WO2019244240A1 - Rotor et machine électrique tournante - Google Patents

Rotor et machine électrique tournante Download PDF

Info

Publication number
WO2019244240A1
WO2019244240A1 PCT/JP2018/023276 JP2018023276W WO2019244240A1 WO 2019244240 A1 WO2019244240 A1 WO 2019244240A1 JP 2018023276 W JP2018023276 W JP 2018023276W WO 2019244240 A1 WO2019244240 A1 WO 2019244240A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
slot
conductor
vertex
peripheral surface
Prior art date
Application number
PCT/JP2018/023276
Other languages
English (en)
Japanese (ja)
Inventor
佳樹 岡田
米谷　晴之
盛幸 枦山
貴裕 水田
仁明 大熊
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2018/023276 priority Critical patent/WO2019244240A1/fr
Priority to CN201880094619.XA priority patent/CN112352372A/zh
Priority to JP2020525116A priority patent/JPWO2019244240A1/ja
Publication of WO2019244240A1 publication Critical patent/WO2019244240A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
    • H02K17/18—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors having double-cage or multiple-cage rotors

Definitions

  • the present invention relates to a rotor that is a double-cage rotor and a rotating electric machine having the rotor.
  • a double-cage rotor is widely used in order to increase a starting torque generated by the rotary electric machine at the time of starting.
  • the cage rotor has a rotor conductor, which is a conductor housed in a rotor slot of a rotor core, and two short-circuit rings connected to the rotor conductor.
  • the double-cage rotor has a rotor slot provided with an inner slot located on the center side of the rotor core and an outer slot located on the outer peripheral surface side of the rotor core.
  • the starting torque is increased by concentrating the current flowing through the rotor during startup into the outer slots and increasing the resistance of the current flowing through the rotor.
  • Electric energy loss in a rotating electric machine includes primary copper loss, which is a loss caused by a resistance component of a winding provided in a stator, secondary copper loss, which is a loss caused by a resistance component of a rotor conductor, and a stator.
  • primary copper loss which is a loss caused by a resistance component of a winding provided in a stator
  • secondary copper loss which is a loss caused by a resistance component of a rotor conductor
  • stator There is iron loss, which is a loss caused by magnetic flux interlinking between the iron core and the rotor iron core.
  • a so-called harmonic secondary copper loss which is a loss caused by a harmonic magnetic flux resulting from a stator slot linked to a rotor conductor, is also considered as one of the electric energy losses in the rotating electric machine.
  • the harmonic magnetic flux is generated when a current of a harmonic component, which is a component of a frequency higher than the driving frequency of the rotor, flows through the rotor core.
  • Patent Literature 1 discloses that, in order to reduce harmonic secondary copper loss in a double-cage rotor, the outer side of an outer slot in a cross section perpendicular to the rotation axis of a rotor core has a center side of the rotor core. It is disclosed to include an arcuate curved portion that is convex. The curved portion is provided between a vertex located on the outer peripheral surface side of the rotor core and a shoulder which is a portion protruding in the width direction of the outer slot. According to the technique of Patent Document 1, the curved portion is provided, thereby increasing the inductance due to the current of the harmonic component flowing through the rotor conductor, and selectively reducing the high-frequency current that causes harmonic secondary copper loss. Make it possible.
  • Patent Document 1 As the magnetic resistance in the outer slot decreases, the current of the fundamental wave component concentrates on the outer slot, while the current of the fundamental wave component flowing to the inner slot decreases, so that the amount of magnetic flux contributing to the generation of torque decreases. Therefore, the technique of Patent Document 1 described above has a problem in that the driving efficiency of the rotating electrical machine is reduced due to an increase in secondary copper loss and a decrease in the amount of magnetic flux contributing to the generation of torque.
  • the present invention has been made in view of the above, and has as its object to obtain a rotor that can improve the driving efficiency of a rotating electric machine.
  • a rotor according to the present invention has a rotor core in which a rotor slot for accommodating a conductor is formed.
  • the rotor slot has a first slot and a second slot that is located closer to the outer peripheral surface of the rotor core than the first slot and is connected to the first slot.
  • the outer shape of the second slot in a cross section perpendicular to the central axis that is the rotation center of the rotor includes a plurality of vertices that are positions where ridges forming the outer shape are bent.
