WO2016108614A1 - Rotor de moteur électrique - Google Patents

Rotor de moteur électrique Download PDF

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Publication number
WO2016108614A1
WO2016108614A1 PCT/KR2015/014475 KR2015014475W WO2016108614A1 WO 2016108614 A1 WO2016108614 A1 WO 2016108614A1 KR 2015014475 W KR2015014475 W KR 2015014475W WO 2016108614 A1 WO2016108614 A1 WO 2016108614A1
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WO
WIPO (PCT)
Prior art keywords
flux barrier
rotor
width
flux
barrier
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Application number
PCT/KR2015/014475
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English (en)
Korean (ko)
Inventor
정영호
방량
서정호
차창환
Original Assignee
주식회사 효성
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 주식회사 효성 filed Critical 주식회사 효성
Publication of WO2016108614A1 publication Critical patent/WO2016108614A1/fr

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    • 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

Definitions

  • the present invention relates to a rotor of an electric motor, and more particularly, in a flux barrier group formed at each rotor core, the flux barrier includes a plurality of flux barriers formed in a radial direction of a rotation shaft, and among the plurality of flux barriers, adjacent to the shaft hole.
  • an electric motor includes a stator in which a coil that generates magnetism by electricity is wound, and a rotor that is rotated by mutual electromagnetic force with the stator.
  • the motor may be divided into a core type having a rotor and a stator inside and outside along a radial direction of the rotating shaft, and a coreless type having the rotor and stator arranged in the axial direction of the rotating shaft.
  • the synchronous reluctance motor is operated at a synchronous speed by the reluctance torque generated due to the difference Ld-Lq of the d-axis inductance Ld and the q-axis inductance Lq. It is a rotating synchronous motor.
  • Synchronous reluctance motors are cheaper and more reliable than other types of motors, have a long lifetime and have good electromagnetic properties, but have disadvantages in terms of noise and vibration.
  • FIG. 1 shows an axial sectional view of a conventional synchronous reluctance motor 1
  • FIG. 2 shows a perspective view of the rotor 2 of the synchronous reluctance motor 1 shown in FIG.
  • the conventional synchronous reluctance motor 1 is provided with a stator 3 connected to an external power source, and is rotatably provided inside the stator 3 to supply power to the stator 3.
  • a stator 3 connected to an external power source
  • stator 3 When applied, it consists of a rotor 2 or the like which is started by induced electromotive force and then rotated at a synchronous speed by a reluctance torque.
  • the rotor 2 is formed by stacking a plurality of rotor cores 6.
  • Each rotor core 6 is formed with a plurality of flux barrier groups 7 formed at predetermined intervals along the circumferential direction of the rotation axis.
  • the flux barrier group 7 has a flux barrier 8 formed along the radial direction of the rotation axis.
  • Each rotor core 6 has a shaft hole 5 formed at the center thereof, and a rotating shaft 4 is press-fitted into each shaft hole 5. More specifically, after insulation lamination of the plurality of rotor cores 6, the laminated rotor 2 is pressed into the rotating shaft 4 by means of shrinkage and assembled.
  • an object of the present invention is a plurality of rotor cores formed in each of the plurality of rotor cores are formed along the circumferential direction of the rotation axis in each rotor core is formed
  • Each flux bearer group has a flux barrier formed of a plurality of flux barriers in the radial direction of the rotation axis, and among the plurality of flux barriers formed in the one flux barrier group, By forming different widths of the flux barriers not adjacent to the shaft hole, the motive force that can reduce the stress and torque ripple applied to the rotor when the rotor is press-fitted into the rotating shaft and increase the efficiency of the motor It is to provide the rotor of the reluctance motor.
  • each of the flux barrier group includes a plurality of flux barriers formed along the radial direction of the rotation axis, the width of each of the flux barrier may be formed differently.
  • each of the rotor cores four flux barrier groups having four flux barriers are formed in each of the rotor cores, and the flux barrier group is closer to the shaft hole in each of the flux barrier groups.
  • the width of the first flux barrier and the width of the second flux barrier are formed to be the same, and the third flux barrier The width of and the width of the fourth flux barrier can be formed to be the same.
  • the width of the third flux barrier of each flux barrier group of the motor rotor may be formed smaller than the width of the first flux barrier.
  • the ratio of the width of the third flux barrier of each flux barrier group of the motor rotor to the width of the first flux barrier is preferably 0.8 or more and 0.9 or less.
