JPH0514640U - Magnetic bearing device - Google Patents
Magnetic bearing deviceInfo
- Publication number
- JPH0514640U JPH0514640U JP6975191U JP6975191U JPH0514640U JP H0514640 U JPH0514640 U JP H0514640U JP 6975191 U JP6975191 U JP 6975191U JP 6975191 U JP6975191 U JP 6975191U JP H0514640 U JPH0514640 U JP H0514640U
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- magnetic
- rotor
- bearing device
- resolver
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
- F16C32/0427—Passive magnetic bearings with permanent magnets on both parts repelling each other for axial load mainly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
- F16C32/0429—Passive magnetic bearings with permanent magnets on both parts repelling each other for both radial and axial load, e.g. conical magnets
- F16C32/0431—Passive magnetic bearings with permanent magnets on both parts repelling each other for both radial and axial load, e.g. conical magnets with bearings for axial load combined with bearings for radial load
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
(57)【要約】
【目的】高速回転する回転軸をレゾルバ内蔵の永久磁石
形同期モータと磁石の反発力利用の永久磁石ブロックと
により非接触に構成する。
【構成】回転軸１２にレゾルバ１４を取付けた回転子１
１とコイルを巻回した固定子１３とによる永久磁石形同
期モータ１を配置し、レゾルバ１４により回転中の回転
子１１の磁極と同一極性になるように固定子１３のコイ
ルへの通電を制御して磁気力により回転子１１を浮上さ
せるとともに、磁気反発力を利用した永久磁石ブロック
２，２を回転軸１３に取付け、左右方向の非接触を図っ
て軸受装置を構成させる。
(57) [Abstract] [Purpose] A rotating shaft that rotates at high speed is made non-contact by a permanent magnet type synchronous motor with a built-in resolver and a permanent magnet block that utilizes the repulsive force of the magnet. [Structure] Rotor 1 having resolver 14 attached to rotary shaft 12
1 and a stator 13 wound with a coil, a permanent magnet type synchronous motor 1 is arranged, and a resolver 14 controls energization of the coil of the stator 13 so as to have the same polarity as the magnetic pole of the rotating rotor 11. Then, the rotor 11 is levitated by the magnetic force, and the permanent magnet blocks 2 and 2 utilizing the magnetic repulsive force are attached to the rotary shaft 13 so that the bearing device is configured so as not to contact in the left-right direction.
Description
【０００１】[0001]
本考案は高速度回転するモータなどに使用される磁気軸受装置に関する。 The present invention relates to a magnetic bearing device used for a motor that rotates at high speed.
【０００２】[0002]
車載される回転体の軸受には通常、ベアリングが使用されており、特に高速回 転するモータではそのベアリングによる機械損が大となって、モータの効率が低 下してしまうという欠点がある。 Bearings are usually used as the bearings of on-vehicle rotating bodies, and there is a drawback that the motor efficiency is lowered due to large mechanical loss due to the bearings, especially in high-speed rotating motors.
【０００３】 そして、このようなベアリングによる損失を除くため、電磁力により回転電機 の軸受を非接触とする種々の提案がなされており、その一例として実開昭６２− １１５７５３号公報には磁気浮上回転電機が示されている。In order to eliminate the loss due to such bearings, various proposals have been made to make the bearings of a rotary electric machine non-contact by electromagnetic force. As an example, magnetic levitation is disclosed in Japanese Utility Model Laid-Open No. 62-115753. A rotating electric machine is shown.
【０００４】[0004]
上述の公開公報に示された提案ではモータ部のコアやコイル以外に二種のラジ アル軸受部のコアやコイルと、二種の変位センサのコアやコイルを備えており、 これらのコイルに供給する電流を制御し、コアに生ずる磁力によって回転軸を浮 上させているため、機構が複雑となりその制御に手数を要するという問題がある 。 In the proposal disclosed in the above-mentioned publication, in addition to the core and the coil of the motor section, the core and the coil of the two types of radial bearings and the core and the coil of the two types of displacement sensors are provided. The current is controlled and the rotating shaft is levitated by the magnetic force generated in the core, which makes the mechanism complicated and requires control.
