CN207442668U - A kind of novel permanent magnetic synchronous motor of antisymmetry structure type - Google Patents
A kind of novel permanent magnetic synchronous motor of antisymmetry structure type Download PDFInfo
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- CN207442668U CN207442668U CN201721363652.7U CN201721363652U CN207442668U CN 207442668 U CN207442668 U CN 207442668U CN 201721363652 U CN201721363652 U CN 201721363652U CN 207442668 U CN207442668 U CN 207442668U
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- rotor
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- antisymmetry
- structure type
- motor
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The utility model discloses a kind of novel permanent magnetic synchronous motors of antisymmetry structure type, including stator and rotor, the stator sleeve is in the outside of rotor, the stator and rotor coaxial, and there are air gaps therebetween, it is provided with the V-shape magnetic slot of multiple antisymmetry structures in the iron core of the rotor, magnet steel is respectively by N poles S interpolars every being embedded in the V-shape magnetic slot of the rotor core；The novel permanent magnetic synchronous motor of a kind of antisymmetry structure type provided by the utility model, on the one hand, improve the waveform of air gap flux density, reduce cogging torque and torque pulsation；On the other hand, radial electromagnetic force suffered by stator tooth is improved so that teeth portion is more uniformly stressed, and reduces the amplitude of radial electromagnetic force, effectively reduces the vibration and noise of motor on the whole.
Description
Technical field
The utility model is related to a kind of novel permanent magnetic synchronous motors of antisymmetry structure type.
Background technology
Cogging torque (Cogging torque) is the intrinsic phenomenon of magneto, it is cold in armature winding
Under state, the torque of circumferencial direction generation is acted on the tooth socket of armature core by the magnetic field that permanent magnet generates.Its generation comes
From the tangential force between permanent magnet and armature tooth, make the rotor of permanent magnet motor have one kind along a certain specific direction and stator
The trend of alignment, it is intended to by rotor fixed position in some positions, a kind of oscillating torque that thus trend generates.
Cogging torque can fluctuate motor torque, generate vibration and noise, the fluctuation of speed occur, prevent motor from steadily transporting
Row influences the performance of motor.Motor is made to generate undesirable vibration and noise simultaneously.In variable speed drives, when torque pulsation frequency
When rate is consistent with the mechanical resonance frequency of stator or rotor, vibration and noise that cogging torque generates will be amplified.Cogging torque
Presence equally affect high accuracy positioning in low-speed performance and position control system of the motor in speed control system.
Permanent magnet synchronous motor extensive concern due to the advantages that its power density height, high efficiency, adjustable power factor.But
The vibration noise of generation is also increasingly to cause concern, and torque pulsation caused by the variation of permanent magnet synchronous motor cogging torque is production
The key factor of raw vibration noise.Present invention proposes a kind of a kind of New-type electric machine knots for weakening cogging torque and torque pulsation
Structure.
The technical aspect of cogging torque and torque pulsation is being solved, traditional common technique often has following several：
1) skewed stator slot technology：By the way that stator core was turned round certain angle, so as to cause cancelling out each other for particular harmonic,
So as to weaken cogging torque and torque pulsation；
2) skewed-rotor technology：It is exactly skewed-rotor technology that the principle of skewed stator slot, which is applied on rotor magnetic pole,.Here
There is step skewed pole technology in face, it can equally realize specific humorous by less segments in addition to conventional oblique pole technology
Ripple is cancelled out each other.
3) rotor sine air gap technology：By changing the shape of rotor, by air gap magnetic density waveform sineization, weakened field is humorous
Ripple, so as to weaken cogging torque and torque pulsation.
4) stator tooth shape optimum technology：Here there are many technical solutions, non-homogeneous air gap is made including stator tooth top；
The open-top slot of stator tooth；Size tooth technology；Do not wait notches technology etc..
5) asymmetric magnetic pole technology：Multiple magnetic poles are made into dissymmetrical structure, cause the phase of tangential force in a circumferential direction
It mutually offsets, so as to reduce the cogging torque of motor and torque pulsation, however this technology often causes the radial load mistake of motor
Greatly, so as to cause additional noise and vibration problem.
The principle of these technologies application is made a general survey of, substantially all nothing more than two kinds, first, magnetic field harmonics are weakened；It is second is that sharp
With harmonic cancellation technology.However both technologies all can generate a degree of weakening to magnetic flux and back-emf fundamental wave in itself,
It is reflected in motor torque output and just has a degree of loss, so as to influence the torque density of motor, power density.Using
For both principles while cogging torque and torque pulsation is weakened, it is difficult to accomplish to ensure that magnetic flux does not weaken.
In addition to above-mentioned these types of technology, there are a kind of most basic cogging torque and Torque Ripple Optimization mode：Rotor
Pole embrace optimizes.It changes the distribution of air gap flux density and rotor magnetic field by changing pole embrace, changes rotor
Between specific position tangential force size.This is an a kind of technology that is most basic, but least attracting attention.Although it can play weakening
The effect of cogging torque, but there is also it is one very big the problem of, i.e., deposited between the size of cogging torque and required magnetic flux
In great contradiction.When optimization pole embrace obtains minimum cogging torque, magnetic flux, torque, power density of motor etc. are but
It is non-optimized as a result, it is difficult the problem of coordination that this is just caused to design motor.How this problem is solved, with regard to energy
Take into account power density and cogging torque well.
