CN109067037A - A kind of hybrid permanent magnet motor rotor construction of high torque density - Google Patents
A kind of hybrid permanent magnet motor rotor construction of high torque density Download PDFInfo
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- CN109067037A CN109067037A CN201810938901.3A CN201810938901A CN109067037A CN 109067037 A CN109067037 A CN 109067037A CN 201810938901 A CN201810938901 A CN 201810938901A CN 109067037 A CN109067037 A CN 109067037A
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- shaped groove
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
- H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a kind of hybrid permanent magnet motor rotor constructions of high torque density, belong to technical field of motors, several rectangular channels (2) are equipped with along perpendicular to circumferencial direction on the rotor, rectangular channel (2) lower end is connected with arcuate recess (3), rectangle ferrite (7) are embedded in connectivity slot, and the direction of magnetization of ferrite (7) is tangentially perpendicular to permanent magnetism dignity；Rectangular channel (2) upper end is connected with T-slot (4)；V-shaped groove (5) are equipped at left and right sides of the T-slot (4)；The V-shaped groove (5) and the opposite the other end that is open are equipped with reinforcing rib (6)；The slot of left and right two of the V-shaped groove (5) embeds the identical neodymium iron boron of polarized (8)；The V-shaped groove (5) is equipped with dovetail groove (9) close to reinforcing rib (6) side to limit the movement of neodymium iron boron (8).The present invention can not only improve the torque density of hybrid permanent magnet motor, and can reduce leakage field, improve permanent magnet utilization rate and electric efficiency.
Description
Technical field
The invention discloses a kind of hybrid permanent magnet motor rotor constructions of high torque density, belong to technical field of motors.
Background technique
Rare earth material is widely used in the industrial productions such as motor, but rare earth, as a kind of strategic resources, year-round provision is not
Stablize, price rises steadily.Therefore use is cheap, supplies stable non-rare earth permanent magnet, as ferrite part replaces rare earth
Permanent magnetism is applied in motor, can significantly reduce motor manufacturing cost.But forever far below neodymium iron boron due to ferritic magnetic energy product
Magnetic material and coercivity is lower, by reasonable rotor design, so that guaranteeing electricity while reducing rare earth permanent-magnetic material dosage
The high torque density of machine.And the anti-degaussing ability of motor is improved, become emphasis.The present invention is in view of the above problems, pass through rotor
Structure design makes two kinds of permanent magnet arrangements rationally, can reduce cost and improve the torque density of motor, reduce iron core and vortex
Loss, improves the efficiency of motor.
The working principle of hybrid permanent magnet motor is that two kinds of hybrid permanent-magnets are built on rotor as excitation source, generates magnetic
, it interacts with the rotating excitation field that stator electrical excitation generates, so that rotor rotates.Although permanent magnet, which is built on rotor, to be had
Saliency can use reluctance torque, but leakage field inevitably occurs, and permanent magnet utilization rate reduces, and ferrite permanent-magnet material
The magnetic energy product of material is far below neodymium iron boron, and coercivity is relatively low, is easily demagnetized.Therefore the position arrangement of reasonable setting permanent magnet,
Magnet isolation tank can improve the torque density and efficiency of motor while cost is reduced.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of hybrid permanent magnet motors
Rotor structure, the rotor structure can not only reduce the cost of traditional rare earth magneto, also as permanent magnetism body position and every magnetic
The design of magnetic barrier can be improved the torque density of motor, while improve the efficiency of motor.
To achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of hybrid permanent magnet motor rotor construction is equipped with several rectangular channels along perpendicular to circumferencial direction on the rotor
(2), rectangular channel (2) lower end is connected with arcuate recess (3), is embedded with rectangle ferrite (7) in connectivity slot, and ferrite (7)
The direction of magnetization be tangentially perpendicular to permanent magnetism dignity；Rectangular channel (2) upper end is connected with T-slot (4)；The T-slot (4)
The left and right sides is equipped with V-shaped groove (5)；The V-shaped groove (5) and the opposite the other end that is open are equipped with reinforcing rib (6)；The V-arrangement
The slot of left and right two of slot (5) embeds the identical neodymium iron boron of polarized (8)；The V-shaped groove (5) is equipped with ladder close to reinforcing rib (6) side
Shape slot (9) is to limit the movements of neodymium iron boron (8).
