JPS5749393A - Inverter controlling circuit for driving motor - Google Patents

Inverter controlling circuit for driving motor

Info

Publication number
JPS5749393A
JPS5749393A JP55124236A JP12423680A JPS5749393A JP S5749393 A JPS5749393 A JP S5749393A JP 55124236 A JP55124236 A JP 55124236A JP 12423680 A JP12423680 A JP 12423680A JP S5749393 A JPS5749393 A JP S5749393A
Authority
JP
Japan
Prior art keywords
frequency
voltage
inverter
output
circuit
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
JP55124236A
Other languages
Japanese (ja)
Inventor
Yorio Hosokawa
Hiroyuki Kitamura
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP55124236A priority Critical patent/JPS5749393A/en
Publication of JPS5749393A publication Critical patent/JPS5749393A/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
    • 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
    • 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

Abstract

PURPOSE:To prevent the hunting of a motor by feeding back a value corresponding to variation of the low frequency in the output current of an inverter to a voltage frequency converter determining the output frequency of the inverter. CONSTITUTION:An output of a pulse width modulation voltage type inverter 14 is applied to an induction motor 6 by way of a current transformer 5. A command frequency reference from a frequency setting device 7 and an output voltage of the inverter 14 are applied to a voltage controlling circuit 10 to form a voltage control signal, which is applied to a pulse width modulation controlling circuit 11. A load current detection signal from the current transformer 5 is inputted into an arithmetic circuit 13 with the command frequency reference through a phase inverter 12. The arithmetic circuit 13 react to variation in a low frequency of said detection signal but not to that of a high frequency. The output of the circuit is converted into or frequency control signal with a voltage frequency converter circuit and applied to the pulse width controlling circuit 11.
JP55124236A 1980-09-08 1980-09-08 Inverter controlling circuit for driving motor Pending JPS5749393A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55124236A JPS5749393A (en) 1980-09-08 1980-09-08 Inverter controlling circuit for driving motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55124236A JPS5749393A (en) 1980-09-08 1980-09-08 Inverter controlling circuit for driving motor

Publications (1)

Publication Number Publication Date
JPS5749393A true JPS5749393A (en) 1982-03-23

Family

ID=14880333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55124236A Pending JPS5749393A (en) 1980-09-08 1980-09-08 Inverter controlling circuit for driving motor

Country Status (1)

Country Link
JP (1) JPS5749393A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0165020A2 (en) * 1984-06-11 1985-12-18 Kabushiki Kaisha Toshiba Power converter for AC load
JPS62138091A (en) * 1985-12-10 1987-06-20 Daikin Ind Ltd Control method of inverter for driving induction machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0165020A2 (en) * 1984-06-11 1985-12-18 Kabushiki Kaisha Toshiba Power converter for AC load
JPS62138091A (en) * 1985-12-10 1987-06-20 Daikin Ind Ltd Control method of inverter for driving induction machine

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