CN109104009A - A kind of birotor permanent magnetic vernier motor - Google Patents

A kind of birotor permanent magnetic vernier motor Download PDF

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Publication number
CN109104009A
CN109104009A CN201811008183.6A CN201811008183A CN109104009A CN 109104009 A CN109104009 A CN 109104009A CN 201811008183 A CN201811008183 A CN 201811008183A CN 109104009 A CN109104009 A CN 109104009A
Authority
CN
China
Prior art keywords
stator
rotor
permanent magnet
internal rotor
internal
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
CN201811008183.6A
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Chinese (zh)
Inventor
徐奇伟
孙静
耿克举
王孚康
郑学林
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.)
Chongqing University
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Chongqing University
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 Chongqing University filed Critical Chongqing University
Priority to CN201811008183.6A priority Critical patent/CN109104009A/en
Publication of CN109104009A publication Critical patent/CN109104009A/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
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/17Stator 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
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/14Stator cores with salient poles
    • H02K1/146Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • 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
    • H02K1/24Rotor cores with salient poles ; Variable reluctance rotors
    • 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
    • H02K1/2786Outer rotors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K16/00Machines with more than one rotor or stator
    • H02K16/02Machines with one stator and two or more rotors
    • 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
    • H02K2201/03Machines characterised by aspects of the air-gap between rotor and stator

Abstract

The invention discloses a kind of birotor permanent magnetic vernier motors, it includes motor casing (1), it is internal in motor casing (1), ecto-entad is successively laid with stator (2), outer rotor (3) and internal rotor (4), embedded with armature winding (5) in three-phase set, the stator tooth top surface (2-1) is arc surface, lays Halbach array permanent magnet (2-2) stator slot;Outer rotor (3) has outer rotor salient pole (3-1) close to stator side, close to internal rotor side insertion permanent magnet (3-2);Internal rotor (4) is 12 slot structure of quadrupole, armature winding (6) in insertion internal rotor three-phase set in internal rotor slot (4-1).It is an advantage of the invention that having 3 components, 2 layers of air gap, and torque output capability, torque density, housing construction, mechanical strength can be improved, be highly suitable for the application fields such as hybrid electric vehicle and other straight drive systems.

