CN107529682A - A kind of high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range - Google Patents
A kind of high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range Download PDFInfo
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 51
- 239000003292 glue Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
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Abstract
The present invention discloses a kind of high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range, including stator module, rotating shaft and rotor core, axis of rotation is installed on stator module, rotor core is fixedly installed in rotating shaft, the high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range also includes some permanent magnets for being fixed on rotor core, the quantity of some permanent magnets is even number, a magnetic pole is formed per 2n permanent magnet, the magnetic bridge formed by rotor core between 2n permanent magnet be present makes each magnetic pole form segmental structure, 2n permanent magnet is arranged in ∧ shapes, increasing the magnetic flux area of permanent magnet increases the ψ f of motor, ensure quadrature axis magnetic path width again, improve Lq；Meanwhile the design of ∧ shapes solves requirement of the conventional internal magneto to rotor core space so that rotor core endoporus is amplified, to meet the needs of electro spindle axle center placing broaches mechanism.
Description
Technical field
The present invention relates to motor, more particularly, to a kind of high-speed electric main shaft permanent magnet synchronous electric of broad and constant power speed adjustable range
Machine.
Background technology
Electro spindle develops towards the direction of broad and constant power speed adjustable range, to meet that client slightly adds in the big torque of the slow-speed of revolution
Work, the precision machined demand of the high high invariable power of rotating speed.Built-in type asynchronous machine still occupies main flow used by electro spindle at present,
But the following characteristic that asynchronous machine is inherently present governs it and developed to higher stratum：1. rotor heating is serious during low speed, by
This caused rotating shaft thermal stretching will directly affect the machining accuracy of lathe；2. rotor parameter changes with temperature, control is also easy to produce
Error, influence the control accuracy of motor；3. power factor (PF) and efficiency are low, it is desirable to configure larger inverter capacity；4. power (turns
Square) density is low, and motor volume is big；5. the response time is slow, Acceleration and deceleration time length, machine tooling efficiency is influenceed.For problem above,
A kind of motor of new construction is needed badly to solve.Permagnetic synchronous motor have simple in construction, loss is small, power factor (PF) is high, efficiency high,
The series of advantages such as fast response time, can the perfect deficiency for solving above-mentioned induction machine.
But there is following defect in existing permanent magnet synchronous electric equipment：
The magnetic field of permagnetic synchronous motor can not be adjusted as caused by permanent magnet, and permagnetic synchronous motor has back-emf basic
Upper and directly proportional rotating speed characteristic, works as U=UlimWhen, due to the limitation of inverter capacity, machine winding can not input current again.
Want to continue to raise rotating speed, only by adjusting idAnd iqTo realize, by increasing motor idComponent and reduction iqComponent, to maintain
Balance of voltage relation.But the electric current that motor can be born has the limit, increases demagnetizing current component and ensures armature simultaneously
Electric current is no more than current limit value, and torque current is just corresponding to be reduced, thus can not maintain output-constant operation in high speed.Permanent magnetism is same
This defect of step motor seriously limits further applying for it.Therefore, the invariable power fortune of permagnetic synchronous motor how is extended
Line range, have become an important topic of permagnetic synchronous motor.In addition, the torque ripple of permagnetic synchronous motor can cause electricity
The vibration of main shaft and noise, and then the crudy of lathe is influenceed, for requiring to be operated in the electricity master at a high speed, under high-accuracy state
Axle needs strongly to suppress its torque ripple.
The content of the invention
For overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of high speed of broad and constant power speed adjustable range
Electro spindle permagnetic synchronous motor.
The purpose of the present invention is realized using following technical scheme：
A kind of high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range, including stator module, rotating shaft and turn
Sub- iron core, the axis of rotation are installed on the stator module, and the rotor core is fixedly installed in the rotating shaft, described wide permanent
The high-speed electric main shaft permagnetic synchronous motor of power speed control scope also includes some permanent magnets for being fixed on the rotor core, institute
The quantity for stating some permanent magnets is even number, and per 2n, a permanent magnet forms a magnetic pole, exists between the 2n permanent magnet
The magnetic bridge formed by the rotor core makes each magnetic pole form segmental structure, and the 2n permanent magnet is arranged in ∧ shapes.
Further, 2n permanent magnet corresponding to each magnetic pole has a polar arc, the center of circle of the polar arc with it is described
The inner circle center of circle of stator module is misaligned, the inner circle of the polar arc and the stator module air gap is present, and the air gap is along pole
Arc center line both sides to the polar arc end gradually increases.