【０００５】 本考案はこのような問題に鑑みてなされたものであり、その目的は一対のコイ ルと永久磁石とによるモータと、他に永久磁石の組合わせにて磁気軸受を構成さ せて機械損を低減しようとする磁気軸受装置を提供することにある。The present invention has been made in view of such a problem, and an object thereof is to construct a magnetic bearing by combining a motor with a pair of coils and a permanent magnet, and a permanent magnet. An object is to provide a magnetic bearing device that attempts to reduce mechanical loss.
【０００６】[0006]
上述の目的を達成するために本考案によれば、同極性の磁極の反発力を利用し て回転軸を非接触に保持する磁気軸受装置において、前記回転軸に回転磁石部と 固定磁石部とを備えて互いの対抗面を同極性に着磁し該磁気力により軸方向のず れを防止する永久磁石ブロックを設けるとともに、永久磁石からなる回転子の回 転角を検出して固定子の磁極を同極性に制御するレゾルバ機構を組込んだ永久磁 石形同期モータを前記回転軸に配置した磁気軸受装置が提供される。 In order to achieve the above object, according to the present invention, in a magnetic bearing device for holding a rotating shaft in a non-contact manner by utilizing the repulsive force of magnetic poles of the same polarity, the rotating shaft has a rotating magnet part and a fixed magnet part. A permanent magnet block is provided that magnetizes the opposing surfaces to have the same polarity to prevent axial displacement due to the magnetic force, and detects the rotation angle of the rotor composed of permanent magnets. Provided is a magnetic bearing device in which a permanent magnet type synchronous motor incorporating a resolver mechanism for controlling the magnetic poles to the same polarity is arranged on the rotating shaft.
【０００７】[0007]
回転軸に回転磁石部と固定磁石部とを備えた永久磁石ブロックと、レゾルバを 組込んだ永久磁石形同期モータとを配置し、前者の永久磁石ブロックの両磁石部 の対抗面を同極性に着磁して軸方向のずれを防止するとともに、後者の永久磁石 形同期モータのレゾルバの働きにより回転子の磁極位置に対応する固定子の磁極 性を常に同極性に制御して固定子の内部に浮上させ、回転部分を非接触を図って 機械損を減少させる。 A permanent magnet block that has a rotating magnet section and a fixed magnet section on the rotating shaft, and a permanent magnet type synchronous motor with a resolver installed are placed so that the opposing surfaces of both magnet sections of the former permanent magnet block have the same polarity. It is magnetized to prevent axial displacement, and the latter's resolver of the permanent magnet type synchronous motor works to constantly control the magnetic poles of the stator corresponding to the magnetic pole position of the rotor to be the same polarity, and It is levitated and the rotating part is made non-contact to reduce mechanical loss.
【０００８】[0008]
つぎに本考案の実施例について図面を用いて詳細に説明する。 Next, an embodiment of the present invention will be described in detail with reference to the drawings.
【０００９】 図１は本考案にかかる磁気軸受装置の第１の実施例の構成を示す説明図である 。FIG. 1 is an explanatory view showing the configuration of a first embodiment of a magnetic bearing device according to the present invention.
【００１０】 同図において、１は永久磁石形同期モータで、１１はその永久磁石からなる回 転子、１２は回転軸、１３はコイルの巻回された固定子であり、回転子１１には 隣接してレゾルバ１４が組み込まれ、回転子の回転角を検出して固定子１３の磁 極と回転子１１とが常に同一極性となるように変換制御し、これら固定子、回転 子間の磁気力が互いに反発するように構成されている。したがって回転子１１の 外周は固定子１３の内壁に接触することがないため、回転軸１２は中心軸位置に 保持される。In the figure, 1 is a permanent magnet type synchronous motor, 11 is a rotor composed of the permanent magnet, 12 is a rotating shaft, 13 is a stator with a coil wound, and the rotor 11 has A resolver 14 is installed adjacently to detect the rotation angle of the rotor and control the conversion so that the magnetic poles of the stator 13 and the rotor 11 always have the same polarity. The forces are configured to repel each other. Therefore, the outer circumference of the rotor 11 does not come into contact with the inner wall of the stator 13, so that the rotary shaft 12 is held at the central axis position.
