CN202004609U - Permanent magnet synchronous motor with wide speed regulation range - Google Patents
Permanent magnet synchronous motor with wide speed regulation range Download PDFInfo
- Publication number
- CN202004609U CN202004609U CN2011201072545U CN201120107254U CN202004609U CN 202004609 U CN202004609 U CN 202004609U CN 2011201072545 U CN2011201072545 U CN 2011201072545U CN 201120107254 U CN201120107254 U CN 201120107254U CN 202004609 U CN202004609 U CN 202004609U
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- permanent magnet
- permanent magnetism
- stator
- raised line
- magnetic pole
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Abstract
The utility model relates to a permanent magnet synchronous motor with wide speed regulation range, belonging to the motor technology field; the permanent magnet synchronous motor solves the technical problem that the existing permanent magnet synchronous motor is inconvenient for flux weakening and constant-power speed regulation. A rotor of the motor comprises a rotating shaft, a rotor yoke and a plurality of permanent magnet poles, all permanent magnet poles are axially and systematically fixed at the outer periphery of the rotor yoke, the permanent magnet poles are radial magnetized steel, and magnetism isolation magnetic bridges are respectively arranged at the edges of two sides of each permanent magnet pole; a plurality of raised lines which are radially protruded outwards are arranged at the outer periphery of the rotor yoke in an axial symmetry manner, one raised line is arranged between every two adjacent permanent magnet pole, the axis of each raised line is parallel to the axis of the permanent magnet pole, the edges of two sides of each raised line are fitted with the magnetism isolation magnetic bridges at side edges of the adjacent permanent magnet poles, and all the permanent magnet poles, the outer periphery surfaces of the magnetism isolation magnetic bridges at the edges of two sides as well as the outer periphery of each raised line are arranged on the same circumferential surface. The motor provided by the utility model is convenient for flux weakening and constant-power speed regulation.
Description
Technical field
The utility model relates to motor technology, particularly relates to a kind of technology of wide range speed control permagnetic synchronous motor.
Background technology
As shown in Figure 3, existing permagnetic synchronous motor all comprises stator 24 and rotor, and its rotor is all by coaxial affixed rotating shaft 21, rotor yoke 22, and axial symmetry is fixed in a plurality of permanent magnetism magnetic poles 23 compositions of rotor yoke 22 outer peripheral faces.
The effective way that permagnetic synchronous motor improves power of motor density and efficient is to make full use of reluctance power, but in the existing permagnetic synchronous motor, all exist the space between each permanent magnetism magnetic pole, therefore its d-axis magnetic circuit (d ' axle among Fig. 3) must pass through permanent magnetism magnetic pole, it hands over axle magnetic circuit (q ' axle among Fig. 3) by air (being the space between each permanent magnetism magnetic pole), because but the magnetic resistance very big (near air) of permanent magnetism magnetic pole, therefore the magnetic resistance and the inductance of the friendship axle magnetic circuit between the d-axis magnetic circuit of existing permagnetic synchronous motor (d ' axle) and adjacent permanent magnetism magnetic pole (q ' spool) are basic identical, there are not saliency and reluctance torque, be the shunt wound dynamo characteristic, being not easy to weak magnetism speed expansion and constant-power speed regulation, is typical non-salient pole magnetic circuit motor.
The utility model content
At the defective that exists in the above-mentioned prior art, technical problem to be solved in the utility model provides a kind of wide range speed control permagnetic synchronous motor of being convenient to weak magnetism speed expansion and constant-power speed regulation.
