USB511886I5 - - Google Patents

Info

Publication number
USB511886I5
USB511886I5 US51188674A USB511886I5 US B511886 I5 USB511886 I5 US B511886I5 US 51188674 A US51188674 A US 51188674A US B511886 I5 USB511886 I5 US B511886I5
Authority
US
United States
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
Other languages
English (en)
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 filed Critical
Priority to US05/511,886 priority Critical patent/US3989991A/en
Priority to AU84997/75A priority patent/AU503362B2/en
Priority to CA236,407A priority patent/CA1096043A/fr
Priority to BR7506356*A priority patent/BR7506356A/pt
Priority to BE1006920A priority patent/BE834105A/fr
Priority to ES441467A priority patent/ES441467A1/es
Priority to FR7530392A priority patent/FR2287130A1/fr
Priority to IT41705/75A priority patent/IT1050986B/it
Priority to JP11902875A priority patent/JPS5626239B2/ja
Publication of USB511886I5 publication Critical patent/USB511886I5/en
Application granted granted Critical
Publication of US3989991A publication Critical patent/US3989991A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • 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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/08—Controlling based on slip frequency, e.g. adding slip frequency and speed proportional frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
US05/511,886 1974-10-03 1974-10-03 Method and circuit for the derivation of an analog slip frequency signal of an induction motor in a tachometerless motor drive Expired - Lifetime US3989991A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US05/511,886 US3989991A (en) 1974-10-03 1974-10-03 Method and circuit for the derivation of an analog slip frequency signal of an induction motor in a tachometerless motor drive
AU84997/75A AU503362B2 (en) 1974-10-03 1975-09-19 Deriving analogue slip frequency signal of induction motor
CA236,407A CA1096043A (fr) 1974-10-03 1975-09-25 Systeme de commande des moteurs
BE1006920A BE834105A (fr) 1974-10-03 1975-10-01 Methode d'obtention d'un signal analogique de glissement de frequence d'un moteur a induction, et excitation de moteur sans tachymeire mettant en oevre ladite methode
BR7506356*A BR7506356A (pt) 1974-10-03 1975-10-01 Processo de determinacao de frequencia de deslizamento,e aparelhamento de acionamento a motor de inducao com velocidade variavel
ES441467A ES441467A1 (es) 1974-10-03 1975-10-02 Aparatos de accionamientos por motor de induccion.
FR7530392A FR2287130A1 (fr) 1974-10-03 1975-10-03 Methode d'obtention d'un signal analogique de glissement de frequence d'un moteur a induction, et excitation de moteur sans tachymetre mettant en oeuvre ladite methode
IT41705/75A IT1050986B (it) 1974-10-03 1975-10-03 Apparecchiatura di azionamento di motore a induzione senza tachimetro
JP11902875A JPS5626239B2 (fr) 1974-10-03 1975-10-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/511,886 US3989991A (en) 1974-10-03 1974-10-03 Method and circuit for the derivation of an analog slip frequency signal of an induction motor in a tachometerless motor drive

Publications (2)

Publication Number Publication Date
USB511886I5 true USB511886I5 (fr) 1976-02-03
US3989991A US3989991A (en) 1976-11-02

Family

ID=24036863

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/511,886 Expired - Lifetime US3989991A (en) 1974-10-03 1974-10-03 Method and circuit for the derivation of an analog slip frequency signal of an induction motor in a tachometerless motor drive

Country Status (9)

