JPS55100078A - Protection system of inverter - Google Patents
Protection system of inverterInfo
- 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
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
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)
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 |
-
1979
- 1979-01-23 JP JP556479A patent/JPS55100078A/en active Pending
Cited By (2)
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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