JPS56148195A - Controller for ac motor - Google Patents

Controller for ac motor

Info

Publication number
JPS56148195A
JPS56148195A JP4980880A JP4980880A JPS56148195A JP S56148195 A JPS56148195 A JP S56148195A JP 4980880 A JP4980880 A JP 4980880A JP 4980880 A JP4980880 A JP 4980880A JP S56148195 A JPS56148195 A JP S56148195A
Authority
JP
Japan
Prior art keywords
magnetic flux
signal
voltage
operation mode
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.)
Granted
Application number
JP4980880A
Other languages
Japanese (ja)
Other versions
JPS6035918B2 (en
Inventor
Takao Yanase
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP55049808A priority Critical patent/JPS6035918B2/en
Priority to DE19813115538 priority patent/DE3115538A1/en
Publication of JPS56148195A publication Critical patent/JPS56148195A/en
Publication of JPS6035918B2 publication Critical patent/JPS6035918B2/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
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/443—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/45—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M5/4505—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only having a rectifier with controlled elements
    • 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
    • H02P2201/00—Indexing scheme relating to controlling arrangements characterised by the converter used
    • H02P2201/03—AC-DC converter stage controlled to provide a defined DC link voltage

Landscapes

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

Abstract

PURPOSE: To prevent hunting by changing output frequency of a power converter according to a variation rate of an internal magnetic flux of a motor detecting a sign of the hunting depending on the variation in the magnetic flux.
CONSTITUTION: A terminal voltage of a motor detected with insulation through a transformer 14 is introduced to a magnetic flux detector 20 to detect the magnitude of the flux. The detection signal is differentiated in a differentiation circuit 18 and the differentiation signal is introduced into an adder 19 at the input section of a voltage/frequency converter 12 in the polarity matching an operation mode each time with a polarity switch 22 and overlaps a speed setting signal as a proper frequency command value. To discriminate the operation mode, the level of the output voltage of a current control computer 8 as command signal of firing angle determining the output voltage of a converter 2 is compared with a reference level with a comparator 21.
COPYRIGHT: (C)1981,JPO&Japio
JP55049808A 1980-04-16 1980-04-16 AC motor control device Expired JPS6035918B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP55049808A JPS6035918B2 (en) 1980-04-16 1980-04-16 AC motor control device
DE19813115538 DE3115538A1 (en) 1980-04-16 1981-04-16 Device for regulating an induction machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55049808A JPS6035918B2 (en) 1980-04-16 1980-04-16 AC motor control device

Publications (2)

Publication Number Publication Date
JPS56148195A true JPS56148195A (en) 1981-11-17
JPS6035918B2 JPS6035918B2 (en) 1985-08-17

Family

ID=12841425

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55049808A Expired JPS6035918B2 (en) 1980-04-16 1980-04-16 AC motor control device

Country Status (2)

Country Link
JP (1) JPS6035918B2 (en)
DE (1) DE3115538A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19533570C2 (en) * 1995-09-11 1999-01-21 Abb Daimler Benz Transp Method for controlling a three-phase machine

Also Published As

Publication number Publication date
DE3115538A1 (en) 1982-03-25
JPS6035918B2 (en) 1985-08-17

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