CN107370269A - A kind of p-m rotor and asynchronous starting permanent magnet synchronous motor - Google Patents
A kind of p-m rotor and asynchronous starting permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN107370269A CN107370269A CN201710832491.XA CN201710832491A CN107370269A CN 107370269 A CN107370269 A CN 107370269A CN 201710832491 A CN201710832491 A CN 201710832491A CN 107370269 A CN107370269 A CN 107370269A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- rotor
- stator
- synchronous motor
- motor
- Prior art date
- 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.)
- Pending
Links
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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
-
- 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
-
- 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
- H02K21/46—Motors having additional short-circuited winding for starting as an asynchronous motor
-
- 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
Abstract
The invention discloses a kind of p-m rotor and asynchronous starting permanent magnet synchronous motor.Wherein, a kind of p-m rotor, including rotor core and permanent magnet, the cross sectional shape of the permanent magnet end is circular arc, and two end cross-sectionals of permanent magnet are symmetrical；The center of circle of the circular section of permanent magnet end is located normal on the center line in permanent magnet magnetization direction.It can improve the anti-demagnetization capability of permanent magnet in asynchronous starting permanent magnet synchronous motor on the premise of motor performance is kept.
Description
Technical field
The invention belongs to engine art, more particularly to a kind of p-m rotor and asynchronous starting permanent magnet synchronous motor.
Background technology
The winding current of motor is excessive or temperature is too high is likely to cause permanent magnet that irreversible demagnetization, permanent magnet hair occurs
The winding current that magneto is will further result in after raw irreversible demagnetization becomes big or temperature rise, and this will be further resulted in that forever again
The irreversible demagnetization area increase of magnet so that the efficiency of motor reduces, carrying load ability declines, and this will the largely upper limit
The popularization and application of magneto processed.
Tooth slot structure be present with rotor core exterior surface in the stator core inner surface of asynchronous starting permanent magnet synchronous motor,
Permanent magnet is located inside rotor core, has a variety of arrangements.Such motor can rely on the cage modle winding production in rotor slot
Raw induction torque realizes self-starting, and any type of controller is not usually required in running.
At present, the research on the demagnetization of such motor permanent magnet mainly surrounds demagnetization of the motor under different operating conditions
Feature expansion, the research for the anti-demagnetization capability of its permanent magnet is less.The performance of motor internal permanent magnet will directly affect different
Stability when self-starting ability and the bringing onto load operation of starting permanent-magnet synchronous motor is walked, therefore, how to improve such electricity
The anti-demagnetization capability of permanent magnet has far-reaching theory significance and real value in machine.
The content of the invention
In order to solve the deficiencies in the prior art, the first object of the present invention is to provide a kind of p-m rotor, and it can protected
On the premise of holding motor performance, the anti-demagnetization capability of permanent magnet in asynchronous starting permanent magnet synchronous motor is improved.
A kind of p-m rotor that the first object of the present invention provides, it includes rotor core and permanent magnet, the permanent magnet
The cross sectional shape of end is circular arc, and two end cross-sectionals of permanent magnet are symmetrical；The circle of the circular section of permanent magnet end
The heart is located normal on the center line in permanent magnet magnetization direction.
Further, it is wide along permanent magnet magnetization direction to be equal to permanent magnet end for the radius of the circular section of permanent magnet end
The half of degree.
It is wide along permanent magnet magnetization direction that the radius of the circular section of the permanent magnet end of the present invention is equal to permanent magnet end
On the one hand the half of degree, that is, permanent magnet end semicircular in shape, are so easy to permanent magnet to process, have on the other hand pruned permanent magnetism
The corner that body easily demagnetizes, such permanent magnet cause end corner areas is not present, and can effectively reduce permanent magnet end magnetic
The distortion degree of the line of force, the minimum operating point of permanent magnetism end region is improved, reduce the probability that permanent magnet demagnetizes, improved forever
The anti-demagnetization capability of magnet.
