WO2016105113A1 - 회전자 - Google Patents
회전자 Download PDFInfo
- Publication number
- WO2016105113A1 WO2016105113A1 PCT/KR2015/014160 KR2015014160W WO2016105113A1 WO 2016105113 A1 WO2016105113 A1 WO 2016105113A1 KR 2015014160 W KR2015014160 W KR 2015014160W WO 2016105113 A1 WO2016105113 A1 WO 2016105113A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hollow portion
- rotor
- inner space
- hollow
- hollow part
- Prior art date
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Classifications
-
- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
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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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
- H02K1/325—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium between salient poles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/10—Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/10—Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing
- H02K9/12—Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing wherein the cooling medium circulates freely within the casing
Definitions
- the present invention relates to a rotor, and more particularly to a rotor that rotates relative to the stator in a generator or electric motor.
- the rotor rotates by the electromagnetic interaction between the rotor and the stator to perform a desired function includes a generator and an electric motor. Since the rotor must rotate relative to the stator, the lighter the weight is better.
- An object of the present invention is to solve the problems of the prior art as described above, to reduce the weight of the rotor used in a large generator or electric motor.
- Another object of the present invention is to facilitate the heat dissipation of the central portion in the longitudinal direction of the rotor in the rotor used in a large generator or electric motor.
- the present invention is composed of the support is located at both ends of the hollow portion in which the inner space is formed and the inlet hole through which the outside air flows into the inner space of the hollow portion And a rotary pole formed at a predetermined interval on an outer surface of the hollow portion, and a discharge hole is opened to a portion between the silent poles of the outer surface of the hollow portion to an inner space of the hollow portion. As air entered is discharged to the outside through the discharge hole, heat of the hollow portion and the silent pole is released.
- a plurality of discharge holes are formed at both ends of the discharge hole starting from a region corresponding to the middle portion in the longitudinal direction of the hollow portion on the outer surface of the hollow portion.
- the inner space formed inside the hollow part is opened to both ends of the hollow part, and a flange provided at the end of the support part is assembled with the hollow part, and the flange has an inlet hole through which cooling air can enter the inner space. .
- the inflow hole is formed around the flange to form a plurality of circular trajectories.
- a through hole is formed in the flange through which a fastener connecting the flanges provided at the ends of the support part installed at both ends of the hollow part passes.
- the through hole is formed at a position on the flange corresponding to a position at which the silent pole is installed.
- the present invention provides a rotating shaft, a hollow portion having an inner space in which the rotating shaft penetrates the center and is open to both sides, an axis spider supporting the hollow portion on the rotating shaft, and an outer surface of the hollow portion. It includes a silent pole installed at a predetermined interval, the air of the inner space is discharged to the part of the outer surface of the hollow portion between the silent pole to the outside to discharge the heat of the hollow portion and the silent pole.
- the air discharge portion of the inner space in the hollow portion is a discharge hole formed in the hollow portion, the discharge hole is a plurality of both ends in the region corresponding to the middle portion in the longitudinal direction of the hollow portion on the outer surface of the hollow portion Dogs are formed.
- the hollow part is formed by stacking a plurality of plates, and a gap is formed between the plates so that air in the inner space is discharged to the outer surface of the hollow part.
- the discharge hole and the gap are located between an area where the silent pole is mounted on the outer surface of the hollow part.
- the hollow part is placed in the middle part of the longitudinal direction of the rotating shaft, and air is introduced into the hollow part to discharge heat in the middle part of the rim core and the silent pole while discharging in the centrifugal direction of the rotor.
- Heat dissipation in the former is more smoothly, and cooling air is smoothly supplied to the rotor center, which is difficult to access cooling air, thereby preventing local deterioration and improving device life and performance.
- the hollow part is disposed in the longitudinal middle portion of the rotating shaft, the weight of the rotor is reduced as a whole.
- the rotating shaft is composed of a solid portion and a middle hollow portion of both ends can reduce the weight in the hollow portion can reduce the weight of the rotor without affecting the performance of the rotor, the energy consumed by the rotation of the rotor is While minimizing, the effort required for handling such as transportation can be minimized.
- FIG. 1 is a schematic cross-sectional view showing the configuration of a preferred embodiment of the rotor according to the present invention.
- Figure 2 is a front view seen from one end side of the rotating shaft showing the configuration of the embodiment of the present invention.
- Figure 3 is an exploded perspective view showing the main configuration of the embodiment of the present invention.
- Figure 4 is an operating state showing the air flow in the rotor of the embodiment of the present invention.
- Figure 5 is a longitudinal cross-sectional view showing the configuration of another embodiment of the present invention.
- FIG. 6 is a cross-sectional view showing the configuration of the embodiment shown in FIG.
- FIG. 7 is an operational state diagram showing air flowing in the embodiment shown in FIG. 5;
- first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being “connected”, “coupled” or “connected” to another component, that component may be directly connected or connected to that other component, but between components It will be understood that may be “connected”, “coupled” or “connected”.
- the rotor of the embodiment of the present invention is used in a rotating device such as a generator or an electric motor, in particular in a large generator or electric motor.
- the center of rotation of the rotor is the axis of rotation 10.
- the rotary shaft 10 has a length up to several meters in the present invention.
- the rotating shaft 10 is composed of a support 12 of both ends and a hollow 14 of the middle portion.
- the support 12 is a part rotatably supported by a bearing (not shown) installed in the housing of the rotating apparatus.
- the support 12 is cylindrical in this embodiment. Of course, the support 12 may be cylindrical.
- the support 12 may have a circular outer surface of at least a portion supported by the bearing.
- Flange 16 is formed at each end of the support 12, respectively.
- the flange 16 is made in the shape of a disc.
- the flange 16 is formed through a plurality of inlet holes (18).
- the inlet hole 18 is a portion for allowing outside air to flow into the inner space 20 to be described below.
- the inlet hole 18 is formed in a plurality of the flange 16, the trajectory is formed to form a circle.
- the inflow hole 18 itself and its formation trajectory may have various shapes according to design conditions.
- the flange 16 is fastened by bolts (not shown) for connecting the support portions 12 on both sides.
- the flange 16 is provided with a through hole (not shown), which may be on the same trajectory as the inlet 18 or on another trajectory.
- the through hole is not shown in the drawings for convenience.
- the connection structure of the support part 12 and the hollow part 14 may be variously designed. However, the bolt passing through the through hole should be designed so as not to prevent air from flowing into the discharge hole 22 formed in the hollow portion 14.
- An inner space 20 is formed inside the hollow part 14.
- the inner space 20 is open to both ends of the hollow part 14, and the open part is shielded from the outside by the flange 16.
- Steps 21 are formed on inner surfaces of both inlets of the inner space 20, respectively.
- the stepped portion 21 is a portion on which the flange 16 is seated.
- the inner diameter of the inner side of the inner space 20 is formed to be smaller than the outer diameter of the outer side based on the stepped portion 21, so that the flange 16 is further inside the inner space 20 based on the stepped portion 21. Do not enter
- the hollow part 14 serves as a rim core, and an outer surface thereof is equipped with a silent pole 24 to be described below.
- a plurality of discharge holes 22 are formed through the hollow part 14 to open to the outer surface of the hollow part 14.
- the inner space 20 communicates with the outside by the discharge hole 22.
- the discharge hole 22 is concentrated in the longitudinal central region of the hollow part 14. This is for effectively dissipating heat in the middle portion of the silent pole 24.
- the discharge hole 22 is formed to open to the outer surface of the hollow portion 14 is not equipped with the silent pole 24 to be described below.
- a plurality of discharge holes 22 are formed at both ends of the discharge hole 22 starting from a region corresponding to the middle portion in the longitudinal direction of the hollow portion 14 on the outer surface of the hollow portion 14.
- Air entering the internal space 20 through the inlet hole 18 is discharged through the discharge hole 22 and is discharged to the outside by receiving the heat of the hollow portion 14 and the silent pole 24.
- the discharge hole 22 is formed to be opened to an area without the silent pole 24 in the outer surface of the hollow part 14, and a plurality of the discharge holes 22 are formed in a row or in a predetermined area. do.
- a silent pole 24 is mounted on the outer surface of the hollow part 14, ie, the rim core.
- the silent pole 24 is formed by winding a coil around a stacked core.
- the plurality of silent poles 24 are mounted to the hollow portion 14 at predetermined intervals.
- the seal pole 24 may be mounted on the outer surface of the hollow part 14 using a dovetail structure or a bolt.
- a plurality of cooling fans 26 are provided along both end edges of the hollow part 14.
- the cooling fan 26 guides the air naturally according to the rotation of the rotor to allow the cooling air to flow to the outer surface of the silent pole 24 and the hollow part 14.
- the installation position or the number of installation of the cooling fan 26 depends on the design conditions of the rotor.
- the rotation center of the rotor of the present embodiment is the rotation shaft 110.
- Both ends of the rotating shaft 110 are support parts 112 supported by a bearing (not shown).
- the support part 112 is a part rotatably supported by a bearing installed in the housing of the rotating apparatus.
- the hollow portion 114 is made of a cylindrical shape, and serves as a rim core.
- An inner space 116 is formed inside the hollow part 114.
- the rotating shaft 110 penetrates the center of the inner space 116, and the shaft spider 113 connects the inner surface of the inner space 116 and the rotating shaft 110. Both ends of the inner space 116 is open to communicate with the outside.
- a plurality of discharge holes 118 are formed through the hollow part 114 to open to the outer surface of the hollow part 114.
- the inner space 116 communicates with the outside by the discharge hole 118.
- the discharge hole 118 is concentrated in the central region in the longitudinal direction of the hollow part 114. This is for effectively dissipating heat in the middle portion of the silent pole 124 which will be described below.
- the discharge hole 118 is formed to open to the outer surface of the hollow portion 114 is not equipped with the silent pole 124 to be described below.
- a plurality of discharge holes 118 are formed at both ends of the discharge hole 118 starting from a region corresponding to the middle portion in the longitudinal direction of the hollow portion 114 on the outer surface of the hollow portion 114.
- the hollow part 114 may be formed by stacking a plurality of plates, in which case, a gap may be provided between the plates to replace the discharge hole 118.
- Air entering the inner space 116 through both ends of the inner space 116 is discharged through the discharge hole 118 and is discharged to the outside by receiving the heat of the hollow portion 114 itself and the silent pole 120 Done.
- the discharge hole 118 is formed to be opened to an area without the silent pole 120 on the outer surface of the hollow part 114, and a plurality of the heat holes 118 are formed in a predetermined area. do.
- the hollow pole 114 that is, the silent pole 120 is mounted on the outer surface of the rim core.
- the silent pole 120 is formed by winding a coil around a stacked core.
- the plurality of silent poles 120 are mounted to the hollow part 114 at predetermined intervals.
- the seal pole 120 may be mounted on an outer surface of the hollow part 114 using a dovetail structure or a bolt.
- a plurality of cooling fans 122 are provided along both end edges of the hollow part 114.
- the cooling fan 122 naturally guides air according to the rotation of the rotor to allow cooling air to flow to the outer surfaces of the silent pole 120 and the hollow part 114.
- the installation position or the number of installation of the cooling fan 122 depends on the design conditions of the rotor.
- the rotation shaft 10 is in close contact with the stepped portions 21 of the inlet 21 on both sides of the inner space 20 of the hollow part 14 of the flange 16 of the support part 12. It is made by joining each other in a seated state. Since the internal shaft 20 is formed in the hollow portion 14, the rotation shaft 10 is removed by the volume of the internal space 20 so that the weight is relatively smaller than the rotor of the same size. do.
- the assembly of the rotor is completed.
- the rotor thus made is located in a space formed inside the stator in a rotating device such as a generator or an electric motor.
- the support parts 12 on both sides are rotatably supported by a bearing installed in the housing of the rotating device.
- the rotor installed in the rotating device rotates by electromagnetic interaction with the stator. That is, the rotor is rotated by the electromagnetic interaction between the coil in the silent pole 24 and the coil installed in the stator. When rotation occurs by such electromagnetic interaction, heat is generated in the coils. If the heat is not released to the outside smoothly or the rotational performance of the rotor is damaged.
- the air around the silent pole 24 forms an air flow in the centrifugal direction, and the airflow formed by the cooling fan 26 is mostly the silent pole 24. It is not delivered to the central part of and moves to the stator.
- the air pressure is lowered in the central portion of the silent pole 24 and the hollow portion 14, the air in the inner space 20 is discharged through the discharge hole 22 opened to the outer surface of the hollow portion 14. It is discharged to the outside of the hollow portion 14.
- the air flow in the inner space 20 is discharged to the discharge hole 22. They meet each other in the vicinity, and are discharged to the outside through the discharge hole 22.
- the air discharged through the discharge hole 22 discharges heat in a region corresponding to the middle portion of the rotor in the longitudinal direction. Therefore, the airflow formed in the intermediate portions at both ends of the silent pole 24 by the cooling fan 26 does not reach the middle of the silent pole 24, but flows in the centrifugal direction of the rotor and the silent pole 24. And the heat of the middle portion of the hollow portion 14 can be compensated for the overheating of the middle portion.
- the discharge hole 22 of the hollow portion 14 intensively transfers air to the longitudinal central region of the hollow portion 14 and to the longitudinal middle portion of the silent pole 24. It is to be able to release heat intensively. Therefore, the heat generated from the rotor can be smoothly discharged to the outside as a whole.