  • the width of the first flux barrier of each flux barrier group of the motor rotor from the inner peripheral surface of the rotor core to the inner surface of the first flux flux barrier It is preferable that ratio of the space
  • a first bridge portion is formed on the first flux barrier of each flux barrier group of the motor rotor, and a second bridge portion is formed on the second flux barrier.
  • each of the rotor cores is close to the shaft hole in the flux barrier group.
  • the width of the first flux barrier, the width of the second flux barrier, and the third flux in the order of the first flux barrier, the second flux barrier, the third flux barrier, the fourth flux barrier, and the fifth flux barrier in this order.
  • the width of the flux barrier may be the same, and the width of the fourth flux barrier and the width of the fifth flux barrier may be the same.
  • the width of the fourth flux barrier of each flux barrier group of the motor rotor may be formed smaller than the width of the first flux barrier.
  • the ratio of the width of the fourth flux barrier of each flux barrier group of the motor rotor to the width of the first flux barrier is 0.8 or more and 0.9 or less. desirable.
  • the width of the first flux barrier of each flux barrier group of the motor rotor, the inner surface of the first zeflux barrier on the inner circumferential surface of the rotor core It is preferable that ratio of the space
  • a first bridge portion is formed on the first flux barrier of each flux barrier group of the motor rotor, and a second bridge portion is formed on the second flux barrier.
  • the third bridge may be formed on the third flux barrier.
  • the present invention includes a plurality of flux barrier groups formed on each rotor core along the circumferential direction of the rotation axis, and each flux bearer group includes a plurality of flux barriers formed in the radial direction of the rotation axis.
  • the invention has an effect that can reduce the torque ripple by reducing the stress generated in the rotor.
  • the present invention has the effect of increasing the efficiency of the motor by reducing the torque ripple on the rotor.
  • FIG. 1 shows an axial sectional view of a conventional synchronous reluctance motor.
  • FIG. 2 shows a perspective view of the rotor of the synchronous reluctance motor shown in FIG. 1.
  • FIG 3 shows an axial sectional view of a motor rotor according to a first embodiment of the present invention.
  • FIG. 4 is a detailed view of portion A of the motor rotor according to the second embodiment of the present invention in FIG.
  • FIG. 5 is an axial sectional view of a motor rotor according to a third embodiment of the present invention.
  • FIG. 6 is a detailed view of a portion B of the motor rotor according to the fourth embodiment of the present invention in FIG.
  • FIG. 3 shows an axial sectional view of the motor rotor according to the first embodiment of the present invention
  • FIG. 4 shows a detailed view of part A of the motor rotor according to the second embodiment of the present invention in FIG.
  • FIG. 5 shows an axial cross-sectional view of the motor rotor according to the third embodiment of the present invention
  • FIG. 6 shows a detailed view of part B of the motor rotor according to the fourth embodiment of the present invention in FIG.
  • the d-axis is a direction line that bisects the space between flux barrier groups among the direction lines extending radially from the center of the rotation axis
  • the q-axis is a center line that bisects the flux barriers. to be.
  • Inner circumferential surface means a circumferential surface adjacent to an axis of rotation.
  • Inner side means the side adjacent to the axis of rotation, ie the side adjacent to the shaft hole.
  • Outer side means the side opposite the axis of rotation with respect to the inner side, ie, the side not adjacent to the shaft hole.
  • the motor rotor 10 according to the present invention can be applied to a synchronous reluctance electrical motor.
  • the rotor 10 is formed by stacking a plurality of rotor cores 100. Although not shown in the drawings, the upper plate and the lower plate are fastened by bolts, rivets, and the like at both ends of the rotor 10 in which the plurality of rotor cores 100 are stacked.
  • Each rotor core 100 is formed with a shaft hole 110 through which a rotating shaft can be pressed in the center.
  • each rotor core 100 includes a plurality of flux barrier groups 200 formed at predetermined intervals along the circumferential direction of the rotation shaft.
  • Each flux barrier group 200 has a plurality of flux barriers formed along the radial direction of the rotation axis.
  • each flux barrier is formed differently.
  • the flux barrier adjacent to the shaft hole 110 has the largest width and is located farthest from the shaft hole 110 in order to reduce the stress generated in the rotor during indentation to the rotating shaft.
