CA934001A - Speed controls for electric motors - Google Patents

Speed controls for electric motors

Info

Publication number
CA934001A
CA934001A CA132353A CA132353A CA934001A CA 934001 A CA934001 A CA 934001A CA 132353 A CA132353 A CA 132353A CA 132353 A CA132353 A CA 132353A CA 934001 A CA934001 A CA 934001A
Authority
CA
Canada
Prior art keywords
electric motors
speed controls
controls
speed
motors
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.)
Expired
Application number
CA132353A
Other languages
English (en)
Other versions
CA132353S (en
Inventor
Nir Benjamin
Bowler Peter
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.)
Ernest Scragg and Sons Ltd
Original Assignee
Ernest Scragg and Sons Ltd
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 Ernest Scragg and Sons Ltd filed Critical Ernest Scragg and Sons Ltd
Application granted granted Critical
Publication of CA934001A publication Critical patent/CA934001A/en
Expired 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
    • H02P27/08—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 with pulse width modulation
    • 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
    • H02P23/28—Controlling the motor by varying the switching frequency of switches connected to a DC supply and the motor phases
    • 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
    • H02P27/047—V/F converter, wherein the voltage is controlled proportionally with the frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Multiple Motors (AREA)
CA132353A 1971-01-27 1972-01-13 Speed controls for electric motors Expired CA934001A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB325171 1971-01-27

Publications (1)

Publication Number Publication Date
CA934001A true CA934001A (en) 1973-09-18

Family

ID=9754812

Family Applications (1)

Application Number Title Priority Date Filing Date
CA132353A Expired CA934001A (en) 1971-01-27 1972-01-13 Speed controls for electric motors

Country Status (9)

Country Link
JP (1) JPS5047125A (de)
CA (1) CA934001A (de)
CH (1) CH551105A (de)
DE (1) DE2203487B2 (de)
FR (1) FR2124731A5 (de)
GB (1) GB1338644A (de)
IL (1) IL38533A (de)
IT (1) IT946880B (de)
NL (1) NL7201137A (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2743605C2 (de) * 1977-09-28 1982-03-25 URANIT, Uran-Isotopentrennungs-Gesellschaft mbH, 5170 Jülich Verfahren und Schaltungsanordnung zum Bestimmen der Ummagnetisierungsarbeit des Läufers eines Hysteresemotors
DE3273469D1 (en) * 1982-08-31 1986-10-30 Telemecanique Electrique Method and device for measuring the slip of a motor
FR2546683B1 (fr) * 1983-05-24 1985-07-26 Telemecanique Electrique Procede de regulation de l'alimentation des moteurs electriques et dispositif de mise en oeuvre du procede
CN1833834A (zh) 2005-03-18 2006-09-20 德昌电机股份有限公司 用于理发器的驱动电路
GB2425413A (en) * 2005-04-23 2006-10-25 Johnson Electric Sa Drive circuit for a hair clipper achieving constant speed

Also Published As

Publication number Publication date
DE2203487A1 (de) 1972-12-21
FR2124731A5 (de) 1972-09-22
IL38533A (en) 1974-11-29
AU3774272A (en) 1973-07-12
IT946880B (it) 1973-05-21
DE2203487B2 (de) 1977-04-14
JPS5047125A (de) 1975-04-26
CH551105A (de) 1974-06-28
GB1338644A (en) 1973-11-28
IL38533A0 (en) 1972-03-28
NL7201137A (de) 1972-07-31

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