Further, the center of circle of the polar arc and the inner circle circle center distance of the stator module are 3mm-8mm.
Further, by circular sliding slopes, the center of circle of the circular arc and the inner circle of the stator module between two neighboring pole arc
The center of circle overlaps.
Further, each magnetic pole by two set of permanent magnets into the distance between described two permanent magnet is described
The width of magnetic bridge, the magnetic bridge width are 0.5mm to 1/3rd of the permanent magnet width.
Further, distance of each permanent magnet close to described polar arc center line one end and the rotating shaft edge is
The height of the magnetic bridge, the magnetic bridge are highly 1-3mm.
Further, the magnetic bridge width between two magnetic pole is 1.5mm-3mm, and the magnetic bridge is highly 1.8mm-
2.5mm。
Further, the rotor core is provided with mounting hole, and each permanent magnet is fixedly installed in described by glue
Mounting hole.
Further, the glue is high-strength bi-component epoxy cement glue.
Further, the gap of the permanent magnet and the mounting hole uses epoxide resin vacuum embedding.
Compared with prior art, the high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range of the present invention has following
Beneficial effect：
(1) magnetic pole is formed per 2n permanent magnet, the magnetic bridge formed by rotor core be present between 2n permanent magnet makes often
One magnetic pole forms segmental structure, and 2n permanent magnet be arranged in ∧ shapes, increases the magnetic flux area of permanent magnet to increase the ψ f of motor, again
Ensure quadrature axis magnetic path width, improve Lq；Meanwhile the design of ∧ shapes solves conventional internal magneto to rotor core space
It is required that so that rotor core endoporus is amplified, to meet the needs of electro spindle axle center placing broaches mechanism；
(2) waveform of air-gap field is improved by the design of non-uniform gap so that what permanent magnet was formed in air gap
Magnetic field is approximately sine, largely reducing various harmonic fields, reduces the electromagnetic noise of motor, is reduced by harmonic wave magnetic
Iron loss caused by, reduces the temperature rise of motor, ensure that the high-performance of motor.
(3) vacuum encapsulation technology casting epoxy resin is used with further in the gap of permanent magnet and permanent magnet mounting hole
Fixed permanent magnet, prevent permanent magnet from occurring wriggling in high-speed cruising and cause adhesive failure and conduct heat caused by permanent magnet
And eliminate rotor and rotate at a high speed and cause gas to be uttered long and high-pitched sounds.
Brief description of the drawings
Fig. 1 is a structural representation of the high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range of the present invention；
Fig. 2 is another structural representation of the high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range of the present invention
Figure；
Fig. 3 is the air-gap field schematic diagram of square wave；
Fig. 4 is the air-gap field schematic diagram of trapezoidal wave.
In figure：100th, the high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range；1st, rotating shaft；2nd, rotor iron
Core；3rd, permanent magnet；4th, mounting hole；5th, epoxy resin；6th, stator module.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
It should be noted that when component is referred to as " being fixed on " another component, it can be directly on another component
Or there may also be component placed in the middle.When a component is considered as " connection " another component, it can be directly connected to
To another component or it may be simultaneously present component placed in the middle.When a component is considered as " being arranged at " another component, it
Can be set directly on another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical
", " horizontal ", "left", "right" and similar statement for illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
Fig. 1 to Fig. 2 is referred to, a kind of high-speed electric main shaft permagnetic synchronous motor 100 of broad and constant power speed adjustable range includes
Rotating shaft 1, rotor core 2, some permanent magnets 3 and stator module 6.Rotor core 2 is provided with some mounting holes 4, the number of mounting hole 4
It is all mutually 2P × 2n to measure with the quantity of permanent magnet 3, and wherein P is the number of pole-pairs of motor, and n is natural number.Some mounting holes 4 along turn
The circumferential direction arrangement of sub- iron core 2.Rotor core 2 is fixed on rotating shaft 1.The rectangular in cross-section of permanent magnet 3.Each parallel magnetization
In corresponding each mounting hole 4 opened up embedded in rotor core 2 of the permanent magnet 3 of square-section, and use high-strength bi-component
Epoxy cement glue is adhesively fixed with rotor core 2, while uses vacuum encapsulation work in the gap of permanent magnet 3 and mounting hole 4
Skill casting epoxy resin 5 prevents permanent magnet 3 from occurring wriggling in high-speed cruising and causing to be bonded with further fixed permanent magnet 3
Failing and conducting heat caused by permanent magnet 3 and eliminate rotor and rotate at a high speed causes gas to be uttered long and high-pitched sounds；Each magnetic pole of rotor by
2n blocks permanent magnet 3 is arranged in the magnetic pole form of ∧ shapes, is isolated between ∧ shape magnetic poles using magnetic bridge 1, every magnetic pole is formed segmental structure；
Each magnetic pole of rotor is evenly distributed on the circumference of rotor core, the folder formed between two row's permanent magnets 3 of ∧ shape magnetic poles
The summit at angle is backwards to the center for being directed at rotor core 2.
