CN206517180U - A kind of permanent-magnetic synchronous motor rotor and permagnetic synchronous motor - Google Patents
A kind of permanent-magnetic synchronous motor rotor and permagnetic synchronous motor Download PDFInfo
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- CN206517180U CN206517180U CN201621110522.8U CN201621110522U CN206517180U CN 206517180 U CN206517180 U CN 206517180U CN 201621110522 U CN201621110522 U CN 201621110522U CN 206517180 U CN206517180 U CN 206517180U
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- permanent magnet
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Abstract
The utility model discloses a kind of permanent-magnetic synchronous motor rotor and permagnetic synchronous motor.The permanent-magnetic synchronous motor rotor that the utility model is provided, including rotor core, permanent magnet, the rotor core is radially arranged multipair permanent magnet trough, the V-shaped distribution of each pair permanent magnet trough, the tip of the V-type is towards rotating shaft, and the permanent magnet is embedded in the permanent magnet trough, and the permanent magnet and the shape of the permanent magnet trough match, the cross section of wherein described permanent magnet is trapezoidal, and along the rotor core, radially the width of the permanent magnet cross section is tapered into from outside to inside.The invention also discloses a kind of permagnetic synchronous motor with above-mentioned permanent-magnetic synchronous motor rotor.The permanent-magnetic synchronous motor rotor and permagnetic synchronous motor provided according to the utility model, can further the anti-demagnetization capability of lifting motor, improve motor output torque.
Description
Technical field
The utility model is related to permagnetic synchronous motor technical field, more particularly to a kind of permanent-magnetic synchronous motor rotor.This reality
A kind of permagnetic synchronous motor with above-mentioned permanent-magnetic synchronous motor rotor is further related to new.
Background technology
Permagnetic synchronous motor provides excitation with permanent magnet so that electric machine structure is relatively simple, reduces processing and assembly fee
With improving the reliability of motor running；Again because without exciting current, without excitation loss, improving the efficiency of motor
And power density, as in every field using a kind of more and more extensive motor.
At present, the permanent magnet material inserted in rotor is divided into two kinds, and one kind is ferrite, and one kind is neodymium iron boron.Using
In the rotor of Nd-Fe-B permanent magnet material, the torque of generation is big, but its is expensive, and can consume substantial amounts of rare earth resources, right
Its exploitation also results in environmental pollution.Using ferrite permanent-magnet materials rotor in, due to ferrite permanent-magnet materials remanent magnetism compared with
Low, in order to produce enough torques, the volume of permanent magnet must accomplish enough big.The HCJ of ferrite permanent-magnet materials
Also smaller, corresponding anti-demagnetization capability is weaker.
It is in the prior art lifting torque, using V-type distribution more than permanent-magnetic synchronous motor rotor.Rotor bag as shown in Figure 1
Include rotor core and permanent magnet, rotor core has been radially arranged multiple permanent magnet troughs, and the permanent magnet trough of two different magnetic poles is simultaneously
Row is set, in the permanent magnet trough that the permanent magnet insertion of square-section and its section match.Situation about being limited in rotor internal-and external diameter
The permanent magnet of lower use different magnetic poles is arranged in parallel, can increase permanent magnet consumption, lifts torque.
Because magnetic resistance is small near the both ends of rotor outer circle permanent magnet, stator is easily concentrated on permanent magnet both ends
Coil effect counter magnetic field, there is serious demagnetization in permanent magnet both ends so that torque is reduced, even more so that motor can not be just
Often work.But permanent magnet uses such a arrangement, and permanent magnet width is limited by rotor internal diameter size can not accomplish that comparison is thick.
Therefore, how further lifting motor anti-demagnetization capability, improve motor output torque, as people in the art
Member's technical barrier urgently to be resolved hurrily.
Utility model content
First purpose of the present utility model is to provide a kind of permanent-magnetic synchronous motor rotor, and the permanent-magnetic synchronous motor rotor can
With the anti-demagnetization capability of further lifting motor, improve motor output torque.Second purpose of the present utility model is to provide one
Plant the permagnetic synchronous motor with above-mentioned permanent-magnetic synchronous motor rotor.
In order to realize above-mentioned first purpose, the utility model provides a kind of permanent-magnetic synchronous motor rotor, including rotor
Iron core, permanent magnet, the permanent magnet trough of the axially disposed multipair V-shaped distribution of rotor core, V-shaped point of each pair permanent magnet trough
Cloth, the tip of the V-type is towards rotating shaft, and the permanent magnet is embedded in the permanent magnet trough, the permanent magnet and the permanent magnet
The shape of groove matches, wherein, the cross section of the permanent magnet be it is trapezoidal, it is radially described from outside to inside along the rotor core
The width of permanent magnet cross section is tapered into.
