JPS57189591A - Stationary scherbius device - Google Patents

Stationary scherbius device

Info

Publication number
JPS57189591A
JPS57189591A JP7279581A JP7279581A JPS57189591A JP S57189591 A JPS57189591 A JP S57189591A JP 7279581 A JP7279581 A JP 7279581A JP 7279581 A JP7279581 A JP 7279581A JP S57189591 A JPS57189591 A JP S57189591A
Authority
JP
Japan
Prior art keywords
speed
overcurrent
fact
power converter
output signal
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
JP7279581A
Other languages
Japanese (ja)
Other versions
JPS6038958B2 (en
Inventor
Tatsuo Shimizu
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.)
Yaskawa Electric Corp
Original Assignee
Yaskawa Electric Manufacturing 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 Yaskawa Electric Manufacturing Co Ltd filed Critical Yaskawa Electric Manufacturing Co Ltd
Priority to JP56072795A priority Critical patent/JPS6038958B2/en
Publication of JPS57189591A publication Critical patent/JPS57189591A/en
Publication of JPS6038958B2 publication Critical patent/JPS6038958B2/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
    • H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
    • H02P21/06—Rotor flux based control involving the use of rotor position or rotor speed sensors
    • H02P21/08—Indirect field-oriented control; Rotor flux feed-forward control
    • H02P21/09—Field phase angle calculation based on rotor voltage equation by adding slip frequency and speed proportional frequency
    • 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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/08—Controlling based on slip frequency, e.g. adding slip frequency and speed proportional frequency

Landscapes

  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE:To suppress an overcurrent of a main circuit by negatively feeding back a detection output signal from a detector provided between power converter DC buses to a speed instructing circuit. CONSTITUTION:An operational amplifier AMP1 has inversely proportional input/ output characteristic. The fact that the output signal VDsig of a detector VD proportional to the secondary voltage of an induction motor becomes lower than the prescribed level, and a speed command Nref is negatively fed back to the previous stage of a speed amplifier NAMP. That is, the fact that the value of the voltage of a power converter becomes almost zero or slightly inverted in polarity is detected, thereby suppressing the overcurrent.
JP56072795A 1981-05-14 1981-05-14 Stationary Servius device Expired JPS6038958B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56072795A JPS6038958B2 (en) 1981-05-14 1981-05-14 Stationary Servius device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56072795A JPS6038958B2 (en) 1981-05-14 1981-05-14 Stationary Servius device

Publications (2)

Publication Number Publication Date
JPS57189591A true JPS57189591A (en) 1982-11-20
JPS6038958B2 JPS6038958B2 (en) 1985-09-03

Family

ID=13499674

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56072795A Expired JPS6038958B2 (en) 1981-05-14 1981-05-14 Stationary Servius device

Country Status (1)

Country Link
JP (1) JPS6038958B2 (en)

Also Published As

Publication number Publication date
JPS6038958B2 (en) 1985-09-03

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