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JPH1169742A - Automatic core aligner for permanent magnet generator - Google Patents

Automatic core aligner for permanent magnet generator

Info

Publication number
JPH1169742A
JPH1169742A JP23050997A JP23050997A JPH1169742A JP H1169742 A JPH1169742 A JP H1169742A JP 23050997 A JP23050997 A JP 23050997A JP 23050997 A JP23050997 A JP 23050997A JP H1169742 A JPH1169742 A JP H1169742A
Authority
JP
Japan
Prior art keywords
permanent magnet
rotor
stator
magnet generator
bearing
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
Application number
JP23050997A
Other languages
Japanese (ja)
Inventor
Takeshi Ubusawa
猛 生澤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP23050997A priority Critical patent/JPH1169742A/en
Publication of JPH1169742A publication Critical patent/JPH1169742A/en
Pending legal-status Critical Current

Links

Landscapes

  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain an automatic core aligner for permanent magnet generator in which the cores of rotor and stator in a permanent magnet generator for exciting an electric rotating machine can be aligned automatically. SOLUTION: When the rotor 1 of a permanent magnet generator disposed at the end of the shaft system of an electric rotating machine is elongated due to elongation/contraction of a rotor shaft during operation of the electric rotating machine, the bearing 6 of a stator is moved in the axial direction by the magnetic attraction between the permanent magnet 2 of the rotor 1 and the stator core 3. The stator of the permanent magnet generator follows up the movement to move in the axial direction thus aligning the cores of the rotor and stator in the permanent magnet generator.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、回転電機の励磁用
として用いられる永久磁石発電機の回転子と固定子との
磁心を自動的に合わせるための永久磁石発電機の自動磁
心合わせ装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic magnetic core aligning apparatus for a permanent magnet generator for automatically aligning a magnetic core of a rotor and a stator of a permanent magnet generator used for exciting a rotating electric machine.

【0002】[0002]

【従来の技術】例えば、ブラシレスタービン発電機のよ
うな大型の回転電機の励磁装置には永久磁石発電機が用
いられる。すなわち、回転電機の回転軸の軸端に永久磁
石発電機を取り付け、その永久磁石発電機で発電された
電流を整流して回転電機の界磁巻線に供給するようにし
ている。
2. Description of the Related Art For example, a permanent magnet generator is used for an exciting device of a large rotating electric machine such as a brushless turbine generator. That is, a permanent magnet generator is attached to the end of the rotating shaft of the rotating electric machine, and the current generated by the permanent magnet generator is rectified and supplied to the field winding of the rotating electric machine.

【0003】この永久磁石発電機の回転子には永久磁石
が取り付けられており、その回転子は回転電機の軸端に
取り付けられる。そして、永久磁石発電機の固定子巻線
に生じた電流を調節して、その電流を励磁機の界磁巻線
に導き励磁機電機子に電流を生ぜしめ、整流のして回転
電機本体の回転子の界磁電流としている。
[0003] A permanent magnet is attached to a rotor of the permanent magnet generator, and the rotor is attached to a shaft end of the rotating electric machine. Then, the current generated in the stator winding of the permanent magnet generator is adjusted, and the current is guided to the field winding of the exciter to generate a current in the exciter armature. It is the field current of the rotor.

【0004】このようなブラシレスタービン発電機等の
回転電機においては、回転軸の回転遠心力による軸縮み
や軸温度上昇による軸伸びが発生する。回転電機の運転
時においては、通常、後者の影響の方が大きい。つま
り、起動時には一時的な軸縮みが発生し運転時には軸伸
びが発生する。このため、軸端に取り付けられた永久磁
石発電機の回転子は、軸方向に対して数mm〜20mm
程度移動し、固定子との磁心のずれが生じる。
[0004] In such a rotating electric machine such as a brushless turbine generator, the shaft shrinks due to the rotational centrifugal force of the rotating shaft and the shaft elongates due to an increase in the shaft temperature. During operation of the rotating electric machine, the latter influence is usually greater. That is, temporary shaft contraction occurs at the time of startup, and shaft extension occurs during operation. For this reason, the rotor of the permanent magnet generator attached to the shaft end is several mm to 20 mm in the axial direction.
To a certain extent, and the magnetic core is shifted from the stator.