It is preferred that, the outer surface of each permanent magnet trough in permanent magnet trough described in each pair and adjacent another pair permanent magnet
The outer surface of corresponding permanent magnet trough in groove is parallel.
It is preferred that, every piece of permanent magnet is each perpendicular to it close to the upper surface of rotor core with the lower surface close to rotating shaft
Outer surface.
It is preferred that, the distance between two adjacent parallel external surfaces are H, 1mm≤H≤4mm.
It is preferred that, the periphery of the rotor core and adjacent two permanent magnet trough corresponding positions there is default width
K tangent plane is spent, the tangent plane is vertical with the outer surface.
It is preferred that, the predetermined width K of the tangent plane is more than or equal to twice of H.
It is preferred that, the permanent magnet includes the first permanent magnet and the second permanent magnet, first permanent magnet and described second
Permanent magnet is radially embedded in the permanent magnet trough side by side from outside to inside along the rotor core.
It is preferred that, the coercivity of material of the material than second permanent magnet of first permanent magnet is high.
It is preferred that, there is appropriately distance between first permanent magnet, two end faces adjacent with second permanent magnet.
It is preferred that, set between first permanent magnet, two end faces adjacent with second permanent magnet every magnetic bridge.
The permanent-magnetic synchronous motor rotor that the utility model is provided, permanent magnet cross section uses trapezium structure, along the rotor
Radially the width of the permanent magnet cross section is tapered into iron core from outside to inside, can be made full use of rotor space, be made insertion
The amount of permanent magnet is more, further improves motor output torque ability.Width close to the permanent magnet cross section of rotor core external diameter
Degree is wider, and same demagnetization magnetic potential is acted on permanent magnet, and the anti-demagnetization capability of permanent magnet is improved.
The utility model additionally provides a kind of permagnetic synchronous motor, including above-mentioned permanent-magnetic synchronous motor rotor.Due to upper
The permanent-magnetic synchronous motor rotor stated has above-mentioned technique effect, and the permagnetic synchronous motor with the permanent-magnetic synchronous motor rotor also should
With corresponding technique effect.
Brief description of the drawings
, below will be to institute in embodiment in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only described in the utility model
Some embodiments, for those of ordinary skill in the art, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of common permanent-magnetic synchronous motor rotor in the prior art；
The structural representation for the permanent-magnetic synchronous motor rotor that Fig. 2 provides for a kind of embodiment of the utility model；
Fig. 3 is the structural representation of the trimming of permanent-magnetic synchronous motor rotor in Fig. 2；
Fig. 4 is the operation principle schematic diagram of permanent-magnetic synchronous motor rotor in Fig. 3；
The structural representation for the permanent-magnetic synchronous motor rotor that Fig. 5 provides for another embodiment of the utility model；
The structural representation for the permanent-magnetic synchronous motor rotor that Fig. 6 provides for the utility model 3rd embodiment.
Wherein, in Fig. 2-Fig. 6：
Rotor core 1, permanent magnet 2, permanent magnet trough 3, every magnetic bridge 4, rotor 5, the first permanent magnet 21, the second permanent magnet
22。
Embodiment
The utility model is described below based on embodiment, but the utility model is not restricted to these implementations
Example.
Fig. 2 is refer to, the permanent-magnetic synchronous motor rotor 5 that the utility model is provided includes rotor core 1, permanent magnet 2, described
The permanent magnet trough 3 of the axially disposed multipair V-shaped distribution of rotor core 1, the V-shaped distribution of each pair permanent magnet trough 3, the V-type
Tip is towards rotating shaft, and the permanent magnet 2 is embedded in the permanent magnet trough 3, the permanent magnet 2 and the shape of the permanent magnet trough 3
Match, wherein, the cross section of the permanent magnet 2 is trapezoidal, and along the rotor core, radially the permanent magnet 2 is horizontal from outside to inside
The width in section is tapered into.
