JPS57182224A - Method for inhibiting overcurrent of power supply - Google Patents

Method for inhibiting overcurrent of power supply

Info

Publication number
JPS57182224A
JPS57182224A JP56065387A JP6538781A JPS57182224A JP S57182224 A JPS57182224 A JP S57182224A JP 56065387 A JP56065387 A JP 56065387A JP 6538781 A JP6538781 A JP 6538781A JP S57182224 A JPS57182224 A JP S57182224A
Authority
JP
Japan
Prior art keywords
circuit
signal
peak
overcurrent
main current
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
JP56065387A
Other languages
Japanese (ja)
Other versions
JPH0415484B2 (en
Inventor
Nagato Sanuki
Ichiro Kitamura
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.)
Origin Electric Co Ltd
Original Assignee
Origin 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 Origin Electric Co Ltd filed Critical Origin Electric Co Ltd
Priority to JP56065387A priority Critical patent/JPS57182224A/en
Publication of JPS57182224A publication Critical patent/JPS57182224A/en
Publication of JPH0415484B2 publication Critical patent/JPH0415484B2/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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Control Of Voltage And Current In General (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To obtain a drooping characteristic which does not cause unstable operations, suh as hunting, etc., when an overcurrent is generated, by giving a hysteresis characteristic to a control signal produced based on a peak-hold detected value of an instantaneous value at a half cycle of the main current flowing through a semiconductor device for controlling electric power. CONSTITUTION:The main current of a semiconductor device for controlling electric power Tr is detected by a current detector Dc. The output of the detector Dc outputs an inhibit signal CL to a controlling circuit Av at an instantaneous value of a half cycle of the main current in an overcurrent inhibiting circuit. The circuit Av controls the device Tr with the signal CL, and outputs a constant voltage of a power source E to terminals T1 and T2 through a transformer T and rectifier elements D1, D2, L, and C. When the peak-hold detected value is higher than a reference level, the signal CL lowers the reference level to a lower level, and, when the peak-hold value exceeds the lower level, inhibits the delivery of a drive signal Ds from the circuit Av. In this way, a power unit having a drooping characteristic which does not cause any hunting can be obtained by utilizing the hysteresis characteristic between the two levels.
JP56065387A 1981-04-30 1981-04-30 Method for inhibiting overcurrent of power supply Granted JPS57182224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56065387A JPS57182224A (en) 1981-04-30 1981-04-30 Method for inhibiting overcurrent of power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56065387A JPS57182224A (en) 1981-04-30 1981-04-30 Method for inhibiting overcurrent of power supply

Publications (2)

Publication Number Publication Date
JPS57182224A true JPS57182224A (en) 1982-11-10
JPH0415484B2 JPH0415484B2 (en) 1992-03-18

Family

ID=13285518

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56065387A Granted JPS57182224A (en) 1981-04-30 1981-04-30 Method for inhibiting overcurrent of power supply

Country Status (1)

Country Link
JP (1) JPS57182224A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63174559A (en) * 1987-01-09 1988-07-19 Fujitsu Ltd Dc-dc converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63174559A (en) * 1987-01-09 1988-07-19 Fujitsu Ltd Dc-dc converter

Also Published As

Publication number Publication date
JPH0415484B2 (en) 1992-03-18

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