CN110601486A - Built-in permanent magnet synchronous motor structure with efficient speed expansion - Google Patents
Built-in permanent magnet synchronous motor structure with efficient speed expansion Download PDFInfo
- Publication number
- CN110601486A CN110601486A CN201911058078.8A CN201911058078A CN110601486A CN 110601486 A CN110601486 A CN 110601486A CN 201911058078 A CN201911058078 A CN 201911058078A CN 110601486 A CN110601486 A CN 110601486A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- motor
- rotor
- magnetic
- pole
- 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
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052742 iron Inorganic materials 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000002955 isolation Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims 1
- 230000005347 demagnetization Effects 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002427 irreversible effect Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 230000005389 magnetism Effects 0.000 abstract 1
- 230000003313 weakening effect Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 6
- 230000033228 biological regulation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention provides a built-in permanent magnet synchronous motor structure with high-efficiency speed expansion, which belongs to the technical field of motor structures, wherein a motor adopts an inner rotor structure, each pole of a rotor adopts a V-shaped structure, a top angle and a bottom end of each pole of magnetic circuit are respectively provided with a magnet isolating bridge, a magnetic pole at each side is divided into two sections, then a magnetic conducting iron bridge is added between the two sections of magnetic poles, and grooves are formed in the outer side of the rotor, the lower side of the magnetic pole and the side of an adjacent stator, and the technical key points are as follows: the magnetic isolation iron bridges at the two ends can prevent the reduction of the utilization rate of permanent magnet materials caused by overlarge magnetic leakage, ensure the stable operation of the power of the motor in a certain range, have the effect of weakening the magnetism and expanding the speed, open a groove at the outer side of the rotor, put in a rotor conducting bar and realize the quick start of the motor; a water cooling pipeline is arranged between the lower part of each pole of permanent magnet and the adjacent stator slot in a slotted mode, so that the efficiency reduction of the motor caused by temperature rise and the irreversible demagnetization of the permanent magnet caused by overhigh temperature can be inhibited.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a built-in permanent magnet synchronous motor structure capable of efficiently expanding speed.
Background
The built-in permanent magnet synchronous motor is a controllable alternating current synchronous motor which appears along with the development of the permanent magnet motor, a stator of the built-in permanent magnet synchronous motor adopts a tooth space structure, and a rotor of the built-in permanent magnet synchronous motor adopts a built-in permanent magnet structure. The built-in permanent magnet synchronous motor has the advantages of simple structure, small volume, large torque density, high efficiency and the like, is widely applied to various engineering fields, and is an energy-saving environment-friendly motor with good development prospect. However, the speed regulation range of the interior permanent magnet synchronous motor is limited, which causes that the motor is difficult to stably run at the rated rotation speed, the interior permanent magnet synchronous motor is complicated to start, which causes that the motor needs a long time to run at the rated state when being started every time, the application of the motor in a system needing frequent starting is limited, in addition, the poor heat dissipation of the motor causes that the efficiency of the motor is reduced and the demagnetization of the permanent magnet is also a common problem, and the defects limit the further development of the interior permanent magnet motor.
Disclosure of Invention
The invention aims to provide a built-in permanent magnet synchronous motor structure with high-efficiency speed expansion, which aims to solve the problems of unstable running power, small speed regulation range, difficult starting of a motor, efficiency reduction caused by overhigh temperature during the running of the motor, irreversible demagnetization of a permanent magnet and the like of the existing built-in permanent magnet synchronous motor during the speed regulation.
In order to achieve the aim, the invention adopts the technical scheme that: the invention provides a built-in permanent magnet synchronous motor structure with high-efficiency speed expansion, which is characterized in that the internal structures of a rotor and a stator of a motor are improved; each pole magnetic circuit of the rotor adopts a V-shaped structure, a top angle and a bottom end in each pole magnetic circuit are respectively provided with a magnetic isolation iron bridge, a magnetic pole at each side is divided into two sections, then a magnetic conduction iron bridge is added between the two sections of magnetic poles, a groove is formed in the outer side of the rotor, a rotor conducting bar is placed into the groove, a groove is formed below each pole permanent magnet, and a water pipe is placed into the groove; the stator is provided with slots between adjacent stator slots, and water pipes are introduced into the slots.
