CN106655680A - Adjustable-magnetic rotation motor - Google Patents

Adjustable-magnetic rotation motor Download PDF

Info

Publication number
CN106655680A
CN106655680A CN201710105126.9A CN201710105126A CN106655680A CN 106655680 A CN106655680 A CN 106655680A CN 201710105126 A CN201710105126 A CN 201710105126A CN 106655680 A CN106655680 A CN 106655680A
Authority
CN
China
Prior art keywords
adjustable
magnetic
core
salient pole
motor
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.)
Granted
Application number
CN201710105126.9A
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Chinese (zh)
Other versions
CN106655680B (en
Inventor
王娜
兰宏伟
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Lanzhou Jiaotong University
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Lanzhou Jiaotong University
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Priority to CN201710105126.9A priority Critical patent/CN106655680B/en
Publication of CN106655680A publication Critical patent/CN106655680A/en
Application granted granted Critical
Publication of CN106655680B publication Critical patent/CN106655680B/en
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Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • 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
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/02—Details
    • H02K21/021—Means for mechanical adjustment of the excitation flux
    • H02K21/028—Means for mechanical adjustment of the excitation flux by modifying the magnetic circuit within the field or the armature, e.g. by using shunts, by adjusting the magnets position, by vectorial combination of field or armature sections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

The invention relates to the field of a rotation motor, in particular to an adjustable-magnetic rotation motor. The adjustable-magnetic rotation motor comprises an enclosure, a stator core, a rotor core and a rotation shaft, wherein the stator core is fixed on the enclosure, a stator winding is embedded in the stator core, a plurality of tangential permanent-magnet magnetic steel are arranged in the rotor core, N poles and S poles of the tangential permanent-magnet magnetic steel are alternatively arranged, one end of the rotor core in an axial direction is connected with the rotation shaft, a space is arranged between the other end of the rotor core and the rotation shaft, and a magnetic regulation ring is arranged in the space, can axially rotate and move and is connected with the rotation shaft by a spiral spline. Regulation on effective magnetic flux of a main gap is performed by the magnetic regulation ring, so that the motor has high magnetic regulation capability to further achieve high flux-weakening speed expansion capability; meanwhile, flux weakening of the permanent-magnet motor requiring a large direct-axis demagnetization current is prevented, and high-efficiency and high-power factors of the motor are ensured; and moreover, the permanent-magnet magnetic steel has no demagnetization risk, and the motor reliability is improved.

