CN104410186A - Permanent magnet motor rotor punching sheet for skewing - Google Patents

Permanent magnet motor rotor punching sheet for skewing Download PDF

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Publication number
CN104410186A
CN104410186A CN201410730457.8A CN201410730457A CN104410186A CN 104410186 A CN104410186 A CN 104410186A CN 201410730457 A CN201410730457 A CN 201410730457A CN 104410186 A CN104410186 A CN 104410186A
Authority
CN
China
Prior art keywords
permanent magnet
rotor
magnet motor
angle
axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410730457.8A
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Chinese (zh)
Inventor
王晓宇
孙宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenyang University of Technology
Original Assignee
Shenyang University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenyang University of Technology filed Critical Shenyang University of Technology
Priority to CN201410730457.8A priority Critical patent/CN104410186A/en
Publication of CN104410186A publication Critical patent/CN104410186A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/32Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2201/00Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/15Sectional machines

Abstract

The invention mainly relates to a permanent magnet motor rotor punching sheet for skewing and belongs to the technical field of permanent magnet motors. The positions of key grooves and ventilation holes are determined according to the relationship between the number of the key grooves and the number of the permanent magnets, and the angle between the ventilation holes and the permanent magnets, so that the key grooves are superposed after two sections of rotor cores are overlapped positively and negatively, the ventilation holes are smooth and consistent, and the aim of skewing is achieved, and main harmonic components influencing motor performances are effectively weakened. The permanent magnet motor rotor punching sheet has the advantages of simple process, cost conservation and good convenience for mounting.

Description

There is oblique pole rotor sheet of permanent magnet motor
Technical field
The present invention relates to permanent magnet motor technical field, particularly one is for weakening air gap flux density harmonic wave, reduces torque ripple, reduces vibration noise, the rotor sheet of permanent magnet motor of raising the efficiency.
Background technology
Many advantages such as it is little that permanent magnet motor has volume, lightweight, moment of inertia is little, rapid dynamic response speed, dynamic property are steady.In recent years, the research and extension application of permanent magnet motor is subject to the most attention of people.Therefore in Design of PM Motor process, have employed some effective measures to improve the performance of motor, such as in order to weaken harmony wave, the ways such as usual employing skewed stator slot or skewed-rotor, but skewed stator slot or skewed-rotor add the cost of design and the difficulty of technique in the design process sometimes.
Summary of the invention
Goal of the invention
In order to solve above-mentioned Problems existing, the invention provides a kind of tiltedly pole rotor sheet of permanent magnet motor and rotor, by to the ventilation hole of rotor punching and the design of two permanent magnet axis of symmetry deviation angles, reach the object of skewed-rotor after two-stage rotor positive and negative closed assembly unshakable in one's determination, and ensure that the design of closed assembly back vents is unanimously unobstructed, by changing the size of deviation angle, realize weakening the influence the major harmonic magnetic field of motor performance, and sum up and determine the position of rotor keyway and the relation of number of poles and ventilation hole deviation angle, ensure tiltedly extremely after rotor core to cross smoothly and rotating shaft is assembled, technique is simple, cost-saving, easy for installation.
Technical scheme
One has oblique pole rotor sheet of permanent magnet motor, comprise rotor surface and post permanent magnet and rotor punching, rotor punching has ventilation hole, the axis b that the axis a at the center of circle of ventilation hole and the place, the center of circle of rotating shaft claims with a pair pole pair is not on the same line, but certain angle [alpha] that has been staggered, rotor has keyway, and the angle of the axis of symmetry c and axis b that the center of circle crossed by keyway is β.
The number of poles of permanent magnet is n, n= (k=1,2,3 ...).
The number of ventilation hole is that m is individual uniform, m= (i=1,2,3,4 ...).
β=360/ + α (h≤k+1, h are positive integer, 0 < α < 360/m).
Rotor core is axially being divided into two-stage structure, and the two iron leg hearts are built up by punching and length is equal, and the two iron leg hearts are oppositely assembled each other by keyway axial alignment, and forming two close magnetic poles of two iron leg hearts angle that is staggered is 2 α.
Advantage and effect
Of the present invention is that one has oblique pole rotor sheet of permanent magnet motor, by the relation between keyway and permanent magnet number, angle between ventilation hole and permanent magnet, determine the position of keyway and ventilation hole, make the positive and negative closed assembly of rotor core reach the object of oblique pole, the major harmonic composition of the motor performance that effectively weakens the influence, this structural manufacturing process is simple, cost-saving, easy for installation.
Accompanying drawing explanation
Fig. 1 is rotor punching figure of the present invention.
Fig. 2 is rotor punching of the present invention oblique pole schematic diagram.
Fig. 3 is rotor of the present invention assembling schematic diagram.
Description of reference numerals:
1. permanent magnet, 2. rotor punching, 3. ventilation hole, 4. rotating shaft, 5. keyway.
embodiment:
Below in conjunction with accompanying drawing, the present invention is described further:
A kind of tiltedly pole rotor sheet of permanent magnet motor and rotor, comprise permanent magnet 1 and rotor punching 2 that rotor surface posts, rotor punching 2 has ventilation hole 3, the axis b of same a pair symmetric poles of axis a at the center of circle of ventilation hole 3 and the place, the center of circle of rotating shaft 4 is not on the same line, but certain angle [alpha] that has been staggered, rotor is provided with keyway 5, and the angle angle that keyway 5 is crossed between the axis of symmetry c in the center of circle and axis b is β.
The number of poles of permanent magnet 1 is n, n= , (k=1,2,3 ...).
The number of ventilation hole 3 is that m is individual uniform, m= , (i=1,2,3,4 ...).
Angle β=360/ + α (h≤k+1, h are positive integer, 0 < α < 360/m).
Rotor core is axially being divided into two-stage structure, and the two iron leg hearts are built up by rotor punching and length is equal, and the two iron leg hearts are oppositely assembled each other by keyway axial alignment, and forming two close magnetic poles of two iron leg hearts angle that is staggered is 2 α.
Embodiment:
For 8 pole motors, rotor surface posts 8 permanent magnets, at this moment k=3, h≤4, desirable h=3.Rotor punching has 8 ventilation holes, the axis a at the center of circle of ventilation hole 3 and the place, the center of circle of the rotating shaft 4 and axis b of a pair symmetric poles has been staggered certain angle [alpha], on rotor, the axis of symmetry c in the center of circle and the angle of axis b are β to keyway 5 excessively, at this moment β=45+ α, rotor punching is laminated into the rotor that the two iron leg hearts are equal, by the positive and negative closed assembly of two rotors, the keyway of two-stage rotor is alignd, ensure that the equipment of rotor core and rotating shaft, achieve ventilation hole unanimously unobstructed, reaching skewed-rotor angle is 2 α, as shown in Figure 2.
Operation principle of the present invention is as follows:
By the relation between keyway and permanent magnet number, angle between ventilation hole and permanent magnet, determine the position of keyway and ventilation hole, after making two-stage rotor positive and negative closed assembly unshakable in one's determination, keyway is overlapping, and ventilation hole is unanimously unimpeded, reaches the object of oblique pole, effectively weaken the influence the major harmonic composition of motor performance, this structural manufacturing process is simple, cost-saving, easy for installation.

