CN102355073A - Permanent magnet motor rotor with step skewed poles - Google Patents

Permanent magnet motor rotor with step skewed poles Download PDF

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Publication number
CN102355073A
CN102355073A CN2011103309390A CN201110330939A CN102355073A CN 102355073 A CN102355073 A CN 102355073A CN 2011103309390 A CN2011103309390 A CN 2011103309390A CN 201110330939 A CN201110330939 A CN 201110330939A CN 102355073 A CN102355073 A CN 102355073A
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CN
China
Prior art keywords
rotor
permanent magnet
core
rotor core
punching
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
CN2011103309390A
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Chinese (zh)
Inventor
彭俊
李益丰
符敏利
何思源
黄景贤
元约平
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.)
Zhuzhou CSR Times Electric Co Ltd
Original Assignee
Zhuzhou CSR Times Electric Co Ltd
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 Zhuzhou CSR Times Electric Co Ltd filed Critical Zhuzhou CSR Times Electric Co Ltd
Priority to CN2011103309390A priority Critical patent/CN102355073A/en
Publication of CN102355073A publication Critical patent/CN102355073A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a permanent magnet motor rotor, and in particular relates to a permanent magnet motor rotor with step skewed poles. The rotor comprises a rotor core formed by punched rotor plates and a permanent magnet arranged in the rotor core, wherein the rotor core is formed by the same punched rotor plates; the rotor core is axially divided into two sections in equal length; and when the two sections of rotor cores are laminated, the front sides of the punched rotor plates of one section of rotor core are laminated with the reverse sides of the punched rotor plates of the other section of rotor core, so that pole center lines corresponding to the two sections of rotor cores, of the permanent magnet form an included angle theta3. The permanent magnet motor rotor has the following beneficial effect that: the permanent magnet motor rotor can effectively reduce the cogging torque and has better production manufacturability by dividing the rotor core into two sections in equal length.