Preferred: the arcuate recess (3) is arch-shaped structure, including outer layer circular arc and internal layer circular arc, the ectonexine circle
Arc is parallel, and the internal layer circular arc and ferrite (7) close to shaft are tangent, to limit the movement of ferrite (7).
Preferred: T-slot (4) upper layer " one " shape part includes ectonexine camber line, and ectonexine camber line is round with rotor
Arc is parallel.Lower layer " 1 " shape part is connected with rectangular channel (2), and width is narrow compared with rectangular channel (2) width, limitation ferrite (7)
It is mobile.
Preferred: the opening of the V-shaped groove (5) is directed toward stator, and the opening T-slot adjacent with two sides (4) is connected.
Preferred: the number of the rectangular channel (2) is 6, and the width and length ratio of rectangular channel are 1:1.5-2.
Preferred: the width of the arcuate recess (3) and the width ratio of ferrite (7) are 1:1.75-2.25, arcuate recess (3)
Distance of the upside camber line away from its arc core with downside camber line be 1-2:3 away from ratio at a distance from its arc core.
Preferred: the width ratio of T-slot (4) lower layer " 1 " the shape partial width and ferrite (7) is 1:1.75-2.25,
Upper layer " one " shape width and " 1 " shape width ratio are 1-1.25:1.
Preferred: the width of the neodymium iron boron (8) and its length are than being about 1:7.5-8.5, the width of the reinforcing rib (6)
Width ratio with neodymium iron boron (8) is 0.75-1.25:1.
Preferred: at α angle, the angle of the α is 60- for the downside of the dovetail groove (9) and the end of neodymium iron boron (8)
85°。
Preferred: at β angle, the angle of the β is 120-150 ° for the end of the scarf (11) and neodymium iron boron (8).
A kind of rotor structure of hybrid permanent magnet motor provided by the invention has the advantages that compared with prior art
1. being along the circumferential direction equipped with rectangular channel on rotor, communicated therewith on the downside of rectangular channel equipped with arcuate recess, which uses
Magnetic flux path is adjusted, the effect of planning magnetic circuit is played.Therefore by optimizing the width of the arcuate recess and away from upper and lower level circular arc arc
The distance of the heart and the length-width ratio of rectangular channel can reduce leakage field, high electric efficiency.
2. being equipped with the T-slot of connection on the upside of rectangular channel close at circumference, V-shaped groove, left and right two are equipped at left and right sides of T-slot
The identical neodymium iron boron of polarity is embedded in slot, the direction of magnetization is perpendicular to neodymium iron boron surface.Magnetic of connecting is formed with ferrite on the upside of neodymium iron boron
Road, downside and ferrite form parallel circuits, therefore can be improved by the dosage and position of optimization ferrite and neodymium iron boron
Permanent magnet utilization rate improves torque density and improves ferritic anti-demagnetization capability.
3.V shape trench bottom is equipped with dovetail groove, and dovetail groove can limit the movement of neodymium iron boron, and plays the work for reducing leakage field
With.Reinforcing rib, the mechanical strength of the motor of raising are equipped among two dovetail grooves.
Camber line has a certain distance away from rotor circumference on the upside of 4.T shape slot, can effectively subtract while guaranteeing mechanical strength
The leakage field of small three pieces of permanent magnet habitats improves electric efficiency.
In conclusion the present invention can not only improve the torque density of hybrid permanent magnet motor, and leakage field can be reduced, mentioned
High permanent magnet utilization rate and electric efficiency.