By adopting the technical scheme, the built-in permanent magnet synchronous motor obtains good operation characteristics, the top angle and the bottom end of the V-shaped permanent magnet are both provided with the magnet isolating bridges, so that the lower utilization rate of permanent magnet materials caused by overlarge magnetic flux leakage can be prevented, and the stable operation of the motor power in a certain range can be ensured; each side permanent magnet of the V-shaped magnetic circuit is divided into two sections, then a magnetic conduction iron bridge is added between the two sections of permanent magnets with the same polarity, and the added magnetic conduction iron bridge can enable a part of magnetic flux to generate magnetic leakage through the iron bridge, so that the magnetic flux in the main magnetic circuit is reduced, the straight-axis magnetic resistance of the rotor is reduced, and the weak magnetic speed expansion effect is started; slotting the outer side of the rotor, putting a rotor conducting bar in the slot, and introducing symmetrical three-phase current into the conducting bar, thereby realizing asynchronous starting of the motor and enabling the motor to be quickly started to enter a stable state; a water cooling pipeline is arranged between the lower part of the magnetic pole and the adjacent stator slot in a slotting mode, and when water flows through the pipeline, the specific heat capacity of the water is small, so that the efficiency reduction of the motor caused by temperature rise and the irreversible demagnetization of the permanent magnet caused by overhigh temperature can be effectively restrained, and the motor can effectively run at high speed.
Drawings
Fig. 1 is a schematic structural diagram of an efficient speed-expanding interior permanent magnet synchronous motor of the invention.
In the figure: 1. a magnetic isolation iron bridge 2, a water cooling pipeline 3, a permanent magnet 4, a rotor conducting bar 5 and a magnetic conduction iron bridge.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to the description, the attached figure 1 is a structural schematic diagram of a built-in permanent magnet synchronous motor with high efficiency and speed expansion; the motor is characterized in that the internal structures of a rotor and a stator of the motor are improved; each pole magnetic circuit of the rotor adopts a V-shaped structure, a top angle and a bottom end in each pole magnetic circuit are respectively provided with a magnetic isolation iron bridge, a magnetic pole at each side is divided into two sections, then a magnetic conduction iron bridge is added between the two sections of magnetic poles, a groove is formed in the outer side of the rotor, a rotor conducting bar is placed into the groove, a groove is formed below each pole permanent magnet, and a water pipe is placed into the groove; the stator is provided with slots between adjacent stator slots, and water pipes are introduced into the slots.
By adopting the technical scheme, the built-in permanent magnet synchronous motor obtains good operation characteristics, the top angle and the bottom end of the V-shaped permanent magnet are both provided with the magnet isolating bridges, so that the lower utilization rate of permanent magnet materials caused by overlarge magnetic flux leakage can be prevented, and the stable operation of the motor power in a certain range can be ensured; each side permanent magnet of the V-shaped magnetic circuit is divided into two sections, then a magnetic conduction iron bridge is added between the two sections of permanent magnets with the same polarity, and the added magnetic conduction iron bridge can enable a part of magnetic flux to generate magnetic leakage through the iron bridge, so that the magnetic flux in the main magnetic circuit is reduced, the straight-axis magnetic resistance of the rotor is reduced, and the weak magnetic speed expansion effect is started; slotting the outer side of the rotor, putting a rotor conducting bar in the slot, and introducing symmetrical three-phase current into the conducting bar, thereby realizing asynchronous starting of the motor and enabling the motor to be quickly started to enter a stable state; a water cooling pipeline is arranged between the lower part of the magnetic pole and the adjacent stator slot in a slotting mode, and when water flows through the pipeline, the specific heat capacity of the water is small, so that the efficiency reduction of the motor caused by temperature rise and the irreversible demagnetization of the permanent magnet caused by overhigh temperature can be effectively restrained, and the motor can effectively run at high speed.
