JPS6469292A - Drive controller for induction motor - Google Patents

Drive controller for induction motor

Info

Publication number
JPS6469292A
JPS6469292A JP62221894A JP22189487A JPS6469292A JP S6469292 A JPS6469292 A JP S6469292A JP 62221894 A JP62221894 A JP 62221894A JP 22189487 A JP22189487 A JP 22189487A JP S6469292 A JPS6469292 A JP S6469292A
Authority
JP
Japan
Prior art keywords
inverter
time
current flowing
value
induction motor
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
JP62221894A
Other languages
Japanese (ja)
Other versions
JP2594968B2 (en
Inventor
Kaoru Takahashi
Tadamasa Niimi
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 JP62221894A priority Critical patent/JP2594968B2/en
Publication of JPS6469292A publication Critical patent/JPS6469292A/en
Application granted granted Critical
Publication of JP2594968B2 publication Critical patent/JP2594968B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To suppress a DC current flowing to an inverter at the time of load rapid change without hunting by suppressing the momentary change amount of a DC current flowing to the inverter at the time of rapid change of load. CONSTITUTION:A DC current flowing to an inverter 8 is detected by a DC current transformer 1, the value of the detected DC current is divided by the speed command value of an induction motor IM at this time to become the value 6 corresponding to a motor torque. The value 6 of the motor torque obtained in this manner is differentiated by a differentiator 3 to obtain a correction amount 7. The amount 7 is input to the input side of an integrator 5 in a soft starter 4, i.e., a point I. Thus, the momentary change amount of the current flowing to the inverter 8 is suppressed at the time of load rapid change of the motor IM.
JP62221894A 1987-09-07 1987-09-07 Drive control device for induction motor Expired - Lifetime JP2594968B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62221894A JP2594968B2 (en) 1987-09-07 1987-09-07 Drive control device for induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62221894A JP2594968B2 (en) 1987-09-07 1987-09-07 Drive control device for induction motor

Publications (2)

Publication Number Publication Date
JPS6469292A true JPS6469292A (en) 1989-03-15
JP2594968B2 JP2594968B2 (en) 1997-03-26

Family

ID=16773837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62221894A Expired - Lifetime JP2594968B2 (en) 1987-09-07 1987-09-07 Drive control device for induction motor

Country Status (1)

Country Link
JP (1) JP2594968B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002202772A (en) * 2000-12-28 2002-07-19 Sharp Corp Display device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60194791A (en) * 1984-03-13 1985-10-03 Meidensha Electric Mfg Co Ltd Variable speed control system of induction motor
JPS61117597U (en) * 1984-12-28 1986-07-24

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60194791A (en) * 1984-03-13 1985-10-03 Meidensha Electric Mfg Co Ltd Variable speed control system of induction motor
JPS61117597U (en) * 1984-12-28 1986-07-24

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002202772A (en) * 2000-12-28 2002-07-19 Sharp Corp Display device

Also Published As

Publication number Publication date
JP2594968B2 (en) 1997-03-26

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