JPS56148192A - Control of frequency converter - Google Patents

Control of frequency converter

Info

Publication number
JPS56148192A
JPS56148192A JP5044580A JP5044580A JPS56148192A JP S56148192 A JPS56148192 A JP S56148192A JP 5044580 A JP5044580 A JP 5044580A JP 5044580 A JP5044580 A JP 5044580A JP S56148192 A JPS56148192 A JP S56148192A
Authority
JP
Japan
Prior art keywords
motor
power
frequency converter
signal
output
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.)
Pending
Application number
JP5044580A
Other languages
Japanese (ja)
Inventor
Mitsusachi Motobe
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5044580A priority Critical patent/JPS56148192A/en
Publication of JPS56148192A publication Critical patent/JPS56148192A/en
Pending 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
    • 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
    • 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)
  • Ac-Ac Conversion (AREA)

Abstract

PURPOSE:To ensure continuation of a stable operation with a simple construction against sudden change in the load of a motor by compensating control of an output voltage of a frequency converter according to the current flowing through an ac motor to be driven thereby. CONSTITUTION:An output voltage of a frequency converter which is adapted to drive an ac motor with an ac power or by converting a dc power into an ac power with an desired frequency is controlled in a compensating manner according to the current flowing through an ac motor. For example, a function generator 15 is used to generate an output signal of a current transformer 7, namely, a signal according to the current of a motor 5 which is added to an output signal of a voltage/frequency setter 9 and a deviation between the resulting signal and the output signal of a detection transformer 8 is amplified 10. The deviation between the output and a current signal is amplified 11 to control a power rectifier 2 by way of a gate pulse generator 12 while a power inverter 4 is controlled by way of a voltage-frequency converter 13 and a pulse distributer 14 with an output signal of the setter 9.
JP5044580A 1980-04-18 1980-04-18 Control of frequency converter Pending JPS56148192A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5044580A JPS56148192A (en) 1980-04-18 1980-04-18 Control of frequency converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5044580A JPS56148192A (en) 1980-04-18 1980-04-18 Control of frequency converter

Publications (1)

Publication Number Publication Date
JPS56148192A true JPS56148192A (en) 1981-11-17

Family

ID=12859052

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5044580A Pending JPS56148192A (en) 1980-04-18 1980-04-18 Control of frequency converter

Country Status (1)

Country Link
JP (1) JPS56148192A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08178504A (en) * 1994-09-14 1996-07-12 Lg Electronics Inc Damper for adjusting temperature of refrigerator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08178504A (en) * 1994-09-14 1996-07-12 Lg Electronics Inc Damper for adjusting temperature of refrigerator

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