Description

A kind of birotor permanent magnetic vernier motor
Technical field
The invention belongs to field of hybrid electric vehicles, and in particular to a kind of birotor permanent magnetic vernier motor.
Background technique
In recent years, automobile rigid demand is kept vigorous, and car ownership is also in the trend of rapid growth, but automobile is giving people While class society brings great convenient, severe problem is also brought, two side of energy consumption and environmental pollution is mainly reflected in Face.To adapt to energy-saving and environment-friendly Green Development road, electric car is considered as one of most effective solution, but is limited by electricity Pool technology is difficult to be extended to market at present.Therefore, the hybrid electric vehicle that internal combustion engine and motor unit cooperation are power source is obtained Extensive concern.It uses advanced driving motor and driving control system to make two kinds of power source organic coordination cooperations, realizes most Canon's amount distribution, reaches low energy consumption, low pollution.
Chinese document CN106374701A disclosed a kind of magnetic field using Halbach permanent magnet array on 2 1st, 2017 Modulation type double-rotor machine.Inner stator, modulation rotor, center roller and external stator are followed successively by outer co-layer in the motor.It adjusts Rotor processed is connected with internal combustion engine output shaft, and center roller is connected with double-rotor machine output shaft, completes power assigning process.It should Deficiency existing for motor is: modulation rotor is to be arranged alternately to constitute by magnetic inductive block and non-magnetic piece, and use laminar, machine Tool intensity difference reduces the reliability of whole device;The inside and outside two sides permanent magnet of center roller uses surface-mount type structure, takes up space Volume is big, and be easy to cause permanent magnet to fall off because the centrifugal force of generation is larger in motor operating;Whole device is by 4 components 3 Layer air gap is constituted, and electric machine structure is complicated, and difficulty of processing is larger, and volume and quality are larger, reduces the practicability of motor.
Summary of the invention
In view of the problems of the existing technology, technical problem to be solved by the invention is to provide a kind of birotor permanent magnetics Vernier motor, it only has 3 components, 2 layers of air gap, and it is strong to improve torque output capability, torque density, housing construction, machinery Degree.
It is realized the technical problem to be solved by the present invention is to technical solution in this way, it includes motor casing, in electricity Casing internal, ecto-entad are successively laid with stator, outer rotor and internal rotor, and stator is 12 slot structure of quadrupole, and stator slot is embedding There is armature winding in stator three-phase set, stator crest top land is arc surface, lays Halbach array permanent magnet, and Halbach array is forever Magnet is seven pieces of permanent magnets, the magnetizing direction of adjacent permanent magnet is orthogonal;Outer rotor has 23 close to stator side Outer rotor salient pole is embedded in four pieces of permanent magnets close to internal rotor side;Internal rotor is 12 slot structure of quadrupole, is embedded in internal rotor slot Armature winding in internal rotor three-phase set.
" structural research of Halbach permanent-magnet servo motor and optimization design ", packet Xiping etc., small and special electric machine the 5th phase of volume 42, The 20-26 pages, describe Halbach array permanent magnet within 2014.The Halbach array permanent magnet and outer rotor salient pole structure of stator At motor outside permanent magnetism vernier;Outer rotor and internal rotor constitute motor in permanent magnetism.
Compared with the magnetic field modulation type double-rotor machine in background technique, the solution have the advantages that:
Halbach array permanent magnet is embedded on stator tooth by the present invention, modulates a series of skies using the salient-pole structure of outer rotor The space harmonics effect that m-Acetyl chlorophosphonazo and armature winding generate generates electromagnetic torque, modulation rotor has been eliminated, by motor component It reducing to 3, air gap is reduced to 2 layers, simplifies motor processing and assembling, the quality and volume of device are reduced, while It solves the problems, such as bad mechanical strength when the modulation rotor of laminar is individually placed, improves the reliability of whole device. Halbach array permanent magnet on stator of the present invention is by a kind of radial and combined novel magnetic knot of tangential array The magnetizing direction of structure, adjacent permanent magnet is orthogonal, and the interaction of parallel and tangential magnetic field can make the magnetic field-enhanced and another of one side The field weakening on one side improves permanent magnet utilization rate.The of the invention mode that magnetizes air gap flux density is improved and make stator teeth and The flux density in yoke portion weakens, while can also form the air-gap field for being bordering on Sine distribution, and then turns when motor operation is effectively reduced Square pulsation, improves the stationarity of motor operation.In addition, all permanent magnets of the present invention (including Halbach array permanent magnet, outer turn Permanent magnet of the son close to internal rotor side) it is damascene structures, compared with the surface-mount type used in background technique, by permanent magnet It is placed in inside iron core, shared spatial volume is small, can protect permanent magnet, also can avoid making permanent magnet fall off because centrifugal force is excessive; Meanwhile embedded structure can produce bigger reluctance torque, be conducive to improve torque output capability and overload energy of the invention Power.The internal rotor iron core that the present invention is located at innermost layer, which uses, to be located in the hidden pole type of innermost layer in salient-pole structure, with background technique Stator is compared, with structure and manufacturing process are simple, body is firm, fault-tolerant ability is strong, starting torque is big, speed adjustable range is wide and fortune The advantages that row revolving speed is high, suitable for different road conditions demands.
So it is an advantage of the invention that have 3 components, 2 layers of air gap, and can improve torque output capability, torque density, Housing construction, mechanical strength are highly suitable for the application fields such as hybrid electric vehicle and other straight drive systems.
Detailed description of the invention
Detailed description of the invention of the invention is as follows:
Fig. 1 is the driving system structure figure that the present invention is applied to hybrid electric vehicle;
Fig. 2 is sectional view of the invention;
Fig. 3 is the schematic diagram of the Halbach array permanent magnet of the present invention of stator insertion.