In order to solve the problems of the technologies described above, a kind of wide range speed control permagnetic synchronous motor provided by the utility model comprises stator and rotor, and described rotor coaxial is sheathed in the stator, and and stator between have air gap; Described stator comprises stator yoke and stator winding, described stator yoke in the form of a ring, its inner ring axial symmetry is provided with a plurality of stator groove, described stator winding is embedded in each stator groove; Described rotor comprises rotating shaft, rotor yoke and a plurality of permanent magnetism magnetic pole, described rotor yoke is coaxial affixed with rotating shaft, each permanent magnetism magnetic pole axial symmetry is fixed in the outer peripheral face of rotor yoke, it is characterized in that: described permanent magnetism magnetic pole is the diametrical magnetization magnet steel, and the both sides of the edge of each permanent magnetism magnetic pole respectively are provided with one every magnetic magnetic sedan-chair;
The outer peripheral face axial symmetry of described rotor yoke is provided with a plurality of raised lines that radially outward protrude, the quantity of described raised line is consistent with the quantity of permanent magnetism magnetic pole, between per two adjacent permanent magnetism magnetic poles a raised line is arranged all, the axis of every raised line all is parallel to the axis of permanent magnetism magnetic pole, the both sides of the edge of every raised line all with the fitting of adjacent permanent magnetism magnetic pole lateral edges every magnetic magnetic sedan-chair, and the outer peripheral face every magnetic magnetic sedan-chair of each permanent magnetism magnetic pole and both sides of the edge thereof is positioned on the same periphery with each raised line outer peripheral face.
Further, the outer ring of described rotor is provided with the non magnetic retaining ring around its side face one circle.
Further, axial symmetry is provided with a plurality of triangle through holes on the described rotor yoke, and the axis of each triangle through hole all is parallel to the axis of rotating shaft.
The wide range speed control permagnetic synchronous motor that the utility model provides, because the outer peripheral face axial symmetry of rotor yoke is provided with a plurality of raised lines that radially outward protrude, the outer peripheral face every magnetic magnetic sedan-chair of each permanent magnetism magnetic pole and both sides of the edge thereof, be positioned on the same periphery with each raised line outer peripheral face, thereby make and form uniform radial air gap between stator and the rotor, and the d-axis magnetic circuit of pole center does not wait with the magnetic resistance of handing over the axle magnetic circuit, be directed at the d-axis inductance less than handing over the axle inductance, make rotor produce saliency, make motor on the basis of permanent-magnet torque superposition reluctance torque, reluctance torque have a starting characteristic that helps improve motor, overload capacity and power density, be easy to weak-magnetic speed-regulating, enlarge permanent power bracket operation.
Description of drawings
Fig. 1 is the structural representation of the rotor in the wide range speed control permagnetic synchronous motor of the utility model embodiment;
Fig. 2 is the torque angle displacement characteristic curve chart of the wide range speed control permagnetic synchronous motor of the utility model embodiment;
Fig. 3 is the structural representation of existing permagnetic synchronous motor.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model is described in further detail, but present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof all should be listed protection range of the present utility model in.
As shown in Figure 1, a kind of wide range speed control permagnetic synchronous motor that the utility model embodiment is provided comprises stator 6 and rotor, and described rotor coaxial is sheathed in the stator 6, and and stator 6 between have air gap; Described stator 6 comprises stator yoke and stator winding, described stator yoke in the form of a ring, its inner ring axial symmetry is provided with a plurality of stator groove, described stator winding is embedded in each stator groove; Described rotor comprises rotating shaft 1, rotor yoke 2 and a plurality of permanent magnetism magnetic pole 3, described rotor yoke 2 is coaxial affixed with rotating shaft 1, each permanent magnetism magnetic pole 3 axial symmetry is fixed in the outer peripheral face of rotor yoke 2, it is characterized in that: described permanent magnetism magnetic pole 3 is diametrical magnetization magnet steel, and the both sides of the edge of each permanent magnetism magnetic pole 3 respectively are provided with one every magnetic magnetic sedan-chair 5;
The outer peripheral face axial symmetry of described rotor yoke 2 is provided with a plurality of raised lines 4 that radially outward protrude, the quantity of described raised line 4 is consistent with the quantity of permanent magnetism magnetic pole 3, between per two adjacent permanent magnetism magnetic poles 3 raised line 4 is arranged all, the axis of every raised line 4 all is parallel to the axis of permanent magnetism magnetic pole 3, the both sides of the edge of every raised line 4 all with the fitting of adjacent permanent magnetism magnetic pole 3 lateral edges every magnetic magnetic sedan-chair 5, and the outer peripheral face every magnetic magnetic sedan-chair 5 of each permanent magnetism magnetic pole 3 and both sides of the edge thereof is positioned on the same periphery with each raised line 4 outer peripheral face.
