IT1250893B - Dispositivo elettronico di frenaggio per motori asincroni. - Google Patents

Dispositivo elettronico di frenaggio per motori asincroni.

Info

Publication number
IT1250893B
IT1250893B ITTO911034A ITTO911034A IT1250893B IT 1250893 B IT1250893 B IT 1250893B IT TO911034 A ITTO911034 A IT TO911034A IT TO911034 A ITTO911034 A IT TO911034A IT 1250893 B IT1250893 B IT 1250893B
Authority
IT
Italy
Prior art keywords
circuit
asynchronous motors
magnetic suspensions
electric current
brake device
Prior art date
Application number
ITTO911034A
Other languages
English (en)
Inventor
Emilio Capetti
Original Assignee
Varian Spa
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 Varian Spa filed Critical Varian Spa
Priority to ITTO911034A priority Critical patent/IT1250893B/it
Publication of ITTO911034A0 publication Critical patent/ITTO911034A0/it
Priority to EP92202830A priority patent/EP0549004A1/en
Priority to US07/993,936 priority patent/US5376867A/en
Publication of ITTO911034A1 publication Critical patent/ITTO911034A1/it
Application granted granted Critical
Publication of IT1250893B publication Critical patent/IT1250893B/it

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
    • F16C32/044—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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/02—Multi-stage pumps
    • F04D19/04—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
    • F04D19/042—Turbomolecular vacuum pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/02—Multi-stage pumps
    • F04D19/04—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
    • F04D19/048—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps comprising magnetic bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0292—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
    • 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
    • F16C32/0444—Details of devices to control the actuation of the electromagnets
    • F16C32/0457—Details of the power supply to the electromagnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
    • H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an AC motor
    • 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
    • F16C2360/00—Engines or pumps
    • F16C2360/44—Centrifugal pumps
    • F16C2360/45—Turbo-molecular pumps
    • 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)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Stopping Of Electric Motors (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Non-Positive Displacement Air Blowers (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

La presente invenzione concerne un dispositivo elettronico di frenaggio, particolarmente per motori asincroni dotati di sospensioni magnetiche, quali quelli utilizzati in pompe turbomolecolari, comprendente un circuito di recupero dell'energia cinetica di rotazione del rotore durante la fase di decelerazione per mancanza di corrente elettrica di alimentazione di rete, atti a restituire una corrente elettrica utilizzabile per l'alimentazione di emergenza delle sospensioni magnetiche (8).Detto circuito potendo comprendere inoltre una batteria ausiliaria (10) di alimentazione del circuito (9) di controllo delle sospensioni magnetiche (8) durante la fase finale del ciclo di arresto del rotore del motore (5) per mancanza di corrente di rete.(Fig. 1)
ITTO911034A 1991-12-24 1991-12-24 Dispositivo elettronico di frenaggio per motori asincroni. IT1250893B (it)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ITTO911034A IT1250893B (it) 1991-12-24 1991-12-24 Dispositivo elettronico di frenaggio per motori asincroni.
EP92202830A EP0549004A1 (en) 1991-12-24 1992-09-16 An electronic braking device for asynchronous motors
US07/993,936 US5376867A (en) 1991-12-24 1992-12-18 Electronic braking device for asynchronous motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO911034A IT1250893B (it) 1991-12-24 1991-12-24 Dispositivo elettronico di frenaggio per motori asincroni.

Publications (3)

Publication Number Publication Date
ITTO911034A0 ITTO911034A0 (it) 1991-12-24
ITTO911034A1 ITTO911034A1 (it) 1993-06-24
IT1250893B true IT1250893B (it) 1995-04-21

Family

ID=11409834

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO911034A IT1250893B (it) 1991-12-24 1991-12-24 Dispositivo elettronico di frenaggio per motori asincroni.

Country Status (3)

Country Link
US (1) US5376867A (it)
EP (1) EP0549004A1 (it)
IT (1) IT1250893B (it)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4410903A1 (de) * 1994-03-29 1995-10-05 Leybold Ag System mit Vakuumpumpe, Meßgerät sowie Versorgungs-, Steuer-, Bedienungs- und Anzeigeeinrichtungen
GB9408959D0 (en) * 1994-05-05 1994-06-22 Boc Group Plc Magnetic bearing circuitry
CA2151532C (en) * 1994-07-25 1998-12-22 Emerson Electric Co. Auxiliary starting switched reluctance motor
US5703456A (en) * 1995-05-26 1997-12-30 Emerson Electric Co. Power converter and control system for a motor using an inductive load and method of doing the same
FI952908A7 (fi) * 1995-06-13 1997-02-17 High Speed Tech Ltd Oy Magneettilaakeroidun sähkökoneen energiansiirtojärjestelmä
US5866964A (en) * 1996-01-29 1999-02-02 Emerson Electric Company Reluctance machine with auxiliary field excitations
US5923142A (en) * 1996-01-29 1999-07-13 Emerson Electric Co. Low cost drive for switched reluctance motor with DC-assisted excitation
US5780949A (en) * 1996-01-29 1998-07-14 Emerson Electric Co. Reluctance machine with auxiliary field excitations
JPH09247973A (ja) * 1996-03-13 1997-09-19 Ebara Corp 磁気軸受を用いたモータの停止方法
FR2747431B1 (fr) * 1996-04-15 1998-07-03 Soc D Mecanique Magnetique Pompe turbomoleculaire a paliers magnetiques actifs
JP3708728B2 (ja) * 1998-11-05 2005-10-19 日創電機株式会社 射出成形機のモータ駆動装置
JP3753923B2 (ja) 2000-04-21 2006-03-08 株式会社荏原製作所 磁気軸受制御装置
KR100488523B1 (ko) * 2003-02-14 2005-05-11 삼성전자주식회사 모터제어장치 및 그 제어방법
EP1779503A2 (fr) * 2004-07-05 2007-05-02 Moteurs Leroy-Somer Redresseur et systeme de controle de la vitesse d'un moteur electrique.
FR2881297B1 (fr) * 2005-01-27 2007-05-18 Schneider Toshiba Inverter Procede et systeme de gestion de la tension sur le bus continu d'un variateur de vitesse pour moteur electrique
US7456594B2 (en) 2006-06-09 2008-11-25 Honeywell International Inc. Electric motor brake engagement holdup system
DE102006041183A1 (de) * 2006-09-01 2008-03-06 Oerlikon Leybold Vacuum Gmbh Vakuumpumpe
DE102007044690A1 (de) * 2007-09-19 2009-04-02 Oerlikon Leybold Vacuum Gmbh Vakuumpumpe
GB2486884A (en) * 2010-12-22 2012-07-04 Waukesha Bearings Ltd A magnetic bearing drive circuit driven from a pair of Direct Current link voltage rails
FR2974412B1 (fr) * 2011-04-21 2013-06-07 Adixen Vacuum Products Procede de controle d'un detecteur de fuites et detecteur de fuites
CN112152185B (zh) * 2020-10-20 2022-02-01 珠海格力电器股份有限公司 一种磁悬浮系统的供电控制装置、方法和磁悬浮系统

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995204A (en) * 1974-12-20 1976-11-30 General Electric Company Braking mode control for an electric traction motor
US4039914A (en) * 1975-11-25 1977-08-02 General Electric Company Dynamic braking in controlled current motor drive systems
US4143309A (en) * 1977-04-11 1979-03-06 Patterson Williams G Turbomolecular pump drive method and apparatus
JPS5866598A (ja) * 1981-10-13 1983-04-20 Mitsubishi Electric Corp 交流エレベ−タの駆動装置
DE3210354C2 (de) * 1982-03-20 1985-07-18 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar Antrieb für Turbomolekularpumpen
JPS5923098A (ja) * 1982-07-30 1984-02-06 Hitachi Ltd タ−ボ分子ポンプ
JPS60190697A (ja) * 1984-03-09 1985-09-28 Seiko Seiki Co Ltd タ−ボ分子ポンプにおける磁気軸受の制御方式
JPS62243987A (ja) * 1986-04-16 1987-10-24 Mitsubishi Electric Corp 真空装置の非常電源装置
US4831469A (en) * 1987-07-29 1989-05-16 International Business Machines Corporation Disk drive head retract and motor braking method and apparatus
SE461947B (sv) * 1988-08-08 1990-04-09 Digimoto Of Sweden Ab Foerfarande foer bromsning av en asynkronmotor
JPH03124283A (ja) * 1989-10-04 1991-05-27 Mitsubishi Electric Corp 電動機駆動装置の回生制御回路

Also Published As

Publication number Publication date
ITTO911034A0 (it) 1991-12-24
US5376867A (en) 1994-12-27
ITTO911034A1 (it) 1993-06-24
EP0549004A1 (en) 1993-06-30

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Effective date: 19971023