【００１１】 ２は永久磁石ブロックで、回転軸１２に取付けられた円盤状の回転磁石部２１ と、該回転磁石部２１を挟んで対応するリング状の固定磁石部２２，２３との３ 個の強力な保磁力および残留磁気力を備えた永久磁石材によって形成されている 。そして固定磁石部２２および２３はそれぞれリング状の内周部分と外周部分と が異極となるように、図示のように着磁されており、また回転磁石部２１は隣接 する固定磁石部２２や２３の極性に応じて同極性となるように４分割されて着磁 されている。したがって、永久磁石ブロック２においては、回転磁石部２１は一 対の固定磁石部２２および２３の間にて隣接して対面する磁極間に働く強力な反 発力により、左右のいずれにも接触することなく両者の中間位置を保つように構 成されている。Reference numeral 2 denotes a permanent magnet block, which is composed of a disk-shaped rotary magnet portion 21 attached to the rotary shaft 12 and three ring-shaped fixed magnet portions 22 and 23 that sandwich the rotary magnet portion 21. It is made of permanent magnet material with strong coercive force and residual magnetic force. The fixed magnet portions 22 and 23 are magnetized as shown so that the ring-shaped inner peripheral portion and outer peripheral portion have different polarities, respectively, and the rotary magnet portion 21 is adjacent to the adjacent fixed magnet portions 22 and 23. The magnets are divided into four parts and magnetized so as to have the same polarity according to the polarity of 23. Therefore, in the permanent magnet block 2, the rotating magnet portion 21 comes into contact with either the left or right side due to the strong repulsive force acting between the magnetic poles that are adjacent and facing each other between the pair of fixed magnet portions 22 and 23. It is configured to maintain an intermediate position between the two.
【００１２】 つぎに、このように構成された第１の実施例の作動を説明すると、回転軸１２ はレゾルバ１４を内蔵した永久磁石形同期モータ１と、その左右方向の永久磁石 ブロック２，２とを備えており、前者の永久磁石形同期モータ１はレゾルバ１４ により回転子１１の磁極位置を検出して固定子１３の磁極が常に同一極性となる ように制御されるため、回転子１１は相反発する磁気力により浮上って固定子１ ３との間の非接触が保たれることになる。Next, the operation of the first embodiment configured as described above will be described. The rotary shaft 12 includes a permanent magnet type synchronous motor 1 having a resolver 14 built-in, and permanent magnet blocks 2 and 2 in the left and right directions thereof. Since the former permanent magnet type synchronous motor 1 is controlled by the resolver 14 to detect the magnetic pole position of the rotor 11 so that the magnetic poles of the stator 13 always have the same polarity, the rotor 11 is Due to the repulsive magnetic forces, it floats and the non-contact with the stator 13 is maintained.
【００１３】 一方、後者の左右の永久磁石ブロック２，２は一組の固定磁石部２２，２３の 間に回転磁石部２１が配置され、さらにそれぞれの着磁が前述のように隣接して 対面する磁石間はすべて同極性とされているために互いの反発力によって回転磁 石部２１は固定磁石部２２および２３の中間位置に保持されることになり、前者 の回転子１１の浮上力と相俟って回転軸１２はすべてに非接触となり、機械損か ら免れることになる。On the other hand, in the latter left and right permanent magnet blocks 2 and 2, the rotary magnet portion 21 is arranged between a pair of fixed magnet portions 22 and 23, and the respective magnetized portions are adjacent to each other as described above. Since the magnets to be magnetized are all of the same polarity, the revolving force causes the rotating magnet portion 21 to be held at an intermediate position between the fixed magnet portions 22 and 23, which corresponds to the levitation force of the rotor 11 in the former case. Therefore, the rotary shaft 12 is not in contact with everything, and is protected from mechanical loss.