【0005】そこで、この回転子と固定子との磁心のず
れを吸収するために、図3に示すように、永久磁石発電
機の固定子鉄心3の長さを回転子1の永久磁石2の軸方
向長さよりも長くして、回転子1の移動によっても永久
磁石2が固定子鉄心3の範囲から飛び出さない様にして
いる。なお、固定子鉄心3には固定子巻線4が取り付け
られている。
Therefore, in order to absorb the displacement of the magnetic core between the rotor and the stator, as shown in FIG. 3, the length of the stator core 3 of the permanent magnet generator is changed to the length of the permanent magnet 2 of the rotor 1. The length is set longer than the axial length so that the permanent magnet 2 does not jump out of the range of the stator core 3 even when the rotor 1 moves. Note that a stator winding 4 is attached to the stator core 3.

【0006】また、図4に示すように、回転子と固定子
との磁心のずれを吸収するために、逆に回転子1の永久
磁石2の軸方向長さを永久磁石発電機の固定子鉄心3の
長さ長よりも長くして回転子1が移動しても固定子鉄心
3が永久磁石2の範囲内にあるようにしていた。
On the other hand, as shown in FIG. 4, the axial length of the permanent magnet 2 of the rotor 1 is conversely changed in order to absorb the deviation of the magnetic core between the rotor and the stator. The length of the core 3 is longer than the length of the core 3 so that the stator core 3 is within the range of the permanent magnet 2 even when the rotor 1 moves.

【0007】[0007]

【発明が解決しようとする課題】しかしながら、図3に
示すような固定子鉄心3の長さに余裕を持たせる設計で
は、固定子巻線4も長くなり抵抗が増大する。また、図
4に示すような回転子1の永久磁石2の軸方向長さに余
裕を持たせる設計では、端部漏れ磁束が増大するので、
固定子鉄心3の端部温度が高くなるという欠点が有り性
能設計上の制約となっていた。
However, in a design in which the length of the stator core 3 has a margin as shown in FIG. 3, the stator winding 4 becomes longer and the resistance increases. Further, in a design in which the axial length of the permanent magnet 2 of the rotor 1 has a margin as shown in FIG. 4, end leakage magnetic flux increases.
There is a drawback that the temperature at the end of the stator core 3 becomes high, which is a constraint on performance design.

【0008】また、上記の様な設計上の寸法関係により
軸伸び差を吸収しきれない場合の対策として、永久磁石
発電機の固定子の位置を定格運転時の回転子1の磁心位
置近くに合わせておき、ユニット起動時には発電機本体
に直結されたタービンの温度上昇による軸伸びを待って
励磁するなどの運用上の対策をとっていた。この場合に
は励磁するタイミングの制約が生ずることになる。
As a countermeasure against the case where the difference in axial elongation cannot be completely absorbed due to the dimensional relationship in design as described above, the position of the stator of the permanent magnet generator is set close to the magnetic core position of the rotor 1 during rated operation. In addition, at the time of starting the unit, operational measures were taken, such as energizing after waiting for shaft elongation due to temperature rise of the turbine directly connected to the generator body. In this case, the timing of the excitation is restricted.

【0009】そこで、本発明の目的は、回転電機の励磁
用として用いられる永久磁石発電機の回転子と固定子と
の磁心を自動的に合わせることができる永久磁石発電機
の自動磁心合わせ装置を得ることである。
Accordingly, an object of the present invention is to provide an automatic magnetic core aligning apparatus for a permanent magnet generator, which can automatically align the magnetic cores of a rotor and a stator of a permanent magnet generator used for exciting a rotating electric machine. Is to get.

【0010】[0010]

【課題を解決するための手段】請求項1の発明に係わる
永久磁石発電機の自動磁心合わせ装置は、回転電機の励
磁用として回転電機軸系の軸端に設けられた永久磁石発
電機の回転子の軸方向に設けられたレールと、永久磁石
発電機の固定子に取り付けられ回転子の永久磁石と固定
子鉄心との磁気吸引力によりレールに案内されて回転子
と固定子との磁心が一致するように固定子を移動させる
軸受とを備えたものである。
According to the first aspect of the present invention, there is provided an automatic magnetic centering apparatus for a permanent magnet generator, which is provided at a shaft end of a rotating electrical machine shaft system for exciting a rotating electrical machine. The rail provided in the axial direction of the rotor and the magnet attached to the stator of the permanent magnet generator are guided by the rail by the magnetic attraction force of the permanent magnet of the rotor and the stator core, and the magnetic core of the rotor and the stator is And a bearing for moving the stator so as to coincide with each other.

