JPS57202878A - Protecting device for inverter - Google Patents

Protecting device for inverter

Info

Publication number
JPS57202878A
JPS57202878A JP56090078A JP9007881A JPS57202878A JP S57202878 A JPS57202878 A JP S57202878A JP 56090078 A JP56090078 A JP 56090078A JP 9007881 A JP9007881 A JP 9007881A JP S57202878 A JPS57202878 A JP S57202878A
Authority
JP
Japan
Prior art keywords
overvoltage
output
voltage
operational amplifier
load
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
JP56090078A
Other languages
Japanese (ja)
Inventor
Tetsuo Morikawa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56090078A priority Critical patent/JPS57202878A/en
Publication of JPS57202878A publication Critical patent/JPS57202878A/en
Pending 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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE:To raise the set voltage value of an operational amplifier which detects an output overvoltage in response to a load current by providing an adder which adds a voltage signal in response to an overvoltage set value at no load time. CONSTITUTION:An operational amplifier 9c which operates as an adder adds a voltage signal V2 responsive to a load current to the set overvoltage value V1 of an operational amplifier 9b at no load time, and the added output V0 is given as a set voltage value of the operational amplifier 9b. Even when the output voltage of the inverter 1 is, accordingly, raised to correct the impedance voltage drop of a transmission line to a load end, the set voltage value of the amplifier 9b which detects the output overvoltage of an inverter 1 rises in response to the correction of the output voltage, and an optimum overvoltage set can be obtained irrespective of a distance between a power source and a load.
JP56090078A 1981-06-08 1981-06-08 Protecting device for inverter Pending JPS57202878A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56090078A JPS57202878A (en) 1981-06-08 1981-06-08 Protecting device for inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56090078A JPS57202878A (en) 1981-06-08 1981-06-08 Protecting device for inverter

Publications (1)

Publication Number Publication Date
JPS57202878A true JPS57202878A (en) 1982-12-11

Family

ID=13988482

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56090078A Pending JPS57202878A (en) 1981-06-08 1981-06-08 Protecting device for inverter

Country Status (1)

Country Link
JP (1) JPS57202878A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980043923A (en) * 1996-12-05 1998-09-05 구자홍 Input voltage detection protection circuit of inverter circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980043923A (en) * 1996-12-05 1998-09-05 구자홍 Input voltage detection protection circuit of inverter circuit

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