JPS6168689U - - Google Patents
Info
- Publication number
- JPS6168689U JPS6168689U JP15290584U JP15290584U JPS6168689U JP S6168689 U JPS6168689 U JP S6168689U JP 15290584 U JP15290584 U JP 15290584U JP 15290584 U JP15290584 U JP 15290584U JP S6168689 U JPS6168689 U JP S6168689U
- Authority
- JP
- Japan
- Prior art keywords
- section
- output signal
- inverter
- thyristor
- voltage detection
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Protection Of Static Devices (AREA)
Description
第１図は本考案の実施例を示す回路図、第２図
は従来のサイリスタ保護回路を示す回路図である
。
１…インバータ、２…命令部、３…ゲート制御
部、４…電圧検出部、７…出力部、７１…ナンド
回路、７２…単安定マルチバイブレータ、８１〜
８６…オア回路。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional thyristor protection circuit. DESCRIPTION OF SYMBOLS 1... Inverter, 2... Command part, 3... Gate control part, 4... Voltage detection part, 7... Output part, 71... NAND circuit, 72... Monostable multivibrator, 8 1 -
8 6 ...OR circuit.
Claims (1)
この命令部よりの始動命令信号が入力している間
所定のタイミングでインバータのサイリスタゲー
トを開くための出力信号を発するゲート制御部と
、前記インバータの入力電圧を検出して検出電圧
が短絡状態に対応するものであるときに出力信号
を発する電圧検出部と、この電圧検出部よりの出
力信号及び前記命令部よりの始動命令信号を入力
条件として一定時間出力信号を発する出力部と、
前記インバータの各サイリスタに夫々対応して設
けられ、前記出力部よりの出力信号又はゲート制
御部よりの出力信号の少なくとも一方を入力条件
として、対応するサイリスタにゲート信号を供給
する論理回路とを有してなることを特徴とするイ
ンバータのサイリスタ保護回路。 an instruction section for instructing the inverter to start and stop;
A gate control section that issues an output signal to open the thyristor gate of the inverter at a predetermined timing while a starting command signal from the instruction section is input, and a gate control section that detects the input voltage of the inverter and detects that the detected voltage is in a short-circuit state. a voltage detection section that issues an output signal when the voltage detection section corresponds to the voltage detection section; an output section that issues an output signal for a certain period of time using the output signal from the voltage detection section and the start command signal from the instruction section as input conditions;
A logic circuit is provided corresponding to each thyristor of the inverter and supplies a gate signal to the corresponding thyristor using at least one of an output signal from the output section or an output signal from the gate control section as an input condition. A thyristor protection circuit for an inverter, which is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15290584U JPS6168689U (en) | 1984-10-09 | 1984-10-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15290584U JPS6168689U (en) | 1984-10-09 | 1984-10-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6168689U true JPS6168689U (en) | 1986-05-10 |
Family
ID=30710950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15290584U Pending JPS6168689U (en) | 1984-10-09 | 1984-10-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6168689U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0398420A (en) * | 1988-10-24 | 1991-04-24 | Fuji Electric Co Ltd | Arm short-circuit detector for power converter |
-
1984
- 1984-10-09 JP JP15290584U patent/JPS6168689U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0398420A (en) * | 1988-10-24 | 1991-04-24 | Fuji Electric Co Ltd | Arm short-circuit detector for power converter |
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