The permanent-magnetic synchronous motor rotor that the utility model is provided, the cross section of permanent magnet 2 uses trapezium structure, along the rotor
Radially the width of the cross section of permanent magnet 2 is tapered into iron core 1 from outside to inside, can be made full use of rotor space, be made insertion
Permanent magnet amount it is more, improve motor output torque ability, and close to the cross section of permanent magnet 2 of the external diameter of rotor core 1
Width it is wider, same demagnetization magnetic potential is acted on permanent magnet 2, the anti-demagnetization capability of permanent magnet 2 improve.
It is preferred that scheme in, the outer surface of each permanent magnet trough 3 in permanent magnet trough 3 described in each pair and adjacent other one
It is parallel to the outer surface of the corresponding permanent magnet trough 3 in permanent magnet trough 3, and every piece of permanent magnet 2 is close to the upper table of rotor core 1
Face is each perpendicular to its outer surface with the lower surface close to rotating shaft, can make rotor core 1 is inner to place more permanent magnets, be lifted defeated
Go out torque.
In more excellent scheme, as shown in Fig. 2 the distance between two adjacent parallel external surfaces are H, 1mm≤H≤
4mm, this structure can both ensure the mechanical strength of rotor, and embedded more permanent magnets 2 are can ensure that again.
It is preferred that scheme in, the rotor core 1 and the periphery of adjacent two corresponding positions of permanent magnet trough 3 have
Predetermined width K tangent plane, the tangent plane is vertical with the outer surface.As shown in Figure 3, Figure 4, on rotor core 1 it is cylindrical with
The corresponding position of permanent magnet trough 3 is cut, and forms tangent plane, it is possible to increase the rotor portion of the end correspondence position of permanent magnet 2 is with determining
Air gap separation between son, so as to drop low magnetic density, can reduce the leakage magnetic flux for flowing through stator tooth boot portion, reduce iron loss.
In more excellent scheme, the predetermined width K of the tangent plane is more than or equal to twice of H.Such ratio can be more preferable
Low magnetic density drops in ground, preferably reduces the leakage magnetic flux for flowing through stator tooth boot portion, more effectively reduces iron loss.
In preferred scheme, as shown in figure 5, the permanent magnet 2 includes the first permanent magnet 21 and the second permanent magnet 22, described the
One permanent magnet 21 and second permanent magnet 22 are radially embedded in the permanent magnet trough 3 side by side from outside to inside along the rotor core 1
It is interior.Permanent magnet 2 can be divided into two sections, permanent magnet trough 3 can be respectively embedded into the permanent magnet 2 of different materials.
It is preferred that scheme in, the coercivity of material of the material than second permanent magnet 22 of first permanent magnet 21
It is high.When the wide permanent magnet 2 close to rotor outer circle is using the high ferritic permanent-magnet material of coercivity, or close rotor outer circle
Wide permanent magnet 2 use neodymium iron boron body, the thin permanent magnet 2 close to rotor inner circle uses ordinary ferrite, acts on easily
The coercivity enhancing of the permanent magnet 2 demagnetized on position, its anti-demagnetization capability is correspondingly improved.
It is preferred that scheme in, as shown in Figure 5 and Figure 6, first permanent magnet 21 is adjacent with second permanent magnet 22
There is appropriately distance between two end faces.Between first permanent magnet 21, two end faces adjacent with second permanent magnet 22
It can also set every magnetic bridge 4.In the insertion permanent magnet trough 3 of permanent magnet 2, the magnetic resistance of the part of permanent magnet 2 is far longer than the magnetic of silicon steel sheet
Resistance, now, the part of permanent magnet 2 is equivalent to air；When motor demagnetizes, demagnetization magnetic flux can lead to along the minimum path of magnetic resistance
Cross.Permanent magnet trough 3 is divided into the first permanent magnet trough, the second permanent magnet trough, centre is set every magnetic bridge 4, the first permanent magnet trough, the
The first permanent magnet 21, the second permanent magnet 22 are respectively embedded into two permanent magnet troughs.Now, demagnetization magnetic potential part passes through permanent magnet trough 3
It is middle every magnetic bridge 4, the demagnetization magnetic potential acted on permanent magnet 2 reduces, and the anti-demagnetization capability of permanent magnet 2 is improved.
The utility model additionally provides a kind of permagnetic synchronous motor, including above-mentioned permanent-magnetic synchronous motor rotor 5.Due to upper
The permanent-magnetic synchronous motor rotor 5 stated has above-mentioned technique effect, the permagnetic synchronous motor with the permanent-magnetic synchronous motor rotor 5
There should be corresponding technique effect, will not be repeated here.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this area
For technical staff, the utility model can have various changes and change.All institutes within spirit of the present utility model and principle
Any modification, equivalent substitution and improvements of work etc., should be included within protection domain of the present utility model.