【0011】請求項1の発明に係わる永久磁石発電機の
自動磁心合わせ装置では、回転電機の運転時に生ずる回
転子軸の伸び縮みにより回転電機軸系の軸端に設けられ
た永久磁石発電機の回転子が軸方向に伸びた場合、回転
子の永久磁石と固定子鉄心との磁気吸引力により固定子
の軸受がレールに沿って軸方向に移動する。これによ
り、永久磁石発電機の固定子が追従して軸方向に移動
し、永久磁石発電機の回転子及び固定子の磁心が一致す
る。
In the automatic magnetic core alignment apparatus for a permanent magnet generator according to the first aspect of the present invention, the permanent magnet generator provided at the shaft end of the rotating electrical machine shaft system due to expansion and contraction of the rotor shaft generated during operation of the rotating electrical machine. When the rotor extends in the axial direction, the bearing of the stator moves in the axial direction along the rail due to the magnetic attraction between the permanent magnet of the rotor and the stator core. As a result, the stator of the permanent magnet generator follows and moves in the axial direction, and the rotor and stator cores of the permanent magnet generator match.

【0012】請求項2の発明に係わる永久磁石発電機の
自動磁心合わせ装置は、回転電機の励磁用として回転電
機軸系の軸端に設けられた永久磁石発電機の支持台に取
り付けられ永久磁石発電機の回転子の軸方向に設けられ
たレールと、永久磁石発電機の固定子に取り付けられレ
ールに案内されて固定子を移動させる軸受と、回転子の
位置を検出する位置検出器と、回転子の位置に基づいて
回転子の磁心と固定子の磁心とのずれ量を算出する演算
手段と、演算手段で演算されたずれ量に基づいて回転子
と固定子との磁心が一致するように軸受をレールに沿っ
て移動させる駆動装置とを備えたものである。
According to a second aspect of the present invention, there is provided an automatic magnetic centering apparatus for a permanent magnet generator, which is mounted on a support of a permanent magnet generator provided at a shaft end of a rotating electrical machine shaft system for exciting a rotating electrical machine. A rail provided in the axial direction of the rotor of the generator, a bearing attached to the stator of the permanent magnet generator and guided by the rail to move the stator, and a position detector for detecting the position of the rotor, Calculating means for calculating the amount of deviation between the magnetic core of the rotor and the magnetic core of the stator based on the position of the rotor; and adjusting the magnetic cores of the rotor and the stator based on the amount of deviation calculated by the calculating means. And a drive device for moving the bearings along the rails.

【0013】請求項2の発明に係わる永久磁石発電機の
自動磁心合わせ装置は、回転子の位置検出器の出力に従
って、演算手段は駆動装置を駆動して軸受をレールに沿
って動かし、回転子と固定子との磁心が一致するように
永久磁石発電機の固定子の軸方向位置を調整する。
According to a second aspect of the present invention, there is provided an automatic magnetic centering apparatus for a permanent magnet generator, wherein the arithmetic means drives a driving device to move a bearing along a rail in accordance with an output of a rotor position detector. The axial position of the stator of the permanent magnet generator is adjusted so that the magnetic cores of the permanent magnet and the stator match.

【0014】請求項3の発明に係わる永久磁石発電機の
自動磁心合わせ装置は、請求項2の発明において、位置
検出器としては、非接触で回転子の位置を検出する光セ
ンサ、またはサーチコイルによる磁気センサを用いたも
のである。
According to a third aspect of the present invention, there is provided an automatic magnetic centering apparatus for a permanent magnet generator according to the second aspect of the present invention, wherein the position detector is an optical sensor or a search coil for detecting the position of the rotor in a non-contact manner. Using a magnetic sensor according to the present invention.

【0015】請求項3の発明に係わる永久磁石発電機の
自動磁心合わせ装置では、請求項2の発明の作用に加
え、光センサまたはサーチコイルによる磁気センサに
て、非接触で回転子の位置を検出する。
In the automatic core alignment apparatus for a permanent magnet generator according to a third aspect of the present invention, in addition to the function of the second aspect, the position of the rotor can be determined in a non-contact manner by an optical sensor or a magnetic sensor using a search coil. To detect.

【0016】請求項4の発明に係わる永久磁石発電機の
自動磁心合わせ装置は、請求項2の発明において、駆動
装置は、演算手段からの指令に基づいて動作する位置決
めモータと、位置決めモータの回転力を直線方向の力に
変換しレールに沿って軸受を駆動する軸受駆動シャフト
とから構成される。
According to a fourth aspect of the present invention, there is provided an automatic magnetic centering apparatus for a permanent magnet generator, wherein the driving device comprises: a positioning motor which operates based on a command from a calculating means; And a bearing drive shaft that converts the force into a linear force and drives the bearing along the rail.

