CN201146411Y - Magnetic pole structure of switch reluctance motor - Google Patents
Magnetic pole structure of switch reluctance motor Download PDFInfo
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- CN201146411Y CN201146411Y CNU2007201310941U CN200720131094U CN201146411Y CN 201146411 Y CN201146411 Y CN 201146411Y CN U2007201310941 U CNU2007201310941 U CN U2007201310941U CN 200720131094 U CN200720131094 U CN 200720131094U CN 201146411 Y CN201146411 Y CN 201146411Y
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Abstract
A magnetic pole structure of a switched reluctance motor comprises a shaft, a rotor yoke, a rotor magnetic pole, a stator yoke and a stator magnetic pole, the end surfaces of the stator magnetic pole and the rotor magnetic pole which are mutually matched are shaped like a sine convex arc, or the end part of the stator magnetic pole is shaped like the convex arc, the end part of the rotor magnetic pole is shaped like the sine convex arc, or the end part of the stator magnetic pole is shaped like the sine convex arc, and the end part of the rotor magnetic pole is shaped like a concave arc. The magnetic pole structure can greatly reduce the radial electromagnetic force under the situation of maintaining the tangential electromagnetic force between the stator magnetic pole and the rotor magnetic pole to be unchanged basically by changing the structure of the end surfaces of the original motor magnetic poles. Therefore, the magnetic pole structure can weaken the vibration of the motor, reduce the torque fluctuation, improve the performance of the motor, prolong the service life of the motor, reduce the noise and have simple structure, good using effect, environmental protection and wide practicality.
Description
Technical field
The utility model relates to a kind of field structure of switched reluctance machines, is particularly useful for the drive motors of industrial departments such as motor vehicle, mine, oil field, textile machine.
Background technology
In traditional switched reluctance machines, the magnetic pole of the stator end face structure is rendered as the concaved circular cambered surface structure, and the rotor magnetic pole end face is the convex arc surface structure, switched reluctance machines is owing to adopt biconvex electrode structure and switch form power supply, its intrinsic torque ripple is big, causes noise to increase, and influences operating efficiency.Its reason is: the be in operation electromagnetic force that produces of motor can resolve into the component of both direction, tangential electromagnetic force component and radial electromagnetic force component, the electromagnetic torque that tangential electromagnetic force forms motor just moves needed torque, and can not producing motor, radial electromagnetic force rotates needed electromagnetic torque, its effect is the air gap of trying hard to compress between stator and rotor, because stator is a shell structure, therefore can form compression, extensional vibration inevitably, by the outside shot noise of casing.
The utility model content
The purpose of this utility model is the weak point at prior art, a kind of field structure of switched reluctance machines is provided,, reduces the radial electromagnetic force between the stator and rotor magnetic pole by changing the motor pole end face structure, thereby the reduction noise, the operating efficiency of raising motor.
Switched reluctance machines field structure of the present utility model, comprise axle, rotor yoke, rotor magnetic pole, stator yoke portion and magnetic pole of the stator, the magnetic pole of the stator that cooperatively interacts and the end face of rotor magnetic pole are sinusoidal convex, or the magnetic pole of the stator end is that dome arc, rotor magnetic pole end are sinusoidal convexs, or the magnetic pole of the stator end is that sinusoidal convex, rotor magnetic pole end are concave arc shape.
The utility model is transformed the end face structure of rotor magnetic pole and magnetic pole of the stator, and it is made into sinusoidal convex globoidal structure.Because the power that switched reluctance machines when work stator and rotor are subjected to is Maxwell force, its size and air gap flux density square are directly proportional, and direction is consistent with magnetic line of force path direction.According to the magnetic resistance minimum principle, the magnetic line of force is always pressed the path closure of magnetic resistance minimum.After adopting sinusoidal field structure, change has taken place in the direction that the magnetic line of force passes stator and rotor pole surface, make the Maxwell force that produces that corresponding change take place, influence to electromagnetic force between motor stator, rotor magnetic pole is: (1) same position, the direction of electromagnetic force changes between stator, rotor magnetic pole, cause stator, the suffered radial electromagnetic force component of rotor magnetic pole to diminish, tangential electromagnetic force divides quantitative change big.(2) field structure increases average air gap, causes the electromagnetic force between stator, rotor magnetic pole to reduce.And the tangential electromagnetic force component between stator, rotor magnetic pole is constant substantially, and the radial electromagnetic force component has but reduced greatly.Compare with existing switched reluctance machines structure, by changing original motor pole end face structure, keeping having reduced radial electromagnetic force greatly under the constant substantially situation of tangential electromagnetic force between stator and rotor magnetic pole.Thereby make motor oscillating weaken, torque ripple reduces, and has not only improved motor performance, has prolonged electrical machinery life, and has reduced noise, and it is simple in structure, and fault-tolerant ability is stronger, and result of use is good, and environmental protection has practicality widely.