Claims (11)
1. a kind of permanent-magnetic synchronous motor rotor, including rotor core (1), permanent magnet (2), the rotor core (1) set vertically
Put multipair permanent magnet trough (3), the V-shaped distribution of each pair permanent magnet trough (3), the tip of the V-type is towards rotating shaft, the permanent magnet
(2) in the embedded permanent magnet trough (3), the permanent magnet (2) and the shape of the permanent magnet trough (3) match, and its feature exists
It is trapezoidal in the cross section of, the permanent magnet (2), along the rotor core radially permanent magnet (2) cross section from outside to inside
Width taper into.
2. permanent-magnetic synchronous motor rotor according to claim 1, it is characterised in that in permanent magnet trough described in each pair (3)
The outer surface of each permanent magnet trough (3) and the outer surface of the corresponding permanent magnet trough (3) in adjacent another pair permanent magnet trough (3)
It is parallel.
3. permanent-magnetic synchronous motor rotor according to claim 2, it is characterised in that every piece of permanent magnet (2) is close to be turned
The upper surface of sub- iron core (1) is each perpendicular to its outer surface with the lower surface close to rotating shaft.
4. the permanent-magnetic synchronous motor rotor according to Claims 2 or 3, it is characterised in that two adjacent parallel external surfaces
The distance between be H, 1mm≤H≤4mm.
5. permanent-magnetic synchronous motor rotor according to claim 4, it is characterised in that the rotor core (1) with it is adjacent
The periphery of two permanent magnet trough (3) corresponding positions has predetermined width K tangent plane, and the tangent plane hangs down with the outer surface
Directly.
6. permanent-magnetic synchronous motor rotor according to claim 5, it is characterised in that the predetermined width K of the tangent plane is more than
Or the H equal to twice.
7. permanent-magnetic synchronous motor rotor according to claim 1, it is characterised in that the permanent magnet (2) includes first forever
Magnet (21) and the second permanent magnet (22), first permanent magnet (21) and second permanent magnet (22) are along the rotor core
(1) radially it is embedded in side by side in the permanent magnet trough (3) from outside to inside.
8. permanent-magnetic synchronous motor rotor according to claim 7, it is characterised in that the material of first permanent magnet (21)
Coercivity than the material of second permanent magnet (22) is high.
9. permanent-magnetic synchronous motor rotor according to claim 7, it is characterised in that first permanent magnet (21) with it is described
There is appropriately distance between two adjacent end faces of second permanent magnet (22).
10. permanent-magnetic synchronous motor rotor according to claim 9, it is characterised in that first permanent magnet (21) and institute
State and set every magnetic bridge (4) between two adjacent end faces of the second permanent magnet (22).
11. a kind of permagnetic synchronous motor, it is characterised in that turn including the permagnetic synchronous motor described in claim any one of 1-10
Son.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621110522.8U CN206517180U (en) | 2016-10-09 | 2016-10-09 | A kind of permanent-magnetic synchronous motor rotor and permagnetic synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621110522.8U CN206517180U (en) | 2016-10-09 | 2016-10-09 | A kind of permanent-magnetic synchronous motor rotor and permagnetic synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206517180U true CN206517180U (en) | 2017-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621110522.8U Active CN206517180U (en) | 2016-10-09 | 2016-10-09 | A kind of permanent-magnetic synchronous motor rotor and permagnetic synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206517180U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357028A (en) * | 2016-10-09 | 2017-01-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet synchronous motor rotor and permanent magnet synchronous motor |
| CN110311528A (en) * | 2019-07-08 | 2019-10-08 | 苏州市润豪电机有限公司 | A kind of two extremely embedded brshless DC motors |
| CN113644768A (en) * | 2021-08-13 | 2021-11-12 | 北京中科三环高技术股份有限公司 | Motor rotor and IPM motor |
-
2016
- 2016-10-09 CN CN201621110522.8U patent/CN206517180U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357028A (en) * | 2016-10-09 | 2017-01-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet synchronous motor rotor and permanent magnet synchronous motor |
| CN110311528A (en) * | 2019-07-08 | 2019-10-08 | 苏州市润豪电机有限公司 | A kind of two extremely embedded brshless DC motors |
| CN113644768A (en) * | 2021-08-13 | 2021-11-12 | 北京中科三环高技术股份有限公司 | Motor rotor and IPM motor |
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