 | 2012-08-22 | 佛山市南海晶惠普电子科技有限公司 | High-quality three-phase AC permanent magnetic servo synchronous motor |
| CN203104242U (en) * | 2012-10-31 | 2013-07-31 | 毛政祥 | Servo motor |
| CN103427510A (en) * | 2012-05-17 | 2013-12-04 | 深圳市配天电机技术有限公司 | Concentrated-winding motor, generator and motor |
| CN103915926A (en) * | 2014-04-10 | 2014-07-09 | 西北工业大学 | Rotor structure for permanent magnet synchronous motor with triangular-step-shaped permanent magnets |
| CN105245045A (en) * | 2015-11-16 | 2016-01-13 | 苏州西艾杰电机有限公司 | Permanent-magnet embedded type rotor assembly |
| CN105743314A (en) * | 2016-05-06 | 2016-07-06 | 吕三元 | Brushless energy-saving automobile motor of highly efficient new energy rare earth permanent magnet direct-current |
-
2016
- 2016-05-31 CN CN201610372694.0A patent/CN105896867A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202395540U (en) * | 2011-09-26 | 2012-08-22 | 佛山市南海晶惠普电子科技有限公司 | High-quality three-phase AC permanent magnetic servo synchronous motor |
| CN103427510A (en) * | 2012-05-17 | 2013-12-04 | 深圳市配天电机技术有限公司 | Concentrated-winding motor, generator and motor |
| CN203104242U (en) * | 2012-10-31 | 2013-07-31 | 毛政祥 | Servo motor |
| CN103915926A (en) * | 2014-04-10 | 2014-07-09 | 西北工业大学 | Rotor structure for permanent magnet synchronous motor with triangular-step-shaped permanent magnets |
| CN105245045A (en) * | 2015-11-16 | 2016-01-13 | 苏州西艾杰电机有限公司 | Permanent-magnet embedded type rotor assembly |
| CN105743314A (en) * | 2016-05-06 | 2016-07-06 | 吕三元 | Brushless energy-saving automobile motor of highly efficient new energy rare earth permanent magnet direct-current |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711979A (en) * | 2018-07-13 | 2018-10-26 | 广州博捷电机有限公司 | A kind of rotor structure of embedded permanent magnet synchronous motor |
| CN112234736A (en) * | 2020-09-24 | 2021-01-15 | 安徽飞翔电器有限公司 | Super-efficient permanent magnet new energy direct-current brushless energy-saving automobile motor |
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Application publication date: 20160824 |
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