Description

The permanent magnet machine rotor of the oblique utmost point of a kind of segmentation
Technical field
The present invention relates to a kind of permanent magnet machine rotor, the permanent magnet machine rotor of the oblique utmost point of especially a kind of segmentation.
Background technology
Permagnetic synchronous motor has that volume is little, light weight and advantage such as energy-efficient, has obtained extensive use at commercial production, aspect such as civilian.Along with the appearance of novel permanent magnetic material, modern rare earth permanent-magnet synchronization motor has to high-power and high speed direction Development Trend, and the application in drive system also more and more widely.
In the design of high power permanent magnet synchronous motor; Its stator winding often adopts the moulding winding, and stator punching adopts the rectangular aperture groove, and width of rebate is big; Stronger slot effect be can produce, bigger slot ripples electromotive force, cogging torque and torque ripple are attended by in that motor is in service.In order to weaken slot effect, adopting skewed stator slot or skewed-rotor is the method for using always, but form-wound stator skewed slot complex process possibly cause insulation harm, so adopt the method for skewed-rotor.
Skewed-rotor is divided into two types, and one type is the continuously oblique utmost point, and another kind of then is the oblique utmost point of segmentation.Adopt that tiltedly utmost point effect is ideal continuously, but built-in rotor since continuously tiltedly during the utmost point permanent magnet shape special or setting-in is difficult, the actual very difficulty that implements; Technology during the oblique utmost point of segmentation is simple relatively, so adopt segmentation tiltedly extremely more in the reality.
The effect of the oblique utmost point of segmentation and oblique polar angle degree, segments are relevant.Tiltedly the polar angle degree can calculate according to the design of electrical motor theory.Can know that theoretically segments is many more, tiltedly the effect of the utmost point is just good more, yet, increase segments, will inevitably strengthen the complexity of explained hereafter, reduce the reliability of motor.
Summary of the invention
The objective of the invention is,, the permanent magnet machine rotor of the oblique utmost point of a kind of segmentation is provided, can effectively reduce cogging torque, have higher reliability and better manufacturability again to the deficiency of prior art.
Technical scheme of the present invention does; The permanent magnet machine rotor of the oblique utmost point of a kind of segmentation; Comprise the rotor core of forming by rotor punching and be located at the permanent magnet in the rotor core; It is characterized in that; Said rotor core is adopted with a kind of rotor punching and is formed; Said rotor core axially is being divided into two sections of equal in length; The positive rotor punching reverse side with other end rotor core of the rotor punching of one section rotor core laminated when the two-stage rotor iron core laminated, and between the pole center line of two-stage rotor corresponding permanent magnet unshakable in one's determination angle theta was arranged 3
Rotor punching is provided with keyway, and the two iron leg hearts laminate that the back keyway overlaps and to the location positioning that laminates of the two iron leg hearts.
Through the prototype test contrast, the motor cogging torque value of not segmentation is 80N.m, and adopting the motor cogging torque value of two sections oblique utmost points of branch of the present invention is 20N.m, has the effect of better reduction cogging torque from visible its of result of the test.
Know that by above the present invention is as the permanent magnet machine rotor of the oblique utmost point of a kind of segmentation,, can effectively reduce cogging torque and have production technology property preferably through rotor core being divided into two sections of equal in length.
Description of drawings
Fig. 1 is a rotor punching Facad structure sketch map according to the invention;
Fig. 2 is a rotor punching reverse side structural representation according to the invention;
Fig. 3 is for rotor punching of the present invention is positive, reverse side laminated structure sketch map;
In the drawings:
The positive permanent magnet trough of 1-punching; 2-punching front pole center line; The 3-keyway;
The 4-rotor punching is positive; 5-punching reverse side permanent magnet trough; 6-punching reverse side pole center line;
7-rotor punching reverse side; θ 1-rotor punching front pole center line and keyway center line angle;
θ 2-rotor punching reverse side pole center line and keyway center line angle.
Embodiment
Like Fig. 1-shown in Figure 3; The permanent magnet machine rotor of the oblique utmost point of a kind of segmentation; Comprise the rotor core of forming by rotor punching and be located at the permanent magnet in the rotor core; Rotor core is adopted with a kind of rotor punching and is formed; Rotor core axially is being divided into two sections of equal in length; The rotor punching of one section rotor core positive 4 laminated with the rotor punching reverse side 7 of the other end rotor core when two-stage rotor iron core laminated, and making between pole center line 2 and the pole center line 6 of two-stage rotor corresponding permanent magnet unshakable in one's determination has angle theta 3
Rotor punching is provided with that keyway 3, the two iron leg hearts laminate that back keyway 3 overlaps and to the location positioning that laminates of the two iron leg hearts.
Rotor punching is positive, reverse side laminates pole center line angle theta 3Should be 1/2 of the best angle of bevel of even skewed slot motor, make it can farthest weaken slot effect, θ 3Concrete computational methods can be referring to document " applied analysis of the oblique utmost point of rotor segmentation in permanent magnet synchronous motor ", small and special electric machine, 2009 the 7th phases.

Claims (2)

1. the permanent magnet machine rotor of the oblique utmost point of segmentation; Comprise the rotor core of forming by rotor punching and be located at the permanent magnet in the rotor core; It is characterized in that; Said rotor core is adopted with a kind of rotor punching and is formed; Said rotor core axially is being divided into two sections of equal in length; When the two-stage rotor iron core laminates; The rotor punching of one section rotor core positive (4) laminates with the rotor punching reverse side (7) of other end rotor core; Between the pole center line (2,6) of two-stage rotor corresponding permanent magnet unshakable in one's determination angle theta is arranged 3
2. according to the permanent magnet machine rotor of the oblique utmost point of the said a kind of segmentation of claim 1, it is characterized in that rotor punching is provided with keyway (3), the two iron leg hearts laminate that back keyway (3) overlaps and to the location positioning that laminates of the two iron leg hearts.
CN2011103309390A 2011-10-27 2011-10-27 Permanent magnet motor rotor with step skewed poles Pending CN102355073A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011103309390A CN102355073A (en) 2011-10-27 2011-10-27 Permanent magnet motor rotor with step skewed poles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011103309390A CN102355073A (en) 2011-10-27 2011-10-27 Permanent magnet motor rotor with step skewed poles