Utility model content
The utility model is to solve above-mentioned technical problem and the technical solution adopted is that provide a kind of antisymmetry structure type
Novel permanent magnetic synchronous motor, wherein, specific technical solution is：
Including stator and rotor, the stator sleeve is deposited therebetween in the outside of rotor, the stator and rotor coaxial
The V-shape magnetic slot of multiple antisymmetry structures is provided in air gap, the iron core of the rotor, magnet steel is respectively by N poles S interpolars every interior
In the V-shape magnetic slot of the rotor core.
The novel permanent magnetic synchronous motor of above-mentioned antisymmetry structure type, wherein：The V-shape magnetic slot is eight, and
Center is antisymmetric to be distributed in the iron core of the rotor.
The utility model has the advantages that compared with the prior art：
On the one hand, the waveform of air gap flux density is improved, reduces cogging torque and torque pulsation；
On the other hand, radial electromagnetic force suffered by stator tooth is improved so that teeth portion is more uniformly stressed, and reduces radial direction electromagnetism
The amplitude of power effectively reduces the vibration and noise of motor on the whole.
Description of the drawings
Fig. 1 is stator, the structure diagram of rotor.
In figure：
1 stator, 2 rotor 3V font magnetic slots
Specific embodiment
The utility model will be further described with reference to the accompanying drawings and examples.
The utility model provides a kind of novel permanent magnetic synchronous motor of antisymmetry structure type：
The internal permanent magnet synchronous motor uses V-shape antisymmetry structure, and the length scale of two blocks of magnet steel of same pole is not
Together, the angle of the former symmetric scheme of center line deviation of V-shape structure is also required to be made a concrete analysis of according to actual conditions, by relevant
It analyzes data to understand, which influences highly significant to the cogging torque of motor and torque pulsation, passes through rational structure
Design can be substantially reduced the power density of the cogging torque and torque pulsation of motor without influencing motor.
Have the advantages that reduce cogging torque and torque pulsation, it includes stator 1 and rotor 2, and stator 1 is sleeved on rotor 2
Outside, the two is coaxial, and there are air gaps therebetween.The V-shape magnetic of multiple antisymmetry structures is provided in the rotor core 2
Steel tank 3, magnet steel is respectively by N poles S interpolars every in 3 slot of magnet steel of the rotor core 2 described in being embedded in.In the present embodiment, the V
Font magnetic slot 3 is eight, and center is antisymmetric is distributed in the rotor lamination 2.
The permanent magnet synchronous motor of the antisymmetry rotor structure weakens electricity in the case of not reducing magnetic flux utilization rate
The cogging torque of machine and torque pulsation, so as to weaken the vibration and noise of motor, so as to reduce the vibration and noise of motor,
The simple possible in actual process.
Although the utility model is disclosed as above with preferred embodiment, so it is not limited to the utility model, any
Those skilled in the art, without departing from the spirit and scope of the utility model, when can make a little modification and it is perfect, therefore this
The protection domain of utility model, which is worked as, is subject to what claims were defined.
Claims (2)
1. a kind of novel permanent magnetic synchronous motor of antisymmetry structure type, it is characterised in that：Including stator and rotor, the stator
It is sleeved on the outside of rotor, the stator and rotor coaxial, and therebetween there are air gap, is provided in the iron core of the rotor multiple
The V-shape magnetic slot of antisymmetry structure, magnet steel is respectively by N poles S interpolars every the V-shape magnetic slot for being embedded in the rotor core
It is interior.
2. the novel permanent magnetic synchronous motor of antisymmetry structure type as described in claim 1, it is characterised in that：The V-shape
Magnetic slot is eight, and center is antisymmetric is distributed in the iron core of the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721363652.7U CN207442668U (en) | 2017-10-23 | 2017-10-23 | A kind of novel permanent magnetic synchronous motor of antisymmetry structure type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721363652.7U CN207442668U (en) | 2017-10-23 | 2017-10-23 | A kind of novel permanent magnetic synchronous motor of antisymmetry structure type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207442668U true CN207442668U (en) | 2018-06-01 |
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ID=62293599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721363652.7U Expired - Fee Related CN207442668U (en) | 2017-10-23 | 2017-10-23 | A kind of novel permanent magnetic synchronous motor of antisymmetry structure type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207442668U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988533A (en) * | 2018-08-13 | 2018-12-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor core and permanent magnet synchronous motor with it |
| CN111384799A (en) * | 2018-12-27 | 2020-07-07 | 现代自动车株式会社 | Embedded permanent magnet motor and rotor comprising same |
-
2017
- 2017-10-23 CN CN201721363652.7U patent/CN207442668U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988533A (en) * | 2018-08-13 | 2018-12-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor core and permanent magnet synchronous motor with it |
| CN111384799A (en) * | 2018-12-27 | 2020-07-07 | 现代自动车株式会社 | Embedded permanent magnet motor and rotor comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180601 Termination date: 20191023 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |