CN208835851U - motor rotor and permanent magnet motor - Google Patents
motor rotor and permanent magnet motor Download PDFInfo
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- CN208835851U CN208835851U CN201821287377.XU CN201821287377U CN208835851U CN 208835851 U CN208835851 U CN 208835851U CN 201821287377 U CN201821287377 U CN 201821287377U CN 208835851 U CN208835851 U CN 208835851U
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Abstract
The utility model provides an electric motor rotor and permanent-magnet machine. The motor rotor comprises a rotor core (1) and a first permanent magnet pole and a second permanent magnet pole which are alternately arranged along the circumferential direction of the rotor core (1), wherein the coercive force of the permanent magnet on the first permanent magnet pole is higher than that of the permanent magnet on the second permanent magnet pole. According to the utility model discloses an electric motor rotor can effectively reduce the motor and magnetize the electric current, and increase motor demagnetization electric current guarantees that the motor is magnetic circuit stability when normal operating, promotes motor efficiency.
Description
Technical field
The utility model belongs to technical field of motors, and in particular to a kind of rotor and magneto.
Background technique
Conventional permanent magnet motor provides magnetic flux by permanent magnet, but permanent magnet provides magnetic field and fixes, and motor internal magnetic field is difficult to
It adjusts, efficiency when magneto being made to be difficult to take into account high and low frequency.And in the case where power supply voltage is fixed, limit
The maximum running frequency of motor.
Currently, magneto internal magnetic field is difficult to the shortcomings that adjusting mostly, motor maximum speed is resulted in by input direct-current
The limitation of the factors such as busbar voltage, motor low speed, high-speed cruising area efficiency are difficult to the problems such as taking into account, and common variable magnetic is powered
Machine, low-coercivity magnet steel are influenced by high-coercive force magnet steel, fill that demagnetization current is larger, will increase low-coercivity magnet steel to fill demagnetization difficult
Degree reduces electric efficiency.
Utility model content
Therefore, the technical problem to be solved by the present invention is to provide a kind of rotor and magneto, Neng Gouyou
Effect reduces motor and magnetizes electric current, increases motor demagnetization current, guarantees magnetic loop stability when motor operates normally, and promotes motor effect
Rate.
To solve the above-mentioned problems, the utility model provides a kind of rotor, including rotor core and along rotor core
Circumferential direction the first permanent-magnet pole and the second permanent-magnet pole that are arranged alternately, the coercivity of the permanent magnet in the first permanent-magnet pole is higher than second forever
The coercivity of permanent magnet on magnetic pole.
Preferably, the first permanent-magnet pole includes the first permanent magnet, pole center line of first permanent magnet about the first permanent-magnet pole
Symmetrically.
Preferably, the first permanent magnet is in "-" type, V-type or W type.
Preferably, the second permanent-magnet pole includes the second permanent magnet, pole center line of second permanent magnet about the second permanent-magnet pole
Symmetrically.
Preferably, the second permanent-magnet pole further includes third permanent magnet, pole center of the third permanent magnet about the second permanent-magnet pole
Line is symmetrical, and the second permanent magnet is located at the both ends of the circumferential direction of third permanent magnet.
The second permanent magnet and third permanent magnet for being preferably located at same permanent-magnet pole are in W type.
Preferably, meet between the first permanent magnet, the second permanent magnet and third permanent magnet:
0.9H1≤H2；
Hcj3*Br3*H3≤3/4*Hcj1*Br1*H1；
0.8Hcj3≤Hcj2≤1.3Hcj3；
Wherein H1 is the thickness of the first permanent magnet, and H2 is the thickness of the second permanent magnet, and H3 is the thickness of third permanent magnet,
Hcj1 is the coercivity of the first permanent magnet, and Br1 is the remanent magnetism of the first permanent magnet, and Hcj2 is the coercivity of the second permanent magnet, and Br2 is
The remanent magnetism of second permanent magnet, Hcj3 are the coercivity of third permanent magnet, and Br3 is the remanent magnetism of third permanent magnet.
Preferably, the coercivity of third permanent magnet is greater than the coercivity of the second permanent magnet.
Preferably, the second permanent magnet is different with the thickness of third permanent magnet and/or the trade mark is different.
Preferably, the angle between the second permanent magnet and third permanent magnet is 30 ° of θ >.
Preferably, the second permanent magnet and the first permanent magnet form cascaded structure in magnetic loop.
Preferably, when the first permanent magnet is W type, it is provided with the first permanent magnetism slot in the first permanent-magnet pole, is set in the second permanent-magnet pole
It is equipped with the second permanent magnetism slot, the first permanent magnet is arranged in the first permanent magnetism slot, and the second permanent magnet is arranged in the second permanent magnetism slot, and first
Angle between permanent magnetism slot and the second permanent magnetism slot is 1≤30 ° of -5 °≤θ.
Preferably, the second permanent-magnet pole includes the second permanent magnetism slot and third permanent magnetism slot, and the second permanent magnet is arranged in the second permanent magnetism
In slot, third permanent magnet is arranged in third permanent magnetism slot, and the second permanent magnet portion protrudes into third permanent magnetism slot, and the second permanent magnet
It is H4 close to the maximum height of the second permanent magnet side side wall that the part of third permanent magnetism slot, which is protruded into, relative to third permanent magnetism slot, wherein
H4/H2 < 0.3, H2 are the thickness of the second permanent magnet.
Preferably, when the first permanent magnet is W type, the first permanent magnetism slot, the setting of the first permanent magnet are provided in the first permanent-magnet pole
In the first permanent magnetism slot, in the section perpendicular to the central axis of rotor core, the outer edge and second of the first permanent magnetism slot is forever
Minimum range between the outer edge of magnetic slot is H, the first permanent magnet with a thickness of H1, the second permanent magnetism slot is close to the first permanent magnetism slot
Maximum distance between side wall and the first permanent-magnet pole and the interface of the second permanent-magnet pole is H5, in which:
H≥2H1；
0.5*H1≤H5≤H1。
Preferably, in the section perpendicular to the central axis of rotor core, in the radial direction of the first permanent magnet
On separated time, the spacing between the radially outward edge of the first permanent magnet and the radially outward edge of rotor core is L1, in the second permanent magnetism
Spacing in the middle separated time of the radial direction of body, between the radially outward edge of the second permanent magnet and the radially outward edge of rotor core
For L2, the first permanent magnet with a thickness of H1, in which:
L1≥2L2；And L1 >=1.8*H1.
Preferably, the radially outward edge of the first permanent magnet is provided with the opening of the radially outward edge of perforation rotor core；Or,
The radially outward edge of first permanent magnet is provided with magnetic conduction bridge.
Preferably, it when the radially outward edge of the first permanent magnet is provided with opening, is open and has close to the side of the second permanent-magnet pole
There is bevelled edge.
Preferably, when the radially outward edge of the first permanent magnet is provided with opening, opening and the permanent magnet of the second permanent-magnet pole it
Between be provided with the groove being recessed inwardly from the outer radial periphery edge of rotor core.
Preferably, it is provided with the first permanent magnetism slot in the first permanent-magnet pole, the second permanent magnetism slot and are provided in the second permanent-magnet pole
Three permanent magnetism slots, the first permanent magnet are arranged in the first permanent magnetism slot, and the second permanent magnet is arranged in the second permanent magnetism slot, third permanent magnet
It is arranged in third permanent magnetism slot, the gap size between the first permanent magnet and the first permanent magnetism slot is D1, the second permanent magnet and second
Gap size between permanent magnetism slot is D2, and the gap size between third permanent magnet and third permanent magnetism slot is D3, wherein D2 >=
1.5D1, D3 >=1.5D1.
Preferably, D1 >=0.1mm.
Another aspect according to the present utility model provides a kind of magneto, including rotor, which is
Above-mentioned rotor.
Preferably, magneto further includes motor stator, and air gap is formed between motor stator and rotor, when rotor iron
When being arranged fluted on core, the relationship between the width k and width of air gap δ of groove meets:
k≥1.2δ。
Rotor provided by the utility model, first be arranged alternately including rotor core and along the circumferential direction of rotor core
Permanent-magnet pole and the second permanent-magnet pole, the coercivity of the permanent magnet in the first permanent-magnet pole are higher than the coercive of the permanent magnet in the second permanent-magnet pole
Power.The rotor forms the first permanent-magnet pole and the second permanent-magnet pole being arranged alternately using the different permanent magnet of coercivity, different
Coercitive permanent magnet can form cascaded structure in magnetic loop, can be by first forever in motor normal course of operation
The permanent magnet of high-coercive force on magnetic pole forms the permanent magnet of the low-coercivity in the second permanent-magnet pole and protects magnetic action, improves whole
The equivalent coercivity of body magnetic loop can effectively reduce motor and magnetize electric current, improve motor demagnetization current, guarantee that motor is normally transported
Magnetic loop stability when row promotes electric efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the rotor of the utility model first embodiment；
Fig. 2 is the structural schematic diagram of the rotor of the utility model second embodiment；
Fig. 3 is magnetic figure of the magneto of the utility model embodiment when the first magnetic shielding structure magnetizes；
Fig. 4 is magnetic figure of the magneto of the utility model embodiment when second of magnetic shielding structure magnetizes；
Fig. 5 is magnetic figure of the magneto of the utility model embodiment when the third magnetic shielding structure magnetizes；
Fig. 6 is magnetic figure of the magneto of the utility model embodiment when the 4th kind of magnetic shielding structure magnetizes；
Fig. 7 is magnetic figure of the magneto of the utility model embodiment when the 5th kind of magnetic shielding structure magnetizes；
The second permanent magnet and third permanent magnet that Fig. 8 is the rotor of the utility model embodiment are in different relative positions
When influence schematic diagram to the electric current that magnetizes.
Appended drawing reference indicates are as follows:
1, rotor core；2, the first permanent magnet；3, the second permanent magnet；4, third permanent magnet；5, the first permanent magnetism slot；6, second
Permanent magnetism slot；7, third permanent magnetism slot；8, magnetic conduction bridge；9, it is open；10, bevelled edge；11, groove；12, motor stator；13, air gap.
Specific embodiment
In conjunction with referring to shown in Fig. 1 to 8, embodiment according to the present utility model, rotor includes that rotor core 1 and edge turn
The coercivity of the first permanent-magnet pole and the second permanent-magnet pole that the circumferential direction of sub- iron core 1 is arranged alternately, the permanent magnet in the first permanent-magnet pole is high
In the coercivity of the permanent magnet in the second permanent-magnet pole.
Above-mentioned permanent magnet is, for example, magnet steel.
At least two coercitive magnetic are respectively adopted in the permanent magnet on permanent magnet and the second permanent-magnet pole in first permanent-magnet pole
The steel trade mark, so that different coercitive permanent-magnet structures are formed in two permanent-magnet poles, due to the coercitive permanent magnetism knot of two kinds of differences
Structure is located at different magnetic poles, therefore low-coercivity magnet steel is not readily susceptible to the influence of high-coercive force magnet steel, can effectively play
The magnetic characteristic of low-coercivity magnet steel, to improve motor performance.
The rotor is formed in first of circumferentially alternating setting on rotor core 1 using the different permanent magnet of coercivity
Permanent-magnet pole and the second permanent-magnet pole, different coercitive permanent magnets can form cascaded structure in magnetic loop, normally transport in motor
It, can be by the permanent magnet of the high-coercive force in the first permanent-magnet pole to the permanent magnetism of the low-coercivity in the second permanent-magnet pole during row
Body, which is formed, protects magnetic action, improves the equivalent coercivity of whole magnetic loop, can effectively reduce motor and magnetize electric current, improves motor
Demagnetization current guarantees magnetic loop stability when motor operates normally, and promotes electric efficiency.
Preferably, the first permanent-magnet pole includes the first permanent magnet 2, pole center of first permanent magnet 2 about the first permanent-magnet pole
Line is symmetrical.In this way, which the structure for being located at the first permanent magnet of the pole center line two sides of the first permanent-magnet pole is identical, therefore can be with
Good magnetic structure is formed with the structure of the second permanent-magnet pole of the first permanent-magnet pole circumferential direction two sides, motor is further increased and normally transports
The magnetic stability in circuit when row.
First permanent magnet 2 can be in "-" type, V-type or W type, so as to be selected according to the magnet structure in the second permanent-magnet pole
Suitable arrangement is selected, can preferably be formed and be cooperated with the magnet structure in the second permanent-magnet pole, promote the workability of motor
Energy.
Second permanent-magnet pole includes the second permanent magnet 3, and the second permanent magnet 3 is symmetrical about the pole center line of the second permanent-magnet pole,
It can enable the second permanent magnet 3 the first permanent-magnet pole shape with the second permanent-magnet pole two sides respectively positioned at pole center line two sides
At identical magnetic structure, guarantees the harmony that motor entirety magnetic circuit is distributed in circumferential direction, improve the working performance of motor.
Second permanent-magnet pole further includes third permanent magnet 4, pole center line pair of the third permanent magnet 4 about the second permanent-magnet pole
Claim, the second permanent magnet 3 is located at the both ends of the circumferential direction of third permanent magnet 4.The coercive of second permanent magnet 3 and third permanent magnet 4
Power is below the coercivity of the first permanent magnet 2, therefore the second permanent magnet 3 and the mutual cooperation of third permanent magnet 4 are formed by permanent magnetism
Body combination, coercivity still are below the coercivity of the first permanent magnet 2, and due to using two kinds of permanent magnetism in the second permanent-magnet pole
Body, therefore can be capable of forming more kinds of coercitive permanent-magnet structures of difference in the second permanent-magnet pole, it can be more easily
Cooperation is formed between the first permanent magnet 2, obtains good magnetic circuit effect, while can effectively promote the adjustable magnetic range of motor.
The second permanent magnet 3 and third permanent magnet 4 for being preferably located at same permanent-magnet pole are in W type.Second permanent magnet 3 and
The thickness of three permanent magnet 4 is different and/or the trade mark is different.
In the present embodiment, meet between the first permanent magnet 2, the second permanent magnet 3 and third permanent magnet 4:
0.9H1≤H2；
Hcj3*Br3*H3≤3/4*Hcj1*Br1*H1；
0.8Hcj3≤Hcj2≤1.3Hcj3；
Wherein H1 is the thickness of the first permanent magnet 2, and H2 is the thickness of the second permanent magnet 3, and H3 is the thickness of third permanent magnet 4
Degree, Hcj1 are the coercivity of the first permanent magnet 2, and Br1 is the remanent magnetism of the first permanent magnet 2, and Hcj2 is the coercive of the second permanent magnet 3
Power, Br2 are the remanent magnetism of the second permanent magnet 3, and Hcj3 is the coercivity of third permanent magnet 4, and Br3 is the remanent magnetism of third permanent magnet 4.
Preferably, H2≤H3/2；Hcj2≤Hcj3.
In the present embodiment, the thickness of the second permanent magnet 3 and coercivity are respectively less than third permanent magnet 4.It is set using such
Meter, during being demagnetized, 4 thickness of third permanent magnet is thicker, and coercivity is higher, therefore its magnetic stable type is higher, will not
It is influenced by demagnetization is filled；In this way, only the second permanent magnet 3 is constantly being magnetized and is demagnetized during adjustable magnetic, and by
In 3 thinner thickness of the second permanent magnet, coercivity is lower, and the electric current that magnetizes required for magnetization process is small；Simultaneously because it is rectified with height
Stupid power magnet steel series connection, equivalent coercivity H cj is also higher, therefore its demagnetization current is relatively high, and normal condition, which is less prone to, moves back
Magnetic；
Wherein equivalent coercivity H j=(Hcj1*H1+Hcj2*H2)/(H1+H2)
And second the main function of permanent magnet 3 be only to provide a small amount of main flux for adjusting magnetic circuit useful flux range；
And magnetic stability is higher during the entire adjustable magnetic of third permanent magnet 4；Generally speaking it is magnetized in the whole process electricity using this structure
Stream is smaller, and cost is relatively low for required controller module；Demagnetization current is larger, and main flux stabilization is higher.
Since the second permanent magnet 3 is different with the thickness of third permanent magnet 4, each magnet steel arrangement of two low-coercivity magnetic pole
Relative position carries out special designing, and the radially height setting of thicker third permanent magnet 4 is higher or lower than the second permanent magnet 3
It can.
In conjunction with shown in Figure 8, in the present embodiment, radially height is higher than third permanent magnet 4 to the second permanent magnet 3
Height, the second permanent-magnet pole include the second permanent magnetism slot 6 and third permanent magnetism slot 7, the second permanent magnet 3 be arranged in the second permanent magnetism slot 6,
Third permanent magnet 4 is arranged in third permanent magnetism slot 7, and the second permanent magnet 3 partially protrudes into third permanent magnetism slot 7, and the second permanent magnet 3
It is H4 close to the maximum height of 3 side side wall of the second permanent magnet that the part of third permanent magnetism slot 7, which is protruded into, relative to third permanent magnetism slot 7,
Wherein H4/H2 < 0.3, H2 are the thickness of the second permanent magnet 3.
Preferably, the angle between the second permanent magnet 3 and third permanent magnet 4 is 30 ° of θ >.With the variation of ratio, magnetize
The amplitude that electric current reduces reduces, i.e., the range of decrease is smaller, and electric current is bigger, and entire size has an optimal proportional region.Entire ratio
Change procedure is magnet steel 4 in movement, although the range of decrease is larger when being greater than 0.3 or more, equally also influences adjustable magnetic multiple in this way, because
This limits H4/H2 < 0.3 herein, while limiting 30 ° of θ >, can match with the ratio, further increase motor efficiency.
Second permanent magnet 3 and the first permanent magnet 2 form cascaded structure, high-coercive force in normal course of operation in magnetic loop
Magnet steel, which has low-coercivity magnet steel, protects magnetic action, improves the equivalent coercivity of whole magnetic loop, promotes motor demagnetization current,
Circuit magnetic stability when guaranteeing to operate normally.
It is provided with the first permanent magnetism slot 5 when first permanent magnet 2 is W type, in the first permanent-magnet pole, the is provided in the second permanent-magnet pole
Two permanent magnetism slots 6, the first permanent magnet 2 are arranged in the first permanent magnetism slot 5, and the second permanent magnet 3 is arranged in the second permanent magnetism slot 6, and first
Angle between permanent magnetism slot 5 and the second permanent magnetism slot 6 is 1≤30 ° of -5 °≤θ.When first permanent magnet 2 is W type, high coercive is increased
The dosage of power magnet steel, while the magnetic interpolar structures of the first permanent magnet 2 and the second permanent magnet 3 are defined, it can effectively be promoted
Electric efficiency.
Preferably, when the first permanent magnet 2 is W type, it is provided with the first permanent magnetism slot 5 in the first permanent-magnet pole, the first permanent magnet 2 is set
It sets in the first permanent magnetism slot 5, in the section of the central axis perpendicular to rotor core 1, the outer edge of the first permanent magnetism slot 5 and
Minimum range between the outer edge of two permanent magnetism slots 6 is H, the first permanent magnet 2 with a thickness of H1, the second permanent magnetism slot 6 is close to first
Maximum distance between the side wall of permanent magnetism slot 5 and the first permanent-magnet pole and the interface of the second permanent-magnet pole is H5, in which:
H≥2H1；
0.5*H1≤H5≤H1。
Magnetic circuit reluctance can be effectively reduced using the design, generally can effectively promote electric efficiency.Use this simultaneously
Design can effectively increase interpolar magnetic conduction channel, and second permanent magnet 3 is to the short-circuit effect of entire magnetic circuit when increasing reversed, to increase
10% or more motor adjustable magnetic range is added.
In conjunction with shown in Figure 5, in the present embodiment, in the section of the central axis perpendicular to rotor core 1,
In the middle separated time of the radial direction of one permanent magnet 2, the radially outward edge of the first permanent magnet 2 and the radially outward edge of rotor core 1
Between spacing be L1, in the middle separated time of the radial direction of the second permanent magnet 3, the radially outward edge of the second permanent magnet 3 with turn
Spacing between the radially outward edge of sub- iron core 1 is L2, the first permanent magnet 2 with a thickness of H1, in which:
L1≥2L2；And L1 >=1.8*H1.
It is designed using the structure, the cost performance of motor can be made optimal, under the premise of the electric current that magnetizes increases less, most
The demagnetization current of the reduction motor of limits.
