JPS55166481A - Preventive device for inverter's commutation failure - Google Patents
Preventive device for inverter's commutation failureInfo
- Publication number
- JPS55166481A JPS55166481A JP7420179A JP7420179A JPS55166481A JP S55166481 A JPS55166481 A JP S55166481A JP 7420179 A JP7420179 A JP 7420179A JP 7420179 A JP7420179 A JP 7420179A JP S55166481 A JPS55166481 A JP S55166481A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- thyristor
- voltage
- comparator
- 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 permit the prevention of commutation failures by connecting the series-circuit of a resistor and a voltage regulator diode to a thyristor in anti-parallel wherein both ends of the voltage regulator diode is connected to a comparator to form a reverse voltage detection circuit and controlling is performed based on this circuit. CONSTITUTION:The series circuit of a resistor 15 and a voltage regulator diode 16 is connected across a thyristor 5 to pick up potential alteration across the voltage regulartor diode 16, If a comparator 17 sends an output signal only when the signal level at an input terminal is lower than zero voltage potential, a signal is outputted from the comparator 17 only the duration of reverse bias at the time of thyristor's 5 commutation. With the output 101 in each reverse voltage detection circuit 18 synchronized with the commutating signal of the thyristor corresponding to the output and switched by an analog switch 19, the reverse voltage signal of each thyristor 3-8 will be obtained as a series signal. A commutating signal 103 in a gate controlling circuit 20 is inputted to a timing circuit 21 to generate a switching signal 104.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7420179A JPS55166481A (en) | 1979-06-12 | 1979-06-12 | Preventive device for inverter's commutation failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7420179A JPS55166481A (en) | 1979-06-12 | 1979-06-12 | Preventive device for inverter's commutation failure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55166481A true JPS55166481A (en) | 1980-12-25 |
Family
ID=13540327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7420179A Pending JPS55166481A (en) | 1979-06-12 | 1979-06-12 | Preventive device for inverter's commutation failure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55166481A (en) |
-
1979
- 1979-06-12 JP JP7420179A patent/JPS55166481A/en active Pending
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