JPS63277438A - Structure of rotor for high-speed rotating electric machine - Google Patents
Structure of rotor for high-speed rotating electric machineInfo
- Publication number
- JPS63277438A JPS63277438A JP5587587A JP5587587A JPS63277438A JP S63277438 A JPS63277438 A JP S63277438A JP 5587587 A JP5587587 A JP 5587587A JP 5587587 A JP5587587 A JP 5587587A JP S63277438 A JPS63277438 A JP S63277438A
- Authority
- JP
- Japan
- Prior art keywords
- stator
- silicon steel
- rotor
- cooling fins
- loss
- 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
Links
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 229910021417 amorphous silicon Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 23
- 230000020169 heat generation Effects 0.000 abstract description 4
- 238000010030 laminating Methods 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 11
- 229910052742 iron Inorganic materials 0.000 description 10
- 230000008859 change Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は高速タービンによって駆動される高速回転電機
の固定子構造に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a stator structure for a high-speed rotating electric machine driven by a high-speed turbine.
（従来の技術）
内燃機関の排出する排気ガスエネルギーを用いてコンプ
レッサを有するタービンを駆動し、コンプレッサの作動
により内燃機関の吸気を過給するターボチャージャが開
発されている。そして、この種のターボチャージャの回
転軸に電動−発電機を直結し、回転子として永久磁石を
用いた超高速電乃−発電機の提案が特願昭６０−１９０
０９５号に示されている。(Prior Art) A turbocharger has been developed that uses exhaust gas energy discharged from an internal combustion engine to drive a turbine having a compressor, and supercharges intake air of the internal combustion engine by operating the compressor. A patent application filed in 1988 proposed an ultra-high-speed electric generator in which an electric generator was directly connected to the rotating shaft of this type of turbocharger and a permanent magnet was used as the rotor.
No. 095.
このようなターボチャージャではタービンの回転数が１
０万ＲＰＭ以上になるものであり、したがってタービン
の回転軸に直結された電動−発電機も１０万ＲＰＭ以上
の回転数に駆動され、発電作用を行っている。In such a turbocharger, the turbine rotation speed is 1
The rotation speed is 00,000 RPM or more, and therefore, the electric motor-generator directly connected to the rotating shaft of the turbine is also driven to a rotation speed of 100,000 RPM or more to generate electricity.
（発明が解決しようとする問題点）
上記の提案における電動−発電機では、永久磁石を用い
た回転子の回転数が１０万ＲＰＭ以上になるので、対応
する固定子コアに生ずる磁束の変化が超高速となり、し
たがってコア素材の鉄損による発熱が非常に大となり、
発電効率が低下するという問題が生じている。(Problems to be Solved by the Invention) In the motor-generator proposed above, the rotation speed of the rotor using permanent magnets is 100,000 RPM or more, so the change in magnetic flux occurring in the corresponding stator core is The speed is extremely high, and therefore the heat generation due to iron loss in the core material becomes extremely large.
A problem has arisen in which power generation efficiency decreases.
本発明は上記の問題に鑑みてなされたものであり、その
目的は、固定子コア素材として高周波数の交番磁界にて
も鉄損の小さい素材を使用するとともに冷却用フィンを
設け、発電効率を向上させようとする高速回転電機の固
定子構造を提供するにある。The present invention was made in view of the above problems, and its purpose is to use a material with low core loss even in high-frequency alternating magnetic fields as the stator core material, and provide cooling fins to improve power generation efficiency. The purpose of the present invention is to provide a stator structure for a high-speed rotating electrical machine.
（問題点を解決するための手段）
本発明では、アモルファスの珪素鋼材と珪素鋼板よりな
る冷却用フィンとを積重ねて固定子コアを構成した高速
回転電機の固定子構造が提供される。(Means for Solving the Problems) The present invention provides a stator structure for a high-speed rotating electric machine in which a stator core is constructed by stacking amorphous silicon steel material and cooling fins made of silicon steel plates.