Please continue to refer to Fig. 2, polar arc radius corresponding to each pair permanent magnet 3 makes the inner circle radius less than stator module 6, and
And two circular arc center of circle O, O' is misaligned, so that having minimal air gap δ at polar arc centermin, along the side direction of polar arc center line two
Air gap gradually increases to δmax, the circular arc center of circle and the stator inner circle center of circle between adjacent polar arc overlap.
Wherein：
Di1The internal diameter of-stator module 6；
D2The internal diameter of-rotor core 2；
δmax- maximum air gap；
δmin--- minimal air gap；
The center of circle of O --- stator module 6；
O ' --- the off-centre operation center of circle；
T --- eccentric throw；
θe--- the span angle of magnetic pole half；
B1 --- magnetic bridge 1 is wide；
B2 --- magnetic bridge 1 is high；
B3 --- magnetic bridge 2 is wide；
B4 --- magnetic bridge 2 is high.
In the present embodiment, the quantity of permanent magnet 3 is 8, number of magnetic poles 4.The structure of 4 poles has been integrally formed in rotor；Institute
State stator module 6 and be analogous to ordinary three-phase synchronous, employ the form of 36 grooves, winding configuration is that double-deck short distance lap wound is set
Meter；The integer slot form of the groove of 4 pole 36 is integrally formed in the motor.
Please continue to refer to Fig. 3 and Fig. 4, principle is as follows when permagnetic synchronous motor works：
First:Permagnetic synchronous motor realizes the principle of weak magnetic control.
The voltage equation of permagnetic synchronous motor is as follows：
In formula:U --- limiting voltage；
ω --- angular rate；
Lq --- quadrature axis inductance；
Iq --- electric current quadrature axis component；
Ld --- d-axis inductance；
Id --- it is electric current direct-axis component；
Ψ f --- permanent magnet flux linkage.
When permanent magnet synchronous generator actuated by weak field, in the case where terminal voltage reaches the limit values, electric current reaches the limit values, it
The condition of any high speed, which can be run to, is：ψ f=Ld*ilim[2] in formula:ilim--- current limit value.
In fact, due to the larger permanent magnet of magnetic resistance be present on permagnetic synchronous motor d-axis magnetic circuit so that the d-axis of motor
Inductance can not be done greatly, and therefore the relation of [2] formula is difficult to reach.For the permagnetic synchronous motor of reality, usual ψ f>>Ld*ilim, by
The main method that this maximum speed that can be seen that raising permagnetic synchronous motor can be taken has：Reduce magnetic linkage ψ f；Increase ilim；Increase
Big Ld；Improve motor limiting voltage u；Using the combination of preceding four kinds of methods；
And improve motor limiting voltage and carrying current will certainly in increase system inverter capacity, be so as to improve
The manufacturing cost of system.Therefore adopt by some way to reduce permanent magnet flux linkage ψ f and increase d-axis inductance Ld, be allowed to meet or approach
Relation shown in formula [2], it is more satisfactory permagnetic synchronous motor " weak magnetic " expansion speed measure.
Second：The principle that the requirement source of back-emf sine and cogging torque suppress.
Speed governing permagnetic synchronous motor all uses inverter supply, and modern frequency converter almost all uses SPWM (sine waves
Pulsewidth modulation) output voltage wave, it be using standard sine wave with triangular wave is modulated forms, SPWM output voltage waveforms
In low-order harmonic sum be zero, i.e., SPWM output voltage is the sine wave of a standard.If it can ensure that motor is becoming
During speed, its back-emf keeps (the aberration rate control of the relative fundamental wave of its harmonic content sum of good approach degree with SPWM all the time
System is within 5%), you can ensure the sine ratio of armature supply, which solves the torque pulsation problem of permagnetic synchronous motor.