  • the plurality of vertices includes a first vertex which is a vertex closest to the outer peripheral surface among the plurality of vertices, a second vertex which is a vertex next to the first vertex and which is closer to the outer peripheral surface, including.
  • the distance between the second apex and the outer peripheral surface is larger than the skin depth of a harmonic component that is a component of a higher frequency than the driving frequency of the rotor in the current flowing through the conductor.
  • the rotor according to the present invention has an effect that the driving efficiency of the rotating electric machine can be improved.
  • FIG. 4 is a diagram showing a main part of a rotating electric machine according to a second embodiment of the present invention.
  • FIG. 9 is a diagram illustrating a main part of a rotating electric machine according to a third embodiment of the present invention
  • FIG. 1 is a sectional view of the rotating electric machine 100 according to the first embodiment of the present invention.
  • the rotating electric machine 100 is a three-phase induction motor having a double-cage rotor.
  • the rotating electric machine 100 includes a cylindrical stator 10, a rotor 20 that is driven to rotate by being surrounded by the stator 10, and a shaft 30 provided at the center of the rotor 20.
  • the rotor 20 is a double-cage rotor.
  • FIG. 1 shows a cross section orthogonal to a center axis AX which is a rotation center of the rotor 20. In FIG. 1, hatching indicating a cross section is omitted.
  • the direction in which the central axis AX extends may be referred to as an axial direction, and the direction along a circle around the central axis AX may be referred to as a circumferential direction.
  • the stator 10 has a stator core 11 in which a plurality of stator slots 12 for accommodating windings are formed.
  • the stator core 11 is formed by stacking a plurality of magnetic steel silicon steel plates in the axial direction.
  • the stator core 11 has a back yoke 15 and a plurality of stator teeth 14 protruding from the back yoke 15 toward the rotor 20.
  • the stator teeth 14 are arranged at intervals in the circumferential direction.
  • Stator slots 12 are provided between stator teeth 14.
  • the stator slot 12 is a space where the rotor 20 side is open.
  • a stator coil 13 formed by winding a winding is disposed in the stator slot 12.
  • a 50 Hz or 60 Hz system power supply is directly connected to the stator coil 13.
  • the rotor 20 has a rotor core 21 in which a plurality of rotor slots 22 for accommodating a rotor conductor 23 are formed.
  • the rotor core 21 is formed by stacking a plurality of silicon steel plates, which are magnetic materials, in the axial direction.
  • a gap is provided between the outer peripheral surface 25 and the stator 10.
  • the outer peripheral surface 25 is a surface of the rotor core 21 in a direction away from the central axis AX.
  • a plurality of rotor teeth 24 are provided in a portion of the rotor core 21 on the outer peripheral surface 25 side.
  • the rotor teeth 24 are arranged at intervals in the circumferential direction.
  • a rotor slot 22 is provided between each rotor tooth 24.
  • the rotor slot 22 is a closed space in the plane shown in FIG.
  • the rotor conductor 23 is a conductor arranged in each rotor slot 22.
  • a non-magnetic metal material such as aluminum or an aluminum alloy is used.
  • FIG. 2 is a side view of the rotating electric machine 100 shown in FIG.
  • the rotating electric machine 100 includes two short-circuit rings 40 provided along the circumferential direction.
  • One short-circuit ring 40 is connected to the rotor conductor 23 at one end of the rotor core 21 in the axial direction.
  • Another short-circuit ring 40 is connected to the rotor conductor 23 at the other axial end of the rotor core 21.
  • FIG. 3 is a view showing a portion of the rotor core 21 of the rotating electric machine 100 shown in FIG. 1 in which one rotor slot 22 is provided.
  • the rotor slot 22 includes an inner slot 26 as a first slot, an outer slot 27 as a second slot connected to the first slot, and a slit 28 connecting the inner slot 26 and the outer slot 27.
  • the inner slot 26 is a portion of the rotor slot 22 located on the center axis AX side.
  • the outer shape of the inner slot 26 is an isosceles triangle deformed so that the apex angle becomes an arc shape.
  • the width of the inner slot 26 in the circumferential direction is narrowed toward the central axis AX.
  • the outer shape of the inner slot 26 is not limited to the modified triangle shown in FIG. 3, but may be a polygon or a polygon modified so as to have rounded corners.
  • the outer slot 27 is located closer to the outer peripheral surface 25 than the inner slot 26 is.
  • the outer shape of the outer slot 27 includes a plurality of vertices, which are positions where ridges forming the outer shape are bent.
  • the outer shape of the outer slot 27 shown in FIG. 3 is a pentagon having five vertices 27a, 27b, 27c, 27d, and 27e.
  • the position of the apex 27 a is the position closest to the outer peripheral surface 25 in the outer slot 27.
  • the vertex 27a which is the first vertex, is the vertex located closest to the outer peripheral surface 25 among the five vertices 27a, 27b, 27c, 27d, and 27e.
  • the vertex 27b which is the second vertex, is a vertex located at a position near the outer peripheral surface 25 next to the vertex 27a.
  • the three vertices 27c, 27d, and 27e are vertices located closer to the center axis AX than the vertex 27b.
  • the slit 28 is provided between one side of the pentagon, which is the outer shape of the outer slot 27, on the center axis AX side and the base of the deformed isosceles triangle, which is the outer shape of the inner slot 26.
  • the width of the slit 28 in the circumferential direction is smaller than the width of the inner slot 26 in the circumferential direction, and smaller than the width of the outer slot 27 in the circumferential direction.
  • the current of the higher harmonic component that is a frequency component higher than the drive frequency of the rotor 20 flows.
  • the high frequency component is a component that does not contribute to driving the rotor 20.
  • the high frequency component is generated due to the number of stator slots 12 formed in the stator core 11 and the stator coil 13.
  • the harmonic magnetic flux generated by the flow of the current of the harmonic component is linked to the rotor conductor 23, so that a harmonic secondary copper loss occurs.
  • the number of the stator slots 12 is N s , the angular frequency of the alternating current driving the rotor 20 is ⁇ , the resistivity of the rotor conductor 23 is ⁇ , the magnetic permeability of the rotor conductor 23 is ⁇ , and the number of pole pairs of the rotating electric machine 100 is Is P, ds, which is the skin depth of the harmonic component of the current flowing through the rotor conductor 23, is expressed by the following equation (1).
  • Hs which is the distance between the vertex 27b and the outer peripheral surface 25, is larger than ds, which is the skin depth of the harmonic component. That is, the relationship of ds ⁇ Hs holds.
  • the skin depth is a distance between a position where the current density is 1 / e of the current density on the surface of the conductive material and the surface when the current flows through the conductive material. "E” is the base of the natural logarithm.
  • the skin depth is an index of a skin effect in which a current is brought to the surface of the conductive material as the frequency increases.
  • FIG. 4 is a view showing a first modification of the outer slot 27 of the rotor slot 22 shown in FIG.
  • the distance between the outer peripheral surface 25 and the vertex 27b is the same as the distance between the outer peripheral surface 25 and the vertex 27c.
  • the vertices 27b and 27c are the second vertices located at a position near the outer peripheral surface 25 next to the vertex 27a.
  • FIG. 5 is a view showing a second modification of the outer slot 27 of the rotor slot 22 shown in FIG.
  • the outer shape of the outer slot 27 is a triangle in which three corners are each rounded.
  • the vertex 27a which is the first vertex, is the vertex located closest to the outer peripheral surface 25 among the three vertices 27a, 27b, and 27c.
  • the vertices 27b and 27c which are the second vertices, are vertices located near the outer peripheral surface 25 next to the vertex 27a.
  • the vertices 27a, 27b, and 27c may be rounded portions.
  • the outer shape of the outer slot 27 may be a polygon or a polygon modified so as to have rounded corners.
  • FIG. 6 is a diagram illustrating the flow of magnetic flux from stator core 11 to rotor core 21 in rotating electric machine 100 shown in FIG. 1.
  • the magnetic flux 29 shown in FIG. 6 is a harmonic magnetic flux caused by the stator slot 12.
  • the magnetic flux 29 flowing from the stator 10 to the rotor 20 flows from the stator teeth 14 to the rotor core 21 through the gap between the stator 10 and the rotor 20.
  • the magnetic flux 29 flows in the circumferential direction from the vicinity of a position advanced from the outer peripheral surface 25 by the above-described skin depth, and reaches the rotor teeth 24.
  • Hs which is the distance between the second vertex and the outer peripheral surface 25
  • ds which is the skin depth
  • the magnetic flux 29 flowing from the stator teeth 14 to the rotor teeth 24 becomes the first vertex and the second , Once entering the outer slot 27 from between the top of the rotor, and then proceed to the rotor teeth 24.
  • the magnetic flux 29 flowing from the stator teeth 14 to the rotor teeth 24 flows across the outer slots 27, whereby the magnetic flux 29 links with the rotor conductor 23.
  • An eddy current is generated in the rotor conductor 23 to cancel the magnetic flux 29 entering the outer slot 27.
