JPS5668275A - Detecting circuit for commutation failure of current type inverter - Google Patents
Detecting circuit for commutation failure of current type inverterInfo
- Publication number
- JPS5668275A JPS5668275A JP14470379A JP14470379A JPS5668275A JP S5668275 A JPS5668275 A JP S5668275A JP 14470379 A JP14470379 A JP 14470379A JP 14470379 A JP14470379 A JP 14470379A JP S5668275 A JPS5668275 A JP S5668275A
- Authority
- JP
- Japan
- Prior art keywords
- current
- output
- commutation failure
- input
- supplied
- 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
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
- H02M7/505—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 using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/515—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 using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
PURPOSE:To detect the occurrence of the commutation failure with a simple circuit by detecting the output currents of a power inverter circuit and the input current of a power rectifier, comparing both the detection signals and determining the commutation failure. CONSTITUTION:A current supplied from an AC power source 1 is supplied to a load 5 by converting it by a current type converter I including a power inverter 2, a reactor 3 and power rectifier 4, and is supplied to a load 5. Current transformers 6, 9 are mounted at the input and the output of the converter I, and a detection signal responsive to the input current and the output current can be obtained by the rectifiers 7, 10 and resistors 8, 11. They are inputted to a comparator 13 together with the low level bias signal from the potentiometer 12. Since the sum of the input signals of the comparator 13 at normal operating time, no output is produced, but since the sum of the input signals become negative at the commutation failure time, the detecting circuit 14 produces an output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14470379A JPS5668275A (en) | 1979-11-07 | 1979-11-07 | Detecting circuit for commutation failure of current type inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14470379A JPS5668275A (en) | 1979-11-07 | 1979-11-07 | Detecting circuit for commutation failure of current type inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5668275A true JPS5668275A (en) | 1981-06-08 |
Family
ID=15368309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14470379A Pending JPS5668275A (en) | 1979-11-07 | 1979-11-07 | Detecting circuit for commutation failure of current type inverter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5668275A (en) |
-
1979
- 1979-11-07 JP JP14470379A patent/JPS5668275A/en active Pending
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