Country Link
US (1) US3989991A (fr)
JP (1) JPS5626239B2 (fr)
AU (1) AU503362B2 (fr)
BE (1) BE834105A (fr)
BR (1) BR7506356A (fr)
CA (1) CA1096043A (fr)
ES (1) ES441467A1 (fr)
FR (1) FR2287130A1 (fr)
IT (1) IT1050986B (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4088934A (en) * 1976-10-04 1978-05-09 General Electric Company Means for stabilizing an a-c electric motor drive system
JPS5388113A (en) * 1977-01-11 1978-08-03 Toshiba Corp Slip frequency processing device of induction motors
FR2514146A1 (fr) * 1981-10-06 1983-04-08 Telemecanique Electrique Procede et dispositif de mesure du glissement d'un moteur electrique
JPS58130723U (ja) * 1982-02-26 1983-09-03 名古屋化学工業株式会社 シ−ト状物の構造
JPS58133424U (ja) * 1982-03-04 1983-09-08 名古屋化学工業株式会社 短繊維を施こした合成樹脂成形品
DE3212439C2 (de) * 1982-04-02 1992-02-20 Robert Prof.Dr.-Ing. 6100 Darmstadt Jötten Verfahren zum Betrieb einer durch schnelle elektrische Stellglieder gespeisten Asynchronmaschine
FR2535077A1 (fr) * 1982-10-26 1984-04-27 K T Dispositif de commande d'un moteur a courant alternatif
EP0175154B1 (fr) * 1984-08-21 1991-11-06 Hitachi, Ltd. Méthode pour commander un moteur à induction par un convertisseur
NZ211523A (en) * 1985-03-21 1990-03-27 Univ Auckland Motor speed control by frequency dependent signal
JPS6141398U (ja) * 1985-08-01 1986-03-15 東洋電機製造株式会社 瞬時すべり角周波数演算検出回路
FI77549C (fi) * 1986-03-19 1989-03-10 Kone Oy Foerfarande och anordning foer aostadkommande av spaenningsreferensens amplitud vid en inverter som matar en kortsluten asynkronmotor.
JPH0817599B2 (ja) * 1988-04-18 1996-02-21 日本オーチス・エレベータ株式会社 エレベータの速度制御装置
SG92598A1 (en) * 1988-04-18 2002-11-19 Otis Elevator Co Speed control system for elevators
EP0423384B1 (fr) * 1989-10-16 1993-07-28 Otis Elevator Company Dispositif de commande pour un système d'élévateur sans indicateur de vitesse
US5661386A (en) * 1993-11-22 1997-08-26 Lockheed Martin Energy Systems, Inc. Method for assessing in-service motor efficiency and in-service motor/load efficiency
EP0690556B1 (fr) * 1994-06-30 1997-02-12 Siemens Aktiengesellschaft Reconnaissance de l'arrêt d'un moteur tournant alimenté par un onduleur sans capteur de vitesse, dans le cas d'un redémarrage
FI112414B (fi) * 2001-03-19 2003-11-28 Abb Industry Oy Menetelmä vaihtosuuntaajan yhteydessä
US6856115B2 (en) * 2002-10-31 2005-02-15 A. O. Smith Corporation Method of and apparatus for controlling the operation of an induction motor using a model of the induction motor
US6940240B2 (en) * 2003-05-29 2005-09-06 The Chamberlain Group, Inc. Movable barrier operator multi-technique excess force avoidance apparatus and method
JP5851867B2 (ja) * 2012-02-03 2016-02-03 ジェーピーイー株式会社 誘導電動機の駆動装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3512067A (en) * 1965-03-25 1970-05-12 Mini Ind Constructillor Speed regulation of asynchronous three-phase motors
GB1150606A (en) * 1965-09-30 1969-04-30 Deputy Minister Of The Ministe Method and Circuit for Speed Control of Asynchronous Motors Fed by Static Frequency Convertors
AT289964B (de) * 1968-04-18 1971-05-10 Siemens Ag Elektrische Einrichtung zur Istwertbildung in einer vermaschten Regelanordnung für eine insbesondere umrichtergespeiste Drehstromasynchronmaschine
US3824437A (en) * 1969-08-14 1974-07-16 Siemens Ag Method for controlling asynchronous machines
US3718847A (en) * 1971-05-28 1973-02-27 Gen Electric Adjustable speed polyphase a-c motor drive utilizing an in-phase current signal for motor control
US3775652A (en) * 1972-01-06 1973-11-27 Scragg & Sons Speed controls for electric motors
US3909687A (en) * 1974-03-05 1975-09-30 Westinghouse Electric Corp Flux control system for controlled induction motors

Also Published As

Publication number Publication date
CA1096043A (fr) 1981-02-17
AU503362B2 (en) 1979-08-30
JPS5626239B2 (fr) 1981-06-17
AU8499775A (en) 1977-03-24
IT1050986B (it) 1981-03-20
BE834105A (fr) 1976-04-01
BR7506356A (pt) 1976-08-17
FR2287130A1 (fr) 1976-04-30
ES441467A1 (es) 1977-07-01
US3989991A (en) 1976-11-02
JPS5162313A (fr) 1976-05-29

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