Claims (5)

1. one kind has oblique pole rotor sheet of permanent magnet motor, comprise permanent magnet (1) and rotor punching (2) that rotor surface posts, it is characterized in that: rotor punching (2) has ventilation hole (3), the axis a at the center of circle of ventilation hole (3) and the place, the center of circle of rotating shaft (4) with a pair symmetric poles axis b between there is angle, angle is α, rotor is provided with keyway (5), and the angle angle of the axis of symmetry c and axis b that the center of circle crossed by keyway is β.
2. according to claim 1 have oblique pole rotor sheet of permanent magnet motor, it is characterized in that: the number of poles of permanent magnet (1) is n, n= , k=1,2,3 ...
3. according to claim 1 have oblique pole rotor sheet of permanent magnet motor, it is characterized in that: the number of ventilation hole (3) is that m is individual uniform, m= , i=1,2,3,4 ...
4. according to claim 1,2 or 3, there is oblique pole rotor sheet of permanent magnet motor, it is characterized in that: β=360/ + α, h≤k+1, h is positive integer, 0 < α < 360/m.
5. according to claim 1,2 or 3, there is oblique pole rotor sheet of permanent magnet motor, it is characterized in that: rotor core is axially being divided into two-stage structure, the two iron leg hearts are built up by rotor punching and length is equal, the two iron leg hearts are oppositely assembled each other by keyway axial alignment, and forming two close magnetic poles of two iron leg hearts angle that is staggered is 2 α.
CN201410730457.8A 2014-12-05 2014-12-05 Permanent magnet motor rotor punching sheet for skewing Pending CN104410186A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410730457.8A CN104410186A (en) 2014-12-05 2014-12-05 Permanent magnet motor rotor punching sheet for skewing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410730457.8A CN104410186A (en) 2014-12-05 2014-12-05 Permanent magnet motor rotor punching sheet for skewing

Publications (1)

Publication Number Publication Date
CN104410186A true CN104410186A (en) 2015-03-11

Family

ID=52647790

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410730457.8A Pending CN104410186A (en) 2014-12-05 2014-12-05 Permanent magnet motor rotor punching sheet for skewing

Country Status (1)

Country Link
CN (1) CN104410186A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106469962A (en) * 2015-08-19 2017-03-01 东元电机股份有限公司 Dislocation type rotor core and its manufacture method
CN107086685A (en) * 2017-04-14 2017-08-22 深圳市正德智控股份有限公司 A kind of design method of motor magnet
CN114362399A (en) * 2020-11-18 2022-04-15 华为数字能源技术有限公司 Motor rotor, motor, power assembly and electric vehicle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106469962A (en) * 2015-08-19 2017-03-01 东元电机股份有限公司 Dislocation type rotor core and its manufacture method
CN107086685A (en) * 2017-04-14 2017-08-22 深圳市正德智控股份有限公司 A kind of design method of motor magnet
CN107086685B (en) * 2017-04-14 2020-04-07 深圳市正德智控股份有限公司 Design method of motor magnet
CN114362399A (en) * 2020-11-18 2022-04-15 华为数字能源技术有限公司 Motor rotor, motor, power assembly and electric vehicle
CN114362399B (en) * 2020-11-18 2024-03-01 华为数字能源技术有限公司 Motor rotor, motor, power assembly and electric vehicle

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Application publication date: 20150311