It was found from the law of electromagnetic induction, to make winding back emf waveform sinusoidal, be how to make generation back-emf in fact
The problem of field waveform sine.For permagnetic synchronous motor, the selection of rotor permanent magnet structure type can be mainly summarized as；Main magnetic
The selection of pole pole embrace；Several aspects such as non-uniform gap.
2.1 permanent-magnetic synchronous motor rotor magnet structure formal characters：
The magnetic pole form of permagnetic synchronous motor is varied, and the direction encouraged by permanent magnet is divided into warp-wise structure and tangential knot
Structure, it is divided into surface-mount type and built-in by installation form,
The built-in structure type of the present embodiment selection radial direction, the permanent magnet 3 of the structure are embedded in inside rotor core 2,
The centrifugation protection that rotor core 2 is naturally run at high speed to permanent magnet 3, makes it possible that motor is realized at a high speed；Simultaneously should
Structure is applied in the less occasion of number of magnetic poles, using the teaching of the invention it is possible to provide higher magnetic flux area, so as to improve the energy storage in magnetic field, motor work(
Rate density gets a promotion；In addition, the built-in Lq ＞ Ld for generally causing motor of radial direction, according to the theory of [1] formula, when motor is transported
Row controls the phase of electric current in armature winding, makes magnetic in the direction permanent magnet adjacent thereto of magnetic flux in magnetic bridge when base speed is following
Logical direction is identical, can also so increase ψ f, so as to have the function that to be lifted torque, namely the magnetic of magneto built in performance
Resistive torque.
The selection of 2.2 permagnetic synchronous motor main pole pole embraces：
According to motor theory, square wave Distribution of Magnetic Field shown in Fig. 3 resolves into the mathematics of each harmonic with Fourier series
Expression formula is：
In formula：
Bm--- air gap flux density amplitude；
K --- odd number；
Influence of certain subharmonic to counter potential waveform is eliminated by selecting appropriate pole embrace, is permagnetic synchronous motor
A big advantage.By adjusting the size of leakage field and selecting suitable pole embrace, make air-gap field waveform in the standard shown in Fig. 3
When trapezoidal wave is distributed, then the mathematic(al) representation that space each harmonic is resolved into Fourier series is changed into：
In formula：α --- the half at-main pole pole span short distance angle, α ≠ 0；
Find that [4] are [3] by comparing [3] and [4]Times, that is to say, that fundamental wave only weakens
Times,When it is approximately 1, and be reduced to 1/k times of [3] formula to each harmonic, and completely can by make k α=
π eliminates a certain specific harmonic wave.
It was found from electric machine theory, it can be eliminated by 3 odd harmonics divided exactly by the connection of three-phase symmetric winding, in electricity
The improvement of 5 times and 7 subharmonic is most concerned with the design of machine, therefore, preferably selection is：α=π/5~π/7 [5]
It is corresponding with α to have another expression-form for permagnetic synchronous motor：In formula：
bi- main pole polar arc width；
τ-pole span,
αi- the effective pole arc coefficients；
Di1- diameter of stator bore；
P-motor number of pole-pairs；
From [5]：
2.3 non-uniform gap
The implementation method of permagnetic synchronous motor back-emf sineization also has skewed slot or oblique pole, built-in general more options skewed slot
Mode, but skewed slot adds the difficulty of manufacturing process, while can cause the decline of output torque, and the present embodiment is not using
Even air gap, the magnetic conductance by changing air gap make the square wave air-gap field in Fig. 3 be intended to sinusoidalization.
Based on above theory analysis, to obtain the broad and constant power speed governing model suitable for high-speed high-precision electro spindle duty requirements
The permagnetic synchronous motor enclosed, the present embodiment change the mode that every magnetic pole of routine is made up of a monoblock permanent magnet 3,
Overall permanent magnet 3 is divided into 2n blocks permanent magnet 3, and magnetically permeable magnetic bridge is provided between permanent magnet 3, and its width is b1, (b1=
Between 0.5mm~L/3mm, wherein L is the width of every piece of square-section permanent magnet 3).Magnetic bridge has two effects, first, improving
The structural strength of rotor, second, the magnetic flux that adjustment passes through from magnetic bridge, and then adjust the weak magnetic control range of motor；N is not herein
It is the bigger the better, as n ＞ 3, weak magnetic width amplification is eased up, and motor output torque is decayed rapidly in this example.