  • the width of the flux barrier is formed to be the smallest. That is, the width of the flux barrier is sequentially reduced in the order of the flux barrier that is furthest from the flux barrier closest to the shaft barrier 110 in the shaft hole 110.
  • each rotor core 100 of the motor rotor 10 according to the second embodiment of the present invention has four flux barriers 210, 220, 230, and 240.
  • Four flux barrier groups 200 are formed.
  • each flux barrier group 200 the first flux barrier 210, the second flux barrier 220, the third flux barrier 230, and the fourth flux barrier 240 may be disposed in a close order to the shaft hole 110. Refer to.
  • the first, second, third, and fourth flux barriers 210, 220, 230, and 240 each have a straight portion formed in a straight line across the radial direction of the rotating shaft and a curved portion formed at a predetermined angle at both ends of the straight portion. .
  • the straight portion is formed perpendicular to the q axis, and the curved portion is formed to be bent at a predetermined angle with respect to the q axis.
  • the first flux barrier 210 in each flux barrier group 200 formed in each rotor core 100 of the motor rotor 10 according to the second embodiment of the present invention As shown in FIG. 4, the first flux barrier 210 in each flux barrier group 200 formed in each rotor core 100 of the motor rotor 10 according to the second embodiment of the present invention.
  • the rotor 10 press-fitted to the rotating shaft by shrinkage has a smaller width L1, L2, L3. L4 of the flux barriers 210, 220, 230, and 240 in order to make the magnetic flux density uniform,
  • the interval (W) from the inner circumferential surface 101 of the rotor core 110 to the inner surface 212 of the first zeflux barrier 210 is preferably formed thick to support the centrifugal force and distribute the load due to stress concentration. Do.
  • the ratio L3 / L1 of the width L3 of the third flux barrier 230 to the width L1 of the first flux barrier 210 is preferably 0.8 or more and 0.9 or less.
  • 1 flux barrier 210 is formed to be 80% to 90% of the width (L1).
  • the inner surface of the first flux barrier 210 may be smaller than 0.8.
  • the local stress concentration and torque ripple may be increased, and the ratio L3 / L1 of the width L3 of the third flux barrier 230 to the width L1 of the first flux barrier 210 is 0.9. If it exceeds, as the overall area occupied by the first, second, third, and fourth flux barriers in the rotor core increases, the rigidity of the rotor core may decrease, thereby increasing torque ripple.
  • the first flux barrier 210 is increased to increase the motor efficiency.
  • the width L3 of the third flux barrier 230 is formed to be 80% to 90% of the width L1 of the first flux barrier 210.
  • the ratio L1 / W of the width L1 of the first flux barrier 230 to the inner surface 212 of the first zeflux barrier 210 from the inner circumferential surface 101 of the rotor core When K W ) is less than 0.8, the stress concentration and torque ripple local to the inner surface of the first flux barrier 210 may be increased rather than the width L1 of the first flux barrier 210 versus the rotor.
  • the ratio L3 / L1 of the width L3 of the third flux barrier 230 to the width L1 of the first flux barrier 210 is formed to be 0.8 or more and 0.9 or less, and the first flux barrier ( The ratio L1 / W of the width L1 of the width L1 of the rotor core to the inner side surface 212 of the first zeflulux barrier 210 of the rotor core 101 is 0.8 or more and 0.9 or less.
  • the first bridge portion 211 is formed in the first flux barrier 210, and the second bridge portion 221 is the second flux barrier 220. Is formed.
  • the first bridge portion 211 may be disposed between the inner and outer surfaces of the first flux barrier 210 to have the same length as the width L1 of the first flux barrier 210 along the q-axis. Is formed extending to.
  • the second bridge portion 212 extends between the inner surface and the outer surface of the second flux barrier 220 so as to have the same length as the width L2 of the second flux barrier 220 along the q axis. .
  • First and second bridge portions 211 and 221 are formed on the first and second flux barriers 210 and 220, and the first and second bridge portions 211, 221 and 231 are formed when the rotor is snapped to the rotating shaft. Torque ripple is reduced by dispersing stress.
  • the motor rotor 10 according to the present invention can be applied to a synchronous reluctance electrical motor.
  • the rotor 10 is formed by stacking a plurality of rotor cores 100. Although not shown in the drawings, the upper plate and the lower plate are fastened by bolts, rivets, and the like at both ends of the rotor 10 in which the plurality of rotor cores 100 are stacked.
  • Each rotor core 100 is formed with a shaft hole 110 through which a rotating shaft can be pressed in the center.
