FI120477B - Arrangemang för att skydda en elmotor - Google Patents

Arrangemang för att skydda en elmotor Download PDF

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Publication number
FI120477B
FI120477B FI20060861A FI20060861A FI120477B FI 120477 B FI120477 B FI 120477B FI 20060861 A FI20060861 A FI 20060861A FI 20060861 A FI20060861 A FI 20060861A FI 120477 B FI120477 B FI 120477B
Authority
FI
Finland
Prior art keywords
thermistor
power converter
circuit
motor
monitoring
Prior art date
Application number
FI20060861A
Other languages
English (en)
Finnish (fi)
Other versions
FI20060861A0 (sv
FI20060861A (sv
Inventor
Paavo Merilinna
Kimmo Rajakangas
Hans Carlsson
Original Assignee
Vacon Oyj
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=37067184&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI120477(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Vacon Oyj filed Critical Vacon Oyj
Priority to FI20060861A priority Critical patent/FI120477B/sv
Publication of FI20060861A0 publication Critical patent/FI20060861A0/sv
Priority to EP07075785.1A priority patent/EP1906504B1/en
Priority to US11/902,156 priority patent/US7928679B2/en
Publication of FI20060861A publication Critical patent/FI20060861A/sv
Application granted granted Critical
Publication of FI120477B publication Critical patent/FI120477B/sv

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/25—Devices for sensing temperature, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
    • H02H7/0852—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load directly responsive to abnormal temperature by using a temperature sensor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/008—Intrinsically safe circuits

Claims (5)

1. Arrangemang för termistorövervakning av en växelströmsmotor som styrs av en effektomvandlare (200), sasom en frekvensomriktare, med 5 ätminstone en termistor (202) som övervakar motorns (201) temperatur, omfattande en effektomvandlare (200) som styr en växelströmsmotor (201) försedd med en termistor (202), vilken effektomvandlare omfattar ett effektsteg (203) och en styrenhet (204), 10 kännetecknat av att den i motorn belägna termistorns ingängskrets är direkt integrerad i effektomvandlaren (200), sasom en frekvensomriktare, utan separat termistorrelä eller annat yttre styrrelä för termistorn, 15 vilken ingängskrets är försedd med en säkerhetskrets (s.k. Safe Stop-krets) (208) som uppfyller kraven i myndighetsbestämmelser och standarder och förhindrar frekvensomriktaren att starta oväntat samt stoppar den pa ett säkert sätt. 20
2. Arrangemang enligt patentkrav 1 för termistorövervakning, kännetecknat av, att termistorns ingängskrets via en OR-krets (206) är förbunden med en enligt tillämpliga standarder och/eller bestämmelser godkänd säkerhetskrets. 25
3. Arrangemang enligt patentkrav 2 för termistorövervakning, kännetecknat av, att säkerhetskretsen är anordnad att förhindra styrning av effektomvandlarens halvledarelkopplare, t.ex. IGBT, sä att termistoringängen kopplas tili säkerhetskretsen som förhindrar oavsiktlig start 30 och/eller stopp av styrningen av effektomvandlarens halvledarelkopplare.
4. Arrangemang enligt nägot av de föregäende patentkraven för termistorövervakning, kännetecknat av, att det är placerat pä ett eller flera kretskort i effektomvandlaren. 35
5. Arrangemang enligt nägot av de föregäende patentkraven för termistorövervakning, kännetecknat av, att det är placerat i effektomvandlarens styrenhet, effektsteg eller i bäda.
FI20060861A 2006-09-27 2006-09-27 Arrangemang för att skydda en elmotor FI120477B (sv)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI20060861A FI120477B (sv) 2006-09-27 2006-09-27 Arrangemang för att skydda en elmotor
EP07075785.1A EP1906504B1 (en) 2006-09-27 2007-09-11 Protection arrangement of an electric motor
US11/902,156 US7928679B2 (en) 2006-09-27 2007-09-19 Protection arrangement of an electric motor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20060861A FI120477B (sv) 2006-09-27 2006-09-27 Arrangemang för att skydda en elmotor
FI20060861 2006-09-27