Among the utility model embodiment, the outer ring of described rotor is provided with the non magnetic retaining ring around its side face one circle.
Among the utility model embodiment, axial symmetry is provided with a plurality of triangle through holes on the described rotor yoke 2, and the axis of each triangle through hole all is parallel to the axis of rotating shaft 1.
The utility model embodiment is because the outer peripheral face every magnetic magnetic sedan-chair of each permanent magnetism magnetic pole and both sides of the edge thereof, be positioned on the same periphery with each raised line outer peripheral face, thereby make and form uniform radial air gap between stator and the rotor, the d-axis magnetic circuit of pole center (the d axle among Fig. 1) must be by the permanent magnetism magnetic pole of magnetic resistance big (near air), hand over axle magnetic circuit (the q axle among Fig. 1) then by the less rotor yoke of magnetic resistance, make the magnetic resistance with handing over axle magnetic circuit (q axle) of d-axis magnetic circuit (d axle) not wait, be directed at the d-axis inductance less than handing over the axle inductance, make rotor produce saliency, make motor on the basis of permanent-magnet torque superposition reluctance torque, reluctance torque have a starting characteristic that helps improve motor, overload capacity and power density, be easy to weak-magnetic speed-regulating, enlarge permanent power bracket operation, the torque calculation formula of motor is:
In the formula: T is a motor torque, and p is the permanent magnetism magnetic pole logarithm,
Be magnetic linkage,
Be the friendship shaft current,
Be direct-axis current,
Be the d-axis inductance,
For handing over the axle inductance;
In addition, each permanent magnetism magnetic pole both sides of the edge can guarantee that every magnetic magnetic sedan-chair magnetic circuit is saturated, make permanent magnet flux be difficult to by, can increase leakage reluctance, effectively reduce leakage flux, improve air gap flux density, reduce core loss and avoid static, dynamically armature reaction degaussing danger, can realize that efficient, high power density, high torque density, high overload ability are strong, the even running of permanent torque of low fluctuation, fast-response, low noise, miniaturization and and low speed and the permanent power expansion speed of high speed.
Fig. 2 is the torque angle displacement characteristic curve of the utility model embodiment, and the curve C 1 among this figure is a permanent-magnet torque, and C2 is a reluctance torque, and C3 is a motor torque, and Tc is a torque axis, and θ is a square angle axle;
As shown in Figure 2, among the utility model embodiment, because the existence of reluctance torque C2, the peak value that makes on the one hand motor torque C3 is significantly greater than the peak value of permanent-magnet torque C1, effectively improve the power density and the torque density of motor, play the effect of the permanent power expansion speed of weak magnetic on the other hand, under the condition of voltage constant, also can obtain the constant power speed range broader than existing permagnetic synchronous motor, satisfy the requirement of electromechanical integration, realize high power density, high torque density, wide range speed control, fast-response, frequent starting and even running with the high accuracy drive motors.