In figure: 1. motor casings;2. stator;2-1. stator tooth;2-2.Halbach array permanent magnet;3. outer rotor;3-1. outer Rotor with salient pole;3-2. permanent magnet;4. internal rotor;4-1. internal rotor slot;5. armature winding in stator three-phase set;6. internal rotor three Mutually concentrate armature winding;7. the outer motor of permanent magnetism vernier;8. motor in permanent magnetism;9. internal combustion engine;10. battery;11. main reducing gear; 12. electric brush slip ring;13.AC-DC rectifier;14.DC-AC inverter;15. outer motor gas-gap;Motor gas-gap in 16..
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
As depicted in figs. 1 and 2, the present invention includes motor casing 1, and inside motor casing 1, ecto-entad is successively laid with stator 2, outer Rotor 3 and internal rotor 4, stator are 12 slot structure of quadrupole, and stator slot is embedded with armature winding 5 in stator three-phase set, stator tooth 2-1 Top surface be arc surface, lay Halbach array permanent magnet 2-2, Halbach array permanent magnet be seven pieces of permanent magnets, it is adjacent forever The magnetizing direction of magnet is orthogonal;Outer rotor 3 has 23 outer rotor salient pole 3-1 close to stator side, close to internal rotor Side is embedded in four pieces of permanent magnet 3-2;Internal rotor 4 is 12 slot structure of quadrupole, is embedded in internal rotor three-phase set in internal rotor slot 4-1 Armature winding 6.
The Halbach array permanent magnet 2-2 and outer rotor salient pole 3-1 of stator constitute the outer motor 7 of permanent magnetism vernier;Outer rotor 3 Motor 8 in permanent magnetism is constituted with internal rotor 4.According to " variable reluctance controllable flux permanent magnet vernier motor Analysis of Electromagnetic Properties ", Zhong Xu etc., Motor control and application, 2018,45 (6), 62-67 describe the quantitative relation of permanent magnetism vernier motor each section number of pole-pairs.Cause This, armature winding number of pole-pairs, stator permanent magnet number of pole-pairs and outer rotor salient pole number, which meet condition, in stator three-phase set of the present invention is: Armature winding number of pole-pairs+permanent magnet pole logarithm (such as 23=2+6*7/2) in outer rotor salient pole number=stator three-phase set.
As shown in Figure 1, the present invention is applied in the drive system of hybrid electric vehicle: turning in the output shaft driving of internal combustion engine 9 Son 4, a part of mechanical output of internal combustion engine 9 is converted using electromagnetic energy is transferred directly to outer rotor 3 via interior motor gas-gap 16, Outer rotor 3 is connected with hybrid electric vehicle main reducing gear 11, and then directly drives hybrid electric vehicle;Remaining output power is by interior turn Armature winding 6 generates electromotive force in sub- three-phase set, is flowed into stator three-phase set in armature winding 5 by 12 structure of electric brush slip ring, Or flow into AC/DC inverse converter 13, it charges after being converted to direct current in 10 battery capacity deficiency of battery for it.
The electromagnetic torque that armature winding 5 generates in stator three-phase set is transferred to outer rotor 3 via outer motor gas-gap 15, and straight It connects and is transferred to the torque of outer rotor 3 and is stacked and adds as hybrid electric vehicle total output torque is provided.If not being able to satisfy vehicle demand still to turn Square, battery 10 start, and the electric energy of battery 10 is input in three-phase set in armature winding 5 and generates through DC-AC inverter 14 Electromagnetic torque passes to outer rotor 3, and outer rotor obtains increased torque, to improve driving force.
The working principle of the invention is:
Stator Halbach array permanent magnet 2-2 and outer rotor salient pole 3-1 of the invention constitutes the outer motor 7 of permanent magnetism vernier;Outer rotor 3 constitute motor 8 in permanent magnetism with internal rotor 4.The outer motor 7 of permanent magnetism vernier has torque regulatory function, by changing stator three-phase set The magnetic field size of middle armature winding compensates the torque differences of internal combustion engine and vehicle demand to change the size of the torque of transmitting.Permanent magnetism Interior motor 8 has rotational speed regulation effect, under the premise of guaranteeing that internal combustion engine 9 runs on high efficient area always, by changing stator Armature winding power frequency adjusts armature reacting field revolving speed to adjust 3 revolving speed of outer rotor in three-phase set, compensates internal combustion engine 9 and vehicle The rotational speed difference of demand, and transmit the torque of internal combustion engine 9.
The outer motor 7 of permanent magnetism vernier is modulated using the external air-gap field 15 of outer rotor salient pole 3-1, adjacent stators tooth 2-1 Between be embedded in Halbach array permanent magnet 2-2, and the magnetic conductivity of permanent magnet is close with air, equivalent stator 2 with modulate tooth knot It closes, stator tooth is differed away from the tooth pitch with outer rotor salient pole, and outer rotor 3 causes air-gap permeance generating period when rotating the position of very little Property variation, the magnetomotive force that air-gap permeance and Halbach array permanent magnet 2-2 are generated interacts, and it is humorous to modulate a series of spaces The space harmonics effect that wave and three-phase centralization stator armature winding 5 generate generates electromagnetic torque.In outer rotor motion process, electricity The stator tooth and outer rotor salient pole of machine are similar to the scale up and down of vernier caliper, i.e., " cursor effect ".The variation meeting of air-gap permeance Change armature winding inductance in stator three-phase set, brings biggish flux change.The electromagnetic torque of the outer motor 7 of permanent magnetism vernier is by two Part is constituted: (1) permanent-magnet torque that Halbach array permanent magnet 2-2 is generated with 5 function of current of armature winding in stator three-phase set Component;(2) the reluctance torque component that the variation of armature winding inductance generates in three-phase set;Therefore, the magnetic of outer rotor salient pole 3-1 is utilized Logical modulating action, is modulated armature winding magnetic field in the stator three-phase set of low number of pole-pairs, so that obtaining can be with high number of pole-pairs Halbach array magnetic field of permanent magnet matches coefficient harmonic field component, generates reluctance torque to increase permanent magnetism vernier Total output torque of outer motor 7.Stator tooth Distribution of Magnetic Field is as shown in Figure 3.
In the present invention, the internal rotor 4 with armature winding 6 in internal rotor three-phase set can be used as the stator of motor 8 in permanent magnetism, Internal rotor 4 uses salient-pole structure, with structure and manufacturing process are simple, body is firm, fault-tolerant ability is strong, starting torque is big, adjust The advantages that fast range is wide and running speed is high.Due to placing armature winding in 4 slot of internal rotor and being located at whole electric machine most Inside causes heat dissipation difficult, influences the working efficiency of motor.The present invention places concentratred winding in interior rotor slot, reduces electricity The copper loss of machine in the process of running, while the contact area of winding and air can also be increased, improve radiating efficiency.