（作用）
本発明では回転電機の固定子として鉄損の小さいアモル
ファスの珪素鋼材の積層体と珪素鋼板とを交互に重ね、
珪素鋼板をアモルファスの珪素鋼材の積層体より突出さ
せて冷却用フィンを形成させたので、回転電機の作動中
に固定子に生ずる交番磁界が高速で変化しても鉄損によ
る損失が小になるとともに、その発熱も冷却用フィンに
より放熱される作用がある。(Function) In the present invention, laminated bodies of amorphous silicon steel materials with low iron loss and silicon steel plates are alternately stacked as a stator of a rotating electric machine,
Silicon steel plates are made to protrude from the laminated body of amorphous silicon steel materials to form cooling fins, so even if the alternating magnetic field generated in the stator changes at high speed during the operation of a rotating electrical machine, loss due to iron loss is reduced. At the same time, the heat generated is also radiated by the cooling fins.
（実施例）
つぎに本発明の実施例について図面を用いて詳細に説明
する。(Example) Next, an example of the present invention will be described in detail using the drawings.
第１図は本発明の一実施例を示す固定子と回転子の断面
図であり、第２図は回転電機付ターボチャージャの一例
を示す構成断面図である。FIG. 1 is a sectional view of a stator and rotor showing an embodiment of the present invention, and FIG. 2 is a sectional view of a configuration of an example of a turbocharger with a rotating electric machine.
第１．２図において、１はターボチャージャ、２はコン
プレッサハウジング、３はタービンハウジング、４はセ
ンタハウジングであり、センタハウジング４の両端には
ベアリング４１が設けられ、該ベアリング４１に軸支さ
れたシャフト５か回転自在に設けられている。４２は潤
滑油流路であり、ベアリング４２に送油するものである
。In Fig. 1.2, 1 is a turbocharger, 2 is a compressor housing, 3 is a turbine housing, and 4 is a center housing. Bearings 41 are provided at both ends of the center housing 4, and the bearings are supported by the bearings 41. A shaft 5 is rotatably provided. Reference numeral 42 is a lubricating oil passage, which supplies oil to the bearing 42.
シャフト５の両端部にはコンプレッサインペラ２１、お
よびタービンインペラ３１が取付けられ、それぞれコン
プレッサハウジング２、およびタービンハウジング３の
内部に納められている。A compressor impeller 21 and a turbine impeller 31 are attached to both ends of the shaft 5, and are housed inside the compressor housing 2 and turbine housing 3, respectively.
タービンインペラ３１はスクロール３２に５Ｌ気される
排気ガスのエネルギーを受けて回転し、シャフト５を介
してコンプレッサインペラ２１を回転せしめ、吸気管２
２より導入した空気をディフューザ２３にて圧力変換し
て、図示していないエンジンのシリンダに圧送するよう
作動する。The turbine impeller 31 rotates by receiving the energy of 5L of exhaust gas from the scroll 32, rotates the compressor impeller 21 via the shaft 5, and rotates the compressor impeller 21 through the shaft 5.
The diffuser 23 converts the pressure of the air introduced through the diffuser 23 and sends it under pressure to the cylinders of the engine (not shown).
６はコンプレッサインペラ２１とタービンインペラ３１
との間のシャフト５に取付けた円柱形状の回転子であり
、永久磁石６１とチューブ６２を有している。6 is a compressor impeller 21 and a turbine impeller 31
It is a cylindrical rotor attached to the shaft 5 between the two, and has a permanent magnet 61 and a tube 62.
永久磁石６１は例えば希土類元素を含んだ中空円盤状の
磁石材料にて形成され、ラジアル方向に強力な磁力線を
放射するよう着磁されている。The permanent magnet 61 is made of, for example, a hollow disk-shaped magnetic material containing a rare earth element, and is magnetized so as to radiate strong lines of magnetic force in the radial direction.
そして、強力な永久磁石６１の外周には、例えばチタン
合金よりなる高抗張力薄肉のチューブ６２が圧入され、
高速回転時の回転子６の遠心力による変形や破損を防止
している。A high-tensile, thin-walled tube 62 made of, for example, a titanium alloy is press-fitted into the outer periphery of the strong permanent magnet 61.
This prevents deformation and damage of the rotor 6 due to centrifugal force during high-speed rotation.
