CN203607946U - Permanent magnet motor rotator structure having high power density and motor employing structure - Google Patents
Permanent magnet motor rotator structure having high power density and motor employing structure Download PDFInfo
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- CN203607946U CN203607946U CN201320562146.6U CN201320562146U CN203607946U CN 203607946 U CN203607946 U CN 203607946U CN 201320562146 U CN201320562146 U CN 201320562146U CN 203607946 U CN203607946 U CN 203607946U
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Abstract
The utility model discloses a permanent magnet motor rotator structure having high power density and a motor employing the structure. The rotator structure comprises a rotator housing, rotator excitation magnetic steels and magnetic wedges; and the magnetic wedges are arranged in interspaces between N poles and S poles of the rotator excitation magnetic steels. The magnetic wedges has higher mechanical strength, and the size of the magnetic wedges can also be processed and controlled more precisely, so after the magnetic wedges are installed on a rotator, the magnetic wedges can play a role in support of the rotator excitation magnetic steels, and the mechanical strength of the rotator is enhanced. Furthermore, when the rotator structure is used, the thickness of magnetic yoke parts between each two rotator excitation magnetic steels is increased, so a phenomenon of magnetic saturation is eased, and the magnetic field capability generated by the rotator excitation magnetic steels is enhanced.
Description
Technical field
The utility model relates to a kind of rotor technical field, specifically, is a kind of rotor structure for permanent magnet motor of high power density and the motor of applying it.
Background technology
Motor refers to according to electromagnetic laws realizes the dynamo-electric a kind of calutron that can change.Permagnetic synchronous motor (PMSM) because its power density and electric efficiency are higher, thereby plays an increasingly important role in modern industry and household products.In order to improve the power density of motor, the magnet steel of rotor need to adopt the high magnetic energy permanent magnetic material as neodymium iron boron to make.The magnetic saturation phenomenon of motor rotor core is also just obvious.
Shown a basic structure with the permagnetic synchronous motor (PMSM) of external rotor at Fig. 1,2, it comprises rotor case 1 ＇, rotor-exciting magnet steel 2 ＇, stator core 3 ＇ and is wrapped in armature winding 4 ＇ on stator core 3 ＇.What Fig. 3 showed is the electromagnetic structure of this motor, and the N utmost point of rotor-exciting magnet steel 2 ＇ and the S utmost point are alternately installed on rotor case 1 ＇.Due to the restriction of volume and weight, motor rotor casing 1 ＇ can not do thicklyer.
As can see from Figure 4, when rotor case 1 ＇ as rotor yoke is when thinner, its magnetically saturated phenomenon can be more serious.And the magnetic saturation of rotor yoke must limit the ability of magnet steel generation effective magnetic field.But to many permagnetic synchronous motors, in order to reduce the weight of motor, the shell of rotor must do very thinly.In addition, in Fig. 4, it can also be seen that, the rotor case 3 the most serious places of ＇ magnetic saturation are positioned at the middle part of excitation magnet steel 2 ＇ of a pair of N utmost point and the S utmost point.
Realize high power density and high efficiency permagnetic synchronous motor (PMSM), the excitation magnet steel that must be able to make full use of rotor produces the ability in magnetic field.When having used high magnetic energy material as neodymium iron boron, the magnetically saturated degree of rotor yoke is more serious.This cannot be not fully exerted the performance of excitation magnet steel, and the power density of motor is restricted, and electric efficiency cannot fully improve.
Utility model content
The motor that main purpose of the present utility model is to provide a kind of rotor structure for permanent magnet motor of high power density and applies it, it can overcome above-mentioned defect, gives full play to the ability of excitation magnet steel generation excitation field; Improve the power density of permagnetic synchronous motor.
For achieving the above object, the technical scheme that the utility model adopts is:
A rotor structure for permanent magnet motor for high power density, it comprises rotor case, rotor-exciting magnet steel, it also further includes magnetic wedge; In space between the N utmost point and the S utmost point of the rotor-exciting magnet steel described in being located at.Magnetic wedge contacts jointly to form rotor yoke with rotor case inner surface face, thereby the thickness of the magnetic wedge of rotor is increased.
Above-mentioned magnetic wedge adopts ferromagnetic material to make and forms.
Above-mentioned magnetic wedge is one group, is to adopt the such ferromagnetic material split of electrical sheet to be shaped.
Preferably, above-mentioned magnetic wedge, comprises annulus and is fixedly arranged on one group of montant on annulus, in the space of this described group montant between the N utmost point and the S utmost point of described rotor-exciting magnet steel.