【0017】請求項4の発明に係わる永久磁石発電機の
自動磁心合わせ装置では、請求項2の発明の作用に加
え、演算手段からの指令に基づいて回転子と固定子との
磁心のずれ量が無くなるように位置決めモータを回転さ
せ、軸受駆動シャフトは位置決めモータの回転力を直線
方向の力に変換しレールに沿って軸受を駆動する。これ
により、固定子を移動させ回転子と固定子との磁心を一
致させる。
According to a fourth aspect of the present invention, there is provided an automatic magnetic core aligning apparatus for a permanent magnet generator, wherein in addition to the operation of the second aspect, the amount of deviation of the magnetic core between the rotor and the stator is determined based on a command from the arithmetic means. The positioning motor is rotated so that the rotation is eliminated, and the bearing drive shaft converts the rotational force of the positioning motor into a linear force and drives the bearing along the rail. As a result, the stator is moved so that the magnetic cores of the rotor and the stator match.

【0018】請求項5の発明に係わる永久磁石発電機
は、請求項2の発明において、駆動装置は、演算手段か
らの指令に基づいて歯車を回転させる位置決めモータ
と、歯車と係合し歯車の回転力を直線方向の力に変換し
レールに沿って軸受を駆動する軸受駆動シャフトとから
構成されている。
According to a fifth aspect of the present invention, in the permanent magnet generator according to the second aspect of the present invention, the driving device comprises: a positioning motor for rotating the gear based on a command from the arithmetic means; And a bearing drive shaft that converts the rotational force into a linear force and drives the bearing along the rail.

【0019】請求項5の発明に係わる永久磁石発電機の
自動磁心合わせ装置は、請求項2の発明の作用に加え、
演算手段からの指令に基づいて回転子と固定子との磁心
のずれ量が無くなるように位置決めモータを回転させ、
位置決めモータにより回転した歯車は軸受駆動シャフト
と係合し、歯車の回転力を直線方向の力に変換しレール
に沿って軸受を駆動する。これにより、固定子を移動さ
せ回転子と固定子との磁心を一致させる。
The automatic core alignment apparatus for a permanent magnet generator according to the fifth aspect of the present invention has the function of the second aspect of the invention.
Based on a command from the calculating means, rotate the positioning motor so as to eliminate the amount of deviation of the magnetic core between the rotor and the stator,
The gear rotated by the positioning motor engages the bearing drive shaft, converts the rotational force of the gear into a linear force, and drives the bearing along the rail. As a result, the stator is moved so that the magnetic cores of the rotor and the stator match.

【0020】[0020]

【発明の実施の形態】以下、本発明の実施の形態を説明
する。図1は本発明の第1の実施の形態を示す構成図で
ある。回転電機がブラシレスタービン発電機の場合に
は、タービン、発電機、励磁機、永久磁石発電機の順に
直結され、タービン側の軸端に回転子軸系全体の軸方向
位置を決めるスラスト軸受が設けられている。そして、
回転電機軸系の軸端には、回転電機の励磁用として永久
磁石発電機が設けられている。
Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram showing a first embodiment of the present invention. When the rotating electric machine is a brushless turbine generator, a thrust bearing that directly connects the turbine, generator, exciter, and permanent magnet generator in this order is provided at the shaft end on the turbine side to determine the axial position of the entire rotor shaft system. Have been. And
At the shaft end of the rotating electric machine shaft system, a permanent magnet generator is provided for exciting the rotating electric machine.

【0021】永久磁石発電機の回転子1には永久磁石2
が取り付けられており、回転子1が回転することにより
回転磁界を発生させる。つまり、回転子1に取り付けら
れた永久磁石2により回転磁界が発生し、その磁束変化
を固定子鉄心3が受け固定子巻線4に電流を発生させ
る。これにより、回転電機の界磁電流を発生させるよう
にしている。
The rotor 1 of the permanent magnet generator has a permanent magnet 2
Are attached, and a rotating magnetic field is generated when the rotor 1 rotates. That is, a rotating magnetic field is generated by the permanent magnet 2 attached to the rotor 1, and the change in the magnetic flux is received by the stator core 3 to generate an electric current in the stator winding 4. Thus, a field current of the rotating electric machine is generated.