- the heat dissipation in the embodiment illustrated in FIG. 5 to FIG. 7 is similar to that of the embodiment described above, and thus will be briefly described. That is, when the rotation shaft 110 rotates, the air pressure in the internal space 116 of the hollow portion 114 is lowered, so that air in the internal space 116 is discharged through the discharge hole 118. It is delivered to the outside as shown in FIG. Of course, the air flow formed by the cooling fan 122 is also formed along the outer surface of the hollow part 114 to cool the silent pole 120.
- the air discharged from the internal space 116 through the discharge hole 118 is able to intensively discharge the heat of the middle portion of the silent pole 120 and the hollow portion 114 to the outside.
- the flange 16 of the support 12 is configured to be fastened to the hollow portion 14 by a bolt, but is not necessarily so.
- the flange 16 of the support 12 may be directly coupled to the hollow portion 14 or integrally formed without using bolts. That is, the support shaft 12 and the hollow portion 14 may be made integrally by making the rotary shaft 10 using a 3D printer.
- air may be introduced into the internal space 20 through the gap between the flange 16 and the hollow part. Can be. In this case, these gaps become a kind of the inlet hole 18.
- the shape of the inlet 18 and the outlet 22 is circular, but is not limited thereto.
- the inlet hole 18 and the outlet hole 22 may have a variety of shapes such as oval, polygon, as well as circular.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
Claims (10)
- 내부공간이 형성된 중공부의 양단에 지지부가 위치하여 구성되며 외부의 공기가 상기 중공부의 내부공간으로 유입되는 유입공이 상기 중공부에 형성되는 회전축과,상기 중공부의 외면에 소정의 간격을 두고 설치되는 세일런트폴을 포함하고,상기 중공부의 외면중 상기 세일런트폴 사이의 부분으로 토출공이 개방되게 형성되어 상기 중공부의 내부공간으로 들어간 공기가 상기 토출공을 통해 외부로 토출되면서 중공부와 상기 세일런트폴의 열을 방출하는 회전자.
- 제 1 항에 있어서, 상기 토출공은 상기 중공부의 외면에서 상기 중공부의 길이방향의 중간부에 해당되는 영역에서 시작해서 양단부쪽으로 다수개가 형성되는 회전자.
- 제 2 항에 있어서, 상기 중공부의 내부에 형성되는 내부공간은 상기 중공부의 양단으로 개방되고 상기 지지부의 단부에 구비되는 플랜지가 상기 중공부와 조립이 되고 상기 플랜지에는 상기 내부공간으로 냉각공기가 들어갈 수 있는 유입공이 형성되는 회전자.
- 제 3 항에 있어서, 상기 유입공은 상기 플랜지를 둘러 다수 개가 원형의 궤적을 형성하도록 형성되는 회전자.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서, 상기 중공부 양단에 설치되는 상기 지지부의 단부에 구비되는 플랜지부 사이를 연결하는 체결구가 관통하는 관통공이 상기 플랜지에 형성되는 회전자.
- 제 5 항에 있어서, 상기 관통공은 상기 세일런트폴이 설치된 위치와 대응되는 상기 플랜지 상의 위치에 형성되는 회전자.
- 회전축과,상기 회전축이 중앙을 관통하고 양측으로 개방된 내부공간이 형성된 중공부와,상기 회전축에 상기 중공부를 지지하는 축스파이더와,상기 중공부의 외면에 소정의 간격을 두고 설치되는 세일런트폴을 포함하고,상기 중공부의 외면중 상기 세일런트폴 사이의 부분으로 상기 내부공간의 공기가 외부로 토출되면서 중공부와 상기 세일런트폴의 열을 방출하는 회전자.
- 제 7 항에 있어서, 상기 중공부에서 상기 내부공간의 공기가 토출되는 부분은 상기 중공부에 형성된 토출공으로서, 상기 토출공은 상기 중공부의 외면에서 상기 중공부의 길이방향의 중간부에 해당되는 영역에서 시작해서 양단부쪽으로 다수개가 형성되는 회전자.
- 제 7 항에 있어서, 상기 중공부는 다수개의 판이 적층되어 형성되는데, 상기 판의 사이에 틈새가 형성되어 상기 내부공간의 공기가 상기 중공부의 외면으로 토출되는 회전자.
