JPS53132730A - Operation monitoring system for ac motor - Google Patents

Operation monitoring system for ac motor

Info

Publication number
JPS53132730A
JPS53132730A JP4754477A JP4754477A JPS53132730A JP S53132730 A JPS53132730 A JP S53132730A JP 4754477 A JP4754477 A JP 4754477A JP 4754477 A JP4754477 A JP 4754477A JP S53132730 A JPS53132730 A JP S53132730A
Authority
JP
Japan
Prior art keywords
motor
electromotive force
monitoring system
back electromotive
operation monitoring
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
JP4754477A
Other languages
Japanese (ja)
Inventor
Nagataka Seki
Kosaku Ichikawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4754477A priority Critical patent/JPS53132730A/en
Publication of JPS53132730A publication Critical patent/JPS53132730A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE: To permit detection of back electromotive force with constant current independently of the rotational frequency in monitoring the operating state of the AC motor through detection of the back electromotive force by inserting a reactor between and a back electromotive force detection circuit and a motor coil lead.
COPYRIGHT: (C)1978,JPO&Japio
JP4754477A 1977-04-25 1977-04-25 Operation monitoring system for ac motor Pending JPS53132730A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4754477A JPS53132730A (en) 1977-04-25 1977-04-25 Operation monitoring system for ac motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4754477A JPS53132730A (en) 1977-04-25 1977-04-25 Operation monitoring system for ac motor

Publications (1)

Publication Number Publication Date
JPS53132730A true JPS53132730A (en) 1978-11-18

Family

ID=12778079

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4754477A Pending JPS53132730A (en) 1977-04-25 1977-04-25 Operation monitoring system for ac motor

Country Status (1)

Country Link
JP (1) JPS53132730A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103675409A (en) * 2013-12-19 2014-03-26 南车株洲电机有限公司 Measuring method and device for no-load back electromotive force of permanent magnet motor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5226412A (en) * 1975-08-22 1977-02-28 Toshiba Corp Operation supervisory system of motor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5226412A (en) * 1975-08-22 1977-02-28 Toshiba Corp Operation supervisory system of motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103675409A (en) * 2013-12-19 2014-03-26 南车株洲电机有限公司 Measuring method and device for no-load back electromotive force of permanent magnet motor
CN103675409B (en) * 2013-12-19 2016-08-10 南车株洲电机有限公司 A kind of no-load back electromotive force of permanent magnet motor measuring method and device

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