【0022】また、永久磁石発電機の回転子1の軸方向
にはレール5が設けられており、固定子を軸受6で支持
している。すなわち、この軸受6は永久磁石発電機の固
定子に取り付けられ、回転子1の永久磁石2と固定子鉄
心3との磁気吸引力により、レール5に案内されて回転
子と固定子との磁心が一致するように固定子を移動させ
る。
A rail 5 is provided in the axial direction of the rotor 1 of the permanent magnet generator, and the stator is supported by bearings 6. That is, the bearing 6 is attached to the stator of the permanent magnet generator, and is guided by the rail 5 by the magnetic attraction between the permanent magnet 2 of the rotor 1 and the stator core 3 so that the magnetic core between the rotor and the stator is formed. Move the stator so that matches.

【0023】すなわち、回転電機の回転軸系において
は、回転軸の回転遠心力による軸縮みや軸温度上昇によ
る軸伸びが発生する。一般に、この軸方向の回転子1の
ずれ量は数mm〜20mm程度である。いま、永久磁石
発電機の回転子1が軸方向に伸びたとした場合には、回
転子1の永久磁石2と固定子鉄心3との磁気吸引力によ
り、固定子の軸受6がレール5に沿って軸方向に移動す
る。従って、永久磁石発電機の固定子が回転子1の動き
に追従して軸方向に移動し、永久磁石発電機の回転子及
び固定子の磁心が一致するようになる。
That is, in the rotating shaft system of the rotating electric machine, shaft contraction due to the rotating centrifugal force of the rotating shaft and shaft elongation due to an increase in the shaft temperature occur. Generally, the amount of displacement of the rotor 1 in the axial direction is about several mm to 20 mm. Now, if the rotor 1 of the permanent magnet generator is extended in the axial direction, the magnetic attraction between the permanent magnet 2 of the rotor 1 and the stator core 3 causes the bearing 6 of the stator to move along the rail 5. To move in the axial direction. Therefore, the stator of the permanent magnet generator moves in the axial direction following the movement of the rotor 1, so that the rotor and the stator of the permanent magnet generator coincide with each other.

【0024】この場合、レール5と軸受6との間の摩擦
抵抗が充分小さいことが条件となるので、摩擦抵抗が所
定値より小さくなるようにする。例えば、固定子鉄心3
の重量の一部ないし全部を磁気浮上装置により支えてレ
ール5と軸受6との摩擦抵抗を減少させたり、レール5
及び軸受6に磁気浮上式のものを採用して、レール5と
軸受6との摩擦抵抗を減少させる。これにより、確実に
永久磁石2と固定子鉄心3との磁気吸引力により、固定
子鉄心3は永久磁石2の軸方向位置変化に自動追従でき
る。
In this case, since the condition is that the frictional resistance between the rail 5 and the bearing 6 is sufficiently small, the frictional resistance is set to be smaller than a predetermined value. For example, stator core 3
A part or all of the weight of the rail 5 is supported by a magnetic levitation device to reduce the frictional resistance between the rail 5 and the bearing 6,
In addition, a magnetic levitation type is adopted as the bearing 6 to reduce frictional resistance between the rail 5 and the bearing 6. Thereby, the stator core 3 can automatically follow the axial position change of the permanent magnet 2 by the magnetic attraction between the permanent magnet 2 and the stator core 3.

【0025】このように、第1の実施の形態では、永久
磁石発電機の固定子の移動方法として、回転子の軸方向
のみに移動可能な1自由度を持つ転がり軸受6とレール
5を設け、回転子1の永久磁石2と固定子鉄心3との磁
気吸引力により、固定子の軸受6がレール5に沿って軸
方向に移動するようにしているので、回転子1が移動し
たとしても永久磁石発電機の回転子及び固定子の磁心を
一致させることができる。
As described above, in the first embodiment, as a method of moving the stator of the permanent magnet generator, the rolling bearing 6 and the rail 5 having one degree of freedom that can move only in the axial direction of the rotor are provided. Since the magnetic bearing between the permanent magnet 2 of the rotor 1 and the stator core 3 causes the bearing 6 of the stator to move in the axial direction along the rail 5, even if the rotor 1 moves. The magnetic cores of the rotor and the stator of the permanent magnet generator can be matched.

