KR960030515A - Active magnetic bearing system - Google Patents

Active magnetic bearing system Download PDF

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Publication number
KR960030515A
KR960030515A KR1019950001218A KR19950001218A KR960030515A KR 960030515 A KR960030515 A KR 960030515A KR 1019950001218 A KR1019950001218 A KR 1019950001218A KR 19950001218 A KR19950001218 A KR 19950001218A KR 960030515 A KR960030515 A KR 960030515A
Authority
KR
South Korea
Prior art keywords
magnetic bearing
permanent magnet
switching device
brake coil
bearing system
Prior art date
Application number
KR1019950001218A
Other languages
Korean (ko)
Inventor
신명호
Original Assignee
이형도
삼성전기 주식회사
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 이형도, 삼성전기 주식회사 filed Critical 이형도
Priority to KR1019950001218A priority Critical patent/KR960030515A/en
Priority to GB9512187A priority patent/GB2297361B/en
Priority to JP7157331A priority patent/JPH08200365A/en
Priority to FR9507924A priority patent/FR2729723B1/en
Publication of KR960030515A publication Critical patent/KR960030515A/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • 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
    • F16C32/044—Active magnetic bearings
    • F16C32/0442—Active magnetic bearings with devices affected by abnormal, undesired or non-standard conditions such as shock-load, power outage, start-up or touchdown
    • 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
    • F16C39/00—Relieving load on bearings
    • F16C39/02—Relieving load on bearings using mechanical means

Abstract

본 발명은 능동 자기 베어링 시스템에 관한 것이다.The present invention relates to an active magnetic bearing system.

본 발명은 축을 지지하는 자기 베어링과, 그 자기 베어링을 보호하기 위한 보조 베어링을 구비하는 능동자기 베어링 시스템에 있어서, 상기 축에는 영구자석이 설치되고, 그 영구자석의 자속에 의한 기전력 유기를 위해 브레이크 코일이 상기 영구자석 둘레에 설치되며, 상기 브레이크 코일은 저항소자 및 소정의 스위칭 장치와 페회로를 구성하고, 상기 스위칭 장치는 비상 사태를 검출하는 비상검출회로부의 작동으로 동작할 수 있도록 구성되어 있다.The present invention relates to an active magnetic bearing system having a magnetic bearing supporting a shaft and an auxiliary bearing for protecting the magnetic bearing, wherein the shaft is provided with a permanent magnet, and brakes for electromotive force induced by the magnetic flux of the permanent magnet. A coil is installed around the permanent magnet, the brake coil constitutes a closed circuit with a resistance element and a predetermined switching device, and the switching device is configured to operate by an operation of an emergency detection circuit unit for detecting an emergency. .

따라서, 회전체의 높은 회전관성 에너지를 브레이크 코일과 폐회로를 구성하고 있는 저항소자에서 소비시킴으로써 회전체의 속도를 급격히 감속시켜 보조 베어링의 부담을 줄일 수 있고, 정전과 같은 비상사태 발생시 회전체의 속도를 신속회 감속시켜 보조베어링을 보호함으로써 결국, 자기 베어링의 수명을 연장할 수 있는 장점이 있다.Therefore, the high rotational inertia energy of the rotor can be consumed by the brake coil and the resistive elements constituting the closed loop, thereby rapidly reducing the rotor's speed and reducing the burden on the auxiliary bearings. By decelerating quickly to protect the secondary bearing, there is an advantage in that it can extend the life of the magnetic bearing.

Description

능동 자기 베어링 시스템Active magnetic bearing system

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명에 따른 능동 자기 베어링 시스템의 일실시예를 개략적으로 나타내 보인 정면도, 제3도는 제2도에 도시된 능동 자기 베어링 시스템의 브레이크의 측면도, 제4도는 본 발명에 따른 능동 자기 베어링 시스템의 다른 실시예를 개략적으로 나타내 보인 브레이크의 측면도.2 is a front view schematically showing an embodiment of an active magnetic bearing system according to the present invention, FIG. 3 is a side view of the brake of the active magnetic bearing system shown in FIG. 2, and FIG. 4 is an active magnetic bearing according to the present invention. Side view of a brake schematically showing another embodiment of a bearing system.

Claims (2)

