CN202374148U - Permanent magnet synchronous motor and horizontal rotor structure thereof - Google Patents
Permanent magnet synchronous motor and horizontal rotor structure thereof Download PDFInfo
- Publication number
- CN202374148U CN202374148U CN2011205336006U CN201120533600U CN202374148U CN 202374148 U CN202374148 U CN 202374148U CN 2011205336006 U CN2011205336006 U CN 2011205336006U CN 201120533600 U CN201120533600 U CN 201120533600U CN 202374148 U CN202374148 U CN 202374148U
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- permanent magnet
- rotor structure
- synchronous motor
- rotor
- rotor core
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Abstract
The utility model discloses a horizontal rotor structure of a permanent magnet synchronous motor. The horizontal rotor structure is provided with a rotor core. At least two permanent magnets and a magnetic shielding bridge are arranged on each pole of the rotor core, and the at least two permanent magnets in each pole are horizontally arranged. Mounting holes in a number corresponding to that of the permanent magnets are formed in the rotor core. A reinforcing rib is formed on the part of the rotor core between every two adjacent mounting holes. The reinforcing ribs are arranged between the permanent magnets of each pole of the rotor structure, and bear centrifugal force generated by the mass of the rotor core and the permanent magnets in running, so that the influence of the centrifugal force on the strength of the magnetic shielding bridges is lowered; and the reinforcing ribs have magnetic shielding effects, so that the running reliability of the motor can be ensured.
Description
Technical field
The utility model relates to technical field of motors, particularly a kind of permagnetic synchronous motor and in-line rotor structure thereof.
Background technology
Along with permagnetic synchronous motor exploitation and control technology are ripe gradually, and the continuous development of permanent magnet aspect performance and industrialization, every field is to the employing permagnetic synchronous motor, and particularly the interest of permanent-magnet synchronous frequency control motor and demand are increasing.At present, permagnetic synchronous motor is widely used in various servomotors, wind power generation field and petroleum drilling and mining and driving motor for electric automobile etc.
Permagnetic synchronous motor comprises stator structure, rotor structure and rotating shaft, and rotating shaft drives rotor structure and rotates.Each utmost point of rotor core is equipped with permanent magnet, and permanent magnet can be built in the rotor core, promptly processes the installing hole that extends vertically in the rotor core, places in the installing hole permanent magnet also fixing.Also be provided with in the rotor core at a distance from magnetic bridge, be positioned at the permanent magnet two ends.
Yet; There is following technical problem in existing rotor structure: the caused centrifugal force of quality of permanent magnet quality and rotor core itself all can act at a distance from magnetic bridge; Need bear bigger pressure at a distance from magnetic bridge, influence intensity, and then can't satisfy the electromagnetic performance requirement of motor at a distance from magnetic bridge; And also there are problems such as manufacturability is poor, the permanent magnet installation effectiveness is also lower in the rotor structure of traditional structure.Especially it is bigger to work as power of motor; More than 100kW; And rotating speed is also higher, like the permagnetic synchronous motor application more than the 1000r/min, directly drives the field like the central air-conditioning compressor permanent magnet; The centrifugal force of permanent magnet and rotor core is more obvious to the influence at a distance from magnetic bridge, adopts traditional rotor magnetic circuit structural more to be difficult to meet the demands.
Therefore, how reducing the influence of centrifugal force to causing at a distance from magnetic bridge in the permanent-magnetic synchronous motor rotor structure, improve intensity, is those skilled in the art's technical issues that need to address.
The utility model content
The purpose of the utility model provides a kind of in-line rotor structure of permagnetic synchronous motor.The number of each extremely middle permanent magnet of this rotor structure is at least two, and has reinforcement between each permanent magnet, thereby the centrifugal force of rotor core and permanent magnet is minimized the influence at a distance from magnetic bridge.
Another purpose of the utility model provides a kind of permagnetic synchronous motor that comprises said in-line rotor structure.
In order to realize above-mentioned first purpose; The utility model provides a kind of in-line rotor structure of permagnetic synchronous motor; Have rotor core, each utmost point of said rotor core is equipped with permanent magnet and at a distance from magnetic bridge, and the number of permanent magnet described in each utmost point is at least two and be in-line and arrange; Said rotor core is provided with and the corresponding installing hole of said permanent magnet number, and the rotor core between each said installing hole partly forms reinforcement.