【００１４】 図２は本考案の第２の実施例を示す説明図、図３はその第３の実施例を示す説 明図で、前述の第１の実施例における部分と同一の部分については同一の符号を つけ、その説明は省略する。FIG. 2 is an explanatory view showing a second embodiment of the present invention, and FIG. 3 is an explanatory view showing a third embodiment thereof, in which the same parts as those in the above-mentioned first embodiment are shown. The same reference numerals are given and the description thereof is omitted.
【００１５】 そして図２において、２４はリング磁石で、その内径は前述の回転磁石部２１ の外径に対し、僅かな間隙を有するように形成され、回転磁石部２１と対応時に は対面する磁極に対して同一極性となるように、厚さ方向に分割されて着磁され 、固定磁石部２２，２３と同様に筐体などに固定されている。In FIG. 2, reference numeral 24 denotes a ring magnet, the inner diameter of which is formed so as to have a slight gap with respect to the outer diameter of the rotating magnet portion 21 described above, and the magnetic pole which faces the rotating magnet portion 21 when facing the rotating magnet portion 21. The magnets are divided and magnetized in the thickness direction so that they have the same polarity, and are fixed to the housing or the like like the fixed magnet portions 22 and 23.
【００１６】 このため、リング磁石２４のない第１の実施例に比し、回転磁石部２１の部分 の回転軸１２のブレが少ない非接触軸受が得られることになる。Therefore, as compared with the first embodiment in which the ring magnet 24 is not provided, a non-contact bearing in which the rotary shaft 12 in the rotary magnet portion 21 has less deviation is obtained.
【００１７】 つぎに図３において、２５は非磁性体からなる接続部で、リング磁石２４と左 右の固定磁石部２２および２３とを一体に接続するものである。したがって第２ の実施例と同様にブレの少ない非接触軸受が得られるもので、さらに固定側の磁 石ブロックが接続部２５により一体化されているため、安定化された非接触軸受 が得られることになる。Next, in FIG. 3, reference numeral 25 denotes a connecting portion made of a non-magnetic material, which integrally connects the ring magnet 24 and the left and right fixed magnet portions 22 and 23. Therefore, as in the second embodiment, a non-contact bearing with less blurring can be obtained, and since the fixed-side magnet block is integrated by the connecting portion 25, a stabilized non-contact bearing can be obtained. It will be.
【００１８】 以上、本考案を上述の実施例によって説明したが、本考案の主旨の範囲内で種 々の変形が可能であり、これらの変形を本考案の範囲から排除するものではない 。Although the present invention has been described with reference to the above embodiments, various modifications can be made within the scope of the present invention, and these modifications are not excluded from the scope of the present invention.
【００１９】[0019]
上述の実施例のように本考案によれば、回転軸にレゾルバを組み込んで常に固 定子の磁極を回転子の磁極と同極性に制御する永久磁石形同期モータと、永久磁 石の反発力を利用した永久磁石ブロックを左右にそれぞれ配置したので、永久磁 石形同期モータによって回転軸は浮上力が得られるとともに、永久磁石ブロック により軸方向のブレが防止できて非接触の磁気軸受が得られ、したがって機械損 が低減されて高速回転のモータの効率の向上が図れる効果がある。 According to the present invention as in the above-mentioned embodiment, the resolver is incorporated in the rotary shaft to constantly control the magnetic pole of the stator to the same polarity as the magnetic pole of the rotor, and the repulsive force of the permanent magnet. Since the used permanent magnet blocks are arranged on the left and right respectively, the permanent magnet synchronous motor can provide the levitation force to the rotating shaft, and the permanent magnet block can prevent axial deviation and can provide a non-contact magnetic bearing. Therefore, the mechanical loss is reduced, and the efficiency of the high-speed rotation motor can be improved.
【図１】本考案にかかる磁気軸受装置の第１の実施例の
構成を示す説明図である。FIG. 1 is an explanatory diagram showing a configuration of a first embodiment of a magnetic bearing device according to the present invention.
【図２】本考案の第２の実施例を示す説明図である。FIG. 2 is an explanatory view showing a second embodiment of the present invention.
