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JPS5641772A - Current detector - Google Patents

Current detector

Info

Publication number
JPS5641772A
JPS5641772A JP11619679A JP11619679A JPS5641772A JP S5641772 A JPS5641772 A JP S5641772A JP 11619679 A JP11619679 A JP 11619679A JP 11619679 A JP11619679 A JP 11619679A JP S5641772 A JPS5641772 A JP S5641772A
Authority
JP
Japan
Prior art keywords
currents
capacitor
resistor
circuit
current transformer
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
JP11619679A
Other languages
Japanese (ja)
Other versions
JPS6129228B2 (en
Inventor
Toshiaki Kurosawa
Kiyoya Shima
Takeyoshi Ando
Hiromi Inaba
Yoshio Sakai
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 JP11619679A priority Critical patent/JPS5641772A/en
Publication of JPS5641772A publication Critical patent/JPS5641772A/en
Publication of JPS6129228B2 publication Critical patent/JPS6129228B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
    • H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
    • H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/155—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

PURPOSE:To detect currents accurately by means of a simple circuit by a method wherein a current transformer for detecting currents formed by connecting a resistor and a capacitor to secondary winding is inserted and connected between a surge absorber and a thyristor DC converting circuit. CONSTITUTION:Currents are fed to a thyristor DC converting circuit 5, to which load 7 is connected, from an AC terminal 1. A shock absorber formed by a resistor 3 and a capacitor 4 is connected between the terminal 1 and the circuit 5, and the primary winding of a current transformer 21 of a detector for currents is inserted and connected between the shock absorber and the circuit 5. A load resistor 25 and a series circuit of a resistor 26 and a capacitor 27 are connected to the secondary winding 24 of the current transformer 21. An effect by means of the shock absorber is removed because pulse-shaped currents generated from the capacitor 4 in the case when load currents Id are zero are absorbed by means of the series circuit of the resistor 26 and the capacitor 27.
JP11619679A 1979-09-12 1979-09-12 Current detector Granted JPS5641772A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11619679A JPS5641772A (en) 1979-09-12 1979-09-12 Current detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11619679A JPS5641772A (en) 1979-09-12 1979-09-12 Current detector

Publications (2)

Publication Number Publication Date
JPS5641772A true JPS5641772A (en) 1981-04-18
JPS6129228B2 JPS6129228B2 (en) 1986-07-05

Family

ID=14681207

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11619679A Granted JPS5641772A (en) 1979-09-12 1979-09-12 Current detector

Country Status (1)

Country Link
JP (1) JPS5641772A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01126168A (en) * 1987-11-07 1989-05-18 Mitsubishi Electric Corp Current detection circuit of thyristor converter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5010276U (en) * 1973-05-25 1975-02-01
JPS5291129A (en) * 1976-01-26 1977-08-01 Hitachi Ltd Protecting circuit for thyristor converter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5010276U (en) * 1973-05-25 1975-02-01
JPS5291129A (en) * 1976-01-26 1977-08-01 Hitachi Ltd Protecting circuit for thyristor converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01126168A (en) * 1987-11-07 1989-05-18 Mitsubishi Electric Corp Current detection circuit of thyristor converter

Also Published As

Publication number Publication date
JPS6129228B2 (en) 1986-07-05

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