Preferably, radially center line symmetrical distribution of permanent magnet described in each utmost point.
Preferably, the number of permanent magnet described in each utmost point is three.
Preferably, form at a distance from the magnetic space between the outer end on each extremely middle said permanent magnet cross section of outermost and its installing hole.
Preferably, said separated magnetic space is wedge shape.
Preferably, the number of poles of said rotor core is four utmost points, sextupole or the ends of the earth.
In order to realize above-mentioned second purpose, the utility model also provides a kind of permagnetic synchronous motor, comprises stator structure, rotor structure, and rotating shaft, and said rotor structure is above-mentioned each described in-line rotor structure.
Each utmost point of the in-line rotor structure that the utility model provided is provided with at least two permanent magnets; And has reinforcement between the permanent magnet; When rotating with rotating shaft; The centrifugal force that the quality of in-line permanent magnet scope internal rotor iron core, the quality of permanent magnet produce will be born by reinforcement, reduce centrifugal force to the influence at a distance from magnetic bridge intensity; And reinforcement has separated magnetic effect; When carrying out the concrete design of rotor structure, carry out stress analysis and calculate, guaranteeing each reinforcement and under the situation that the suffered stress value of magnetic bridge meets the demands; Obtain the size of best reinforcement and separated magnetic bridge; Make at a distance from the intensity of magnetic bridge, electromagnetic performance the best of motor, and leave certain margin of safety, guarantee the motor reliability of operation.
The permagnetic synchronous motor that the utility model provided is provided with above-mentioned in-line rotor structure, because above-mentioned in-line rotor structure has above-mentioned technique effect, the permagnetic synchronous motor that is provided with this in-line rotor structure also should possess the corresponding techniques effect.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of in-line rotor structure of permagnetic synchronous motor that the utility model provides.
Among the figure:
100. rotor core 101. permanent magnets 102. are at a distance from 200. rotating shafts of magnetic bridge 103. reinforcements 104. installing holes
Embodiment
The core of the utility model is the in-line rotor structure that a kind of permagnetic synchronous motor is provided.The number of each extremely middle permanent magnet of this rotor structure is at least two, and has reinforcement between each permanent magnet, and then the centrifugal force of rotor core and permanent magnet is minimized the influence at a distance from magnetic bridge.
Another core of the utility model provides a kind of permagnetic synchronous motor that comprises said in-line rotor structure.
In order to make those skilled in the art understand the technical scheme of the utility model better, the utility model is done further to specify below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of embodiment of in-line rotor structure of permagnetic synchronous motor that the utility model provides.This figure only illustrates a utmost point of rotor structure, and following proposal does not receive the restriction of rotor number of poles, goes for the rotor structure of four utmost points, sextupole, ends of the earth motor.
The rotor structure of permagnetic synchronous motor among this embodiment has rotor core 100, and rotor core 100 runs through the rotating shaft 200 of motor, and rotating shaft 200 drives the stator rotation of rotor core 100 with respect to motor.Each utmost point of rotor core 100 is equipped with permanent magnet 101 and separated magnetic bridge 102.Rotor core 100 each extremely in the number of permanent magnets 101 be at least two, one of Fig. 1 rotor unshakable in one's determination 100 is provided with three permanent magnets 101 in extremely.
Length on each extremely middle outermost permanent magnet 101 cross section is less than the length of installing hole 104, and is so that form at a distance from the magnetic space in the outer end of outermost permanent magnet 101, as shown in Figure 1.Can further strengthen at a distance from the magnetic effect at a distance from the magnetic space, with separated magnetic bridge 102 common realizations at a distance from the magnetic function.When being provided with, can on the hole wall of installing hole 104, process breach or wedge groove inner structure, so that fixed permanent magnet 101 at a distance from the magnetic space.
When rotor structure rotates with rotating shaft; The quality of the rotor core 100 in in-line permanent magnet 101 scopes own, the quality of permanent magnet 101 will produce centrifugal force; Owing to have reinforcement 103 between each utmost point permanent magnet 101 in the foregoing description; The centrifugal force that then produces will be born by the reinforcement between the permanent magnet 101 103, reduce centrifugal force to the influence at a distance from magnetic bridge 102 intensity; And reinforcement 103 has separated magnetic effect.