Claims (3)
1. a wide range speed control permagnetic synchronous motor comprises stator and rotor, and described rotor coaxial is sheathed in the stator, and and stator between have air gap; Described stator comprises stator yoke and stator winding, described stator yoke in the form of a ring, its inner ring axial symmetry is provided with a plurality of stator groove, described stator winding is embedded in each stator groove; Described rotor comprises rotating shaft, rotor yoke and a plurality of permanent magnetism magnetic pole, described rotor yoke is coaxial affixed with rotating shaft, each permanent magnetism magnetic pole axial symmetry is fixed in the outer peripheral face of rotor yoke, it is characterized in that: described permanent magnetism magnetic pole is the diametrical magnetization magnet steel, and the both sides of the edge of each permanent magnetism magnetic pole respectively are provided with one every magnetic magnetic sedan-chair;
The outer peripheral face axial symmetry of described rotor yoke is provided with a plurality of raised lines that radially outward protrude, the quantity of described raised line is consistent with the quantity of permanent magnetism magnetic pole, between per two adjacent permanent magnetism magnetic poles a raised line is arranged all, the axis of every raised line all is parallel to the axis of permanent magnetism magnetic pole, the both sides of the edge of every raised line all with the fitting of adjacent permanent magnetism magnetic pole lateral edges every magnetic magnetic sedan-chair, and the outer peripheral face every magnetic magnetic sedan-chair of each permanent magnetism magnetic pole and both sides of the edge thereof is positioned on the same periphery with each raised line outer peripheral face.
2. wide range speed control permagnetic synchronous motor according to claim 1 is characterized in that: the outer ring of described rotor is provided with the non magnetic retaining ring around its side face one circle.
3. wide range speed control permagnetic synchronous motor according to claim 1 is characterized in that: axial symmetry is provided with a plurality of triangle through holes on the described rotor yoke, and the axis of each triangle through hole all is parallel to the axis of rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201072545U CN202004609U (en) | 2011-04-13 | 2011-04-13 | Permanent magnet synchronous motor with wide speed regulation range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201072545U CN202004609U (en) | 2011-04-13 | 2011-04-13 | Permanent magnet synchronous motor with wide speed regulation range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202004609U true CN202004609U (en) | 2011-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201072545U Expired - Lifetime CN202004609U (en) | 2011-04-13 | 2011-04-13 | Permanent magnet synchronous motor with wide speed regulation range |
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| Country | Link |
|---|---|
| CN (1) | CN202004609U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102158033A (en) * | 2011-04-13 | 2011-08-17 | 上海特波电机有限公司 | Wide speed-regulation permanent-magnet synchronous motor |
| CN103887909A (en) * | 2012-12-21 | 2014-06-25 | 三星电机株式会社 | Axial flux permanent magnet motor |
| CN107346921A (en) * | 2017-09-15 | 2017-11-14 | 青岛理工大学 | P-m rotor and asynchronous starting permanent magnet synchronous motor with high anti-demagnetization capability |
| CN110191289A (en) * | 2019-06-05 | 2019-08-30 | 北京中星时代科技有限公司 | A kind of acquisition structure, acquisition device and the display methods of width Dynamic infrared image |
-
2011
- 2011-04-13 CN CN2011201072545U patent/CN202004609U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102158033A (en) * | 2011-04-13 | 2011-08-17 | 上海特波电机有限公司 | Wide speed-regulation permanent-magnet synchronous motor |
| WO2012139419A1 (en) * | 2011-04-13 | 2012-10-18 | 上海特波电机有限公司 | Wide speed-regulation permanent-magnet synchronous motor |
| CN103887909A (en) * | 2012-12-21 | 2014-06-25 | 三星电机株式会社 | Axial flux permanent magnet motor |
| CN107346921A (en) * | 2017-09-15 | 2017-11-14 | 青岛理工大学 | P-m rotor and asynchronous starting permanent magnet synchronous motor with high anti-demagnetization capability |
| CN110191289A (en) * | 2019-06-05 | 2019-08-30 | 北京中星时代科技有限公司 | A kind of acquisition structure, acquisition device and the display methods of width Dynamic infrared image |
| CN110191289B (en) * | 2019-06-05 | 2021-06-29 | 北京中星时代科技有限公司 | Acquisition structure, acquisition device and display method of wide dynamic infrared image |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |
|
| CX01 | Expiry of patent term |