  • a harmonic secondary copper loss occurs. As the harmonic secondary copper loss increases, the driving efficiency of the rotating electric machine 100 decreases.
  • Hs which is the distance between the second vertex and the outer peripheral surface 25
  • ds which is the skin depth
  • the vertex 27a is included in the range from the outer peripheral surface 25 to the skin depth.
  • the distance between the outer peripheral surface 25 and the first vertex is smaller than the skin depth, but is not limited to this.
  • the fundamental magnetic flux for driving the rotor 20 flows near the outer peripheral surface 25 of the rotor core 21 to reduce the torque. May lead to a decrease. Therefore, it is desirable that the distance between the outer peripheral surface 25 and the first vertex is smaller than the skin depth.
  • rotating electric machine 100 can reduce harmonic secondary copper loss. .
  • the rotating electric machine 100 can improve the driving efficiency by reducing the harmonic secondary copper loss.
  • the rotor 20 has an effect that the driving efficiency of the rotating electric machine 100 can be improved.
  • FIG. 7 is a diagram illustrating a main part of the rotating electric machine 100 according to the second embodiment of the present invention.
  • the inner conductor 26 accommodates the rotor conductor 23 and the rotor conductor 50.
  • FIG. 7 shows a portion where one rotor slot 22 is provided in the rotor core 21 of the rotary electric machine 100.
  • the same components as those in the first embodiment are denoted by the same reference numerals, and the configuration different from the first embodiment will be mainly described.
  • the rotor conductor 50 as the second conductor has a higher conductivity than the rotor conductor 23. Copper or a copper-based alloy is used as a material of the rotor conductor 50.
  • the rotor conductor 50 is surrounded by the rotor conductor 23.
  • the rotor conductor 50 is disposed in the inner slot 26 at a portion on the side of the central axis AX.
  • the outer shape of the rotor conductor 50 has a rectangular shape.
  • the outer shape of the rotor conductor 50 in the cross section shown in FIG. 7 may be other than a rectangle.
  • the rotor slot is smaller than the case where the conductor accommodated in the inner slot 26 is only the rotor conductor 23.
  • the resistance of the current flowing through 22 decreases. Thereby, the secondary copper loss caused by the resistance components of rotor conductors 23 and 50 is reduced.
  • rotor 20 can improve the driving efficiency of rotating electric machine 100 as in the first embodiment, and can reduce the secondary copper loss by the arrangement of rotor conductor 50.
  • the rotor 20 can further improve the driving efficiency of the rotating electric machine 100 by reducing the secondary copper loss.
  • FIG. 8 is a diagram illustrating a main part of the rotating electric machine 100 according to the third embodiment of the present invention.
  • the distance between rotor conductor 50, which is the second conductor, and outer peripheral surface 25 is larger than the skin depth of the fundamental wave component, which is an alternating current that drives rotor 20.
  • FIG. 8 shows a portion of the rotor core 21 of the rotating electric machine 100 in which one rotor slot 22 is provided.
  • the same components as those in the first and second embodiments are denoted by the same reference numerals, and a configuration different from the first and second embodiments will be mainly described.
  • the skin depth df of the fundamental wave component is expressed by the following equation. It is represented by (2).
  • the rotor slot 22 since the distance Hc between the position 50a and the outer peripheral surface 25 is larger than the skin depth df, the rotor slot 22 has a portion closer to the outer peripheral surface 25 than df due to the skin effect.
  • the current flows only through the rotor conductor 23 which is Since the current at the time of starting flows only through the rotor conductor 23 of the rotor slot 22, the resistance of the current flowing through the rotor slot 22 becomes larger than when the current flows through the rotor conductor 50. Thereby, the rotating electrical machine 100 can suppress a decrease in the starting torque.
  • the rotor 20 can improve the driving efficiency of the rotating electric machine 100 as in the second embodiment, and suppress the decrease in the starting torque.
  • the rotor 20 can further improve the driving efficiency of the rotating electric machine 100 by suppressing a decrease in the starting torque.
  • stator 11 stator core, 12 stator slot, 13 stator coil, 14 stator teeth, 15 back yoke, 20 rotor, 21 rotor core, 22 rotor slot, 23,50 rotor conductor, 24 Rotor teeth, 25 ° outer peripheral surface, 26 ° inner slot, 27 ° outer slot, 27a, 27b, 27c, 27d, 27e vertex, 28 ° slit, 29 ° magnetic flux, 30 ° shaft, 40 ° short circuit ring, 50a position, 100 ° rotating electric machine.

