JPS54119968A - Method of detecting megnetic flux component of ac rotary machine - Google Patents

Method of detecting megnetic flux component of ac rotary machine

Info

Publication number
JPS54119968A
JPS54119968A JP2749378A JP2749378A JPS54119968A JP S54119968 A JPS54119968 A JP S54119968A JP 2749378 A JP2749378 A JP 2749378A JP 2749378 A JP2749378 A JP 2749378A JP S54119968 A JPS54119968 A JP S54119968A
Authority
JP
Japan
Prior art keywords
output
comparator
magnetic flux
low frequency
input
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
JP2749378A
Other languages
Japanese (ja)
Other versions
JPS5760582B2 (en
Inventor
Toshihiro Nomura
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 JP2749378A priority Critical patent/JPS54119968A/en
Publication of JPS54119968A publication Critical patent/JPS54119968A/en
Publication of JPS5760582B2 publication Critical patent/JPS5760582B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Measuring Magnetic Variables (AREA)
  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)

Abstract

PURPOSE: To improve the accuracy of detecting magnetic flux at low frequency by applying the positive peak value of estimated magnetic flux to one input of a comparator and feeding back the output of the comparator to an integrator.
CONSTITUTION: Estimated positive peak magnetic flux value +ϕR is applied to one input of a comparator 12 and magnetic flux value -ϕR amplified by an amplifier 11 is applied to the other input of the comparator 12. If the output ϕ of the integrator 10 is within the estimated peak values ±ϕR, the output of the comparator 12 is fluctuated toward minus side and the output of a comparator 13 is fluctuated toward plus side. If the resistances R5, R6 are set equal, e becomes zero. If the accuracy of the comparator 10 is finely adjusted, it can accurately calculate even at low frequency. If the output ϕ exceeds -ϕR, the output of the comparator 12 is fluctuated toward the plus side and the e is fluctuated toward the plus side to operate to reduce the output ϕ via the R8. If the output ϕ is lowered from -ϕR, the e is similarly fluctuated toward minus side so as to return around the output ϕ as a center. Thus, it can accurately detect the magnetic flux to low frequency.
COPYRIGHT: (C)1979,JPO&Japio
JP2749378A 1978-03-10 1978-03-10 Method of detecting megnetic flux component of ac rotary machine Granted JPS54119968A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2749378A JPS54119968A (en) 1978-03-10 1978-03-10 Method of detecting megnetic flux component of ac rotary machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2749378A JPS54119968A (en) 1978-03-10 1978-03-10 Method of detecting megnetic flux component of ac rotary machine

Publications (2)

Publication Number Publication Date
JPS54119968A true JPS54119968A (en) 1979-09-18
JPS5760582B2 JPS5760582B2 (en) 1982-12-20

Family

ID=12222653

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2749378A Granted JPS54119968A (en) 1978-03-10 1978-03-10 Method of detecting megnetic flux component of ac rotary machine

Country Status (1)

Country Link
JP (1) JPS54119968A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140243A (en) * 1991-09-13 1992-08-18 General Electric Company Discrete position estimator for a switched reluctance machine using a flux-current map comparator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140243A (en) * 1991-09-13 1992-08-18 General Electric Company Discrete position estimator for a switched reluctance machine using a flux-current map comparator

Also Published As

Publication number Publication date
JPS5760582B2 (en) 1982-12-20

Similar Documents

Publication Publication Date Title
JPS5733355A (en) Digital speed detector
JPS5590862A (en) Device for measuring resistance
JPS5223974A (en) Phase measuring circuit
JPS5418029A (en) Transformer system
JPS5394911A (en) Magnetic recorder-reproducer
JPS5269673A (en) Magnetic signal detecting circuit
JPS549652A (en) Differential transformer type sensor
JPS5241523A (en) Electroacoustic converter
JPS5365766A (en) Input offset voltage measuring method for semiconductive integrated linear circuit
JPS52106771A (en) Drift correction circuit
JPS5243911A (en) Measuring method of field current of brushless synchronous machine
JPS5279977A (en) Load detector
JPS52105884A (en) Tester using eddy current
JPS522370A (en) Ac-dc converting device
JPS5388797A (en) Method of detecting magnetic member
JPS5292502A (en) Measuring method for electromagnetic conversion efficiency of magnetic head
JPS5338380A (en) Peak detecting circuit
JPS5268941A (en) Anti time-limiting apparatus
JPS52113775A (en) Electronic balance
JPS6474062A (en) Rectifier
JPS51146272A (en) Measuring device for current, power-factor and power etc.
JPS5348448A (en) Control circuit for monostable multivibrator
JPS531573A (en) Measuring device for dc magnetization characteristics
JPS529409A (en) Mark write-in system of rotary type magnetic recorder
JPS5251962A (en) Detector for warking radius of crane-mobile and so on