JPS55100078A - Protection system of inverter - Google Patents

Protection system of inverter

Info

Publication number
JPS55100078A
JPS55100078A JP556479A JP556479A JPS55100078A JP S55100078 A JPS55100078 A JP S55100078A JP 556479 A JP556479 A JP 556479A JP 556479 A JP556479 A JP 556479A JP S55100078 A JPS55100078 A JP S55100078A
Authority
JP
Japan
Prior art keywords
inverter
circuit
detection circuit
short
thyristors
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
JP556479A
Other languages
Japanese (ja)
Inventor
Toshio Tanaka
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
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP556479A priority Critical patent/JPS55100078A/en
Publication of JPS55100078A publication Critical patent/JPS55100078A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To ignite all of the thyristors and the short-circuit thyristors of the inverter and to interrupt the input before the inverter reaches the commutation failure by a method wherein a control power source abnormality detection circuit is installed in the inverter.
CONSTITUTION: When an abnormality occurs in the control power source 41, then, the control power source abnormality detection circuit 51 detects it immediately and emits the command for generating the ignition pulse of all main thyristors 11∼ 14 and the short-circuit thyristor 8 in the inverter A, to the commutation failure detection circuit 10. The commutation failure detection circuit 10 emits the pulse as well as it emits the pulse when commutation failure is detected based on the command and ignites simultaneously the main thyristors 11∼14 of the inverter A through the OR circuits 43∼46 in conjunction therewith, it ignites the short-circuit thyristor 8. When the main thyristors 11∼14 and the short-circuit thyristor 8 are put into the continuity state, then, the discharge current from the smoothing capacitor 5 is shunted through the reactors 6, 7 and also the circuit breaker is opened by means of the detection circuit 10.
COPYRIGHT: (C)1980,JPO&Japio
JP556479A 1979-01-23 1979-01-23 Protection system of inverter Pending JPS55100078A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP556479A JPS55100078A (en) 1979-01-23 1979-01-23 Protection system of inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP556479A JPS55100078A (en) 1979-01-23 1979-01-23 Protection system of inverter

Publications (1)

Publication Number Publication Date
JPS55100078A true JPS55100078A (en) 1980-07-30

Family

ID=11614694

Family Applications (1)

Application Number Title Priority Date Filing Date
JP556479A Pending JPS55100078A (en) 1979-01-23 1979-01-23 Protection system of inverter

Country Status (1)

Country Link
JP (1) JPS55100078A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6318989A (en) * 1986-07-08 1988-01-26 Mitsubishi Electric Corp Frequency converter
JPH11178243A (en) * 1997-12-16 1999-07-02 Mitsubishi Electric Corp Uninterruptible power supply unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6318989A (en) * 1986-07-08 1988-01-26 Mitsubishi Electric Corp Frequency converter
JPH11178243A (en) * 1997-12-16 1999-07-02 Mitsubishi Electric Corp Uninterruptible power supply unit

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