The present embodiment increases the ψ of motor ∧ shapes are lined up per pole permanent magnet by increasing the magnetic flux area of permanent magnet 3
F, ensure quadrature axis magnetic path width again, improve Lq；Meanwhile the design of ∧ shapes solves conventional internal magneto to rotor core 2
The requirement in space so that the endoporus D2 of rotor core 2 is amplified, to meet the needs of electro spindle axle center placing broaches mechanism, this
Place size b2 design is very crucial, and the influence to motor performance is very notable, in this case between b2=1mm~3mm；
The present embodiment is by controlling main pole polar arc width biEliminate 5 times and 7 subharmonic of air-gap field so that anti-electricity
Gesture tends to sinusoidalization.In force, θeWith biThere is strict corresponding relation, this case is by controlling θeSubtended angle realize biIt is excellent
Choosing, θe=30 °~40 °；
The present embodiment improves the waveform of air-gap field by the design of non-uniform gap so that permanent magnet is in air gap
The magnetic field of formation is approximately sine, largely reducing various harmonic fields, reduces the electromagnetic noise of motor, reduce by
Iron loss caused by harmonic field, the temperature rise of motor is reduced, ensure that the high-performance of motor.Between respectively being measured according to figure 2 above
Geometrical relationship, it can be deduced that the mathematic(al) representation [9] of eccentric throw t during air-gap field Sine distribution：
Modern electrical machine design is accurately calculated to draw by electromagnetic finite element more for t value, t=3mm in this case
Between~8mm；B3 value mainly from consider rotor structure intensity angle, in this case between b3=1.5mm~3mm；
B4 value is very exquisite, and it had both been related to the electromagnetic performance of motor, is related to the mechanical strength of motor, b4=in this case again
Between 1.8mm~2.5mm；The control range of above-mentioned size by rotor core endoporus D2 andLimitation, D2=in this case
36,Between.
The present invention uses above-mentioned design, brings following beneficial effect：
1. permagnetic synchronous motor is applied and uses asynchronous machine conduct with electro spindle, instead of traditional electro spindle by the present invention
The scheme of driving source, solves when electro spindle uses asynchronous machine low speed that rotor heating is serious, resulting rotating shaft thermal stretching
The machining accuracy of lathe will be directly affected；Rotor parameter changes with temperature, and is also easy to produce control error, influences the control essence of motor
Degree；Power factor (PF) and efficiency are low, it is desirable to configure larger inverter capacity；Power (torque) density is low, and motor volume is big；Response
Time is slow, Acceleration and deceleration time length, a series of problems, such as influenceing machine tooling efficiency；
2. the magnetic pole arrangement form using ∧ shapes of the invention, both ensure that permanent magnet 3 can provide enough magnetic
Logical area, meeting electro spindle again needs the demand of larger aperture placing broaches mechanism with rotor；
3. the present invention is according to theory analysis, with reference to Finite-element Analysis in Electromagnetic Fields determine optimal main pole polar arc width and
Eccentric throw, makes the back-emf of motor tend to sinusoidalization, so as to inhibit the torque ripple of motor, ensure that the processing essence of electro spindle
Degree.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
Corresponding change and deformation, and all these changes and deformation should all belong to the protection domain of the claims in the present invention
Within.
Claims (10)
1. a kind of high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range, including stator module, rotating shaft and rotor
Iron core, the axis of rotation are installed on the stator module, and the rotor core is fixedly installed in the rotating shaft, and its feature exists
In：The high-speed electric main shaft permagnetic synchronous motor of the broad and constant power speed adjustable range is also fixed on the rotor core including some
Permanent magnet, the quantity of some permanent magnets is even number, and per 2n, a described permanent magnets form a magnetic pole, the 2n permanent magnetism
The magnetic bridge formed by the rotor core between body be present makes each magnetic pole form segmental structure, the 2n permanent magnet row
Arrange into ∧ shapes.
2. the high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range according to claim 1, its feature exist
In：2n permanent magnet corresponding to each magnetic pole has a polar arc, the center of circle of the polar arc and the inner circle of the stator module
The center of circle is misaligned, the inner circle of the polar arc and the stator module air gap is present, the air gap along polar arc center line both sides extremely
The polar arc end gradually increases.