Detailed description of the invention
Fig. 1-4 is the Detailed description of the invention of embodiment 1
Fig. 1 is the rotor structure figure of the hybrid permanent magnet motor of high torque density
Fig. 2 is the structure chart of rectangular channel, arcuate recess and T-slot
Fig. 3 is the structure chart of V-shaped groove, rectangular channel
Fig. 4 is the direction of magnetization schematic diagram of neodymium iron boron and ferrite permanent-magnet materials, and in figure, arrow direction is the direction of magnetization.
Wherein: 1 is silicon steel sheet, and 2 be rectangular channel, and 3 be arcuate recess, and 4 be T-slot, and 5 be V-shaped groove, and 6 be reinforcing rib, and 7 be iron
Oxysome permanent-magnet material, 8 be Nd-Fe-B permanent magnet material, and 9 be dovetail groove, and α is the angle of neodymium iron boron and dovetail groove lower layer inclined-plane.
Fig. 5-8 is the Detailed description of the invention of embodiment 2
Fig. 5 is the rotor structure figure of the hybrid permanent magnet motor of high torque density
Fig. 6 is the structure chart of rectangular channel, arcuate recess and rectangular aperture slot
Fig. 7 is the structure chart of V-shaped groove, rectangular channel
Fig. 8 is the direction of magnetization schematic diagram of neodymium iron boron and ferrite permanent-magnet materials, and in figure, arrow direction is the direction of magnetization.
Wherein: 1 is silicon steel sheet, and 2 be rectangular channel, and 3 be arcuate recess, and 4 be rectangular aperture slot, and 5 be V-shaped groove, and 6 be reinforcing rib, 7
It is Nd-Fe-B permanent magnet material for ferrite permanent-magnet materials, 8,9 be dovetail groove, and 10 be reinforcing rib, and 11 be scarf, and α is neodymium iron boron
With the angle on dovetail groove lower layer inclined-plane, β is neodymium iron boron and scarf angle.
Specific embodiment
Embodiment 1
Present example 1 is further described in conjunction with attached drawing 1-4.
A kind of hybrid permanent magnet motor rotor construction is equipped with several rectangular channels along perpendicular to circumferencial direction on the rotor
(2), rectangular channel (2) lower end is connected with arcuate recess (3), is embedded with rectangle ferrite (7) in connectivity slot, and ferrite (7)
The direction of magnetization be tangentially perpendicular to permanent magnetism dignity；Rectangular channel (2) upper end is connected with T-slot (4)；The T-slot (4)
The left and right sides is equipped with V-shaped groove (5)；The V-shaped groove (5) and the opposite the other end that is open are equipped with reinforcing rib (6)；The V-arrangement
The slot of left and right two of slot (5) embeds the identical neodymium iron boron of polarized (8)；The V-shaped groove (5) is equipped with ladder close to reinforcing rib (6) side
Shape slot (9) is to limit the movements of neodymium iron boron (8).
The arcuate recess (3) is arch-shaped structure, including outer layer circular arc and internal layer circular arc, and the ectonexine circular arc is parallel,
Internal layer circular arc and ferrite (7) close to shaft is tangent, to limit the movement of ferrite (7).
T-slot (4) upper layer " one " shape part includes ectonexine camber line, and ectonexine camber line is parallel with rotor circular arc.
Lower layer " 1 " shape part is connected with rectangular channel (2), and width is narrow compared with rectangular channel (2) width, the movement of limitation ferrite (7).
The opening of the V-shaped groove (5) is directed toward stator, and the opening T-slot adjacent with two sides (4) is connected.
The number of the rectangular channel (2) is 6, and the width and length of rectangular channel are respectively 2mm and 3.5mm.
The width of the arcuate recess (3) is 1mm, and the width of ferrite (7) is 2mm, and the upside camber line of arcuate recess (3) is away from it
The distance of arc core and downside camber line are away from being respectively 2.5mm and 3.5mm at a distance from its arc core.
T-slot (4) lower layer " 1 " the shape partial width 1mm, upper layer " one " shape width are 1.15mm.
