CN202034839U - Magnetic field rotor punch with high air gap magnetic flux density - Google Patents
Magnetic field rotor punch with high air gap magnetic flux density Download PDFInfo
- Publication number
- CN202034839U CN202034839U CN2011201130095U CN201120113009U CN202034839U CN 202034839 U CN202034839 U CN 202034839U CN 2011201130095 U CN2011201130095 U CN 2011201130095U CN 201120113009 U CN201120113009 U CN 201120113009U CN 202034839 U CN202034839 U CN 202034839U
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- flute profile
- trough
- air gap
- flux density
- magnetic field
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The utility model discloses a magnetic field rotor punch with high air gap magnetic flux density, comprising a punch body, a rotating shaft hole, a keyway, and a plurality of troughs arranged on the punch body, wherein the troughs have W-shaped structures and comprise a first trough, a second trough, a third trough and a fourth trough; furthermore, magnetic short-circuit bridges are arranged between the first trough and the second trough, between the second trough and the third trough, and between the third trough and the fourth trough; a plurality of finite strength seals are arranged at the periphery of the punch body; the magnetic field rotor punch with high air gap magnetic flux density adopts W-shaped multi-pole tangent excitation so that the air gap magnetic flux density is improved by 1.5 times to 2 times; the finite strength seal is adopted so that the consumption of a permanent magnet is minimum and the cost is minimum; by adopting the magnetic short-circuit bridge structure, when the sudden short circuit failure occurs to the outside of the motor, a short circuit passage can be provided for a strong demagnetization magnetic field generated by a motor winding, thus improving the survival capability of the motor.
Description
Technical field
The utility model relates to a kind of motor rotor punching sheet, especially relates to a kind of high air gap flux density magnetic field rotor punching.
Background technology
The high air gap flux density magnetic field structure design of rare-earth permanent-magnet electric machine, seek exactly when reducing the motor electromagnetic load, also take into account the parameter of electric machine, runnability, economy and reliability, therefore study the electromagnetic load of motor and the equilibrium relation of motor performance and economy, after particularly rare earth permanent-magnetic material was applied to motor as a kind of ferromagnetic material, high air gap flux density magnetic field structure design was extremely important.
At present, the many employings of the permanent magnet arrangement of traditional rare-earth permanent-magnet electric machine are radially excitatory, promptly are to offer the flute profile that several radially distribute on rotor punching, and this arrangement makes that the air gap flux density of motor is lower, influences the overall performance of motor.
The utility model content
The purpose of this utility model is to provide a kind of high air gap flux density magnetic field rotor punching, and it has simple in structure, saves cost, the high and characteristics safe and reliable to operation of air gap flux density.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of high air gap flux density magnetic field rotor punching, it comprises punching body, shaft hole, keyway and is opened in several flute profiles on the punching body, wherein, described flute profile is " W " shape structure, comprises first flute profile, second flute profile, groove-shaped and the 4th flute profile, described first flute profile and second flute profile, second flute profile and groove-shaped, be provided with the magnet short-cut path bridge between groove-shaped and the 4th flute profile, and offer several limited intensity on the periphery of described punching body and seal.
Especially, offer the flute profile of 4 " W " shape structures on the described punching body.
Especially, described first flute profile and second flute profile, the angle between groove-shaped and the 4th flute profile is 84 °, and the angle between described second flute profile and the groove-shaped is 78 °.
Especially, described limited intensity is sealed to being uniformly distributed in the manhole of punching body periphery.
The beneficial effects of the utility model are described high air gap flux density magnetic field rotor punching:
1) W shape " multipole tangentially excitatory " is compared with the permanent magnet arrangement of general " radially excitatory ", can be so that air gap flux density improves 1.5 times to 2 times.
2) rotor is damaged is foundation to satisfy centrifugal force in the intensity restriction of adopting " limited intensity is sealed ", and like this, the magnetic track of " being sealed short circuit " is minimum, and the consumption of permanent magnet is minimum, the cost minimum.
3) " magnet short-cut path bridge " structure when the outside generation of motor suddenly-applied short circuit fault, can provide a short-channel for the powerful demagnetizing field that motor windings produces, and avoids permanent magnet to lose efficacy because of demagnetization, improves the survival ability of motor.
Description of drawings
With embodiment the utility model is described in further detail with reference to the accompanying drawings below.
Fig. 1 is the structural representation of the high air gap flux density of the utility model magnetic field rotor punching.
Among the figure:
1, punching body; 2, shaft hole; 3, keyway; 4, flute profile; 40, first flute profile; 41, second flute profile; 42, groove-shaped; 43, the 4th flute profile; 5, magnet short-cut path bridge; 6, limited intensity is sealed.