  • each rotor core 100 includes a plurality of flux barrier groups 200 formed at predetermined intervals along the circumferential direction of the rotation shaft.
  • Each flux barrier group 200 has a plurality of flux barriers formed along the radial direction of the rotation axis.
  • each flux barrier is formed differently.
  • the flux barrier adjacent to the shaft hole 110 has the largest width and is located farthest from the shaft hole 110 in order to reduce the stress generated in the rotor during indentation to the rotating shaft.
  • the width of the flux barrier is formed to be the smallest. That is, the width of the flux barrier is sequentially reduced in the order of the flux barrier that is furthest from the flux barrier closest to the shaft barrier 110 in the shaft hole 110.
  • each of the rotor cores 100 of the motor rotor 10 according to the fourth embodiment of the present invention has five flux barriers 210, 220, 230, 240 and 250.
  • Four flux barrier groups 200 are formed.
  • each flux barrier group 200 the first flux barrier 210, the second flux barrier 220, the third flux barrier 230, the fourth flux barrier 240, And fifth flux barrier 250.
  • the motor rotor 10 according to the fourth embodiment of the present invention further includes a fifth flux barrier 250, and includes first, second, third, fourth, and fifth flux barriers 210, 220, 230, 240,
  • the configuration of 250 is the same and will be described below with emphasis on differences from the second embodiment of the present invention.
  • the ratio L4 / L1 of the width L4 of the fourth flux barrier 240 to the width L1 of the first flux barrier 210 is preferably 0.8 or more and 0.9 or less.
  • the width L4 of the fourth flux barrier 240 and the width L5 of the fifth flux barrier 250 are the same, and the width L3 of the fifth flux barrier 230 is the first flux barrier 210. It is formed to be 80% to 90% of the width (L1) of.
  • the inner surface of the first flux barrier 210 may be smaller than 0.8.
  • the local stress concentration and torque ripple can be rather increased, and the ratio L4 / L1 of the width L4 of the fourth flux barrier 240 to the width L1 of the first flux barrier 210 is 0.9. If it exceeds, as the total area occupied by the first, second, third, fourth, and fifth flux barriers in the rotor core increases, the rigidity of the rotor core may decrease, thereby increasing torque ripple.
  • the width L4 of the fifth flux barrier 240 is formed to be 80% to 90% of the width L1 of the first flux barrier 210.
  • the ratio L1 / W of the width L1 of the first flux barrier 230 to the inner surface 212 of the first zeflux barrier 210 from the inner circumferential surface 101 of the rotor core When K W ) is less than 0.8, the stress concentration and torque ripple local to the inner surface of the first flux barrier 210 may be increased rather than the width L1 of the first flux barrier 210 versus the rotor.
  • the ratio L4 / L1 of the width L4 of the fourth flux barrier 240 to the width L1 of the first flux barrier 210 is formed to be 0.8 or more and 0.9 or less, and the first flux barrier ( The ratio L1 / W of the width L1 of the width L1 of the rotor core to the inner side surface 212 of the first zeflulux barrier 210 of the rotor core 101 is 0.8 or more and 0.9 or less.
  • the first bridge portion 211 is formed in the first flux barrier 210, and the second bridge portion 221 is the second flux barrier 220.
  • a third bridge portion 231 is formed on the third flux barrier 230.
  • the first bridge portion 211 may be disposed between the inner and outer surfaces of the first flux barrier 210 to have the same length as the width L1 of the first flux barrier 210 along the q-axis. Is formed extending to.
  • the second bridge portion 212 extends between the inner surface and the outer surface of the second flux barrier 220 so as to have the same length as the width L2 of the second flux barrier 220 along the q axis.
  • the third bridge portion 213 extends between the inner surface and the outer surface of the third flux barrier 230 to have the same length as the width L3 of the third flux barrier 230 along the q-axis.
  • First, second, and third bridge portions 211, 221, and 231 are formed in the first, second, and third flux barriers 210, 220, and 230, and the first, second, and third portions are formed when the rotor is pinched on the rotation shaft. Torque ripple is reduced by dispersing stress in the bridge portions 211, 221, 231.
  • 200 flux barrier group
  • 210 first flux barrier
  • L1 width of the first flux barrier
  • L2 width of the second flux barrier
  • L3 is the width of the third flux barrier
  • L4 is the width of the fourth flux barrier
  • L5 is the width of the fifth flux barrier
  • W distance from the inner circumferential surface of the rotor core to the inner surface of the first flux barrier.
  • the present invention relates to a rotor of an electric motor, and can be used in the electric motor field.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Synchronous Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