When carrying out the concrete design of rotor structure; Under the prerequisite that satisfies motor electromagnetic performance and rotor manufacture process requirement;, under the maximum speed of operation, can carry out stress analysis to permanent magnet 101, rotor core 100 action of centrifugal force and calculate according to motor, guarantee under the situation that each reinforcement 103 and separated magnetic bridge 101 suffered stress values meet the demands; Obtain the size of best reinforcement 103 and separated magnetic bridge 102; So that at a distance from the intensity of magnetic bridge 103, electromagnetic performance the best of motor, and leave certain margin of safety, guarantee the motor reliability of operation.
In addition, because the number of each extremely interior permanent magnet 101 is more, the size of each permanent magnet 101 is less relatively; Permanent magnet 101 is mounted to 100 last times of rotor core; Only need according to permanent magnet 101 in each N of motor, the S prescribed direction under extremely, the guided tooling that utilizes non-magnet material to process pushes permanent magnet 101, and use device axial restraint permanent magnet 101 gets final product after the installation; Whole magnet steel installation process good manufacturability, production efficiency is high.
Except above-mentioned rotor structure, the utility model provides a kind of permagnetic synchronous motor, comprises stator structure, rotor structure; And rotating shaft 200; Wherein rotor structure is the described in-line rotor structure of above-mentioned arbitrary embodiment, and all the other structures please refer to prior art, and this paper repeats no more.
More than permagnetic synchronous motor and in-line rotor structure thereof that the utility model provided have been carried out detailed introduction.Used concrete example among this paper the principle and the execution mode of the utility model are set forth, the explanation of above embodiment just is used to help to understand the core concept of the utility model.Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection range of the utility model claim.
Claims (7)
1. the in-line rotor structure of a permagnetic synchronous motor; Has rotor core; Each utmost point of said rotor core is equipped with permanent magnet and at a distance from magnetic bridge, it is characterized in that, the number of permanent magnet described in each utmost point is at least two and be in-line and arrange; Said rotor core is provided with and the corresponding installing hole of said permanent magnet number, and the rotor core between each said installing hole partly forms reinforcement.
2. the in-line rotor structure of permagnetic synchronous motor according to claim 1 is characterized in that, permanent magnet described in each utmost point radially center line is symmetrically distributed.
3. the in-line rotor structure of permagnetic synchronous motor according to claim 1 is characterized in that, the number of permanent magnet described in each utmost point is three.
4. according to the in-line rotor structure of each described permagnetic synchronous motor of claim 1 to 3, it is characterized in that, form at a distance from the magnetic space between the outer end on each extremely middle said permanent magnet cross section of outermost and its installing hole.
5. the in-line rotor structure of permagnetic synchronous motor according to claim 4 is characterized in that, said separated magnetic space is wedge shape.
6. according to the in-line rotor structure of each described permagnetic synchronous motor of claim 1 to 3, it is characterized in that the number of poles of said rotor core is four utmost points, sextupole or the ends of the earth.
7. a permagnetic synchronous motor comprises stator structure, rotor structure, and rotating shaft, it is characterized in that, said rotor structure is aforesaid right requirement 1 to 6 each described in-line rotor structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205336006U CN202374148U (en) | 2011-12-19 | 2011-12-19 | Permanent magnet synchronous motor and horizontal rotor structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205336006U CN202374148U (en) | 2011-12-19 | 2011-12-19 | Permanent magnet synchronous motor and horizontal rotor structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202374148U true CN202374148U (en) | 2012-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205336006U Expired - Lifetime CN202374148U (en) | 2011-12-19 | 2011-12-19 | Permanent magnet synchronous motor and horizontal rotor structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202374148U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386700A (en) * | 2011-12-19 | 2012-03-21 | 南车株洲电机有限公司 | Permanent magnet synchronous motor and linear rotor structure thereof |
| CN103401332A (en) * | 2013-08-21 | 2013-11-20 | 南车株洲电机有限公司 | Permanent-magnet synchronous motor and motor rotor |
-
2011
- 2011-12-19 CN CN2011205336006U patent/CN202374148U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386700A (en) * | 2011-12-19 | 2012-03-21 | 南车株洲电机有限公司 | Permanent magnet synchronous motor and linear rotor structure thereof |
| CN103401332A (en) * | 2013-08-21 | 2013-11-20 | 南车株洲电机有限公司 | Permanent-magnet synchronous motor and motor rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |
|
| CX01 | Expiry of patent term |