Embodiment
Please refer to shown in Figure 1ly, Fig. 1 is the structural representation of the high air gap flux density of the utility model magnetic field rotor punching; In present embodiment, a kind of high air gap flux density magnetic field rotor punching, it comprises punching body 1, shaft hole 2, keyway 3 and be opened in several flute profiles 4 on the punching body 1, described flute profile 4 is by first flute profile 40, second flute profile 41, " W " shape structure that groove-shaped 42 and the 4th flute profile 43 are formed, described first flute profile 40 and second flute profile 41, second flute profile 41 and the groove-shaped 42, be provided with magnet short-cut path bridge 5 between groove-shaped 42 and the 4th flute profile 43, described first flute profile 40 and second flute profile 41, included angle A between groove-shaped 42 and the 4th flute profile 43 is 84 °, included angle B between described second flute profile 41 and the groove-shaped 42 is 78 °, and offers the limited intensity of several equally distributed circles on the periphery of described punching body 1 and seal 6.
Above-mentioned high air gap flux density magnetic field rotor punching adopts W shape " multipole tangentially excitatory " to compare with the permanent magnet arrangement of general " radially excitatory ", can be so that air gap flux density improves 1.5 times to 2 times, rotor is damaged is foundation to satisfy centrifugal force to adopt intensity restriction that limited intensity seals, like this, the magnetic track that " is sealed short circuit " is minimum, the consumption of permanent magnet is minimum, the cost minimum, be provided with the magnet short-cut path bridge construction, when the outside generation of motor suddenly-applied short circuit fault, can provide a short-channel for the powerful demagnetizing field that motor windings produces, avoid permanent magnet to lose efficacy, improve the survival ability of motor because of demagnetization.
Claims (4)
1. high air gap flux density magnetic field rotor punching, it comprises punching body, shaft hole, keyway and is opened in several flute profiles on the punching body, it is characterized in that: described flute profile is " W " shape structure, comprise first flute profile, second flute profile, groove-shaped and the 4th flute profile, described first flute profile and second flute profile, second flute profile and groove-shaped are provided with the magnet short-cut path bridge between groove-shaped and the 4th flute profile, and offer several limited intensity on the periphery of described punching body and seal.
2. high air gap flux density according to claim 1 magnetic field rotor punching; It is characterized in that: the flute profile that offers 4 " W " shape structures on the described punching body.
3. high air gap flux density according to claim 1 magnetic field rotor punching; It is characterized in that: described first flute profile and second flute profile, the angle between groove-shaped and the 4th flute profile is 84 °, and the angle between described second flute profile and the groove-shaped is 78 °.
4. high air gap flux density according to claim 1 magnetic field rotor punching; It is characterized in that: described limited intensity is sealed to being uniformly distributed in the manhole of punching body periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201130095U CN202034839U (en) | 2011-04-18 | 2011-04-18 | Magnetic field rotor punch with high air gap magnetic flux density |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201130095U CN202034839U (en) | 2011-04-18 | 2011-04-18 | Magnetic field rotor punch with high air gap magnetic flux density |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202034839U true CN202034839U (en) | 2011-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201130095U Expired - Fee Related CN202034839U (en) | 2011-04-18 | 2011-04-18 | Magnetic field rotor punch with high air gap magnetic flux density |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202034839U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130522A (en) * | 2011-04-18 | 2011-07-20 | 无锡新大力电机有限公司 | High-air gap flux density magnetic field rotor sheet |
| CN105790531A (en) * | 2016-05-11 | 2016-07-20 | 山东理工大学 | Brushless electromagnetic and built-in combined-type permanent magnet series-parallel generator |
| CN105871148A (en) * | 2016-05-11 | 2016-08-17 | 山东理工大学 | Automotive combined permanent magnet and brushless electromagnet series-parallel power generation device |
| CN105871152A (en) * | 2016-05-11 | 2016-08-17 | 山东理工大学 | Claw-pole electromagnetic and built-in biradial permanent magnet driving motor for electric automobile |
-
2011
- 2011-04-18 CN CN2011201130095U patent/CN202034839U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130522A (en) * | 2011-04-18 | 2011-07-20 | 无锡新大力电机有限公司 | High-air gap flux density magnetic field rotor sheet |
| CN105790531A (en) * | 2016-05-11 | 2016-07-20 | 山东理工大学 | Brushless electromagnetic and built-in combined-type permanent magnet series-parallel generator |
| CN105871148A (en) * | 2016-05-11 | 2016-08-17 | 山东理工大学 | Automotive combined permanent magnet and brushless electromagnet series-parallel power generation device |
| CN105871152A (en) * | 2016-05-11 | 2016-08-17 | 山东理工大学 | Claw-pole electromagnetic and built-in biradial permanent magnet driving motor for electric automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20170418 |