JPS56145771A - Gate firing unit for thyristor - Google Patents
Gate firing unit for thyristorInfo
- Publication number
- JPS56145771A JPS56145771A JP4688880A JP4688880A JPS56145771A JP S56145771 A JPS56145771 A JP S56145771A JP 4688880 A JP4688880 A JP 4688880A JP 4688880 A JP4688880 A JP 4688880A JP S56145771 A JPS56145771 A JP S56145771A
- Authority
- JP
- Japan
- Prior art keywords
- thyristor
- oscillation
- period
- switching element
- gate
- 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.)
- Granted
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
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Power Conversion In General (AREA)
- Thyristor Switches And Gates (AREA)
Abstract
PURPOSE:To obtain a gate pulse having stable and wide width from a thyristor form the initial oscillation of an oscillator by making the magnetizing direction of the magnetic core of the transformer during nonoscillation period unequilibrated with an electric current flowing through the primary winding of the transformer. CONSTITUTION:A resistance R1 is set with respect to a resistance R2 so that the currents become i1<i2 in nonoscillation period, and the direction and the magnitude of the magnetic flux are set to the points represented by phi1'. Since the rise of the signal voltage applied to the control terminal of the Q2 of switching elements Q1, Q2 is delayed from that of the signal voltage applied to the control terminal of the switching element Q1, the switching element Q1 is conducted faster than the switching element Q2 by a capacitor C2 at the initial period of the oscillation, and this operation is then repeated in the oscillations. The gate current is of the thyristor becomes as shown in (f) at the initial period of the oscillation, a gate pulse having a sufficiently broad width can be obtained from the initial period of the oscillation, and the damage of the thyristor can be prevented due to the local overheat of the thyristor caused by the infinitesimal gate current at the time of rising the main current of the thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4688880A JPS56145771A (en) | 1980-04-11 | 1980-04-11 | Gate firing unit for thyristor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4688880A JPS56145771A (en) | 1980-04-11 | 1980-04-11 | Gate firing unit for thyristor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56145771A true JPS56145771A (en) | 1981-11-12 |
| JPH022386B2 JPH022386B2 (en) | 1990-01-17 |
Family
ID=12759896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4688880A Granted JPS56145771A (en) | 1980-04-11 | 1980-04-11 | Gate firing unit for thyristor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56145771A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5376736A (en) * | 1976-12-20 | 1978-07-07 | Hitachi Ltd | Gate pulse generation circuit |
-
1980
- 1980-04-11 JP JP4688880A patent/JPS56145771A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5376736A (en) * | 1976-12-20 | 1978-07-07 | Hitachi Ltd | Gate pulse generation circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH022386B2 (en) | 1990-01-17 |
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