The above description is a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above description, and several simple deductions or substitutions may be made without departing from the spirit of the present invention.
Claims (5)
1. The utility model provides a built-in PMSM structure of high-efficient speed extension which characterized in that: the motor adopts an inner rotor structure, the permanent magnets are arranged in the rotor, each permanent magnet is divided into two sections and an auxiliary groove is added in order to ensure stable operation and wider speed expansion range when the motor can regulate the speed, the auxiliary groove is added on the outer side of the rotor in order to solve the problem of difficult starting of the motor to realize asynchronous starting of the motor, and the auxiliary groove is added between the lower part of each pole of permanent magnet and the stator groove in order to solve the problem of overhigh temperature in the operation process of the motor.
2. The high-efficiency speed-expanding interior permanent magnet synchronous motor structure according to claim 1, characterized in that: and magnetic isolation iron bridges are added at two top corners and bottom ends of each pole of permanent magnet.
3. The high-efficiency speed-expanding interior permanent magnet synchronous motor structure according to claim 1, characterized in that: the permanent magnets on each side are divided into two sections, and then a magnetic iron bridge is added between the two sections of permanent magnets.
4. The high-efficiency speed-expanding interior permanent magnet synchronous motor structure according to claim 1, characterized in that: rotor guide bars are placed in auxiliary grooves on the outer side of the rotor.
5. The high-efficiency speed-expanding interior permanent magnet synchronous motor structure according to claim 1, characterized in that: and auxiliary grooves are added below the permanent magnets of each pole and between adjacent stator grooves, and water pipes are placed in the auxiliary grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911058078.8A CN110601486A (en) | 2019-11-01 | 2019-11-01 | Built-in permanent magnet synchronous motor structure with efficient speed expansion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911058078.8A CN110601486A (en) | 2019-11-01 | 2019-11-01 | Built-in permanent magnet synchronous motor structure with efficient speed expansion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110601486A true CN110601486A (en) | 2019-12-20 |
Family
ID=68852078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911058078.8A Pending CN110601486A (en) | 2019-11-01 | 2019-11-01 | Built-in permanent magnet synchronous motor structure with efficient speed expansion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110601486A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112583159A (en) * | 2020-12-21 | 2021-03-30 | 哈尔滨理工大学 | Novel permanent magnet motor structure |
| CN112583160A (en) * | 2020-12-21 | 2021-03-30 | 哈尔滨理工大学 | Novel permanent magnet synchronous motor structure |
| CN113131636A (en) * | 2021-04-19 | 2021-07-16 | 哈尔滨理工大学 | Novel built-in permanent magnet synchronous motor structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102111051A (en) * | 2011-02-25 | 2011-06-29 | 华北电力大学 | Self-starting permanent magnet motor provided with composite material starting conducting bars |
| CN202004553U (en) * | 2011-03-07 | 2011-10-05 | 浙江大学 | V-shaped groove rotor of self-starting permanent magnet synchronous motor |
| CN204271865U (en) * | 2014-12-15 | 2015-04-15 | 河南理工大学 | A kind of surface-built-in asynchronous starting and permanent magnet rotor |
| US20170047799A1 (en) * | 2014-04-25 | 2017-02-16 | United Automotive Electronic Systems Co. Ltd | Permanent magnet synchronous motor and a rotor thereof |
| CN108448767A (en) * | 2018-05-11 | 2018-08-24 | 哈尔滨理工大学 | A kind of permasyn morot with new type rotor structure |
| CN109586434A (en) * | 2018-10-25 | 2019-04-05 | 华中科技大学 | A kind of machinery adjustable magnetic magneto |
| CN109861425A (en) * | 2019-03-14 | 2019-06-07 | 江苏迈吉易威电动科技有限公司 | It is a kind of mix cage rotor line-start permanent magnetic synchronous motor and its starting method |