Claims (1)

1. a kind of birotor permanent magnetic vernier motor, including motor casing (1), internal in motor casing (1), ecto-entad is successively laid with Stator (2), outer rotor (3) and internal rotor (4), stator are 12 slot structure of quadrupole, and stator slot is embedded with armature in stator three-phase set Winding (5), it is characterized in that: the stator tooth top surface (2-1) is arc surface, lays Halbach array permanent magnet (2-2), Halbach gusts Column permanent magnet is seven pieces of permanent magnets, the magnetizing direction of adjacent permanent magnet is orthogonal;Outer rotor (3) has two close to stator side 13 outer rotor salient poles (3-1) are embedded in four pieces of permanent magnets (3-2) close to internal rotor side;Internal rotor (4) is 12 slot of quadrupole Structure, internal rotor slot (4-1) is middle to be embedded in armature winding (6) in internal rotor three-phase set.
CN201811008183.6A 2018-08-31 2018-08-31 A kind of birotor permanent magnetic vernier motor Pending CN109104009A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811008183.6A CN109104009A (en) 2018-08-31 2018-08-31 A kind of birotor permanent magnetic vernier motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811008183.6A CN109104009A (en) 2018-08-31 2018-08-31 A kind of birotor permanent magnetic vernier motor

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110011502A (en) * 2019-03-29 2019-07-12 华中科技大学 A kind of two-shipper electricity port electric motor based on magnetic conductive iron unequally distributed blades
CN110048569A (en) * 2019-04-10 2019-07-23 蚁人(苏州)机械科技有限公司 The stator non iron-core servo motor of robot bilayer halbach array

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103066719A (en) * 2012-12-14 2013-04-24 江苏大学 Magnetic gathering type stator permanent magnetic type vernier motor
CN104377921A (en) * 2014-11-13 2015-02-25 西安交通大学 Permanent magnet reluctance type double-rotor motor
CN104917310A (en) * 2015-06-29 2015-09-16 中国船舶重工集团公司第七一二研究所 Low-speed reluctance motor and manufacturing method thereof
CN106341013A (en) * 2016-09-18 2017-01-18 重庆大学 Permanent magnet-magnetic resistance radial magnetic-flux compound double-rotor motor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103066719A (en) * 2012-12-14 2013-04-24 江苏大学 Magnetic gathering type stator permanent magnetic type vernier motor
CN104377921A (en) * 2014-11-13 2015-02-25 西安交通大学 Permanent magnet reluctance type double-rotor motor
CN104917310A (en) * 2015-06-29 2015-09-16 中国船舶重工集团公司第七一二研究所 Low-speed reluctance motor and manufacturing method thereof
CN106341013A (en) * 2016-09-18 2017-01-18 重庆大学 Permanent magnet-magnetic resistance radial magnetic-flux compound double-rotor motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110011502A (en) * 2019-03-29 2019-07-12 华中科技大学 A kind of two-shipper electricity port electric motor based on magnetic conductive iron unequally distributed blades
CN110048569A (en) * 2019-04-10 2019-07-23 蚁人(苏州)机械科技有限公司 The stator non iron-core servo motor of robot bilayer halbach array

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Application publication date: 20181228

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