【0026】次に、本発明の第2の実施の形態を説明す
る。図2は本発明の第2の実施の形態を示す構成図であ
る。この第2の実施の形態は、図1に示した第1の実施
の形態に対し、回転子1の位置を検出する位置検出器7
と、回転子1の位置に基づいて回転子1の磁心と固定子
の磁心とのずれ量を算出する演算手段10と、演算手段
10で演算されたずれ量に基づいて回転子1と固定子と
の磁心が一致するように軸受6をレール5に沿って移動
させる駆動装置11とを備えたものである。
Next, a second embodiment of the present invention will be described. FIG. 2 is a configuration diagram showing a second embodiment of the present invention. This second embodiment is different from the first embodiment shown in FIG. 1 in that a position detector 7 for detecting the position of the rotor 1 is provided.
Calculating means 10 for calculating a shift amount between the magnetic core of the rotor 1 and the magnetic core of the stator based on the position of the rotor 1; and a rotor 1 and a stator based on the shift amount calculated by the calculating means 10. And a driving device 11 for moving the bearing 6 along the rail 5 so that the magnetic cores of the bearings coincide with each other.

【0027】図2では、駆動装置11は、演算手段10
からの指令に基づいて歯車8を回転させる位置決めモー
タ12と、歯車12と係合し歯車12の回転力を直線方
向の力に変換しレール5に沿って軸受6を駆動する軸受
駆動シャフト9とから構成されたものを示している。
In FIG. 2, the driving device 11 includes
And a bearing drive shaft 9 that engages with the gear 12 to convert the rotational force of the gear 12 into a linear force and drives the bearing 6 along the rail 5. Are shown.

【0028】第1の実施の形態では、レール5と軸受6
との間の摩擦抵抗が充分小さいことが条件となっている
が、その摩擦抵抗に関係なく永久磁石発電機の回転子と
固定子との磁心を一致できるようにすべく、駆動装置1
1にて軸受6を駆動し固定子を移動させる。すなわち、
固定子鉄心3をレール5及び軸方向に可動な軸受6によ
り、回転軸方向のみに可動であるように支持する。
In the first embodiment, the rail 5 and the bearing 6
It is required that the frictional resistance between the rotor and the stator of the permanent magnet generator be identical regardless of the frictional resistance.
In step 1, the bearing 6 is driven to move the stator. That is,
The stator core 3 is supported by a rail 5 and a bearing 6 movable in the axial direction so as to be movable only in the rotation axis direction.

【0029】そして、回転子1の位置を位置検出器7に
よって非接触で検出し、演算手段10は検出された回転
子1の位置に基づいて回転子と固定子との磁心のずれ量
を演算する。そして、そのずれ量を補正するように位置
決めモータ12を駆動する。これによって、歯車8が回
転しその回転力は軸受駆動シャフト9に対する直線力に
変換され軸受6を駆動する。これにより、固定子鉄心3
の軸方向位置を回転子1の永久磁石2に合うように調整
する。
Then, the position of the rotor 1 is detected by the position detector 7 in a non-contact manner, and the calculating means 10 calculates the amount of deviation of the magnetic core between the rotor and the stator based on the detected position of the rotor 1. I do. Then, the positioning motor 12 is driven so as to correct the shift amount. As a result, the gear 8 rotates, and the rotational force is converted into a linear force on the bearing drive shaft 9 to drive the bearing 6. Thereby, the stator core 3
Of the rotor 1 is adjusted to match the permanent magnet 2 of the rotor 1.

【0030】ここで、位置検出器7としては、非接触で
回転子1の位置が検出できるものを用いる。例えば、サ
ーチコイルを使用した磁気センサによるギャップ計を用
いることもできるし、光学センサを用いてもよい。
Here, as the position detector 7, a detector capable of detecting the position of the rotor 1 in a non-contact manner is used. For example, a gap meter using a magnetic sensor using a search coil may be used, or an optical sensor may be used.

【0031】また、駆動装置11としては、上述の歯車
8に代えて、位置決めモータ12からの回転力をベルト
により軸受駆動シャフト9に伝達し、その回転量に応じ
た直線移動量を得られるようにしても良い。また、軸受
駆動シャフト9として油圧シリンダを用いても良い。こ
の場合、油圧シリンダは位置決めモータ12からの回転
量を直線移動量に変換することになる。
The driving device 11 transmits the rotational force from the positioning motor 12 to the bearing driving shaft 9 by a belt instead of the gear 8 described above, so that a linear movement amount corresponding to the rotation amount can be obtained. You may do it. Further, a hydraulic cylinder may be used as the bearing drive shaft 9. In this case, the hydraulic cylinder converts the rotation amount from the positioning motor 12 into a linear movement amount.