７は固定子であり、゛回転子５に対応してその外周方向
に設けられ、固定子コア７１′として高周波数の交番磁
界にて鉄損の小さいアモルファスの珪素鋼材が用いられ
ている。そして、アモルファスの珪素鋼材はその製造上
の問題から厚さが例えば数十ミクロン程度に薄いため、
所定の厚さに積層し、珪素鋼板よりなる冷却用フィン７
２を重ね、更に積層したアモルファスの珪素鋼材と冷却
用フィン７２とを交互に重ね、所定の寸法になるよう積
層されて固定子７の鉄心部分として形成されている。な
お、冷却用フィン７２の放射方向の外端部は固定子コア
７１の外周部分より放射方向に突出しているため、固定
子７の鉄心部分の全表面積の増加となってその冷却性能
が向上し、回転電機の全負荷運転時においても耐熱温度
の比較的に低いアモルファスの珪素鋼材の所定耐熱温度
の例えば１５０℃を超過しないように冷却効率よく構成
されている。A stator 7 is provided along the outer periphery of the rotor 5, and a stator core 71' is made of amorphous silicon steel, which has a small iron loss in a high-frequency alternating magnetic field. Due to manufacturing problems, amorphous silicon steel is thin, for example, on the order of several tens of microns.
Cooling fins 7 made of silicon steel plates laminated to a predetermined thickness
2 are stacked, and then the laminated amorphous silicon steel materials and the cooling fins 72 are alternately stacked and stacked to a predetermined size to form the core portion of the stator 7. Note that since the outer end portions of the cooling fins 72 in the radial direction protrude in the radial direction from the outer circumferential portion of the stator core 71, the total surface area of the iron core portion of the stator 7 is increased and its cooling performance is improved. Even during full load operation of the rotating electric machine, the cooling efficiency is such that the temperature does not exceed a predetermined heat resistance temperature of amorphous silicon steel material, which has a relatively low heat resistance temperature of, for example, 150°C.
７３は固定子コイルであり、上記の鉄心部分に生ずる交
番磁界に鎖交するよう、その外周部に巻回されている。A stator coil 73 is wound around the outer periphery of the stator coil so as to interlink with the alternating magnetic field generated in the above-mentioned iron core.
このような構成になる本実施例においては、スクロール
３２に送気される排気ガスのエネルギーを受けてタービ
ンインペラ３１が高速に駆動され、シャフト５を介して
回転子６およびコンプレッサインペラ２１を回転させる
。そして、コンプレッサインペラ２１は吸気管２２から
導入した空気を圧縮してエンジンのシリンダに圧送して
エンジン出力を増加させる。In this embodiment having such a configuration, the turbine impeller 31 is driven at high speed by receiving the energy of the exhaust gas sent to the scroll 32, and rotates the rotor 6 and the compressor impeller 21 via the shaft 5. . The compressor impeller 21 compresses the air introduced from the intake pipe 22 and sends it under pressure to the cylinders of the engine, thereby increasing the engine output.
一方、回転子６は永久磁石６１の高速回転により固定子
コア７１に高い周波数の磁束変化を生ぜしめ、この磁束
変化によりヒステリシス損や渦電流損の鉄損による発熱
を生ずるが、アモルファスの珪素鋼材よりなるため鉄損
による発熱は小となリ、さらに珪素鋼板の冷却用フィン
７２自体の鉄損の発熱や固定子コイル７３の銅損による
発熱とともに、冷却用フィン７２を介して放熱され、固
定子７の温度上昇が防止できることになる。On the other hand, the rotor 6 causes a high frequency magnetic flux change in the stator core 71 due to the high speed rotation of the permanent magnet 61, and this magnetic flux change causes heat generation due to iron loss such as hysteresis loss and eddy current loss. Therefore, the heat generated by iron loss is small, and in addition to the heat generated by the iron loss of the silicon steel cooling fin 72 itself and the heat generated by the copper loss of the stator coil 73, the heat is radiated through the cooling fin 72, and the fixed This means that the temperature of the child 7 can be prevented from rising.
そして％磁束変化に応する固定子コイル７３カ）らの発
電電力は上記の発熱の損失が小となるため、その発電効
率が向上することになる。The power generated by the stator coils 73 in response to the % change in magnetic flux has a small loss in heat generation, so that the power generation efficiency is improved.
なお、上記実施例では回転電機の発電機作動時について
説明したが、電動機作動として固定子コイル７３に所定
の高周波電力を供給して回転子６を駆動し、コンプレッ
サインペラ２１の作動により過給気をエンジンに供給す
る場合にも、固定子７の鉄損や銅損による損失を減少せ
しめ、放熱を良好にするものである。In the above embodiment, the generator of the rotating electrical machine is operated. However, when the motor is operated, a predetermined high-frequency power is supplied to the stator coil 73 to drive the rotor 6, and the compressor impeller 21 is operated to generate supercharging air. When supplying to an engine, the loss due to iron loss and copper loss of the stator 7 is reduced, and heat dissipation is improved.