Further, it is wide along permanent magnet magnetization direction to be more than permanent magnet end for the radius of the circular section of permanent magnet end
The half of degree.
End corner areas is not present in the permanent magnet end of the present invention, can effectively reduce the permanent magnet end magnetic line of force
Distortion degree, the minimum operating point of permanent magnetism end region is improved, reduce the probability that permanent magnet demagnetizes, improve permanent magnet
Anti- demagnetization capability.
Further, there are multiple rotor slots the outer surface of the rotor core.
Further, at least one permanent magnet trough that is internally provided with of the rotor core, set in each permanent magnet trough
It is equipped with one or more permanent magnets.
Further, the size of permanent magnet and the size of permanent magnet trough match.
Further, when in the rotor core, when being internally provided with multiple permanent magnet troughs, permanent magnet trough is in " W " shape cloth
Put.
It should be noted that when when being internally provided with multiple permanent magnet troughs, can also being in other in the rotor core
Diversified forms are arranged.
Further, cylindrical shape is presented in the rotor core, and the silicon steel sheet placed by multiple stackings is process.
The second object of the present invention is to provide a kind of asynchronous starting permanent magnet synchronous motor.
A kind of asynchronous starting permanent magnet synchronous motor that the second object of the present invention provides, including：
Stator, and
P-m rotor described above, the p-m rotor can be rotatably set in the stator, and with the stator
It is spaced a distance.
Further, the stator includes columnar stator core, multiple radial directions along the stator are inwardly prolonged
The stator tooth stretched, the stator slot being distributed between the multiple stator tooth and the winding stator tooth are to produce rotating excitation field
Coil.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) in asynchronous starting permanent magnet synchronous motor, permanent magnet is located inside rotor core, in the work of strong demagnetized field
Under, if the cross sectional shape of permanent magnet is traditional rectangle, irreversible demagnetization easily occurs for the corner areas of permanent magnet.And
And in the presence of strong demagnetized field, the demagnetization region will further expand.The shape of permanent magnet end cross-sectional is adopted in the present invention
With circular arc, the probability that irreversible demagnetization occurs for permanent magnet end is effectively reduced, it is synchronously electronic to improve asynchronous starting and permanent magnet
The stability of machine operation.
(2) shape of the invention by changing asynchronous starting permanent magnet synchronous motor rotor core interior permanent magnets, effectively
Improve the anti-demagnetization capability of such motor, be advantageous to the stable operation of such motor, the motor of the invention be easily achieved and
Significant effect；And the present invention only changes the shape of permanent magnet end, the other structures parameter of motor does not change, to motor
Very little is influenceed caused by performance.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the improper restriction to the application.
Fig. 1 is the rotor structure schematic diagram with traditional rectangular permanent magnet；
Fig. 2 is the distribution diagram of magnetic line of force of the motor internal with traditional rectangular PM rotor；
Fig. 3 is a kind of permanent magnet rotor structure schematic diagram of the present invention；
Fig. 4 is that the end cross-sectional of the present invention is shaped as the permanent magnet schematic diagram of circular arc；
Fig. 5 is traditional rectangular permanent magnet figure compared with the change curve of the minimum operating point of permanent magnet of the present invention.
Wherein, 1- rotor cores, 2- permanent magnets, 3- rotor slots, 4- permanent magnet troughs.
Embodiment
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Fig. 1 is the rotor structure schematic diagram with traditional rectangular permanent magnet.
As shown in figure 1, the rotor with traditional rectangular permanent magnet includes：Rotor core 1, offer on rotor core 1 and turn
Pilot trench 3 and permanent magnet trough 4, permanent magnet 2 is provided with permanent magnet trough 4.Wherein, the rectangular cross-section of permanent magnet 2.
When the rotating speed of asynchronous starting permanent magnet synchronous motor is fixed as close to the steady state value of synchronous speed, using traditional rectangular
During the permanent magnet of cross sectional shape, when occurring in the most serious demagnetization operating point of motor, the distribution diagram of magnetic line of force of motor internal, such as scheme
Shown in 2.