축을 비접촉으로 부상시켜 지지하기 위한 자기 베어링과, 그 자기 베어링을 보호하기 위한 보조 베어링을 구비하여 된 능동 자기 베어링 시스템에 있어서, 상기 축의 소정 부위에는 적어도 한 개의 영구자석이 설치되고, 그 영구자석으로부터의 자속에 의한 기전력 유기를 위해 적어도 한 개의 브레이크 코일이 상기 영구자석과 소정 간격 이격되어 대향 설치되며, 상기 브레이크 코일은 코일에 유기된 기전력에 의한 전기 에너지를 소모하기 위한 저항소자 및 소정의 스위칭 장치와 폐회로를 구성하고, 상기 스위칭 장치는 정전 등과 같은 비상사태를 검출하는 비상검출회로부의 작동으로 동작할 수 있도록 구성되어 있는 것을 특징으로 하는 능동 자기 베어링 시스템.In an active magnetic bearing system comprising a magnetic bearing for supporting a shaft in a noncontact manner and an auxiliary bearing for protecting the magnetic bearing, at least one permanent magnet is provided at a predetermined portion of the shaft, and the permanent magnet is disposed from the permanent magnet. At least one brake coil is disposed to face the permanent magnet at a predetermined interval so as to induce electromotive force by the magnetic flux of the magnetic flux. The brake coil is a resistor and a predetermined switching device for consuming electrical energy by electromotive force induced in the coil. And a closed circuit, wherein the switching device is configured to operate by operation of an emergency detection circuit unit for detecting an emergency such as a power failure. 제1항에 있어서, 상기 영구자석의 둘레에는 그 내주면에 소정 높이를 가지는 복수의 돌출부를 가지는 요크가 설치되고, 상기 복수의 돌출부에는 상기 브레이크 코일이 권취되어 있는 것을 특징으로 하는 능동 자기 베어링 시스템.2. The active magnetic bearing system according to claim 1, wherein a yoke having a plurality of protrusions having a predetermined height is provided on an inner circumferential surface of the periphery of the permanent magnet, and the brake coil is wound around the plurality of protrusions. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950001218A 1995-01-24 1995-01-24 Active magnetic bearing system KR960030515A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019950001218A KR960030515A (en) 1995-01-24 1995-01-24 Active magnetic bearing system
GB9512187A GB2297361B (en) 1995-01-24 1995-06-15 Active magnetic bearing system
JP7157331A JPH08200365A (en) 1995-01-24 1995-06-23 Active magnetic bearing system
FR9507924A FR2729723B1 (en) 1995-01-24 1995-06-30 ACTIVE MAGNETIC BEARING SYSTEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950001218A KR960030515A (en) 1995-01-24 1995-01-24 Active magnetic bearing system

Publications (1)

Publication Number Publication Date
KR960030515A true KR960030515A (en) 1996-08-17

Family

ID=19407168

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950001218A KR960030515A (en) 1995-01-24 1995-01-24 Active magnetic bearing system

Country Status (4)

Country Link
JP (1) JPH08200365A (en)
KR (1) KR960030515A (en)
FR (1) FR2729723B1 (en)
GB (1) GB2297361B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100280754B1 (en) * 1997-12-17 2001-03-02 윤종용 Magnetic bearing module with spare bearing

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US7608951B2 (en) * 2006-10-13 2009-10-27 Honeywell International Inc. Fully redundant spacecraft power and attitude control system
WO2010108544A2 (en) 2009-03-26 2010-09-30 Abb Ab Bearing assembly
DE102009022835B3 (en) * 2009-05-27 2011-03-03 Schaeffler Kg Method for monitoring the condition of a backup bearing of a machine
KR101291577B1 (en) * 2011-11-23 2013-08-16 (주)대주기계 Magnet bearing system
NO337234B1 (en) * 2013-05-29 2016-02-15 Aker Subsea As Rotary underwater machine with fault-tolerant active magnetic storage
US10208760B2 (en) 2016-07-28 2019-02-19 General Electric Company Rotary machine including active magnetic bearing
EP3327299A1 (en) * 2016-11-23 2018-05-30 Forsnetics AB Fail-safe system for the controlled discharge of an electromagnet of a thrust magnetic bearing
CN110566582B (en) * 2019-09-24 2023-11-14 珠海格力电器股份有限公司 Magnetic bearing control method, magnetic bearing and magnetic bearing system
FI128586B (en) * 2019-10-03 2020-08-14 Spindrive Oy A magnetic actuator for a magnetic suspension system
CN112253525B (en) * 2020-10-13 2021-10-08 珠海格力电器股份有限公司 Protection device for magnetic suspension compressor and magnetic suspension compressor

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US3929390A (en) * 1971-12-22 1975-12-30 Cambridge Thermionic Corp Damper system for suspension systems
JPS6055838A (en) * 1983-08-31 1985-04-01 Ntn Toyo Bearing Co Ltd Brake controller of magnetic bearing using vacuum rotary machine
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JPS6117715A (en) * 1984-07-04 1986-01-25 Hitachi Ltd Control method and device for electro-magnetic bearing
US4732353A (en) * 1985-11-07 1988-03-22 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Three axis attitude control system
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GB2234560B (en) * 1989-08-04 1993-08-18 Glacier Metal Co Ltd A magnetic bearing shaft assembly having a bearing to support the shaft in the event of failure of the magnetic bearing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100280754B1 (en) * 1997-12-17 2001-03-02 윤종용 Magnetic bearing module with spare bearing

Also Published As

Publication number Publication date
FR2729723B1 (en) 1999-06-04
GB2297361A (en) 1996-07-31
FR2729723A1 (en) 1996-07-26
JPH08200365A (en) 1996-08-06
GB2297361B (en) 1998-11-25
GB9512187D0 (en) 1995-08-16

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