Publications (3)

Publication Number Publication Date
FI20060861A0 FI20060861A0 (sv) 2006-09-27
FI20060861A FI20060861A (sv) 2008-03-28
FI120477B true FI120477B (sv) 2009-10-30

Family

ID=37067184

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20060861A FI120477B (sv) 2006-09-27 2006-09-27 Arrangemang för att skydda en elmotor

Country Status (3)

Country Link
US (1) US7928679B2 (sv)
EP (1) EP1906504B1 (sv)
FI (1) FI120477B (sv)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102420417B (zh) * 2011-12-21 2014-01-15 芜湖天宇科技开发有限公司 一种绕线式电机保护器及其保护方法
CN102513377B (zh) * 2011-12-31 2015-01-28 太原重工股份有限公司 三辊连轧管机的电机监测系统
CN104852356B (zh) * 2014-02-17 2018-09-21 伊顿公司 电动机的控制保护装置
US9722415B2 (en) * 2015-07-20 2017-08-01 Dresser, Inc. Regulating temperature on an actuator
DE102017127966A1 (de) * 2017-11-27 2019-05-29 Kriwan Industrie-Elektronik Gmbh Motorschutzgerät und Verfahren zur Überwachung eines Elektromotors
FR3093251A1 (fr) * 2019-02-22 2020-08-28 Moteurs Leroy-Somer Variateur de vitesse utilisable en atmosphère explosive

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4266257A (en) 1978-10-02 1981-05-05 Johnson Controls, Inc. Motor over-heating protection circuit
US4954923A (en) * 1988-08-19 1990-09-04 Cooper Industries, Inc. Intrinsic safety module interface
JPH0336985A (ja) 1989-06-30 1991-02-18 Mitsubishi Electric Corp 電動送風機
US5061884A (en) 1990-02-12 1991-10-29 Kb Electronics, Inc. Current limiting control circuit for D.C. motors with line dropout protection
DE4010049C1 (en) 1990-03-29 1991-10-10 Grundfos International A/S, Bjerringbro, Dk Pump unit for heating or cooling circuit - uses frequency regulator to reduce rotation of pump motor upon detected overheating
US5585025A (en) * 1993-09-13 1996-12-17 Softub, Inc. SPA control circuit
JPH0787602A (ja) * 1993-09-17 1995-03-31 Matsushita Electric Ind Co Ltd 電気自動車の保護装置
JPH08219058A (ja) * 1995-02-09 1996-08-27 Matsushita Electric Ind Co Ltd 密閉型電動圧縮機
US5841648A (en) * 1997-05-29 1998-11-24 Micro Motion, Inc. Adjustable voltage converter utilizing a charge pump
JPH11239688A (ja) 1998-02-26 1999-09-07 Matsushita Electric Ind Co Ltd 洗濯機
US6111738A (en) * 1998-05-22 2000-08-29 Diagnostic Instruments Ltd. Intrinsically safe circuits
US6468042B2 (en) 1999-07-12 2002-10-22 Danfoss Drives A/S Method for regulating a delivery variable of a pump
JP3994029B2 (ja) 2002-05-30 2007-10-17 アスモ株式会社 モータ制御装置及び空調装置用モータ
DE10261454B4 (de) 2002-12-31 2010-04-08 Danfoss Drives A/S Motorsteuerung mit sicherem Halt
US8540493B2 (en) 2003-12-08 2013-09-24 Sta-Rite Industries, Llc Pump control system and method

Also Published As

Publication number Publication date
EP1906504B1 (en) 2016-03-23
EP1906504A3 (en) 2011-11-16
FI20060861A0 (sv) 2006-09-27
FI20060861A (sv) 2008-03-28
US20080074069A1 (en) 2008-03-27
EP1906504A2 (en) 2008-04-02
US7928679B2 (en) 2011-04-19

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