In conjunction with shown in Figure 3, in the present embodiment, the radially outward edge of the first permanent magnet 2 is provided with magnetic conduction bridge 8.
In conjunction with shown in Figure 4, in the present embodiment, the radially outward edge of the first permanent magnet 2 is provided with perforation rotor iron
The opening 9 of the radially outward edge of core 1.
It, can be by changing the position of the magnetic conduction bridge 8 of the first permanent magnet 2 and right by using the structure of Fig. 3 and Fig. 4
The outer circle of first permanent magnet 2 carries out the mode of opening design, changes magnetic line of force trend by force, increases the first permanent magnet 2 to second
The magnetic assist ability of permanent magnet 3, to further decrease the size of current that magnetizes.
In conjunction with shown in Figure 6, it is preferable that when the radially outward edge of the first permanent magnet 2 is provided with opening 9, opening 9 is close
The side of second permanent-magnet pole has bevelled edge 10.By carrying out the design of outer circle angle of chamfer on the basis of Fig. 5, can further subtract
The small electric current that magnetizes, while demagnetization current variation is less, ensure that the working performance of motor.
Preferably, when the radially outward edge of the first permanent magnet 2 is provided with opening 9, the permanent magnet of opening 9 and the second permanent-magnet pole
Between be provided with the groove 11 being recessed inwardly from the outer radial periphery edge of rotor core 1.The groove 11 can change the first permanent-magnet pole
And the second magnetic circuit trend between permanent-magnet pole, therefore can also play the role of reducing the electric current that magnetizes.
It is provided with the first permanent magnetism slot 5 in first permanent-magnet pole, the second permanent magnetism slot 6 and third permanent magnetism are provided in the second permanent-magnet pole
Slot 7, the first permanent magnet 2 are arranged in the first permanent magnetism slot 5, and the second permanent magnet 3 is arranged in the second permanent magnetism slot 6, third permanent magnet 4
Be arranged in third permanent magnetism slot 7, gap size between the first permanent magnet 2 and the first permanent magnetism slot 5 is D1, the second permanent magnet 3 with
Gap size between second permanent magnetism slot 6 is D2, and the gap size between third permanent magnet 4 and third permanent magnetism slot 7 is D3, wherein
D2 >=1.5D1, D3 >=1.5D1.
Preferably, D1 >=0.1mm.Magnetic slot gap is also used as a part in magnetic circuit, and gap is bigger, and magnetic resistance is bigger；?
This mode can also be used under special construction to increase the anti-degaussing ability of low-coercivity magnet steel, guarantee the magnetic of low-coercivity magnet steel
Property.
In conjunction with referring to shown in Fig. 3 to Fig. 7, embodiment according to the present utility model, magneto includes rotor, the electricity
Machine rotor is above-mentioned rotor.
Preferably, magneto further includes motor stator 12, and air gap 13 is formed between motor stator 12 and rotor, when
When being arranged fluted 11 on rotor core 1, the relationship between the 13 width δ of width k and air gap of groove 11 meets:
k≥1.2δ。
By limiting the relationship between the width of groove 11 and the width of rotor air gap 13, the electricity that magnetizes can be effectively reduced
Stream.
By using the above scheme of the utility model, by verifying, the adjustable magnetic range for guaranteeing motor promoted 10% with
When upper, the electric current decline 15% of magnetizing of motor can be made, demagnetization current promotes 10%, therefore effectively improves the workability of motor
Can, the load torque of the normal condition and demagnetized state that reduce motor is pulsed.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill of the art
For personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these improvement
It also should be regarded as the protection scope of the utility model with modification.
Claims (22)
1. a kind of rotor, which is characterized in that alternately arranged including rotor core (1) and along the circumferential of the rotor core (1)
The coercivity of the first permanent-magnet pole and the second permanent-magnet pole of cloth, the permanent magnet in first permanent-magnet pole is higher than second permanent-magnet pole
On permanent magnet coercivity.
2. rotor according to claim 1, which is characterized in that first permanent-magnet pole includes the first permanent magnet (2),
First permanent magnet (2) is symmetrical about the pole center line of first permanent-magnet pole.
3. rotor according to claim 2, which is characterized in that first permanent magnet (2) is in "-" type, V-type or W
Type.
4. rotor according to claim 2 or 3, which is characterized in that second permanent-magnet pole includes the second permanent magnet
(3), second permanent magnet (3) is symmetrical about the pole center line of second permanent-magnet pole.
5. rotor according to claim 4, which is characterized in that second permanent-magnet pole further includes third permanent magnet
(4), the third permanent magnet (4) is symmetrical about the pole center line of second permanent-magnet pole, and second permanent magnet (3) is located at
The both ends of the circumferential direction of the third permanent magnet (4).
6. rotor according to claim 5, which is characterized in that positioned at second permanent magnet of same permanent-magnet pole
(3) and the third permanent magnet (4) is in W type.
7. rotor according to claim 5, which is characterized in that first permanent magnet (2), second permanent magnet
(3) meet between the third permanent magnet (4):
0.9H1≤H2；
Hcj3*Br3*H3≤3/4*Hcj1*Br1*H1；
0.8Hcj3≤Hcj2≤1.3Hcj3；
Wherein H1 is the thickness of the first permanent magnet (2), and H2 is the thickness of the second permanent magnet (3), and H3 is the thickness of third permanent magnet (4)
Degree, Hcj1 are the coercivity of the first permanent magnet (2), and Br1 is the remanent magnetism of the first permanent magnet (2), and Hcj2 is the second permanent magnet (3)
Coercivity, Br2 are the remanent magnetism of the second permanent magnet (3), and Hcj3 is the coercivity of third permanent magnet (4), and Br3 is third permanent magnet
(4) remanent magnetism.
8. rotor according to claim 5, which is characterized in that the coercivity of the third permanent magnet (4) is greater than institute
State the coercivity of the second permanent magnet (3).
9. rotor according to claim 8, which is characterized in that second permanent magnet (3) and the third permanent magnetism
The thickness of body (4) is different and/or the trade mark is different.
10. rotor according to claim 5, which is characterized in that second permanent magnet (3) and the third permanent magnetism
Angle between body (4) is 30 ° of θ >.
11. rotor according to claim 4, which is characterized in that second permanent magnet (3) and described first is forever
Magnet (2) forms cascaded structure in magnetic loop.
12. rotor according to claim 4, which is characterized in that when first permanent magnet (2) is W type, described the
It is provided with the first permanent magnetism slot (5) in one permanent-magnet pole, the second permanent magnetism slot (6) is provided in second permanent-magnet pole, described first forever
In the first permanent magnetism slot (5), the second permanent magnet (3) setting is interior in the second permanent magnetism slot (6) for magnet (2) setting,
Angle between the first permanent magnetism slot (5) and the second permanent magnetism slot (6) is 1≤30 ° of -5 °≤θ.
13. rotor according to claim 5, which is characterized in that second permanent-magnet pole includes the second permanent magnetism slot (6)
With third permanent magnetism slot (7), the second permanent magnet (3) setting is in the second permanent magnetism slot (6), the third permanent magnet (4)
In the third permanent magnetism slot (7), second permanent magnet (3) is partially protruded into the third permanent magnetism slot (7), and described for setting
Second permanent magnet (3) protrude into the part of the third permanent magnetism slot (7) relative to the third permanent magnetism slot (7) close to described second forever
The maximum height of magnet (3) side side wall is H4, wherein H4/H2 < 0.3, and H2 is the thickness of the second permanent magnet (3).
14. rotor according to claim 4, which is characterized in that when first permanent magnet (2) is W type, described the
It is provided with the first permanent magnetism slot (5) in one permanent-magnet pole, the second permanent magnetism slot (6) is provided in second permanent-magnet pole, described first forever
Magnet (2) setting is in the first permanent magnetism slot (5), in the section of the central axis perpendicular to the rotor core (1), institute
Stating minimum range between the outer edge of the first permanent magnetism slot (5) and the outer edge of the second permanent magnetism slot (6) is H, described first
Permanent magnet (2) with a thickness of H1, the second permanent magnetism slot (6) close to the first permanent magnetism slot (5) side wall with described first forever
Maximum distance between magnetic pole and the interface of second permanent-magnet pole is H5, in which:
H≥2H1；
0.5*H1≤H5≤H1。
15. rotor according to claim 5, which is characterized in that in the central axis perpendicular to the rotor core (1)
In the section of line, in the middle separated time of the radial direction of first permanent magnet (2), the diameter of first permanent magnet (2) is outside
Spacing between edge and the radially outward edge of the rotor core (1) is L1, in the radial direction of second permanent magnet (3)
Middle separated time on, between the radially outward edge of second permanent magnet (3) and the radially outward edge of the rotor core (1) between
Away from for L2, the first permanent magnet (2) with a thickness of H1, in which:
L1≥2L2；And L1 >=1.8*H1.
