JPS54144920A - Brushless exciter - Google Patents

Brushless exciter

Info

Publication number
JPS54144920A
JPS54144920A JP5270378A JP5270378A JPS54144920A JP S54144920 A JPS54144920 A JP S54144920A JP 5270378 A JP5270378 A JP 5270378A JP 5270378 A JP5270378 A JP 5270378A JP S54144920 A JPS54144920 A JP S54144920A
Authority
JP
Japan
Prior art keywords
current
reactance
stator winding
field current
detected
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
JP5270378A
Other languages
Japanese (ja)
Inventor
Toshiaki Okuyama
Yuzuru Kubota
Hiroshi Nagase
Katsunori Suzuki
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 JP5270378A priority Critical patent/JPS54144920A/en
Publication of JPS54144920A publication Critical patent/JPS54144920A/en
Pending legal-status Critical Current

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  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE: To provide a substantiality in the rotor portion without directly detecting a field current, by such means that, with a reactance connected in parallel to the stator winding of a rotary transformer, the field current be detected from a difference between currents of the stator winding and the reactance.
CONSTITUTION: With a reactance 7 connected in parallel to the stator winding W1 of a rotary transformer 3, currents in the stator winding and the reactance are detected by a current transformer 6, 8, and its difference is compared with a command signal Ifp of field current by a current deviation amplifier 10. And by this output, through a firing pulse transmitting rotary transformer 13, is controlled a thyristor converter 5. Accordingly, a level and phase of conduction current in the reactance 7 becoming a relation of similarity with the field current, with a difference obtained between the above and the current in the current transformer 6, the field current can be detected in good precision, simultanesously with a simplification made capable for the constitution of the rotor portion because of a detection being made at the stator side.
COPYRIGHT: (C)1979,JPO&Japio
JP5270378A 1978-05-04 1978-05-04 Brushless exciter Pending JPS54144920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5270378A JPS54144920A (en) 1978-05-04 1978-05-04 Brushless exciter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5270378A JPS54144920A (en) 1978-05-04 1978-05-04 Brushless exciter

Publications (1)

Publication Number Publication Date
JPS54144920A true JPS54144920A (en) 1979-11-12

Family

ID=12922241

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5270378A Pending JPS54144920A (en) 1978-05-04 1978-05-04 Brushless exciter

Country Status (1)

Country Link
JP (1) JPS54144920A (en)

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