【0032】このように、駆動装置11は、演算手段2
0からの指令に基づいて動作する位置決めモータ12
と、位置決めモータ12の回転力を直線方向の力に変換
しレール5に沿って軸受を駆動する軸受駆動シャフト9
とから構成される。
As described above, the driving device 11 includes the arithmetic unit 2
Positioning motor 12 that operates based on a command from 0
And a bearing drive shaft 9 that converts the rotational force of the positioning motor 12 into a linear force and drives the bearing along the rail 5.
It is composed of

【0033】第2の実施の形態では、永久磁石発電機の
固定子の軸方向位置が回転子の位置に追従して動くよう
な構成とし、回転子の位置を位置検出器で検出し、その
位置検出器の出力に応じて演算手段10は固定子の位置
を駆動装置11で移動させるようにしている。従って、
永久磁石発電機の固定子は、レール5と軸受6との間の
摩擦抵抗の大きさに関係なく、回転子1に自動追従して
軸方向に移動し、固定子鉄心3の軸方向位置を回転子1
の永久磁石2の磁心に合うように調整できる。
In the second embodiment, the configuration is such that the axial position of the stator of the permanent magnet generator moves following the position of the rotor, and the position of the rotor is detected by a position detector. The calculating means 10 moves the position of the stator by the driving device 11 according to the output of the position detector. Therefore,
The stator of the permanent magnet generator moves in the axial direction automatically following the rotor 1 irrespective of the magnitude of the frictional resistance between the rail 5 and the bearing 6, and moves the axial position of the stator core 3. Rotor 1
Can be adjusted to match the magnetic core of the permanent magnet 2.

【0034】[0034]

【発明の効果】以上述べたように、永久磁石発電機の固
定子鉄心は回転子の永久磁石の軸方向位置変化に追従し
て軸方向位置を自動調整できるので、回転子の永久磁石
又は固定子鉄心の軸方向長さに冗長性を持たせる必要も
無く、最適設計の永久磁石発電機を採用できる。また、
回転電機を起動する際に励磁開始時期の制約も必要なく
なる。
As described above, the stator core of the permanent magnet generator can automatically adjust the axial position following the change of the axial position of the permanent magnet of the rotor. There is no need to provide redundancy in the axial length of the iron core, and a permanent magnet generator with an optimal design can be adopted. Also,
When the rotating electric machine is started, there is no need to restrict the excitation start time.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の第1の実施の形態を示す構成図。FIG. 1 is a configuration diagram showing a first embodiment of the present invention.

【図2】本発明の第2の実施の形態を示す構成図。FIG. 2 is a configuration diagram showing a second embodiment of the present invention.

【図3】固定子鉄心を大きく形成した従来の永久磁石発
電機の説明図。
FIG. 3 is an explanatory view of a conventional permanent magnet generator in which a stator core is formed large.

【図4】永久磁石を大きく形成した従来の永久磁石発電
機の説明図。
FIG. 4 is an explanatory view of a conventional permanent magnet generator having a large permanent magnet.

【符号の説明】[Explanation of symbols]

1 回転子 2 永久磁石 3 固定子鉄心 4 固定子巻線 5 レール 6 軸受 7 位置検出器 8 歯車 9 軸受駆動用シャフト 10 演算手段 11 駆動装置 12 位置決めモータ DESCRIPTION OF SYMBOLS 1 Rotor 2 Permanent magnet 3 Stator iron core 4 Stator winding 5 Rail 6 Bearing 7 Position detector 8 Gear 9 Bearing drive shaft 10 Calculation means 11 Drive device 12 Positioning motor

