JPS5671493A - Frequency converter - Google Patents

Frequency converter

Info

Publication number
JPS5671493A
JPS5671493A JP14655179A JP14655179A JPS5671493A JP S5671493 A JPS5671493 A JP S5671493A JP 14655179 A JP14655179 A JP 14655179A JP 14655179 A JP14655179 A JP 14655179A JP S5671493 A JPS5671493 A JP S5671493A
Authority
JP
Japan
Prior art keywords
notch
slip frequency
command
frequency
response
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
JP14655179A
Other languages
Japanese (ja)
Inventor
Hideki Hayashi
Original Assignee
Toyo Electric Mfg 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 Toyo Electric Mfg Co Ltd filed Critical Toyo Electric Mfg Co Ltd
Priority to JP14655179A priority Critical patent/JPS5671493A/en
Publication of JPS5671493A publication Critical patent/JPS5671493A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04Arrangements 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
    • H02P27/06Arrangements 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

Abstract

PURPOSE:To retain notch characteristic even in constant power operation characteristic region by limiting the slip frequency command to predetermined level value in response to the notch command. CONSTITUTION:A slip frequency limiting circuit 23 for limiting the slip frequency command to predetermined level value in response to the output of a notch command circuit 22 is provided at a device for controlling the output voltage and the frequency of the inverter 15 through a control circuit 14 in accordance with the outputs from voltage control amplifier 8 and adder 13, the voltage of the motor is maintained at constant level, the slip frequency is raised approximately proportionally to the primary frequency of the motor, and the slip frequency is limited to a predetermined level in response to the output of the notch command circuit for instructing the notch characteristic at the time of controlling the motor. Thus, the notch characteristic corresponding to the weak field characteristics of the conventional resistance controlled vehicle can be incorporated even in the constant power operation characteristic region.
JP14655179A 1979-11-14 1979-11-14 Frequency converter Pending JPS5671493A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14655179A JPS5671493A (en) 1979-11-14 1979-11-14 Frequency converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14655179A JPS5671493A (en) 1979-11-14 1979-11-14 Frequency converter

Publications (1)

Publication Number Publication Date
JPS5671493A true JPS5671493A (en) 1981-06-15

Family

ID=15410212

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14655179A Pending JPS5671493A (en) 1979-11-14 1979-11-14 Frequency converter

Country Status (1)

Country Link
JP (1) JPS5671493A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6039388A (en) * 1983-08-10 1985-03-01 Mitsubishi Electric Corp Slip frequency control type inverter device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5166432A (en) * 1974-12-05 1976-06-09 Tokyo Shibaura Electric Co Judodendokino sokudoseigyohoshiki

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5166432A (en) * 1974-12-05 1976-06-09 Tokyo Shibaura Electric Co Judodendokino sokudoseigyohoshiki

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6039388A (en) * 1983-08-10 1985-03-01 Mitsubishi Electric Corp Slip frequency control type inverter device
JPH0328915B2 (en) * 1983-08-10 1991-04-22 Mitsubishi Electric Corp

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