【図３】本考案の第３の実施例を示す説明図である。FIG. 3 is an explanatory view showing a third embodiment of the present invention.
１…永久磁石形同期モータ ２…永久磁石ブロック １１…回転子 １２…回転軸 １３…固定子 １４…レゾルバ ２１…回転磁石部 ２２…固定磁石部 ２３…固定磁石部 DESCRIPTION OF SYMBOLS 1 ... Permanent magnet type synchronous motor 2 ... Permanent magnet block 11 ... Rotor 12 ... Rotating shaft 13 ... Stator 14 ... Resolver 21 ... Rotating magnet part 22 ... Fixed magnet part 23 ... Fixed magnet part
Claims (1)
非接触に保持する磁気軸受装置において、前記回転軸に
回転磁石部と固定磁石部とを備えて互いの対抗面を同極
性に着磁し該磁気力により軸方向のずれを防止する永久
磁石ブロックを設けるとともに、永久磁石からなる回転
子の回転角を検出して固定子の磁極を同極性に制御する
レゾルバ機構を組込んだ永久磁石形同期モータを前記回
転軸に配置したことを特徴とする磁気軸受装置。1. A magnetic bearing device for holding a rotating shaft in a non-contact manner by utilizing the repulsive force of magnetic poles of the same polarity, wherein the rotating shaft is provided with a rotating magnet portion and a fixed magnet portion, and their opposing surfaces are the same. A resolver mechanism that magnetizes the polarities and provides a permanent magnet block that prevents axial displacement due to the magnetic force, and that detects the rotation angle of the rotor composed of permanent magnets and controls the magnetic poles of the stator to have the same polarity is assembled. A magnetic bearing device in which a built-in permanent magnet type synchronous motor is arranged on the rotary shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6975191U JPH0514640U (en) | 1991-08-06 | 1991-08-06 | Magnetic bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6975191U JPH0514640U (en) | 1991-08-06 | 1991-08-06 | Magnetic bearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0514640U true JPH0514640U (en) | 1993-02-26 |
Family
ID=13411816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6975191U Pending JPH0514640U (en) | 1991-08-06 | 1991-08-06 | Magnetic bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0514640U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011160103A1 (en) * | 2010-06-19 | 2011-12-22 | Aronstam Peter S | Double -direction thrust magnetic bearing with repulsive magnets |
| JP2018009644A (en) * | 2016-07-14 | 2018-01-18 | マツダ株式会社 | Magnetic bearing rotating electric machine and manufacturing method of magnetic bearing rotating electric machine |
| JPWO2017158710A1 (en) * | 2016-03-15 | 2018-03-29 | 株式会社ナカダクリエイト | Flywheel device and rotating electric machine |
| JP2018078801A (en) * | 2018-02-07 | 2018-05-17 | 株式会社ナカダクリエイト | Rotary electric machine |
| JP2023149593A (en) * | 2022-03-31 | 2023-10-13 | ダイキン工業株式会社 | Drive system, turbo compressor, and refrigeration device |
-
1991
- 1991-08-06 JP JP6975191U patent/JPH0514640U/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011160103A1 (en) * | 2010-06-19 | 2011-12-22 | Aronstam Peter S | Double -direction thrust magnetic bearing with repulsive magnets |
| GB2494836A (en) * | 2010-06-19 | 2013-03-20 | Peter S Aronstam | Double-direction thrust magnetic bearing with repulsive magnets |
| JPWO2017158710A1 (en) * | 2016-03-15 | 2018-03-29 | 株式会社ナカダクリエイト | Flywheel device and rotating electric machine |
| JP2018009644A (en) * | 2016-07-14 | 2018-01-18 | マツダ株式会社 | Magnetic bearing rotating electric machine and manufacturing method of magnetic bearing rotating electric machine |
| JP2018078801A (en) * | 2018-02-07 | 2018-05-17 | 株式会社ナカダクリエイト | Rotary electric machine |
| JP2023149593A (en) * | 2022-03-31 | 2023-10-13 | ダイキン工業株式会社 | Drive system, turbo compressor, and refrigeration device |
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