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 回転電機の励磁用として前記回転電機軸
系の軸端に設けられた前記永久磁石発電機の回転子の軸
方向に設けられたレールと、前記永久磁石発電機の固定
子に取り付けられ前記回転子の永久磁石と前記固定子鉄
心との磁気吸引力により前記レールに案内されて前記回
転子と前記固定子との磁心が一致するように前記固定子
を移動させる軸受とを備えた永久磁石発電機の自動磁心
合わせ装置。
1. A rail provided in an axial direction of a rotor of the permanent magnet generator provided at a shaft end of a shaft system of the rotating electric machine for exciting a rotating electric machine, and a stator of the permanent magnet generator. A bearing that is mounted and guided by the rail by magnetic attraction between the permanent magnet of the rotor and the stator core, and moves the stator so that the cores of the rotor and the stator match. Automatic core alignment device for permanent magnet generators.
【請求項2】 回転電機の励磁用として前記回転電機軸
系の軸端に設けられた永久磁石発電機の支持台に取り付
けられ前記永久磁石発電機の回転子の軸方向に設けられ
たレールと、前記永久磁石発電機の固定子に取り付けら
れ前記レールに案内されて前記固定子を移動させる軸受
と、前記回転子の位置を検出する位置検出器と、前記回
転子の位置に基づいて前記回転子の磁心と前記固定子の
磁心とのずれ量を算出する演算手段と、前記演算手段で
演算されたずれ量に基づいて前記回転子と前記固定子と
の磁心が一致するように前記軸受を前記レールに沿って
移動させる駆動装置とを備えたことを特徴とする永久磁
石発電機の自動磁心合わせ装置。
2. A rail attached to a support of a permanent magnet generator provided at a shaft end of the rotating electrical machine shaft system for exciting the rotating electrical machine and provided in an axial direction of a rotor of the permanent magnet generator. A bearing attached to a stator of the permanent magnet generator to move the stator guided by the rail, a position detector for detecting a position of the rotor, and the rotation based on a position of the rotor. Calculating means for calculating a shift amount between the magnetic core of the stator and the magnetic core of the stator; andthe bearing so that the magnetic cores of the rotor and the stator match based on the shift amount calculated by the calculating means. And a drive device for moving the permanent magnet generator along the rail.
【請求項3】 前記位置検出器は、非接触で前記回転子
の位置を検出する光センサ、またはサーチコイルによる
磁気センサであることを特徴とする請求項2に記載の永
久磁石発電機の自動磁心合わせ装置。
3. The automatic permanent magnet generator according to claim 2, wherein the position detector is an optical sensor that detects the position of the rotor in a non-contact manner or a magnetic sensor using a search coil. Magnetic core alignment device.
【請求項4】 前記駆動装置は、前記演算手段からの指
令に基づいて動作する位置決めモータと、前記位置決め
モータの回転力を直線方向の力に変換し前記レールに沿
って前記軸受を駆動する軸受駆動シャフトとからなるこ
とを特徴とする請求項2に記載の永久磁石発電機の自動
磁心合わせ装置。
4. A driving device comprising: a positioning motor that operates based on a command from the arithmetic unit; and a bearing that converts a rotational force of the positioning motor into a linear force and drives the bearing along the rail. The automatic core alignment apparatus for a permanent magnet generator according to claim 2, comprising a drive shaft.
【請求項5】 前記駆動装置は、前記演算手段からの指
令に基づいて歯車を回転させる位置決めモータと、前記
歯車と係合し前記歯車の回転力を直線方向の力に変換し
前記レールに沿って前記軸受を駆動する軸受駆動シャフ
トとからなることを特徴とする請求項2に記載の永久磁
石発電機の自動磁心合わせ装置。
5. A driving device comprising: a positioning motor that rotates a gear based on a command from the arithmetic unit; and a driving motor that engages with the gear and converts a rotational force of the gear into a linear force, and moves along the rail. The automatic core alignment apparatus for a permanent magnet generator according to claim 2, further comprising a bearing drive shaft for driving the bearing.
JP23050997A 1997-08-13 1997-08-13 Automatic core aligner for permanent magnet generator Pending JPH1169742A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23050997A JPH1169742A (en) 1997-08-13 1997-08-13 Automatic core aligner for permanent magnet generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23050997A JPH1169742A (en) 1997-08-13 1997-08-13 Automatic core aligner for permanent magnet generator

Publications (1)

Publication Number Publication Date
JPH1169742A true JPH1169742A (en) 1999-03-09

Family

ID=16908880

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23050997A Pending JPH1169742A (en) 1997-08-13 1997-08-13 Automatic core aligner for permanent magnet generator

Country Status (1)

Country Link
JP (1) JPH1169742A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009088512A (en) * 2007-09-27 2009-04-23 Nikon Corp Exposure apparatus
CN103001340A (en) * 2012-11-13 2013-03-27 西安巨舟电子设备有限公司 Floatable magnetic feed stator and permanent magnet speed reducing device based on same
US20160365760A1 (en) * 2015-06-15 2016-12-15 Hyundai Motor Company Motor structure for variable counter electromotive force

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009088512A (en) * 2007-09-27 2009-04-23 Nikon Corp Exposure apparatus
CN103001340A (en) * 2012-11-13 2013-03-27 西安巨舟电子设备有限公司 Floatable magnetic feed stator and permanent magnet speed reducing device based on same
US20160365760A1 (en) * 2015-06-15 2016-12-15 Hyundai Motor Company Motor structure for variable counter electromotive force
CN106253617A (en) * 2015-06-15 2016-12-21 现代自动车株式会社 Electric motor structure for variable counter electromotive force
US10050504B2 (en) * 2015-06-15 2018-08-14 Hyundai Motor Company Motor structure for variable counter electromotive force

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