From figure 2 it can be seen that the magnetic line of force distribution in most of region (region among permanent magnet) of permanent magnet
Uniformly, and the direction of magnetization with permanent magnet is consistent, illustrate the permanent magnet each point in this region the close size of magnetic and
Direction is consistent, and the probability very little demagnetized；And in the end of permanent magnet, there is distortion in the magnetic line of force, and direction is not
Consistent with the direction of magnetization of permanent magnet again, permanent magnet is deviateed in the corner location particularly in permanent magnet end, the direction of the magnetic line of force
The direction of magnetization it is more, the operating point of each point is relatively low in these regions, is easier to demagnetize.
In summary, when using traditional square-section permanent magnet, in the corner areas of permanent magnet end, permanent magnet
The operating point of each point is relatively low, and during the close value of the flex point magnetic on less than permanent-magnet material magnetization curve, irreversible demagnetization will occur；
During using traditional square-section permanent magnet, in the presence of strong demagnetized field, the corner areas of permanent magnet is easily sent out
Raw irreversible demagnetization, and in the presence of demagnetized field, the area in irreversible demagnetization region will further expand, and cause motor
Hydraulic performance decline.
Therefore, in order to improve the anti-demagnetization capability of asynchronous starting permanent magnet synchronous motor, the invention provides a kind of permanent magnetism to turn
Son.
As shown in figure 3, a kind of p-m rotor of the present invention, it includes rotor core 1 and permanent magnet 2, the end of permanent magnet 2
The cross sectional shape in portion is circular arc, and two end cross-sectionals of permanent magnet 2 are symmetrical；The circle of the circular section of the end of permanent magnet 2
The heart is located normal on the center line of the direction of magnetization of permanent magnet 2.
Wherein, there are multiple rotor slots 3 outer surface of the rotor core 1.
In specific implementation process, at least one permanent magnet trough 4, Mei Geyong is internally provided with the rotor core 1
One or more permanent magnets 2 are provided with magnet slot 4.
In specific implementation process, the size of the size and permanent magnet trough 4 of permanent magnet 2 matches.
When in the rotor core, when being internally provided with multiple permanent magnet troughs, permanent magnet trough is arranged in " W " shape.
It should be noted that when when being internally provided with multiple permanent magnet troughs, can also being in other in the rotor core
Diversified forms are arranged.
Wherein, cylindrical shape is presented in the rotor core 1, and the silicon steel sheet placed by multiple stackings is process.
As shown in figure 4, the section of permanent magnet is symmetrical, the center of circle O of permanent magnet circular arc end face is located normal to permanent magnetism
On the center line of the body direction of magnetization, the distance between the center of circle and permanent magnet end l=hm/ 2, and the radius R of end circular arc
=hm/2。
It is wide along permanent magnet magnetization direction that the radius of the circular section of the permanent magnet end of the present invention is equal to permanent magnet end
On the one hand the half of degree, that is, permanent magnet end semicircular in shape, are so easy to permanent magnet to process, have on the other hand pruned permanent magnetism
The corner that body easily demagnetizes, such permanent magnet cause end corner areas is not present, and can effectively reduce permanent magnet end magnetic
The distortion degree of the line of force, the minimum operating point of permanent magnetism end region is improved, reduce the probability that permanent magnet demagnetizes, improved forever
The anti-demagnetization capability of magnet.
In another embodiment, the radius R of the circular section of permanent magnet end is more than permanent magnet end along permanent magnet magnetic
Change direction width hm1/2.
Specifically, for different motors, FInite Element can be utilized according to the concrete structure parameter of motor to l's and R
Value optimizes calculating analysis, obtains the value suitable for the anti-demagnetization capability of particular motor most strong l and R.
End corner areas is not present in the permanent magnet end of the present invention, can effectively reduce the permanent magnet end magnetic line of force
Distortion degree, the minimum operating point of permanent magnetism end region is improved, reduce the probability that permanent magnet demagnetizes, improve permanent magnet
Anti- demagnetization capability.
