GB1188145A - Method of Controlling the Torque of an Asynchronous Machine - Google Patents

Method of Controlling the Torque of an Asynchronous Machine

Info

Publication number
GB1188145A
GB1188145A GB30959/67A GB3095967A GB1188145A GB 1188145 A GB1188145 A GB 1188145A GB 30959/67 A GB30959/67 A GB 30959/67A GB 3095967 A GB3095967 A GB 3095967A GB 1188145 A GB1188145 A GB 1188145A
Authority
GB
United Kingdom
Prior art keywords
signal
motor
controller
torque
frequency
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
GB30959/67A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1188145A publication Critical patent/GB1188145A/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
    • 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
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/40—Regulating or controlling the amount of current drawn or delivered by the motor for controlling the mechanical load
    • 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
    • H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
    • H02P2207/01—Asynchronous machines

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

1,188,145. Control of A.C. motors. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. 5 July, 1967 [5 July, 1966], No. 30959/67. Heading H2J. In a torque control system, a three-phase induction motor 3 is fed from a direct-current source Ug through inverter 1 whose output voltage is variable in frequency and amplitude. A signal Ii, representing the motor current, is compared with a reference signal Is, and the error signal is applied to a controller 4 for the inverter. A digital generator 5 is coupled to the motor and provides a rotational frequency signal fn which is added to a slip frequency signal fs to form a sum frequency signal f, the latter being applied to the controller 4 also. Function generators 11, 12 enable the signals Is and fs to be adjusted in such a manner that the main flux of the motor remains constant. A superimposed speed control is provided by analogue signal ni which is formed from the signal fn by converter 8 and is compared with reference signal ns. The difference signal is amplified and applied to the function generators 11, 12. A function generator 13 receives a signal dependent upon the slip frequency, and its output signal represents the phase angle between the stator current and main flux in analogue form. Unit 14 converts this output signal to pulse form for application to the controller 4. This enables rapid changes in the torque to be effected without a sudden change in the spatial relationship between the rotating field and the rotor taking place. To improve the dynamic behaviour of the motor at high speeds, the output of the function generator 13 is modified by a signal derived from the converter 8.
GB30959/67A 1966-07-05 1967-07-05 Method of Controlling the Torque of an Asynchronous Machine Expired GB1188145A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL0053983 1966-07-05

Publications (1)

Publication Number Publication Date
GB1188145A true GB1188145A (en) 1970-04-15

Family

ID=7275821

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30959/67A Expired GB1188145A (en) 1966-07-05 1967-07-05 Method of Controlling the Torque of an Asynchronous Machine

Country Status (7)

Country Link
BE (1) BE700871A (en)
DE (1) DE1563228B2 (en)
GB (1) GB1188145A (en)
LU (1) LU53937A1 (en)
NL (1) NL6708954A (en)
NO (1) NO123972B (en)
SE (1) SE333979B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2361339A1 (en) * 1973-12-08 1975-06-19 Bbc Brown Boveri & Cie METHOD OF REGULATING THE TORQUE OF AN ASYNCHRONOUS MACHINE
FR2404859A1 (en) * 1977-09-28 1979-04-27 Uranit Gmbh PROCESS AND INSTALLATION FOR DETERMINING THE MAGNETIC CHARACTERISTICS OF THE ROTOR OF A HYSTERESIS MOTOR
RU2576330C1 (en) * 2014-09-23 2016-02-27 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Национальный исследовательский Томский политехнический университет" Alternating current electric drive

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2452833C2 (en) * 1974-11-07 1984-02-02 Brown, Boveri & Cie Ag, 6800 Mannheim Arrangement for controlling the torque of a synchronous machine fed by a converter with voltages of adjustable amplitude and frequency
DE2637116A1 (en) * 1975-08-19 1977-03-03 Gen Electric INDUCTION MOTOR CONTROL ARRANGEMENT
JPS5396423A (en) * 1977-02-01 1978-08-23 Mitsubishi Electric Corp Control system for induction motor
DE2952325C2 (en) * 1979-12-24 1986-11-27 Brown, Boveri & Cie Ag, 6800 Mannheim Method for controlling the torque and / or the speed of an asynchronous machine fed by a converter with impressed intermediate circuit current

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2361339A1 (en) * 1973-12-08 1975-06-19 Bbc Brown Boveri & Cie METHOD OF REGULATING THE TORQUE OF AN ASYNCHRONOUS MACHINE
FR2404859A1 (en) * 1977-09-28 1979-04-27 Uranit Gmbh PROCESS AND INSTALLATION FOR DETERMINING THE MAGNETIC CHARACTERISTICS OF THE ROTOR OF A HYSTERESIS MOTOR
RU2576330C1 (en) * 2014-09-23 2016-02-27 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Национальный исследовательский Томский политехнический университет" Alternating current electric drive

Also Published As

Publication number Publication date
NO123972B (en) 1972-02-07
DE1563228B2 (en) 1972-04-06
LU53937A1 (en) 1967-08-21
BE700871A (en) 1967-12-18
SE333979B (en) 1971-04-05
DE1563228A1 (en) 1970-03-19
NL6708954A (en) 1968-01-08

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees