JPS5765277A - Protective device for overcurrent in pulse width modulation type bridge inverter - Google Patents

Protective device for overcurrent in pulse width modulation type bridge inverter

Info

Publication number
JPS5765277A
JPS5765277A JP55140279A JP14027980A JPS5765277A JP S5765277 A JPS5765277 A JP S5765277A JP 55140279 A JP55140279 A JP 55140279A JP 14027980 A JP14027980 A JP 14027980A JP S5765277 A JPS5765277 A JP S5765277A
Authority
JP
Japan
Prior art keywords
overcurrent
circuit
pulse width
width modulation
gate turn
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
JP55140279A
Other languages
Japanese (ja)
Inventor
Yasuo Yokoi
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.)
NIHON INBAATA KK
NIPPON INBAATA KK
Original Assignee
NIHON INBAATA KK
NIPPON INBAATA KK
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 NIHON INBAATA KK, NIPPON INBAATA KK filed Critical NIHON INBAATA KK
Priority to JP55140279A priority Critical patent/JPS5765277A/en
Publication of JPS5765277A publication Critical patent/JPS5765277A/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

Abstract

PURPOSE:To prevent the breakdown of a switching element of the inverter, and to obtain stable operation by using an overcurrent control pulse width modulation system, employing a gate turn-off type thyristor as the switching element and mounting an overcurrent protective circuit. CONSTITUTION:DC voltage is obtained by means of a rectifying circuit consisting of diodes D7-D12 and a capacitor C from input terminals R, S, T connected to a commercial three-phase AC power supply. The bridge inverter is constituted in such a manner that the terminals J, K of a two terminal circuit 1 for protecting overcurrents are connected to a DC supply line, and a parallel circuit of the gate turn-off type thyristors GTO1-GTO6 and feedback diodes D1-D6 is connected between the terminal K at the output side of the two terminal circuit 1 and three-phase AC output terminals U, V, W. Each gate turn-off type thyristor GTO1-GTO6 is severally controlled by means of ignition control circuits A1-A6.
JP55140279A 1980-10-06 1980-10-06 Protective device for overcurrent in pulse width modulation type bridge inverter Pending JPS5765277A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55140279A JPS5765277A (en) 1980-10-06 1980-10-06 Protective device for overcurrent in pulse width modulation type bridge inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55140279A JPS5765277A (en) 1980-10-06 1980-10-06 Protective device for overcurrent in pulse width modulation type bridge inverter

Publications (1)

Publication Number Publication Date
JPS5765277A true JPS5765277A (en) 1982-04-20

Family

ID=15265074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55140279A Pending JPS5765277A (en) 1980-10-06 1980-10-06 Protective device for overcurrent in pulse width modulation type bridge inverter

Country Status (1)

Country Link
JP (1) JPS5765277A (en)

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