Preferably, above-mentioned magnetic forming wedge is cylindrical body, on the barrel of described cylindrical body, be evenly provided with can accommodating rotor-exciting magnet steel groove; Described rotor-exciting magnet steel is evenly installed in described groove, in the space of the bar between each groove between the N utmost point and the S utmost point of described rotor-exciting magnet steel.
Preferably, above-mentioned magnetic wedge is the magnet steel magnetic wedge that is provided with two symmetrical inclined-planes, and two described inclined-planes are respectively configured as α angle, and described α angle is greater than zero; Described magnet steel magnetic wedge joins by a pair of utmost point of two described inclined-planes and described rotor-exciting magnet steel.
Above-mentioned have magnetic wedge to adopt permanent-magnet steel to be made.
Preferably, above-mentioned magnetic wedge also includes ferromagnetic magnetic wedge, and described magnet steel magnetic wedge and ferromagnetic magnetic wedge successively interval are located in the space between the N utmost point and the S utmost point of described rotor-exciting magnet steel.
A kind of permagnetic synchronous motor, it comprises above-mentioned motor rotor construction and stator structure, described stator structure comprises stator core and is wrapped in the armature winding on stator core.
Adopt after technique scheme, because magnetic wedge is to be made up of the material resemble electrical sheet, there is higher mechanical strength, size also can be carried out the very accurate of machining control, thereby, it also can carry out supporting role to rotor-exciting magnet steel after being installed on rotor, strengthens the mechanical strength of rotor.In addition, in use, because the thickness of the yoke part between two rotor-exciting magnet steel is increased, magnetically saturated phenomenon is eased, and the magnetic field ability that rotor-exciting magnet steel produces is strengthened.
Accompanying drawing explanation
Fig. 1 is the perspective view of existing permagnetic synchronous motor;
Fig. 2 is the combination schematic diagram of existing permagnetic synchronous motor;
Fig. 3 is the electromagnetic structure schematic diagram of existing permagnetic synchronous motor;
Fig. 4 is the Distribution of Magnetic Field situation of existing permagnetic synchronous motor;
Fig. 5 is the perspective view of the utility model rotor structure embodiment mono-;
Fig. 6 is the planar structure schematic diagram of the utility model rotor structure example example one;
Fig. 7 is the perspective view of the utility model synchronous machine embodiment mono-;
Fig. 8 is the planar structure schematic diagram of the utility model synchronous machine embodiment mono-;
Fig. 9 is the Distribution of Magnetic Field figure of the synchronous machine of the utility model embodiment mono-;
Figure 10 is the perspective view of the utility model synchronous machine embodiment bis-;
Figure 11 is the perspective view of the utility model synchronous machine embodiment tri-;
Figure 12 is the structural representation of the utility model synchronous machine embodiment tetra-;
Figure 13 is the magnetizing direction of magnetic wedge and the magnetizing direction of excitation magnet steel and the main field circuit schematic diagram of the utility model synchronous machine embodiment tetra-;
Figure 14 is the Distribution of Magnetic Field figure of the utility model synchronous machine embodiment tetra-;
Figure 15 is the structural representation of the utility model synchronous machine embodiment five.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment mono-:
Shown in figure 5,6, the utility model discloses a kind of motor rotor construction of high power density, it comprises rotor case 1, rotor-exciting magnet steel 2, magnetic wedge 5, wherein:
Shown in figure 9, in use, because the thickness of the yoke part between two rotor-exciting magnet steel 2 is increased, magnetically saturated phenomenon is eased, and the magnetic field ability that rotor-exciting magnet steel 2 produces is strengthened.
Shown in figure 7,8, the invention also discloses a kind of permagnetic synchronous motor of applying above-mentioned rotor structure, it comprises rotor case 1, rotor-exciting magnet steel 2, stator core 3, armature winding 4 and magnetic wedge 5, wherein:
Armature winding 4 is wrapped on stator core 3.
With reference to figure 9, because magnetic wedge 3 is to be made with ferrimagnet, therefore, it not only has mechanical support effect, and the rotor strength of whole motor is strengthened equally; And, the thickness of two yoke parts between rotor-exciting magnet steel 2 is increased, magnetically saturated phenomenon is eased, and the magnetic field ability that rotor-exciting magnet steel 2 produces is strengthened.
Embodiment bis-:
Shown in Figure 10, it is the structural representation of permagnetic synchronous motor embodiment bis-of the present utility model, and compared with embodiment mono-, its difference is:
In the present embodiment, magnetic wedge 5, comprises an annulus 51 and is located at one group of montant 52 on annulus 51, and in the present embodiment, this montant 52 is integrally formed with annulus 51, when use, in the space of montant 52 between the N of rotor-exciting magnet steel 2 utmost point and the S utmost point.