Description

A kind of adjustable magnet-type rotational electrical machine
Technical field
The present invention relates to rotating electrical machine art, more particularly to a kind of adjustable magnet-type rotational electrical machine.
Background technology
Magneto has been obtained widely with advantages such as its high efficiency, high torque density, high reliability on electric automobile Using, but electric automobile drives the power output performance of the wide scope with motor from slow-speed of revolution area to high rotating speed area to it There is high request, in low speed, need low-speed big to export, to meet the starting of car load, for example, accelerate, climb；At a high speed When need to keep invariable power, required with the max. speed for meeting car load, and overtaking other vehicles in high speed.And the magnetic field of magneto It is difficult to adjust, although the regulation of permanent magnetic field can be carried out by weak magnetic, on the one hand weak magnetic is still not enough to support electronic The required big rotating speed range of operation of automobile, and due to the presence of stator current direct-axis component so that the copper loss of stator winding Greatly increase, reduce the efficiency of magneto.On the other hand, during weak magnetism speed expansion, inevitably there is permanent magnetism The more or less demagnetization of magnet steel, reduces the reliability of magneto.It can be seen that, traditional magneto is substantially difficult to meet whole The performance requirement in individual region.
The content of the invention
For the deficiencies in the prior art, the present invention provides a kind of adjustable magnet-type rotational electrical machine.
To realize above-mentioned technical purpose, the present invention is adopted the following technical scheme that and is achieved.
A kind of adjustable magnet-type rotational electrical machine, including casing, stator core, rotor core, rotating shaft；It is fixed described on the casing Stator core；The stator core embeds stator winding；The permanent magnetic steel of the built-in multiple tangentials of the rotor core, tangential Permanent magnetic steel N levels and S levels be arranged alternately；In the axial direction one end is connected the rotor core with the rotating shaft, the other end with Space is provided between the rotating shaft；Be disposed with the space can axial-rotation movement adjustable magnetic ring.
Preferably, the gap between the stator core and rotor core is the first air gap, and the radial direction of first air gap is long Spend for Δ1；The first salient pole is extended in the mediad inner side of the magnetic pole of the rotor core, and the outer wall of the adjustable magnetic ring prolongs laterally Stretch out the second salient pole；Gap between first salient pole and second salient pole be interstice, the footpath of the interstice It is Δ to length2, when the first salient pole and the second salient pole are corresponded, Δ2Less than Δ1。
Preferably, one end of the rotating shaft is supported on first end lid by clutch shaft bearing, and the other end passes through second bearing It is supported on the second end cap；First end cap and second end cap are fixed on the casing.
Preferably, the stator core by hot jacket cold pressing or alternate manner coordinate be fixed on the casing.
Preferably, the adjustable magnetic ring is connected with the rotating shaft by helical spline, and can be in rotary moving in rotating shaft.
Beneficial effects of the present invention are：
The present invention carries out main air gap (gap between i.e. described stator core and rotor core) effectively magnetic by adjustable magnetic ring Logical regulation so that motor has very big adjustable magnetic ability, and then realizes very high weak magnetism speed expansion ability, while avoiding permanent magnetism Motor needs to carry out weak magnetic by very big d-axis demagnetizing current, it is ensured that the high efficiency and High Power Factor of motor, and permanent magnetism Magnet steel improves the reliability of motor without demagnetization risk.
Description of the drawings
Fig. 1 show longitudinal sectional view during embodiment of the present invention motor low cruise.
Fig. 2 show longitudinal sectional view during embodiment of the present invention high speed operation of motor.
Fig. 3 show transverse sectional view during embodiment of the present invention motor low cruise.
Fig. 4 show transverse sectional view during embodiment of the present invention high speed operation of motor.
In figure：Rotating shaft 1；Clutch shaft bearing 2-1；Second bearing 2-2；First end cap 3-1；Second end cap 3-2；Casing 4；Stator Winding 5；Stator core 6；Rotor core 7；Adjustable magnetic ring 8；Permanent magnetic steel 9；First salient pole 10；Second salient pole 11；First air gap Radical length Δ1；The radical length Δ of interstice2。
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described：
As shown in Figures 1 to 4, a kind of adjustable magnet-type rotational electrical machine that the present invention is provided, including casing 4, stator core 6, rotor Iron core 7, rotating shaft 1；The stator core 6 is fixed on the casing 4；The stator core 6 embeds stator winding 5；The rotor The built-in multiple tangential permanent magnetic magnet steel 9 of iron core 7, the N levels and S levels of the permanent magnetic steel 9 of multiple tangentials are arranged alternately；The rotor In the axial direction one end is connected iron core 7 with the rotating shaft 1, and between the other end and the rotating shaft 1 space is provided with；It is disposed with the space Can axial-rotation movement adjustable magnetic ring 8.
One end of the rotating shaft 1 is supported on the first end cap 3-1 by clutch shaft bearing 2-1, and the other end passes through second bearing 2-2 is supported on the second end cap 3-2；The first end cap 3-1 and the second end cap 3-2 are fixed on the casing 4.
The stator core 6 passes through hot jacket, colds pressing or be otherwise secured on the casing 4.Preferably adopt hot jacket Mode.
The adjustable magnetic ring 8 is connected by helical spline with rotating shaft, and can be in rotary moving in rotating shaft.
Gap between the stator core 6 and rotor core 7 be Permanent Magnet and Electric owner's air gap, the Permanent Magnet and Electric owner air gap Also referred to as the first air gap, the radical length of first air gap is Δ1, unit is mm.The mediad of the magnetic pole of the rotor core 7 The first salient pole 10 is extended in inner side, and the outer wall of the adjustable magnetic ring 8 extends laterally the second salient pole 11；First salient pole 10 with Gap between second salient pole 11 is interstice, and the radical length of the interstice is Δ2, unit is mm；When When one salient pole 10 and the second salient pole 11 are corresponded, Δ2Less than Δ1。
The operation principle of motor of the present invention：
As shown in figure 3, during electric rotating machine low cruise, needing larger output torque, now, second on adjustable magnetic ring 8 Distance is farthest between salient pole 11 and the first salient pole 10 of the rotor core 7, and the magnetic flux of the closure of Jing adjustable magnetics ring 8 is little, Ji Huquan The permanent magnet flux in portion provides torque output through the main air gap of motor, externally, and the magnetic flux path of permanent magnetic steel 9 is：Magnetic flux is from forever The N poles of magnetic magnet steel 9 are set out, and the main air gap of Jing rotor cores 7, motor, the main air gap of stator core 6, motor, rotor core 7 are returned to forever The S poles of magnetic magnet steel 9 constitute closed-loop path.
As shown in figure 4, when electric rotating machine runs to high-speed working condition and needs weak magnetic, adjustable magnetic ring 8 is under external force along axle Into the space moved between rotor core 7 and rotating shaft 1, while rotated a certain angle according to the helical spline for setting making The first salient pole 10 for obtaining the second salient pole 11 on now adjustable magnetic ring 8 and rotor core is corresponded (two in the i.e. Fig. 4 of one-to-one corresponding The outer face of salient pole is oppositely arranged), due to Δ2Less than Δ1, according to " magnetic resistance is minimum " principle, the now generation of permanent magnetic steel 9 is forever Magnetic magnetic flux significant portion from its permanent magnetic steel 9N poles, the first salient pole 10, interstice of Jing rotor cores, adjustable magnetic ring 8, Two air gaps, the first salient pole 10 of rotor core, the inner side S poles composition closed-loop path for returning to permanent magnetic steel 9.This part permanent magnet flux Without the first air gap, torque output, invalid magnetic flux are not externally provided.
At present, the permanent magnetic field substantially constant of electric rotating machine, the bad regulation of size and Orientation in magnetic field.By adjustable magnetic ring 8 The useful flux to adjust by the first air gap in rotary moving, it is simple structure, compact, can effectively carry out weak magnetism speed expansion, It is very suitable for the occasion to low speed high torque and the operation of high rotating speed.
Obviously, those skilled in the art can carry out the essence of various changes and modification without deviating from the present invention to the present invention God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising these changes and modification.