The width of the neodymium iron boron (8) and its length are respectively 1mm and 8mm, and the width of the reinforcing rib (6) is
1.05mm。
At α angle, the angle of the α is 75 ° for the downside of the dovetail groove (9) and the end of neodymium iron boron (8).
Embodiment 2
Example 2 of the invention is further explained in conjunction with attached drawing 5-8.
A kind of hybrid permanent magnet motor rotor construction is equipped with several rectangular channels along perpendicular to circumferencial direction on the rotor
(2), rectangular channel (2) lower end is connected with arcuate recess (3), is embedded with rectangle ferrite (7) in connectivity slot, and ferrite (7)
The direction of magnetization be tangentially perpendicular to permanent magnetism dignity；The rotor circumference is equipped with rectangular aperture slot (4), the rectangular channel (2)
Upper end is connected with rectangular aperture slot (4)；V-shaped groove (5) are equipped at left and right sides of the rectangular aperture slot (4)；The V-shaped groove
(5) the other end opposite with being open is equipped with reinforcing rib (6)；It is identical that the slot of left and right two of the V-shaped groove (5) embeds polarized
Neodymium iron boron (8)；The V-shaped groove (5) is equipped with dovetail groove (9) close to reinforcing rib (6) side to limit the movement of neodymium iron boron (8).
The arcuate recess (3) is arch-shaped structure, including outer layer circular arc and internal layer circular arc, and the ectonexine circular arc is parallel,
Internal layer circular arc and ferrite (7) close to shaft is tangent, to limit the movement of ferrite (7).
The opening of the V-shaped groove (5) is directed toward stator, and opening both ends are equipped with reinforcing rib (10) and are subtracted with improving mechanical strength
Small leakage field.
The number of the rectangular channel (2) is 6, and the width and length of rectangular channel are respectively 2mm and 3.5mm.
The width of the arcuate recess (3) is 1mm, and the width of ferrite (7) is 2mm, and the upside camber line of arcuate recess (3) is away from it
The distance of arc core and downside camber line are away from being respectively 2.5mm and 3.5mm at a distance from its arc core.
Rectangular aperture slot (4) width is 1mm, peripherally disposed, forms irregular rotor circumference.
The width of the neodymium iron boron (8) and its length are respectively 1mm and 8mm, and the width of the reinforcing rib (6) is
1.05mm。
At α angle, the angle of the α is 75 ° for the downside of the dovetail groove (9) and the end of neodymium iron boron (8).
At β angle, the angle of the β is 140 ° for the end of the scarf (11) and neodymium iron boron (8).
" rationally design two kinds of hybrid permanent-magnet structures and improve permanent magnet utilization rate " is utilized, using rotating shaft core as the center of circle
Rotor is equipped with several rectangular channels, wherein being embedded with the ferrite magnetic steel of cutting orientation magnetizing, the direction of magnetization is perpendicular to magnet steel face；Rectangular channel
Bottom is equipped with coupled logical arcuate recess, which reduces the brow leakage of iron oxygen for adjusting magnetic flux path；Rectangle
Slot upper end is equipped with coupled logical T-slot/rectangular aperture slot, which plays separated magnetic effect, reduce two kinds of hybrid permanent-magnets
Brow leakage improves permanent magnet utilization rate；It is equipped with V-shaped groove at left and right sides of T-slot, is embedded with the identical neodymium iron boron of magnetic pole forever in slot
Magnetic magnet steel, the direction of magnetization of the magnet steel is perpendicular to magnet steel face；Neodymium iron boron upper end and ferrite form series circuit, can effectively support
The generation of demagnetization phenomenon caused by anti-armature influences, simultaneously because the series connection of magnetic linkage, can magnetize for the ferrite of low magnetic energy；Neodymium iron
Boron lower end and upper end form parallel circuits；V-shaped groove bottom be equipped with reinforcing rib, by optimize reinforcing rib width, reduce leakage field and
Increase mechanical strength.By rationally designing two kinds of hybrid permanent magnet structures and all kinds of magnet isolation tanks, permanent magnet utilization rate is improved, improves and turns
Square performance reduces leakage field, reduces core loss and eddy-current loss, improves electric efficiency.