Integrated design, better controls assembly precision, assembles more convenient.And better strengthen the mechanical strength of rotor.
Embodiment tri-:
Shown in Figure 11, it is the structural representation of the embodiment tri-of the utility model permagnetic synchronous motor, and compared with embodiment mono-, its difference is:
In the present embodiment, magnetic wedge 5, it is configured as cylindrical body, on the barrel of this cylindrical body, be evenly provided with can accommodating rotor-exciting magnet steel 2 groove 53.When use, rotor-exciting magnet steel 2 is evenly installed in this groove 53, in the space of the bar 52 between each groove 53 between the N of rotor-exciting magnet steel 2 utmost point and the S utmost point.The structure of this magnetic wedge 5, not only strengthened the rotor yoke thickness in the space between the N of rotor-exciting magnet steel 2 utmost point and the S utmost point of rotor case 1, also strengthened contact with rotor-exciting magnet steel 2 thickness of position of rotor case 1 simultaneously.Therefore, it not only has mechanical support effect, and the rotor strength of whole motor is strengthened; And, the thickness of whole rotor yoke is increased, magnetically saturated phenomenon is eased, and the magnetic field ability that rotor-exciting magnet steel 2 produces is strengthened.
Embodiment tetra-:
Shown in Figure 12, it is the structural representation of the embodiment tetra-of the utility model permagnetic synchronous motor, and compared with embodiment mono-, its difference is:
In the present embodiment, magnetic wedge 5 is to adopt high-performance permanent-magnet steel to be made.And magnetic wedge 5 is provided with two symmetrical inclined-planes 54, and this inclined-plane 54 is configured as α angle, and this α angle is greater than zero.In the time of assembling, magnetic wedge 5 joins by a pair of utmost point of these two inclined-planes 54 and rotor-exciting magnet steel 2.Shown in Figure 13, be installed to after the yoke of rotor case 1, the difference of the magnetizing direction of magnetic wedge 5 and rotor-exciting magnet steel 2, both approach vertical.The contact-making surface of the magnetizing direction of magnetic wedge 5 and rotor-exciting magnet steel 2 can make a part of magnetic field that excitation magnet steel produces pass by from magnetic wedge 5, thereby slows down the magnetic saturation phenomenon of rotor yoke; In addition, the magnetic direction of the magnetic direction of magnetic wedge 5 and rotor-exciting magnet steel 2 can form field circuit, sees the magnetic loop 61 of Figure 13.Therefore, magnetic wedge 5 can be strengthened the magnetic field of motor gas-gap, thereby improves the power density of motor and the efficiency of motor.Shown in Figure 14, therefrom can find out, a part of magnetic field that rotor-exciting magnet steel 2 produces is passed through from magnetic wedge 5, thereby has alleviated the degree of saturation of rotor yoke.
Embodiment five:
Shown in Figure 15, it is the structural representation of the embodiment five of the utility model permagnetic synchronous motor, and compared with embodiment tetra-, its difference is:
In the present embodiment, magnetic wedge 5 comprises magnet steel magnetic wedge 55 and ferromagnetic magnetic wedge 56, this magnet steel magnetic wedge 55 is identical with magnetic wedge 5 structures in embodiment tetra-, has symmetrical inclined-plane 551,552, and magnet steel magnetic wedge 55 joins by a pair of utmost point of two inclined-planes 551,552 and rotor-exciting magnet steel 2.Magnet steel magnetic wedge 55 and ferromagnetic magnetic wedge 56 successively interval are located in the space between the N utmost point and the S utmost point of rotor-exciting magnet steel 2.
The magnetic wedge 5 of this structure is installed to after the yoke of rotor, the magnetizing direction of magnet steel magnetic wedge 55 and rotor-exciting magnet steel 2 differences, both approach vertical.The magnetizing direction of magnet steel magnetic wedge 55 and can make a part of magnetic field that rotor-exciting magnet steel 2 produces pass by from magnetic wedge magnet steel with the contact-making surface of rotor-exciting magnet steel 2.This structure, on the one hand, can improve the magnetic saturation degree of rotor yoke, and increases the power density of motor.On the other hand, owing to adopting ferromagnetic material to make magnetic wedge, magnet steel is supported, and the mechanical strength of rotor is enhanced.Moreover, adopt the rotor that mixes magnetic wedge, can realize the efficiency of motor and the improvement motor of high power density.