When Fig. 5 is that the rotating speed of certain asynchronous starting permanent magnet synchronous motor is fixed as close to the steady state value of synchronous speed, respectively
The change curve of permanent magnet minimum operating point when being shaped as the permanent magnet of circular arc using traditional rectangular permanent magnet and end cross-sectional,
The curve indicates the minimum value of each point operating point on each moment whole permanent magnet.
For asynchronous starting permanent magnet synchronous motor, when electric motor starting to rotating speed is close to synchronous speed, the demagnetization in motor
Magnetic field intensity is maximum, therefore can obtain the most serious demagnetization operating point of motor (in most strong demagnetized field using the computational methods
When under effect, the minimum value of each point operating point on whole permanent magnets), i.e., the minimum value of homologous thread in figure.
From figure 5 it can be seen that the most serious of motor demagnetizes operating point for -1.18T when using square-section permanent magnet,
When using end cross-sectional to be shaped as the permanent magnet of circular arc, the most serious of motor demagnetizes operating point for -0.20T；Cut using end
Most serious demagnetization operating point ratio when face is shaped as the permanent magnet of circular arc is much higher when using square-section permanent magnet.Therefore,
When the permanent magnet of circular arc is shaped as using end cross-sectional, the risk that irreversible demagnetization occurs for permanent magnet substantially reduces, motor fortune
Capable reliability will effectively improve.
What the present invention changed is only the end shape of permanent magnet and when being changed to permanent magnetism shape, be perpendicular to
Carried out on the section of motor axial direction.The effect that the application makees to change is：Change permanent magnet cutting perpendicular to motor axial direction
Face shape, the shape of permanent magnet vertically is consistent；And the shape of permanent magnet end is only changed, to the shadow of motor performance
Sound is smaller.
Based on p-m rotor as shown in Figure 3, present invention also offers a kind of asynchronous starting permanent magnet synchronous motor.
A kind of asynchronous starting permanent magnet synchronous motor of the present invention, including：
Stator, and
P-m rotor as shown in Figure 3, the p-m rotor can be rotatably set in the stator, and with the stator
It is spaced a distance.
Wherein, the stator includes columnar stator core, multiple radial directions along the stator extend internally
Stator tooth, the stator slot being distributed between the multiple stator tooth and the winding stator tooth are to produce the line of rotating excitation field
Circle.
A kind of operation principle of asynchronous starting permanent magnet synchronous motor of the present invention is：
In asynchronous starting permanent magnet synchronous motor, permanent magnet is located inside rotor core, in the effect of strong demagnetized field
Under, if the cross sectional shape of permanent magnet is traditional rectangle, irreversible demagnetization easily occurs for the corner areas of permanent magnet.Also,
In the presence of strong demagnetized field, the demagnetization region will further expand.The shape of permanent magnet end cross-sectional uses in the present invention
Circular arc, the probability that irreversible demagnetization occurs for permanent magnet end is effectively reduced, improves asynchronous starting permanent magnet synchronous motor
The stability of operation.
Shape of the invention by changing asynchronous starting permanent magnet synchronous motor rotor core interior permanent magnets, effectively improve
The anti-demagnetization capability of such motor, is advantageous to the stable operation of such motor, the motor of the invention is easily achieved and effect
Significantly；And the present invention only changes the shape of permanent magnet end, the other structures parameter of motor does not change, to motor performance
Caused influence very little.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, model not is protected to the present invention
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deformation that creative work can make still within protection scope of the present invention.
Claims (10)
1. a kind of p-m rotor, it includes rotor core and permanent magnet, it is characterised in that the cross sectional shape of the permanent magnet end
For circular arc, and two end cross-sectionals of permanent magnet are symmetrical；The center of circle of the circular section of permanent magnet end is located normal to forever
On the center line in magnet magnetized direction.
A kind of 2. p-m rotor as claimed in claim 1, it is characterised in that radius of the circular section of permanent magnet end etc.