Landscapes

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

Abstract

La présente invention concerne un rotor pourvu d'un noyau de rotor (21) dans lequel une fente de rotor (22) est formée, dans laquelle est placé un conducteur de rotor (23). La fente de rotor (22) comporte : une fente interne (26) en tant que première fente ; et une fente externe (27) en tant que seconde fente qui est située plus près de la surface périphérique externe (25) du noyau de rotor (21) que la première fente et est reliée à la première fente. Dans une section transversale perpendiculaire à un axe central qui est le centre de rotation du rotor, la forme externe de la seconde fente comprend une pluralité de sommets formés par des lignes de crête courbées qui constituent la forme externe. La pluralité de sommets comprend : un sommet (27a) en tant que premier sommet, qui est le plus proche de la surface périphérique externe parmi la pluralité de sommets ; et un sommet (27b) en tant que second sommet, qui est le second le plus proche de la surface périphérique externe (25) après le premier sommet. L'intervalle entre le second sommet et la surface périphérique externe (25) est supérieur à la profondeur de pénétration d'une composante harmonique qui est une composante d'une fréquence supérieure à une fréquence de commande du rotor dans un courant circulant à travers le conducteur de rotor (23).
PCT/JP2018/023276 2018-06-19 2018-06-19 Rotor et machine électrique tournante WO2019244240A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2018/023276 WO2019244240A1 (fr) 2018-06-19 2018-06-19 Rotor et machine électrique tournante
CN201880094619.XA CN112352372A (zh) 2018-06-19 2018-06-19 转子及旋转电机
JP2020525116A JPWO2019244240A1 (ja) 2018-06-19 2018-06-19 回転子および回転電機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/023276 WO2019244240A1 (fr) 2018-06-19 2018-06-19 Rotor et machine électrique tournante

Publications (1)

Publication Number Publication Date
WO2019244240A1 true WO2019244240A1 (fr) 2019-12-26

Family

ID=68983323

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/023276 WO2019244240A1 (fr) 2018-06-19 2018-06-19 Rotor et machine électrique tournante

Country Status (3)

Country Link
JP (1) JPWO2019244240A1 (fr)
CN (1) CN112352372A (fr)
WO (1) WO2019244240A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021256125A1 (fr) * 2020-06-18 2021-12-23 株式会社 東芝 Machine électrique rotative
WO2022064820A1 (fr) * 2020-09-25 2022-03-31 株式会社日立産機システム Rotor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6246141B1 (en) * 1999-04-23 2001-06-12 Hamilton Sundstrand Corporation High torque reduced starting current electric motor
WO2013150645A1 (fr) * 2012-04-06 2013-10-10 三菱電機株式会社 Rotor à double cage
WO2015001601A1 (fr) * 2013-07-01 2015-01-08 株式会社日立産機システム Machine électrique tournante et son procédé de fabrication
US20180123432A1 (en) * 2015-04-14 2018-05-03 Siemens Aktiengesellschaft Rotor of an asynchronous machine