-
2019
- 2019-11-01 CN CN201911058078.8A patent/CN110601486A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102111051A (en) * | 2011-02-25 | 2011-06-29 | 华北电力大学 | Self-starting permanent magnet motor provided with composite material starting conducting bars |
| CN202004553U (en) * | 2011-03-07 | 2011-10-05 | 浙江大学 | V-shaped groove rotor of self-starting permanent magnet synchronous motor |
| US20170047799A1 (en) * | 2014-04-25 | 2017-02-16 | United Automotive Electronic Systems Co. Ltd | Permanent magnet synchronous motor and a rotor thereof |
| CN204271865U (en) * | 2014-12-15 | 2015-04-15 | 河南理工大学 | A kind of surface-built-in asynchronous starting and permanent magnet rotor |
| CN108448767A (en) * | 2018-05-11 | 2018-08-24 | 哈尔滨理工大学 | A kind of permasyn morot with new type rotor structure |
| CN109586434A (en) * | 2018-10-25 | 2019-04-05 | 华中科技大学 | A kind of machinery adjustable magnetic magneto |
| CN109861425A (en) * | 2019-03-14 | 2019-06-07 | 江苏迈吉易威电动科技有限公司 | It is a kind of mix cage rotor line-start permanent magnetic synchronous motor and its starting method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112583159A (en) * | 2020-12-21 | 2021-03-30 | 哈尔滨理工大学 | Novel permanent magnet motor structure |
| CN112583160A (en) * | 2020-12-21 | 2021-03-30 | 哈尔滨理工大学 | Novel permanent magnet synchronous motor structure |
| CN113131636A (en) * | 2021-04-19 | 2021-07-16 | 哈尔滨理工大学 | Novel built-in permanent magnet synchronous motor structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110601486A (en) | Built-in permanent magnet synchronous motor structure with efficient speed expansion | |
| CN104578477A (en) | Mixed permanent magnetic pole-alternating and magnetic flux-switching memory motor and winding switching magnetism-weakening control method thereof | |
| CN105449968B (en) | Composite poles formula Surface Mount permagnetic synchronous motor | |
| CN104485762A (en) | Rotor of permanent magnet synchronous motor and permanent magnet synchronous motor provided with same | |
| CN105790456B (en) | A kind of three-phase hybrid excitation flux switch motor structure | |
| CN103219814A (en) | Asynchronous starting permanent magnet synchronous motor rotor based on permanent magnets with different residual magnetic densities | |
| CN104967270B (en) | Magnetism gathering passive rotor transverse magnetic flux single-phase motor | |
| CN209881626U (en) | Novel surface-mounted permanent magnet synchronous motor structure | |
| CN104967271A (en) | Double-ring-winding passive rotor transverse magnetic flux single-phase motor | |
| CN103248189A (en) | Bipolar stator-surface-mounting type permanent magnet motor | |
| CN107425629B (en) | Permanent magnet motor rotor | |
| CN105391264B (en) | Composite poles formula built-in tangential permagnetic synchronous motor | |
| Patel et al. | Performance comparison of permanent magnet synchronous motor and induction motor for cooling tower application | |
| CN205882877U (en) | Mix magnetic circuit driving motor | |
| CN105429409B (en) | Composite poles formula axial flux permanent magnet synchronous motor | |
| CN104184284A (en) | Double-magnetic-circuit asynchronous-starting permanent magnet synchronous motor rotor | |
| CN108233652B (en) | Double-stator asynchronous starting permanent magnet synchronous motor | |
| CN201563010U (en) | Permanent magnet motor suitable for constant power flat speed controlling running stator | |
| CN106059131A (en) | Hybrid magnetic path driving motor | |
| CN113131636A (en) | Novel built-in permanent magnet synchronous motor structure | |
| CN213602467U (en) | Novel permanent magnet motor structure | |
| CN105262307B (en) | Electric car permanent magnet brush motor | |
| Sakai et al. | Permanent magnet motors capable of pole-changing without changing the connection of the windings for high efficiency | |
| Wu et al. | Performance evaluation of a U-shaped less-rare-earth hybrid permanent magnet assisted synchronous reluctance motor | |
| CN107565786B (en) | Permanent magnet synchronous motor |
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 |