In half of the permanent magnet end along permanent magnet magnetization direction width.
3. a kind of p-m rotor as claimed in claim 1, it is characterised in that the radius of the circular section of permanent magnet end is big
In half of the permanent magnet end along permanent magnet magnetization direction width.
4. a kind of p-m rotor as described in claim 1 or 2 or 3, it is characterised in that the outer surface of the rotor core has more
Individual rotor slot.
5. a kind of p-m rotor as described in claim 1 or 2 or 3, it is characterised in that set in the inside of the rotor core
There is at least one permanent magnet trough, one or more permanent magnets are provided with each permanent magnet trough.
A kind of 6. p-m rotor as claimed in claim 5, it is characterised in that the size phase of the size of permanent magnet and permanent magnet trough
Matching.
7. a kind of p-m rotor as claimed in claim 5, it is characterised in that when more in being internally provided with for the rotor core
During individual permanent magnet trough, permanent magnet trough is arranged in " W " shape.
A kind of 8. p-m rotor as claimed in claim 1, it is characterised in that cylindrical shape is presented in the rotor core, and by more
The silicon steel sheet that individual stacking is placed is process.
A kind of 9. asynchronous starting permanent magnet synchronous motor, it is characterised in that including：
Stator, and
Such as the p-m rotor any one of claim 1-8, the p-m rotor can be rotatably set in the stator,
And open a distance with the sub-interval.
10. asynchronous starting permanent magnet synchronous motor as claimed in claim 9, it is characterised in that the stator includes cylindrical shape
Stator core, multiple radial directions along the stator extend internally stator tooth, be distributed between the multiple stator tooth
Stator slot and the winding stator tooth to produce the coil of rotating excitation field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710832491.XA CN107370269A (en) | 2017-09-15 | 2017-09-15 | A kind of p-m rotor and asynchronous starting permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710832491.XA CN107370269A (en) | 2017-09-15 | 2017-09-15 | A kind of p-m rotor and asynchronous starting permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107370269A true CN107370269A (en) | 2017-11-21 |
Family
ID=60302688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710832491.XA Pending CN107370269A (en) | 2017-09-15 | 2017-09-15 | A kind of p-m rotor and asynchronous starting permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107370269A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086276A (en) * | 2019-06-12 | 2019-08-02 | 广东工业大学 | A kind of magneto and its rotor |
| TWI806115B (en) * | 2020-09-25 | 2023-06-21 | 日商日立產機系統股份有限公司 | Rotor, cage induction motor and drive system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1729604A (en) * | 2003-01-15 | 2006-02-01 | 三菱电机株式会社 | Permanent magnet type motor |
| JP2011015572A (en) * | 2009-07-03 | 2011-01-20 | Mitsubishi Electric Corp | Embedded permanent magnet rotor and vacuum cleaner |
| CN102185449A (en) * | 2011-02-23 | 2011-09-14 | 华北电力大学 | Self-starting permanent magnet motor with three-section-circular-arc magnetic pole structure |
| CN203180672U (en) * | 2013-01-31 | 2013-09-04 | 艾默生环境优化技术(苏州)有限公司 | Permanent magnet motor rotor assembly, permanent magnet motor stator assembly and corresponding permanent magnet motor |
| CN103907266A (en) * | 2011-10-26 | 2014-07-02 | 三菱电机株式会社 | Rotor and interior permanent magnet motor |
| CN203896156U (en) * | 2014-05-28 | 2014-10-22 | 郑州飞机装备有限责任公司 | Asynchronous starting three-phase permanent-magnet synchronous motor structure |
| CN104753214A (en) * | 2013-12-30 | 2015-07-01 | 现代自动车株式会社 | Rotor of interior permanent magnet motor |
| CN106936234A (en) * | 2015-12-29 | 2017-07-07 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and magneto |
