GB1056359A - An a.c. motor speed control system - Google Patents

An a.c. motor speed control system

Info

Publication number
GB1056359A
GB1056359A GB43388/63A GB4338863A GB1056359A GB 1056359 A GB1056359 A GB 1056359A GB 43388/63 A GB43388/63 A GB 43388/63A GB 4338863 A GB4338863 A GB 4338863A GB 1056359 A GB1056359 A GB 1056359A
Authority
GB
United Kingdom
Prior art keywords
magnetic
derived
voltage
control
phase
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
GB43388/63A
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
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 ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Publication of GB1056359A publication Critical patent/GB1056359A/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
    • 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
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/022—Synchronous motors
    • H02P25/024—Synchronous motors controlled by supply frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superconductive Dynamoelectric Machines (AREA)

Abstract

1,056,359. Converting; control of A.C. motors. ALLMANNA SVENSKA ELEKTRISKA A.B. Nov. 4, 1963 [Nov. 14, 1962], No. 43388/63. Headings H2F and H2J. An A.C. motor is supplied by a converter providing a variable frequency output to give variable speed, and control for the converter is derived from a pair of reluctance type A.C. generator devices having rotating parts driven by the motor shaft. As shown, a rotating part 23 comprises a magnetic semi-cylinder 24 and a non-magnetic semi-cylinder 25. Two magnetic cores 41, 42 for each phase are disposed about the part 23, one above and one below, each bearing a winding fed from a high frequency generator 321 or 322 and connected with oppositely directed rectifiers 211, 221, so that according as whether the magnetic half 24 completes the upper or lower magnetic circuits so a voltage E 2 is derived in one sense or the other. An exactly similar device is associated with the other rotating part 13, but the magnetic and non-magnetic semi-cylinders are displaced by 90 degrees on the shaft. A voltage E 1 is derived from this device, the voltages E 1 , E 2 being alternating voltages having the frequency of the rotor and being 90 degrees phase displaced. These two are added to give a voltage E 5 which is used to control the inverter, similar voltages being derived for the other phases of the three phase supply. To increase speed the phase of the voltage E 5 is advanced, this being effected by varying the magnitude of E 1 relative to E 2 by control of the high frequency generators.
GB43388/63A 1962-11-14 1963-11-04 An a.c. motor speed control system Expired GB1056359A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1218762 1962-11-14

Publications (1)

Publication Number Publication Date
GB1056359A true GB1056359A (en) 1967-01-25

Family

ID=20295298

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43388/63A Expired GB1056359A (en) 1962-11-14 1963-11-04 An a.c. motor speed control system

Country Status (2)

Country Link
CH (1) CH403028A (en)
GB (1) GB1056359A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3956649A (en) * 1974-06-20 1976-05-11 Aeroflex Laboratories, Inc. Brushless rotary signal transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3956649A (en) * 1974-06-20 1976-05-11 Aeroflex Laboratories, Inc. Brushless rotary signal transducer

Also Published As

Publication number Publication date
CH403028A (en) 1965-11-30

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