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3401280A (en) * 1966-03-01 1968-09-10 Gen Electric Fabricated squirrel cage rotor construction for electric motor and method of assembling the same
JPS579236A (en) * 1980-06-18 1982-01-18 Toshiba Corp Cast rotor
JPH08168219A (ja) * 1994-12-13 1996-06-25 Toshiba Corp 誘導電動機のかご形回転子
JPH1028360A (ja) * 1996-07-11 1998-01-27 Hitachi Ltd 誘導電動機およびその回転子
JP5019451B2 (ja) * 2007-11-15 2012-09-05 東芝産業機器製造株式会社 回転子
KR101102146B1 (ko) * 2007-12-27 2012-01-02 미쓰비시덴키 가부시키가이샤 유도 전동기의 회전자 및 유도 전동기 및 압축기 및 송풍기 및 공기 조화기
JP2010268561A (ja) * 2009-05-13 2010-11-25 Toshiba Corp 回転電機の回転子及び回転電機
JP2013005462A (ja) * 2011-06-10 2013-01-07 Mitsubishi Electric Corp ２重かご形回転子
EP2728718A1 (fr) * 2012-10-30 2014-05-07 Siemens Aktiengesellschaft Cage d'écureuil avec palier déformable pour barres de rotor
CN204013149U (zh) * 2014-08-01 2014-12-10 广东美芝精密制造有限公司 鼠笼式转子组件及具有其的电机
CN104767334A (zh) * 2015-03-27 2015-07-08 江苏利得尔电机有限公司 一种双鼠笼复合笼条高效电动机转子及其制备方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6246141B1 (en) * 1999-04-23 2001-06-12 Hamilton Sundstrand Corporation High torque reduced starting current electric motor
WO2013150645A1 (fr) * 2012-04-06 2013-10-10 三菱電機株式会社 Rotor à double cage
WO2015001601A1 (fr) * 2013-07-01 2015-01-08 株式会社日立産機システム Machine électrique tournante et son procédé de fabrication
US20180123432A1 (en) * 2015-04-14 2018-05-03 Siemens Aktiengesellschaft Rotor of an asynchronous machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021256125A1 (fr) * 2020-06-18 2021-12-23 株式会社 東芝 Machine électrique rotative
JP2021197885A (ja) * 2020-06-18 2021-12-27 株式会社東芝 回転電機
TWI780724B (zh) * 2020-06-18 2022-10-11 日商東芝股份有限公司 旋轉電機
JP7434075B2 (ja) 2020-06-18 2024-02-20 株式会社東芝 回転電機
WO2022064820A1 (fr) * 2020-09-25 2022-03-31 株式会社日立産機システム Rotor
JP2022054355A (ja) * 2020-09-25 2022-04-06 株式会社日立産機システム 回転子
JP7419205B2 (ja) 2020-09-25 2024-01-22 株式会社日立産機システム 回転子、かご形誘導電動機及びドライブシステム

Also Published As

Publication number Publication date
CN112352372A (zh) 2021-02-09
JPWO2019244240A1 (ja) 2020-12-17

Similar Documents

Publication Publication Date Title
JP5557685B2 (ja) 回転電機
JP4900132B2 (ja) 回転子及び回転電機
CN109906545B (zh) 同步磁阻型旋转电机
JP2001211614A (ja) 高速回転用かご形誘導電動機
JP2012100518A (ja) 回転電機
JP2015533471A (ja) 永久磁石を伴う同期電気モータおよびこのタイプの電気モータを備える電気コンプレッサ
JP6647464B1 (ja) 回転子および回転電機
WO2018051938A1 (fr) Machine électrique tournante
WO2019244240A1 (fr) Rotor et machine électrique tournante
US20190252931A1 (en) Rotary electrical machine
JP2010041786A (ja) 固定子巻線及び回転電機
US5734217A (en) Induction machine using ferromagnetic conducting material in rotor
JP2013219906A (ja) 単相誘導モータ
JP2009284763A (ja) 交流回転電機
JP2010268573A (ja) かご形誘導機及びかご形誘導機における回転子
JP5947703B2 (ja) かご形誘導電動機
JP7331380B2 (ja) 固定子
TWM612028U (zh) 節能發電機
JP5460807B1 (ja) 同期電動機
US3328616A (en) Dynamoelectric induction machines
JP5601534B2 (ja) 電機子
JP6682881B2 (ja) 回転電機
JP5869322B2 (ja) 発電機
TWI716322B (zh) 電機構造及其定子鐵芯構件
JP2019162005A (ja) ブラシレスモータ、及び送風装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18923669

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2020525116

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18923669

Country of ref document: EP

Kind code of ref document: A1