Claims (5)

1. a kind of adjustable magnet-type rotational electrical machine, including casing (4), stator core (6), rotor core (7), rotating shaft (1)；The casing (4) stator core (6) is fixed on；The stator core (6) embeds stator winding (5)；It is characterized in that：The rotor iron The permanent magnetic steel (9) of the built-in multiple tangentials of core (7), the N levels and S levels of permanent magnetic steel (9) are arranged alternately；The rotor core (7) in the axial direction one end is connected with the rotating shaft (1), and between the other end and the rotating shaft (1) space is provided with；Arrange in the space Have can axial-rotation movement adjustable magnetic ring (8).
2. adjustable magnet-type rotational electrical machine according to claim 1, it is characterised in that：The stator core (6) and the rotor Gap between iron core (7) is the first air gap, and the radical length of first air gap is Δ1；The magnetic pole of the rotor core (7) The first salient pole (10) is extended in mediad inner side, and the outer wall of the adjustable magnetic ring (8) extends laterally the second salient pole (11)；It is described Gap between first salient pole (10) and second salient pole (11) is interstice, and the radical length of the interstice is Δ2, when the first salient pole (10) and the second salient pole (11) are corresponded, Δ2Less than Δ1。
3. adjustable magnet-type rotational electrical machine according to claim 1, it is characterised in that：One end of the rotating shaft (1) passes through first Bearing (2-1) is supported on the first end cap (3-1), and the other end is supported on the second end cap (3-2) by second bearing (2-2)； First end cap (3-1) and second end cap (3-2) are connected on the casing (4).
4. adjustable magnet-type rotational electrical machine according to claim 1, it is characterised in that：The stator core (6) by hot jacket or The mode that person colds pressing is fixed on the casing (4).
5. adjustable magnet-type rotational electrical machine according to claim 1, it is characterised in that：The adjustable magnetic ring (8) passes through with rotating shaft (1) Helical spline connects, and can be in rotary moving in the rotating shaft (1).
CN201710105126.9A 2017-02-25 2017-02-25 Adjustable magnetic rotating motor Active CN106655680B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201710105126.9A CN106655680B (en) 2017-02-25 2017-02-25 Adjustable magnetic rotating motor

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CN106655680B CN106655680B (en) 2023-09-05

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108724244A (en) * 2018-05-18 2018-11-02 深圳超磁机器人科技有限公司 A kind of joint of robot module
CN108964393A (en) * 2018-07-27 2018-12-07 杨世国 VPMRM can be changed permanent magnet reluctance motor
GB2567671A (en) * 2017-10-20 2019-04-24 Rolls Royce Plc Permanent magnet electrical machine
CN110394825A (en) * 2019-05-30 2019-11-01 苏州大学 Selective compliance assembly robot arm and internal rotor joint arrangement
CN113422496A (en) * 2021-05-13 2021-09-21 江苏大学 High-positioning-precision mixed magnetic source magnetic screw and multi-harmonic cooperative modulation method thereof
JP2023071357A (en) * 2021-11-11 2023-05-23 西芝電機株式会社 Rotor of rotary electric machine
CN117691778A (en) * 2024-02-04 2024-03-12 深圳市鑫昌泰科技有限公司 Novel rotor core, rotor and new energy motor
CN108724244B (en) * 2018-05-18 2024-05-31 深圳超磁机器人科技有限公司 Robot joint module

