JPS55111691A - Device for controlling operation of ac motor - Google Patents

Device for controlling operation of ac motor

Info

Publication number
JPS55111691A
JPS55111691A JP1732479A JP1732479A JPS55111691A JP S55111691 A JPS55111691 A JP S55111691A JP 1732479 A JP1732479 A JP 1732479A JP 1732479 A JP1732479 A JP 1732479A JP S55111691 A JPS55111691 A JP S55111691A
Authority
JP
Japan
Prior art keywords
motor
current
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
JP1732479A
Other languages
Japanese (ja)
Other versions
JPS6310679B2 (en
Inventor
Toshiaki Okuyama
Yuzuru Kubota
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 JP1732479A priority Critical patent/JPS55111691A/en
Publication of JPS55111691A publication Critical patent/JPS55111691A/en
Publication of JPS6310679B2 publication Critical patent/JPS6310679B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To enable continuation of operation of an AC motor by providing a control circuit for controlling the output current of alive converter to generate a current at normal time when one of the converters provided at respective phases of the motor malfunctions.
CONSTITUTION: A cyclo converter 1 for driving a synchronous motor 2 compares the signal from a speed detector 4 with the output from a speed instructing circuit 5, and the output from a position detector 7 is applied to multipliers 8∼10 for control. There is provided a control circuit 11 having switches 21∼26 and adders 27∼29 between the multipliers 8∼10 and current deviation amplifiers 15∼17. When one of the respective phased of the converter 1 malfunctions, the defective phase is separated, and a current instruction signal of the defective phase is applied thereto together with the original current instructing signal. Accordingly, the armature winding of the defective phase generates the electromotive force equal to the electromotive force induced at normal time in the alive phases to thus continue the operation of the motor with safety.
COPYRIGHT: (C)1980,JPO&Japio
JP1732479A 1979-02-19 1979-02-19 Device for controlling operation of ac motor Granted JPS55111691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1732479A JPS55111691A (en) 1979-02-19 1979-02-19 Device for controlling operation of ac motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1732479A JPS55111691A (en) 1979-02-19 1979-02-19 Device for controlling operation of ac motor

Publications (2)

Publication Number Publication Date
JPS55111691A true JPS55111691A (en) 1980-08-28
JPS6310679B2 JPS6310679B2 (en) 1988-03-08

Family

ID=11940851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1732479A Granted JPS55111691A (en) 1979-02-19 1979-02-19 Device for controlling operation of ac motor

Country Status (1)

Country Link
JP (1) JPS55111691A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61150698A (en) * 1984-12-24 1986-07-09 Toshiba Corp Method of controlling ac motor
JP2007507998A (en) * 2003-10-06 2007-03-29 ウェイブクレスト ラボラトリーズ リミテッド ライアビリティ カンパニー Fault-tolerant electric motor control system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5226110U (en) * 1975-08-14 1977-02-23

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5226110U (en) * 1975-08-14 1977-02-23

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61150698A (en) * 1984-12-24 1986-07-09 Toshiba Corp Method of controlling ac motor
JP2007507998A (en) * 2003-10-06 2007-03-29 ウェイブクレスト ラボラトリーズ リミテッド ライアビリティ カンパニー Fault-tolerant electric motor control system

Also Published As

Publication number Publication date
JPS6310679B2 (en) 1988-03-08

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