16. rotor according to claim 2, which is characterized in that the radially outward edge of first permanent magnet (2) is set
It is equipped with the opening (9) for penetrating through the radially outward edge of the rotor core (1)；Or, the radially outward edge of first permanent magnet (2)
It is provided with magnetic conduction bridge (8).
17. rotor according to claim 16, which is characterized in that the radially outward edge of first permanent magnet (2)
When being provided with opening (9), the opening (9) has bevelled edge (10) close to the side of second permanent-magnet pole.
18. rotor according to claim 16, which is characterized in that the radially outward edge of first permanent magnet (2)
When being provided with opening (9), it is provided between opening (9) and the permanent magnet of second permanent-magnet pole from the rotor core
(1) groove (11) that outer radial periphery edge is recessed inwardly.
19. rotor according to claim 5, which is characterized in that be provided with the first permanent magnetism in first permanent-magnet pole
Slot (5) is provided with the second permanent magnetism slot (6) and third permanent magnetism slot (7) in second permanent-magnet pole, and first permanent magnet (2) sets
It sets in the first permanent magnetism slot (5), the second permanent magnet (3) setting is in the second permanent magnetism slot (6), and the third is forever
Magnet (4) setting in the third permanent magnetism slot (7), between first permanent magnet (2) and the first permanent magnetism slot (5) between
Gap is having a size of D1, and the gap size between second permanent magnet (3) and the second permanent magnetism slot (6) is D2, and the third is forever
Gap size between magnet (4) and the third permanent magnetism slot (7) is D3, wherein D2 >=1.5D1, D3 >=1.5D1.
20. rotor according to claim 19, which is characterized in that D1 >=0.1mm.
21. a kind of magneto, including rotor, which is characterized in that the rotor is any in claim 1 to 20
Rotor described in.
22. magneto according to claim 21, which is characterized in that the magneto further includes motor stator
(12), air gap (13) are formed between the motor stator (12) and rotor, it is fluted when being arranged on the rotor core (1)
(11) when, the relationship between the width k and air gap (13) width δ of the groove (11) meets:
k≥1.2δ。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821287377.XU CN208835851U (en) | 2018-08-09 | 2018-08-09 | motor rotor and permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821287377.XU CN208835851U (en) | 2018-08-09 | 2018-08-09 | motor rotor and permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208835851U true CN208835851U (en) | 2019-05-07 |
Family
ID=66308903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821287377.XU Expired - Fee Related CN208835851U (en) | 2018-08-09 | 2018-08-09 | motor rotor and permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208835851U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108777522A (en) * | 2018-08-09 | 2018-11-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor and permanent magnet motor |
| CN111446830A (en) * | 2020-04-30 | 2020-07-24 | 华中科技大学 | Double-stator tangential excitation magnetic field modulation motor |
| CN113224863A (en) * | 2021-06-03 | 2021-08-06 | 哈尔滨理工大学 | Novel permanent magnet auxiliary synchronous reluctance motor structure |
-
2018
- 2018-08-09 CN CN201821287377.XU patent/CN208835851U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108777522A (en) * | 2018-08-09 | 2018-11-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor and permanent magnet motor |
| CN111446830A (en) * | 2020-04-30 | 2020-07-24 | 华中科技大学 | Double-stator tangential excitation magnetic field modulation motor |
| CN113224863A (en) * | 2021-06-03 | 2021-08-06 | 哈尔滨理工大学 | Novel permanent magnet auxiliary synchronous reluctance motor structure |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Granted publication date: 20190507 |