JPH04248316A - Overcurrent protector for power converter - Google Patents

Overcurrent protector for power converter

Info

Publication number
JPH04248316A
JPH04248316A JP509791A JP509791A JPH04248316A JP H04248316 A JPH04248316 A JP H04248316A JP 509791 A JP509791 A JP 509791A JP 509791 A JP509791 A JP 509791A JP H04248316 A JPH04248316 A JP H04248316A
Authority
JP
Japan
Prior art keywords
current
power converter
detecting means
overcurrent
detecting
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
JP509791A
Other languages
Japanese (ja)
Inventor
Akio Hirata
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
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 filed Critical Toshiba Corp
Priority to JP509791A priority Critical patent/JPH04248316A/en
Publication of JPH04248316A publication Critical patent/JPH04248316A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To protect an inverter in a power converter, e.g. an uninterruptible power supply, provided with a capacitor such as a filter capacitor on the output terminal side against overcurrent which may occur for same load power factor even if the output current is lower than a rated current.
CONSTITUTION: The overcurrent protector for power converter comprises a first current detecting means for detecting a current corresponding to the output current from a power converter 10, a second current detecting means 20 for detecting a current corresponding to the effective current component of output current from the power converter 10, and means 21 for producing an overcurrent protective signal when the first and second current detecting means 18, 20 have detection levels exceeding, respectively, over predetermined levels.
COPYRIGHT: (C)1992,JPO&Japio
JP509791A 1991-01-21 1991-01-21 Overcurrent protector for power converter Pending JPH04248316A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP509791A JPH04248316A (en) 1991-01-21 1991-01-21 Overcurrent protector for power converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP509791A JPH04248316A (en) 1991-01-21 1991-01-21 Overcurrent protector for power converter

Publications (1)

Publication Number Publication Date
JPH04248316A true JPH04248316A (en) 1992-09-03

Family

ID=11601880

Family Applications (1)

Application Number Title Priority Date Filing Date
JP509791A Pending JPH04248316A (en) 1991-01-21 1991-01-21 Overcurrent protector for power converter

Country Status (1)

Country Link
JP (1) JPH04248316A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8036585B2 (en) 2008-09-10 2011-10-11 Ricoh Company, Ltd. Lubricant supplying unit, process unit incorporating same, image forming apparatus incorporating same, and method of manufacturing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8036585B2 (en) 2008-09-10 2011-10-11 Ricoh Company, Ltd. Lubricant supplying unit, process unit incorporating same, image forming apparatus incorporating same, and method of manufacturing same

Similar Documents

Publication Publication Date Title
JPH0389622A (en) Circuit for monitoring connecting state of power transistor
JPH02119527A (en) Method for protecting electric substance to be protected from overcurrent
JPH04248316A (en) Overcurrent protector for power converter
JPH04312322A (en) Power factor controller
JPH01278228A (en) Auxiliary power source
JPH02179219A (en) Power supply device
JPH02101933A (en) Method and apparatus for protecting engine-starting auxiliary battery
JPH03133046A (en) Overcurrent protection circuit of photomultiplier
JPH0393474A (en) Protecting circuit for power converter
JPH03218269A (en) Overcurrent protective unit for inverter circuit
JPH04331464A (en) Converter
JPH044726A (en) Uninterruptive power unit
JPH02202376A (en) Normal/abnormal recognizing device for switching element
JPS6380779A (en) Inverter
JPH0362107A (en) Power unit with overload detecting function
JPS63245272A (en) Protecting circuit
JPH04261329A (en) Protective device for capacitor bank
JPH0442782A (en) Inverter circuit
JPS61293163A (en) Overvoltage protection circuit
JPH01295680A (en) Overcurrent protection method for inverter apparatus
JPH02101991A (en) Motor protective relay
JPH0469009A (en) Faulty feeder selector
JPH03276077A (en) Power source protecting circuit
JPH01110016A (en) Protection circuit for load controller
JPH04510A (en) Power supply device