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CN104883030A (en) * 2015-04-14 2015-09-02 苏州威莫磁力传动技术有限公司 Novel permanent magnet speed regulator using rotary salient pole to adjust magnetic flux
CN104935111A (en) * 2015-07-09 2015-09-23 兰州交通大学 Mechanical adjustable magnet type rotation motor
CN104979991A (en) * 2015-03-24 2015-10-14 杨世国 Permanent magnet inner rotor brushless motor capable of continuously changing speed adaptively according to torque changes
CN205004939U (en) * 2015-09-15 2016-01-27 南京艾凌节能技术有限公司 Tombarthite permanent magnetism variable speed clutch
CN105978272A (en) * 2016-05-13 2016-09-28 浙江长兴德纳克斯动力科技有限公司 Mechanical-type flux-weakening motor
CN106253617A (en) * 2015-06-15 2016-12-21 现代自动车株式会社 Electric motor structure for variable counter electromotive force
CN206506426U (en) * 2017-02-25 2017-09-19 兰州交通大学 Adjustable magnet-type rotational electrical machine

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JPH08214519A (en) * 1995-02-06 1996-08-20 Akira Chiba Both-saliency motor-generator using permanent magnet
US20030057792A1 (en) * 2001-09-27 2003-03-27 Tai-Her Yang Rotor axial activation modulation of electric machinery due to centrifugal force
US20040245878A1 (en) * 2002-06-26 2004-12-09 Kim Pyung Kyu Brushless direct-current motor of radial core type having a structure of double rotors and method for making the same
EP2306621A1 (en) * 2002-09-20 2011-04-06 Tai-Her Yang Axially movable rotor
JP2004222350A (en) * 2003-01-09 2004-08-05 Nippon Steel Corp Permanent magnet type rotating electric machine
JP2006014466A (en) * 2004-06-24 2006-01-12 Toyota Central Res & Dev Lab Inc Axial motor
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WO2009013934A1 (en) * 2007-07-26 2009-01-29 Kura Laboratory Corporation Flux shunt control rotary electric machine system
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JP2015122886A (en) * 2013-12-24 2015-07-02 日本ピストンリング株式会社 Axial variable gap type rotary electric machine
CN103944311A (en) * 2014-04-26 2014-07-23 滨州市金诺机电科技有限公司 Magnetic field regulating method for permanent magnet motor and permanent magnet motor high in magnetism regulation capacity
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CN104883030A (en) * 2015-04-14 2015-09-02 苏州威莫磁力传动技术有限公司 Novel permanent magnet speed regulator using rotary salient pole to adjust magnetic flux
CN106253617A (en) * 2015-06-15 2016-12-21 现代自动车株式会社 Electric motor structure for variable counter electromotive force
CN104935111A (en) * 2015-07-09 2015-09-23 兰州交通大学 Mechanical adjustable magnet type rotation motor
CN205004939U (en) * 2015-09-15 2016-01-27 南京艾凌节能技术有限公司 Tombarthite permanent magnetism variable speed clutch
CN105978272A (en) * 2016-05-13 2016-09-28 浙江长兴德纳克斯动力科技有限公司 Mechanical-type flux-weakening motor
CN206506426U (en) * 2017-02-25 2017-09-19 兰州交通大学 Adjustable magnet-type rotational electrical machine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2567671A (en) * 2017-10-20 2019-04-24 Rolls Royce Plc Permanent magnet electrical machine
CN108724244A (en) * 2018-05-18 2018-11-02 深圳超磁机器人科技有限公司 A kind of joint of robot module
CN108724244B (en) * 2018-05-18 2024-05-31 深圳超磁机器人科技有限公司 Robot joint module
CN108964393A (en) * 2018-07-27 2018-12-07 杨世国 VPMRM can be changed permanent magnet reluctance motor
CN110394825A (en) * 2019-05-30 2019-11-01 苏州大学 Selective compliance assembly robot arm and internal rotor joint arrangement
CN113422496A (en) * 2021-05-13 2021-09-21 江苏大学 High-positioning-precision mixed magnetic source magnetic screw and multi-harmonic cooperative modulation method thereof
CN113422496B (en) * 2021-05-13 2022-06-21 江苏大学 High-positioning-precision mixed magnetic source magnetic screw and multi-harmonic cooperative modulation method thereof
JP2023071357A (en) * 2021-11-11 2023-05-23 西芝電機株式会社 Rotor of rotary electric machine
JP7299293B2 (en) 2021-11-11 2023-06-27 西芝電機株式会社 Rotor of rotary electric machine
CN117691778A (en) * 2024-02-04 2024-03-12 深圳市鑫昌泰科技有限公司 Novel rotor core, rotor and new energy motor
CN117691778B (en) * 2024-02-04 2024-04-05 深圳市鑫昌泰科技有限公司 Novel rotor core, rotor and new energy motor

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