The above; it is only preferably embodiment of the utility model; but protection range of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; the variation that can expect easily or replacement, within all should being encompassed in protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.
Claims (9)
1. a rotor structure for permanent magnet motor for high power density, it comprises rotor case, rotor-exciting magnet steel, it is characterized in that: it also further includes magnetic wedge; In space between the N utmost point and the S utmost point of the rotor-exciting magnet steel described in being located at.
2. the rotor structure for permanent magnet motor of high power density as claimed in claim 1, is characterized in that: described magnetic wedge adopts ferromagnetic material to make and forms.
3. the rotor structure for permanent magnet motor of high power density as claimed in claim 1 or 2, is characterized in that: described magnetic wedge is one group, is to adopt ferromagnetic material split to be shaped.
4. the rotor structure for permanent magnet motor of high power density as claimed in claim 1 or 2, it is characterized in that: described magnetic wedge, comprise annulus and be fixedly arranged on one group of montant on annulus, in the space of this described group montant between the N utmost point and the S utmost point of described rotor-exciting magnet steel, and there is face to contact with rotor case inner surface, jointly to form the yoke of rotor.
5. the rotor structure for permanent magnet motor of high power density as claimed in claim 1 or 2, is characterized in that: described magnetic forming wedge is cylindrical body, on the barrel of described cylindrical body, be evenly provided with can accommodating rotor-exciting magnet steel groove; Described rotor-exciting magnet steel is evenly installed in described groove, in the space of the bar between each groove between the N utmost point and the S utmost point of described rotor-exciting magnet steel; The cylinder that magnetic wedge forms contacts with rotor case inner surface face, jointly to form the yoke of rotor.
6. the rotor structure for permanent magnet motor of high power density as claimed in claim 1, is characterized in that: described magnetic wedge is the magnet steel magnetic wedge that is provided with two symmetrical inclined-planes, and two described inclined-planes are respectively configured as α angle, and described α angle is greater than zero; Described magnet steel magnetic wedge joins by a pair of utmost point of two described inclined-planes and described rotor-exciting magnet steel.
7. the rotor structure for permanent magnet motor of high power density as claimed in claim 6, is characterized in that: described magnetic wedge adopts permanent-magnet steel to be made.
8. the rotor structure for permanent magnet motor of high power density as claimed in claim 6, it is characterized in that: described magnetic wedge also includes ferromagnetic magnetic wedge, described magnet steel magnetic wedge and ferromagnetic magnetic wedge successively interval are located in the space between the N utmost point and the S utmost point of described rotor-exciting magnet steel.
9. a permagnetic synchronous motor, is characterized in that: it comprises claim 1-8 arbitrary described motor rotor construction and stator structure, and described stator structure comprises stator core and is wrapped in the armature winding on stator core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320562146.6U CN203607946U (en) | 2013-09-10 | 2013-09-10 | Permanent magnet motor rotator structure having high power density and motor employing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320562146.6U CN203607946U (en) | 2013-09-10 | 2013-09-10 | Permanent magnet motor rotator structure having high power density and motor employing structure |
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| Publication Number | Publication Date |
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| CN203607946U true CN203607946U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320562146.6U Expired - Lifetime CN203607946U (en) | 2013-09-10 | 2013-09-10 | Permanent magnet motor rotator structure having high power density and motor employing structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104426265A (en) * | 2013-09-10 | 2015-03-18 | 峰岹科技（深圳）有限公司 | Permanent magnet motor rotor structure with high power density and motor with same |
-
2013
- 2013-09-10 CN CN201320562146.6U patent/CN203607946U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104426265A (en) * | 2013-09-10 | 2015-03-18 | 峰岹科技（深圳）有限公司 | Permanent magnet motor rotor structure with high power density and motor with same |
| CN104426265B (en) * | 2013-09-10 | 2018-06-01 | 峰岹科技（深圳）有限公司 | The rotor structure for permanent magnet motor of high power density a kind of and apply its motor |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000 Shenzhen Software Park, 1 Shenzhen Software Park (2 phase), No. 2, No. 1, Nanshan District high tech District, Shenzhen City, Guangdong province (limited office) Patentee after: Fengji Technology (Shenzhen) Co.,Ltd. Address before: 203, room 11, building two, two software park, Shenzhen Road, Nanshan District science and technology, Guangdong, Shenzhen 518057, China Patentee before: FORTIOR TECHNOLOGY (SHENZHEN) Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140521 |
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| CX01 | Expiry of patent term |