La présente invention concerne un rotor formé par l'empilement d'une pluralité de couronnes rotor comprenant chacune un trou d'arbre, et un rotor d'un moteur électrique à réluctance synchrone dans lequel chaque couronne rotor comprend une pluralité de groupes de barrières de flux formée le long de la direction circonférentielle d'un arbre rotatif. Chaque groupe de barrières de flux comprend une pluralité de barrières de flux formée dans la direction radiale de l'arbre rotatif. Les largeurs des barrières de flux adjacentes au trou d'arbre sont formées de sorte à être différentes des largeurs des barrières de flux qui ne sont pas adjacentes au trou d'arbre, parmi la pluralité de barrières de flux formée dans un groupe de barrières de flux. Cela permet d'améliorer l'efficacité du moteur électrique et de réduire la contrainte et l'ondulation de couple qui sont appliquées sur le rotor lorsque le rotor est emmanché à la presse sur l'arbre rotatif par calage à retrait.
PCT/KR2015/014475 2014-12-31 2015-12-30 Rotor de moteur électrique WO2016108614A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2014-0195417 2014-12-31
KR1020140195417A KR101660893B1 (ko) 2014-12-31 2014-12-31 전동기의 회전자

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WO2016108614A1 true WO2016108614A1 (fr) 2016-07-07

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WO (1) WO2016108614A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110535264A (zh) * 2019-09-27 2019-12-03 深圳市百盛传动有限公司 同步磁阻电机转子冲片

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102397230B1 (ko) * 2020-04-27 2022-05-12 현대일렉트릭앤에너지시스템(주) 동기 릴럭턴스 전동기의 회전자 및 전동기의 회전자 설계 방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1014185A (ja) * 1996-06-18 1998-01-16 Okuma Mach Works Ltd 同期電動機
KR20040032646A (ko) * 2002-10-10 2004-04-17 엘지전자 주식회사 동기 릴럭턴스 모터
KR20100080653A (ko) * 2009-01-02 2010-07-12 한밭대학교 산학협력단 집중권선 동기 릴럭턴스 전동기의 토크 리플 저감에 관한 회전자 및 고정자 설계방법 및 그 설계방법에 의하여 설계 제작된 집중권선 동기 릴럭턴스 전동기의 회전자 및 고정자
KR101251859B1 (ko) * 2012-03-29 2013-04-10 한밭대학교 산학협력단 영구자석 매입형 동기 릴럭턴스 전동기의 설계 방법
KR20130080635A (ko) * 2012-01-05 2013-07-15 한밭대학교 산학협력단 토크 리플 저감을 위한 동기형 릴럭턴스 전동기

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100709296B1 (ko) 2005-11-04 2007-04-19 창원대학교 산학협력단 역률과 토크가 향상된 회전자 설계 방법 및 회전자구조

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1014185A (ja) * 1996-06-18 1998-01-16 Okuma Mach Works Ltd 同期電動機
KR20040032646A (ko) * 2002-10-10 2004-04-17 엘지전자 주식회사 동기 릴럭턴스 모터
KR20100080653A (ko) * 2009-01-02 2010-07-12 한밭대학교 산학협력단 집중권선 동기 릴럭턴스 전동기의 토크 리플 저감에 관한 회전자 및 고정자 설계방법 및 그 설계방법에 의하여 설계 제작된 집중권선 동기 릴럭턴스 전동기의 회전자 및 고정자
KR20130080635A (ko) * 2012-01-05 2013-07-15 한밭대학교 산학협력단 토크 리플 저감을 위한 동기형 릴럭턴스 전동기
KR101251859B1 (ko) * 2012-03-29 2013-04-10 한밭대학교 산학협력단 영구자석 매입형 동기 릴럭턴스 전동기의 설계 방법

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110535264A (zh) * 2019-09-27 2019-12-03 深圳市百盛传动有限公司 同步磁阻电机转子冲片

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KR101660893B1 (ko) 2016-09-28
KR20160081491A (ko) 2016-07-08

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