Publications (1)

Publication Number Publication Date
CN102355073A true CN102355073A (en) 2012-02-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011103309390A Pending CN102355073A (en) 2011-10-27 2011-10-27 Permanent magnet motor rotor with step skewed poles

Country Status (1)

Country Link
CN (1) CN102355073A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102868246A (en) * 2012-09-19 2013-01-09 武汉新能源接入装备与技术研究院有限公司 High-capacity low-speed permanent-magnet wind-driven generator
CN103516083A (en) * 2013-10-10 2014-01-15 东方电气集团东方电机有限公司 Magnetic pole punching piece and permanent magnet generator rotor iron core with same
CN104065226A (en) * 2014-06-19 2014-09-24 浙江中源电气有限公司 Permanent magnet vector motor
CN106357072A (en) * 2016-08-31 2017-01-25 湖北立锐机电有限公司 Spoke-type rotor structure and interior permanent magnet motor adopting same
CN107196436A (en) * 2017-07-03 2017-09-22 广东威灵电机制造有限公司 Rotor punching, skewed pole rotor and magneto
CN107482802A (en) * 2017-08-30 2017-12-15 广东威灵电机制造有限公司 Stator module, motor and compressor
CN109964388A (en) * 2016-11-24 2019-07-02 爱信艾达株式会社 The manufacturing method of rotor for dynamo-electric machine and rotor for dynamo-electric machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4510680A (en) * 1982-12-27 1985-04-16 General Electric Company Method of making a permanent magnet rotor
CN2662525Y (en) * 2003-11-28 2004-12-08 北京明正维元电机技术有限公司 AC permanent-magnet synchronous servo motor
CN1613172A (en) * 2003-04-11 2005-05-04 三菱电机株式会社 Permanent magnetic motor
CN2775926Y (en) * 2005-03-08 2006-04-26 曹小元 Novel self starting permanent magnetic synchronous motor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4510680A (en) * 1982-12-27 1985-04-16 General Electric Company Method of making a permanent magnet rotor
CN1613172A (en) * 2003-04-11 2005-05-04 三菱电机株式会社 Permanent magnetic motor
CN2662525Y (en) * 2003-11-28 2004-12-08 北京明正维元电机技术有限公司 AC permanent-magnet synchronous servo motor
CN2775926Y (en) * 2005-03-08 2006-04-26 曹小元 Novel self starting permanent magnetic synchronous motor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102868246A (en) * 2012-09-19 2013-01-09 武汉新能源接入装备与技术研究院有限公司 High-capacity low-speed permanent-magnet wind-driven generator
CN103516083A (en) * 2013-10-10 2014-01-15 东方电气集团东方电机有限公司 Magnetic pole punching piece and permanent magnet generator rotor iron core with same
CN103516083B (en) * 2013-10-10 2016-01-27 东方电气集团东方电机有限公司 A kind of pole lamination and adopt the rotor of permanent-magnetic power generator of this pole lamination unshakable in one's determination
CN104065226A (en) * 2014-06-19 2014-09-24 浙江中源电气有限公司 Permanent magnet vector motor
CN106357072A (en) * 2016-08-31 2017-01-25 湖北立锐机电有限公司 Spoke-type rotor structure and interior permanent magnet motor adopting same
CN109964388A (en) * 2016-11-24 2019-07-02 爱信艾达株式会社 The manufacturing method of rotor for dynamo-electric machine and rotor for dynamo-electric machine
CN109964388B (en) * 2016-11-24 2021-11-23 爱信艾达株式会社 Rotor for rotating electrical machine and method for manufacturing rotor for rotating electrical machine
CN107196436A (en) * 2017-07-03 2017-09-22 广东威灵电机制造有限公司 Rotor punching, skewed pole rotor and magneto
CN107482802A (en) * 2017-08-30 2017-12-15 广东威灵电机制造有限公司 Stator module, motor and compressor

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Application publication date: 20120215