以上本発明をターボチャージャに使用した実施例につい
て説明したが、本発明の主旨の範囲内で例えば他の高速
タービンに用いる回転電機の固定子に応用するように種
々の変形が可能であり、これらを本発明の範囲から排除
するものではない。The embodiments in which the present invention is applied to a turbocharger have been described above, but various modifications can be made within the scope of the present invention, such as applying it to a stator of a rotating electrical machine used in other high-speed turbines. are not excluded from the scope of the present invention.
（発明の効果）
本発明では、回転電機の固定子として鉄損の小さいアモ
ルファスの珪素鋼材の積層体と珪素鋼板とを交互に重ね
、該珪素鋼板をアモルファスの珪素鋼材の積層体より突
出させて冷却用フィンを形成したので、固定子に生ずる
交番磁界の変化が高速の場合でも鉄損による損失が小と
なり、発電効率を向上させる効果がある。(Effects of the Invention) In the present invention, as a stator of a rotating electrical machine, a laminate of amorphous silicon steel materials with low core loss and silicon steel plates are alternately stacked, and the silicon steel plates are made to protrude from the laminate of amorphous silicon steel materials. Since the cooling fins are formed, even when the alternating magnetic field generated in the stator changes rapidly, loss due to iron loss is reduced, which has the effect of improving power generation efficiency.
また、上述の鉄損による発熱も冷却用フィンの作用によ
り効率よく放熱され、耐熱温度の低いアモルファスの珪
素鋼材の性能を十分に維持できる効果も生ずる。Moreover, the heat generated by the above-mentioned iron loss is efficiently dissipated by the action of the cooling fins, and the performance of the amorphous silicon steel material, which has a low heat resistance temperature, can be sufficiently maintained.
第１図は本発明の一実施例を示す固定子と回転子の断面
図、第２図は回転電機付ターボチャージャの一例を示す
構成断面図である。
１・・・ターボチャージャ、６・・・回転子、７・・・
固定子、７１・・・固定子コア、７２・・・冷却用フィ
ン、７３・・・固定子コイル。FIG. 1 is a sectional view of a stator and rotor showing one embodiment of the present invention, and FIG. 2 is a structural sectional view showing an example of a turbocharger with a rotating electrical machine. 1...turbocharger, 6...rotor, 7...
Stator, 71... Stator core, 72... Cooling fins, 73... Stator coil.
Claims (1)
ンとを交互に重ねて固定子コアを構成したことを特徴と
する高速回転電機の固定子構造。A stator structure for a high-speed rotating electrical machine, characterized in that a stator core is constructed by alternately stacking cooling fins made of amorphous silicon steel material and silicon steel plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5587587A JPS63277438A (en) | 1987-03-11 | 1987-03-11 | Structure of rotor for high-speed rotating electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5587587A JPS63277438A (en) | 1987-03-11 | 1987-03-11 | Structure of rotor for high-speed rotating electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63277438A true JPS63277438A (en) | 1988-11-15 |
Family
ID=13011270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5587587A Pending JPS63277438A (en) | 1987-03-11 | 1987-03-11 | Structure of rotor for high-speed rotating electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63277438A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7821177B2 (en) | 2007-03-20 | 2010-10-26 | Nippon Soken, Inc. | Laminated core |
| US8760028B2 (en) * | 2004-09-01 | 2014-06-24 | Hitachi, Ltd. | Electrical rotating machine with local heat reduction |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60213234A (en) * | 1984-04-05 | 1985-10-25 | Mitsubishi Electric Corp | Magnetic circuit iron core |
-
1987
- 1987-03-11 JP JP5587587A patent/JPS63277438A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60213234A (en) * | 1984-04-05 | 1985-10-25 | Mitsubishi Electric Corp | Magnetic circuit iron core |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8760028B2 (en) * | 2004-09-01 | 2014-06-24 | Hitachi, Ltd. | Electrical rotating machine with local heat reduction |
| US7821177B2 (en) | 2007-03-20 | 2010-10-26 | Nippon Soken, Inc. | Laminated core |
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