-
2017
- 2017-09-15 CN CN201710832491.XA patent/CN107370269A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1729604A (en) * | 2003-01-15 | 2006-02-01 | 三菱电机株式会社 | Permanent magnet type motor |
| JP2011015572A (en) * | 2009-07-03 | 2011-01-20 | Mitsubishi Electric Corp | Embedded permanent magnet rotor and vacuum cleaner |
| CN102185449A (en) * | 2011-02-23 | 2011-09-14 | 华北电力大学 | Self-starting permanent magnet motor with three-section-circular-arc magnetic pole structure |
| CN103907266A (en) * | 2011-10-26 | 2014-07-02 | 三菱电机株式会社 | Rotor and interior permanent magnet motor |
| CN203180672U (en) * | 2013-01-31 | 2013-09-04 | 艾默生环境优化技术(苏州)有限公司 | Permanent magnet motor rotor assembly, permanent magnet motor stator assembly and corresponding permanent magnet motor |
| CN104753214A (en) * | 2013-12-30 | 2015-07-01 | 现代自动车株式会社 | Rotor of interior permanent magnet motor |
| CN203896156U (en) * | 2014-05-28 | 2014-10-22 | 郑州飞机装备有限责任公司 | Asynchronous starting three-phase permanent-magnet synchronous motor structure |
| CN106936234A (en) * | 2015-12-29 | 2017-07-07 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor and magneto |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086276A (en) * | 2019-06-12 | 2019-08-02 | 广东工业大学 | A kind of magneto and its rotor |
| TWI806115B (en) * | 2020-09-25 | 2023-06-21 | 日商日立產機系統股份有限公司 | Rotor, cage induction motor and drive system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109274240B (en) | Composite amorphous alloy axial flux motor | |
| CN105322744B (en) | Split type combined permanent-magnet brushless motor for electric vehicle | |
| CN109194082B (en) | Amorphous alloy axial flux motor with wide field weakening speed expansion and low rotor loss | |
| CN110022043A (en) | A kind of virtual pole spoke type permanent magnet synchronous motor of integer slot Distributed Winding and its low pulse design method | |
| Hao et al. | Analysis of cogging torque reduction techniques in axial-field flux-switching permanent-magnet machine | |
| Zhao et al. | Analysis of a novel surface-mounted permanent magnet motor with hybrid magnets for low cost and low torque pulsation | |
| CN107104528A (en) | A kind of high-performance Halbach type p-m rotors for flywheel energy storage system | |
| CN110838779B (en) | Mixed excitation wound rotor and mixed excitation wound synchronous motor | |
| CN107124053B (en) | A kind of Consequent pole permanent magnet motor rotor using hybrid permanent-magnet | |
| CN103956843A (en) | Built-in permanent magnet synchronous motor used for high-speed electric spindle | |
| CN109378913A (en) | A kind of surface fluting durface mounted permanent magnet synchronous motor rotor structure | |
| Zhang et al. | Comparison study of interior permanent magnet synchronous machine with conventional and consequent pole rotor | |
| CN107370269A (en) | A kind of p-m rotor and asynchronous starting permanent magnet synchronous motor | |
| CN106026448B (en) | A kind of EPS brushless motors | |
| CN107425629B (en) | Permanent magnet motor rotor | |
| CN101494395A (en) | Permanent magnet motor of stator | |
| CN210350986U (en) | Birotor permanent magnet synchronous reluctance motor | |
| CN105958788A (en) | Synchronous reluctance motor | |
| CN107733112A (en) | A kind of ultrahigh speed permanent-magnetic synchronous motor rotor structure | |
| CN107086686B (en) | A kind of built-in permanent magnet motor rotor | |
| CN207410198U (en) | Rotor axial magnetizes permanent magnet switched reluctance motor | |
| CN205666745U (en) | Synchronous magnetic resistance motor | |
| CN107370268A (en) | P-m rotor and asynchronous starting permanent magnet synchronous motor with low loss of excitation risk | |
| CN203312945U (en) | Permanent magnetic rotor of three-phase asynchronous motor | |
| CN206620033U (en) | A kind of permanent-magnet synchronous electric motor for compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171121 |