Description of drawings
Fig. 1 is field structure example one schematic diagram of switched reluctance machines of the present invention.
Fig. 2 is field structure example two schematic diagrames of switched reluctance machines of the present invention.
Fig. 3 is field structure example three schematic diagrames of switched reluctance machines of the present invention.
Among the figure: 1-axle, 2-rotor yoke, 3-rotor magnetic pole, 4-stator yoke portion, 5-magnetic pole of the stator, the sinusoidal convex of 6-, 7-dome arc, 8-concave arc shape.
Embodiment
The utility model will be further described below in conjunction with the embodiment in the accompanying drawing:
The field structure of switched reluctance machines of the present utility model is an example with the field structure of the switched reluctance machines of three-phase 12/8 utmost point, and its axle 1, rotor yoke 2, rotor magnetic pole 3, stator yoke portion 4 and magnetic pole of the stator 5 constitute.
Shown in Figure 1, the magnetic pole of the stator 5 that cooperatively interacts and the end face of rotor magnetic pole 3, magnetic pole of the stator 5 is sinusoidal convex 6 with rotor magnetic pole 3.
Shown in Figure 2, the magnetic pole of the stator 5 that cooperatively interacts and the end face of rotor magnetic pole 3, magnetic pole of the stator 5 ends are that dome arc 7, rotor magnetic pole 3 ends are sinusoidal convexs 6.
Shown in Figure 3, the magnetic pole of the stator 5 that cooperatively interacts and the end face of rotor magnetic pole 3, magnetic pole of the stator 5 ends are that sinusoidal convex 6, rotor magnetic pole 3 ends are concave arc shape 8.
Claims (1)
1, a kind of switched reluctance machines field structure, comprise axle (1), rotor yoke (2), rotor magnetic pole (3), stator yoke portion (4) and magnetic pole of the stator (5), it is characterized in that: the magnetic pole of the stator that cooperatively interacts (5) is sinusoidal convex (6) with the end face of rotor magnetic pole (3), or magnetic pole of the stator (5) end is that sinusoidal convex (6), rotor magnetic pole (3) end are dome arc (7), or magnetic pole of the stator (5) end is that concave arc shape (8), rotor magnetic pole (3) end are sinusoidal convex (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201310941U CN201146411Y (en) | 2007-12-18 | 2007-12-18 | Magnetic pole structure of switch reluctance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201310941U CN201146411Y (en) | 2007-12-18 | 2007-12-18 | Magnetic pole structure of switch reluctance motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201146411Y true CN201146411Y (en) | 2008-11-05 |
Family
ID=40083298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201310941U Expired - Fee Related CN201146411Y (en) | 2007-12-18 | 2007-12-18 | Magnetic pole structure of switch reluctance motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201146411Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982931A (en) * | 2010-10-29 | 2011-03-02 | 哈尔滨工业大学 | Multiphase magnetic resistance motor with pulse torque compensation structure |
-
2007
- 2007-12-18 CN CNU2007201310941U patent/CN201146411Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982931A (en) * | 2010-10-29 | 2011-03-02 | 哈尔滨工业大学 | Multiphase magnetic resistance motor with pulse torque compensation structure |
| CN101982931B (en) * | 2010-10-29 | 2012-08-08 | 哈尔滨工业大学 | Multiphase magnetic resistance motor with pulse torque compensation structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081105 Termination date: 20111218 |