3. the high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range according to claim 2, its feature exist
In：The center of circle of the polar arc and the inner circle circle center distance of the stator module are 3mm-8mm.
4. the high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range according to claim 2, its feature exist
In：Overlapped between two neighboring pole arc by circular sliding slopes, the center of circle of the circular arc with the inner circle center of circle of the stator module.
5. the high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range according to claim 2, its feature exist
In：Each magnetic pole is by two set of permanent magnets into the distance between described two permanent magnet is the width of the magnetic bridge, described
Magnetic bridge width is 0.5mm to 1/3rd of the permanent magnet width.
6. the high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range according to claim 5, its feature exist
In：Distance of each permanent magnet close to described polar arc center line one end and the rotating shaft edge is the height of the magnetic bridge
Degree, the magnetic bridge is highly 1-3mm.
7. the high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range according to claim 5, its feature exist
In：Magnetic bridge width between two magnetic pole is 1.5mm-3mm, and the magnetic bridge is highly 1.8mm-2.5mm.
8. the high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range according to claim 1, its feature exist
In：The rotor core is provided with mounting hole, and each permanent magnet is fixedly installed in the mounting hole by glue.
9. the high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range according to claim 8, its feature exist
In：The glue is high-strength bi-component epoxy cement glue.
10. the high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range according to claim 9, its feature exist
In：The gap of the permanent magnet and the mounting hole uses epoxide resin vacuum embedding.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108718145A (en) * | 2018-08-30 | 2018-10-30 | 沈阳工业大学 | A kind of permasyn morot weakening interior permanent magnet machines cogging torque |
| DE102019135896A1 (en) * | 2019-12-30 | 2021-07-01 | Hiwin Mikrosystem Corp. | Permanent magnet spindle motor |
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| CN102355108A (en) * | 2011-09-26 | 2012-02-15 | 佛山市南海晶惠普电子科技有限公司 | High-quality three-phase alternating current permanent magnet servo synchronous motor |
| CN204103619U (en) * | 2014-07-31 | 2015-01-14 | 比亚迪股份有限公司 | Motor and the motor assembly with this motor |
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| CN106169823A (en) * | 2016-07-08 | 2016-11-30 | 宁波欣达电梯配件厂 | A kind of rotor sheet of permanent magnet motor assembly unit and assembled rotor |
| CN106487133A (en) * | 2015-09-02 | 2017-03-08 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of motor and its rotor |
| CN207021877U (en) * | 2017-07-18 | 2018-02-16 | 广州市昊志机电股份有限公司 | A kind of high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range |
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| CN102355108A (en) * | 2011-09-26 | 2012-02-15 | 佛山市南海晶惠普电子科技有限公司 | High-quality three-phase alternating current permanent magnet servo synchronous motor |
| CN204103619U (en) * | 2014-07-31 | 2015-01-14 | 比亚迪股份有限公司 | Motor and the motor assembly with this motor |
| CN204271774U (en) * | 2014-08-04 | 2015-04-15 | 北京超同步伺服股份有限公司 | A kind of high-speed permanent magnetic electro spindle inner electric machine rotor punching structure |
| CN204316210U (en) * | 2014-12-06 | 2015-05-06 | 大洋电机新动力科技有限公司 | The permagnetic synchronous motor of a kind of rotor and application thereof |
| CN106487133A (en) * | 2015-09-02 | 2017-03-08 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of motor and its rotor |
| CN106169823A (en) * | 2016-07-08 | 2016-11-30 | 宁波欣达电梯配件厂 | A kind of rotor sheet of permanent magnet motor assembly unit and assembled rotor |
| CN207021877U (en) * | 2017-07-18 | 2018-02-16 | 广州市昊志机电股份有限公司 | A kind of high-speed electric main shaft permagnetic synchronous motor of broad and constant power speed adjustable range |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108718145A (en) * | 2018-08-30 | 2018-10-30 | 沈阳工业大学 | A kind of permasyn morot weakening interior permanent magnet machines cogging torque |
| CN108718145B (en) * | 2018-08-30 | 2024-03-19 | 沈阳工业大学 | Permanent magnet synchronous motor for weakening cogging torque of built-in permanent magnet motor |
| DE102019135896A1 (en) * | 2019-12-30 | 2021-07-01 | Hiwin Mikrosystem Corp. | Permanent magnet spindle motor |
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