It is as shown in Figs 1-4 1 explanation of motor embodiment.
As shown in Figure 1；Hybrid permanent magnet motor rotor construction is along the circumferential direction vertically equipped with 6 rectangular channels, slot on the rotor
It is embedded with ferrite magnetic steel.
As shown in Figure 2；Rectangular channel lower end is connected with arcuate recess, and rectangular channel upper end is connected with T-slot；The width of arcuate recess
Degree is 1mm, the upside camber line of arcuate recess away from the distance of its arc core and downside camber line away from be respectively at a distance from its arc core 2.5mm and
3.5mm, ferritic width are 2mm, length 3.5mm, T-slot lower layer " 1 " shape partial width 1mm, upper layer " one " shape width
For 1.15mm.
As shown in figure 3, V-shaped groove bottom is equipped with reinforcing rib；The slot of left and right two of V-shaped groove embeds the identical neodymium iron of polarized
Boron；V-shaped groove is equipped with dovetail groove close to reinforcing rib side to limit the movement of neodymium iron boron.The width of neodymium iron boron is respectively with its length
The width of 1mm and 8mm, reinforcing rib are 1.05mm, and at α angle, the angle of the α is for the downside of dovetail groove and the end of neodymium iron boron
75°
As shown in figure 4, spoke-like rectangle ferrite is cutting orientation magnetizing, the neodymium iron boron in V-shaped groove is radial magnetizing, with iron oxygen
Body constitutes series circuit.
It is as viewed in figures 5-8 2 explanation of motor embodiment.
As shown in Figure 5；Hybrid permanent magnet motor rotor construction is along the circumferential direction vertically equipped with 6 rectangular channels, slot on the rotor
It is embedded with ferrite magnetic steel.
As shown in Figure 6；Rectangular channel lower end is connected with arcuate recess, and rectangular channel upper end is connected with rectangular aperture slot；Arch
The width of slot is 1mm, and the upside camber line of arcuate recess is away from the distance of its arc core and downside camber line away from being respectively at a distance from its arc core
2.5mm and 3.5mm, ferritic width are 2mm, length 3.5mm, rectangular aperture groove width 1mm.
As shown in fig. 7, V-shaped groove bottom is equipped with reinforcing rib；The slot of left and right two of V-shaped groove embeds the identical neodymium iron of polarized
Boron；V-shaped groove is equipped with dovetail groove close to reinforcing rib side to limit the movement of neodymium iron boron.The width of neodymium iron boron is respectively with its length
The width of 1mm and 8mm, reinforcing rib are 1.05mm, and at α angle, the angle of the α is for the downside of dovetail groove and the end of neodymium iron boron
At β angle, the angle of the β is 140 ° for the end of 75 ° of scarves (11) and neodymium iron boron (8).
As shown in figure 8, spoke-like rectangle ferrite is cutting orientation magnetizing, the neodymium iron boron in V-shaped groove is radial magnetizing, with iron oxygen
Body constitutes series circuit.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (10)
1. a kind of hybrid permanent magnet motor rotor construction, which is characterized in that if being equipped on the rotor along perpendicular to circumferencial direction
Dry rectangular channel (2), rectangular channel (2) lower end are connected with arcuate recess (3), are embedded with rectangle ferrite (7) in connectivity slot, and iron
The direction of magnetization of oxysome (7) is tangentially perpendicular to permanent magnetism dignity；Rectangular channel (2) upper end is connected with T-slot (4)；The T
V-shaped groove (5) are equipped at left and right sides of shape slot (4)；The V-shaped groove (5) and the opposite the other end that is open are equipped with reinforcing rib (6)；
The slot of left and right two of the V-shaped groove (5) embeds the identical neodymium iron boron of polarized (8)；The V-shaped groove (5) is close to reinforcing rib (6) side
The movement of neodymium iron boron (8) is limited equipped with dovetail groove (9).