- 제 7 항 내지 제 9 항 중 어느 한 항에 있어서, 상기 토출공과 틈새는 상기 중공부의 외면에서 상기 세일런트폴이 장착된 영역 사이에 위치하는 회전자.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2972225A CA2972225A1 (en) | 2014-12-24 | 2015-12-23 | Rotor |
JP2017552772A JP2018501773A (ja) | 2014-12-24 | 2015-12-23 | 回転子 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140189101A KR101711457B1 (ko) | 2014-12-24 | 2014-12-24 | 발전기 또는 전동기용 회전자 |
KR10-2014-0189101 | 2014-12-24 |
Publications (1)
Publication Number | Publication Date |
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WO2016105113A1 true WO2016105113A1 (ko) | 2016-06-30 |
Family
ID=56151048
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/KR2015/014160 WO2016105113A1 (ko) | 2014-12-24 | 2015-12-23 | 회전자 |
Country Status (4)
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JP (1) | JP2018501773A (ko) |
KR (1) | KR101711457B1 (ko) |
CA (1) | CA2972225A1 (ko) |
WO (1) | WO2016105113A1 (ko) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016225180A1 (de) | 2016-12-15 | 2018-06-21 | Continental Automotive Gmbh | Elektrische Maschine |
CN108880106A (zh) * | 2018-07-30 | 2018-11-23 | 山东冬瑞高新技术开发有限公司 | 一种具有空气冷却装置的电机 |
JP7011616B2 (ja) * | 2019-02-26 | 2022-01-26 | 東芝三菱電機産業システム株式会社 | 同期回転電機 |
ES2886337T3 (es) | 2019-04-03 | 2021-12-17 | Bohumil Mrazek | Rotor de motor sin escobillas |
CN115694010A (zh) * | 2021-07-28 | 2023-02-03 | 福伊特专利有限公司 | 用于电机的转子 |
DE102021129618A1 (de) | 2021-11-12 | 2023-05-17 | MTU Aero Engines AG | Rotorwelle für einen Elektromotor, Anordnung für eine Rotorwelle und Verfahren zur Fertigung einer Anordnung für eine Rotorwelle |
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JP2002051503A (ja) * | 2000-08-02 | 2002-02-15 | Toshiba Corp | 永久磁石式リラクタンス型回転電機 |
US20030030333A1 (en) * | 2001-08-08 | 2003-02-13 | Johnsen Tyrone A. | Cooling of a rotor for a rotary electric machine |
US6982506B1 (en) * | 2004-08-31 | 2006-01-03 | Hamilton Sundstrand Corporation | Cooling of high speed electromagnetic rotor with fixed terminals |
US20100320850A1 (en) * | 2009-06-17 | 2010-12-23 | Lemmers Jr Glenn C | Oil cooled generator |
JP5629828B2 (ja) * | 2011-06-30 | 2014-11-26 | 株式会社日立製作所 | 回転電機 |
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JPS60156232A (ja) * | 1984-01-25 | 1985-08-16 | Toshiba Corp | 突極形回転子 |
JPS60124267U (ja) * | 1984-01-30 | 1985-08-21 | 三菱電機株式会社 | 突極形回転子 |
IT212393Z2 (it) * | 1987-09-09 | 1989-07-04 | Magneti Marelli Spa | Rotore per un alternatore partico larmente per autoveicoli |
JP5522442B2 (ja) * | 2009-10-30 | 2014-06-18 | アイシン・エィ・ダブリュ株式会社 | 回転電機用ロータ |
JP5738007B2 (ja) | 2011-03-02 | 2015-06-17 | 株式会社小松製作所 | 電動機の冷却構造及び電動機 |
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2014
- 2014-12-24 KR KR1020140189101A patent/KR101711457B1/ko active IP Right Grant
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2015
- 2015-12-23 JP JP2017552772A patent/JP2018501773A/ja active Pending
- 2015-12-23 WO PCT/KR2015/014160 patent/WO2016105113A1/ko active Application Filing
- 2015-12-23 CA CA2972225A patent/CA2972225A1/en not_active Abandoned
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JP2002051503A (ja) * | 2000-08-02 | 2002-02-15 | Toshiba Corp | 永久磁石式リラクタンス型回転電機 |
US20030030333A1 (en) * | 2001-08-08 | 2003-02-13 | Johnsen Tyrone A. | Cooling of a rotor for a rotary electric machine |
US6982506B1 (en) * | 2004-08-31 | 2006-01-03 | Hamilton Sundstrand Corporation | Cooling of high speed electromagnetic rotor with fixed terminals |
US20100320850A1 (en) * | 2009-06-17 | 2010-12-23 | Lemmers Jr Glenn C | Oil cooled generator |
JP5629828B2 (ja) * | 2011-06-30 | 2014-11-26 | 株式会社日立製作所 | 回転電機 |
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JP2018501773A (ja) | 2018-01-18 |
KR101711457B1 (ko) | 2017-03-13 |
KR20160078184A (ko) | 2016-07-04 |
CA2972225A1 (en) | 2016-06-30 |
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