2. a kind of hybrid permanent magnet motor rotor construction according to claim 1, which is characterized in that the arcuate recess (3) is
Arch-shaped structure, including outer layer circular arc and internal layer circular arc, the ectonexine circular arc is parallel, close to the internal layer circular arc and iron oxygen of shaft
Body (7) is tangent, to limit the movement of ferrite (7).
3. a kind of hybrid permanent magnet motor rotor construction according to claim 1, which is characterized in that T-slot (4) upper layer
" one " shape part includes ectonexine camber line, and ectonexine camber line is parallel with rotor circular arc；Lower layer " 1 " shape part and rectangular channel (2)
It is connected, width is narrow compared with rectangular channel (2) width, to limit the movement of ferrite (7).
4. a kind of hybrid permanent magnet motor rotor construction according to claim 1, which is characterized in that V-shaped groove (5) are opened
Mouth is directed toward stator, and the opening T-slot adjacent with two sides (4) is connected.
5. a kind of hybrid permanent magnet motor rotor construction according to claim 1, which is characterized in that the rectangular channel (2)
Number is 6, and the width and length ratio of rectangular channel are 1:1.5-2.
6. a kind of hybrid permanent magnet motor rotor construction according to claim 2, which is characterized in that the arcuate recess (3)
Width and the width ratio of ferrite (7) are 1:1.75-2.25, distance and downside of the upside camber line of arcuate recess (3) away from its arc core
Distance ratio of the camber line away from its arc core is 1-2:3.
7. a kind of hybrid permanent magnet motor rotor construction according to claim 3, which is characterized in that T-slot (4) lower layer
" 1 " shape partial width and the width ratio of ferrite (7) are 1:1.75-2.25, and upper layer " one " shape width and " 1 " shape width ratio are 1-
1.25:1。
8. a kind of hybrid permanent magnet motor rotor construction according to claim 1, which is characterized in that the neodymium iron boron (8)
Than being about 1:7.5-8.5, the width of the reinforcing rib (6) and the width ratio of neodymium iron boron (8) are 0.75- for width and its length
1.25:1。
9. a kind of hybrid permanent magnet motor rotor construction according to claim 1 or 8, which is characterized in that the dovetail groove (9)
Downside and neodymium iron boron (8) end at α angle, the angle of the α is 60-85 °.
10. a kind of hybrid permanent magnet motor rotor construction according to claim 1 or 8, which is characterized in that V-shaped groove (5) is close
At β angle, the angle of the β is 120-150 ° for one end scarf (11) of ferrite (7) and the end of neodymium iron boron (8).
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| CN109546772A (en) * | 2018-11-27 | 2019-03-29 | 东南大学 | A kind of novel hybrid permanent magnet type permanent-magnet magnetic resistance synchronous motor rotor structure |
| CN109742881A (en) * | 2019-02-20 | 2019-05-10 | 哈尔滨工业大学 | Tandem type has the adjustable flux electric machine of hybrid permanent magnet of anti-salient pole nature |
| CN110739822A (en) * | 2019-11-08 | 2020-01-31 | 南京航空航天大学 | parallel magnetic circuit memory motor and operation method |
| CN113364181A (en) * | 2021-06-29 | 2021-09-07 | 广东工业大学 | Reverse salient pole less rare earth permanent magnet synchronous motor rotor and motor thereof |
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| CN109742881A (en) * | 2019-02-20 | 2019-05-10 | 哈尔滨工业大学 | Tandem type has the adjustable flux electric machine of hybrid permanent magnet of anti-salient pole nature |
| CN110739822A (en) * | 2019-11-08 | 2020-01-31 | 南京航空航天大学 | parallel magnetic circuit memory motor and operation method |
| CN113364181A (en) * | 2021-06-29 | 2021-09-07 | 广东工业大学 | Reverse salient pole less rare earth permanent magnet synchronous motor rotor and motor thereof |
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