JPS594943B2 - static power converter - Google Patents
static power converterInfo
- Publication number
- JPS594943B2 JPS594943B2 JP13894076A JP13894076A JPS594943B2 JP S594943 B2 JPS594943 B2 JP S594943B2 JP 13894076 A JP13894076 A JP 13894076A JP 13894076 A JP13894076 A JP 13894076A JP S594943 B2 JPS594943 B2 JP S594943B2
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- circuit
- gate
- control circuit
- thyristor
- 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.)
- Expired
Links
- 230000003068 static effect Effects 0.000 title claims description 9
- 238000001514 detection method Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000007423 decrease Effects 0.000 description 6
- 238000010304 firing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
Landscapes
- Power Conversion In General (AREA)
- Ac-Ac Conversion (AREA)
- Thyristor Switches And Gates (AREA)
Description
【発明の詳細な説明】
本発明は静止電力変換装置に関するもので、ゲート・ト
リガ電流を供給する直流電源電圧が低下した場合、ゲー
ト・トリガ信号を停止させ、ゲート電流の減少に起因す
る悪影響を未然に防止する ｊことを目的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a static power converter, which stops the gate trigger signal when the DC power supply voltage that supplies the gate trigger current decreases, thereby preventing the adverse effects caused by the decrease in the gate current. The purpose is to prevent such occurrences.
一般にサイリスタのゲート点弧電流は、ある一程のレベ
ルが必要であわ、その電流値ぱ供給する電源電圧に依存
する。Generally, the gate firing current of a thyristor requires a certain level, and the current value depends on the supply voltage.
そこで、電源電圧が低下すれば、ゲート点弧電流も必然
的にレベル低下を招き、サイリスタを十分に点弧出来な
いという事態ク が生ずる。そしてゲート点弧電流不足
のため、サイリスタのゲート電極での電流拡散速度が遅
れ、アノード電流の集中が起り電極内にてホット・スポ
ットが発生し、サイリスタ破壊の原因ともなる。そこで
本発明において、直流電源電圧の検知を０ することに
より、サイリスタの破壊を防ごうというものである。以
下本発明の一実施例に基づき添付図面とともに詳述する
。図において、１ぱ静止電力変換装置、２ぱ静止電力変
換装置内のサイリスタにゲート点弧電流を５ 与えるゲ
ート・トリガ回路、３ぱゲート・トリガ信号制御回路、
４ぱゲート・トリガ信号のタイミング回路、５は直流電
源電圧検知回路、６はゲート・トリガ回路の直流電源、
７、８ぱ固定抵抗器で直流電源電圧の検知レベルを設定
する。Therefore, if the power supply voltage decreases, the level of the gate firing current will inevitably decrease, resulting in a situation where the thyristor cannot be fired sufficiently. Due to the insufficient gate ignition current, the speed of current diffusion at the gate electrode of the thyristor is delayed, concentration of anode current occurs, and a hot spot is generated within the electrode, which may cause destruction of the thyristor. Therefore, the present invention attempts to prevent the destruction of the thyristor by setting the detection of the DC power supply voltage to 0. DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. In the figure, 1 is a static power converter, 2 is a gate trigger circuit that provides a gate firing current to the thyristor in the static power converter, 3 is a gate trigger signal control circuit,
4 a timing circuit for the gate trigger signal, 5 a DC power supply voltage detection circuit, 6 a DC power supply for the gate trigger circuit,
7 and 8 Set the detection level of the DC power supply voltage with the fixed resistor.
９ぱタブ イオード、１０は第１のトランジスタ、１１
ぱコンデンサ、１２、１３ぱ固定抵抗器である。9 is a patab diode, 10 is the first transistor, 11
12 and 13 are fixed resistors.
１４は直流電源で、直流電源６が、所定のゲート点弧電
流レベルを満足出来るだけの電圧値を保つている場合ぱ
、トランジスタ１０がオフ状態となる様・ に固定抵抗
器Ｔ、８の定数を設定する。14 is a DC power supply, and a fixed resistor T and a constant of 8 are set so that the transistor 10 is turned off when the DC power supply 6 maintains a voltage value sufficient to satisfy a predetermined gate firing current level. Set.
１５ぱゲート・パルス信号の停止信号をゲート・パルス
制御回路３へ送るゲート・パルス禁止回路であサ、１６
、ＩＴ、１８は固定抵抗器、１９ぱトランジスタである
。15 A gate pulse inhibit circuit that sends a stop signal of the gate pulse signal to the gate pulse control circuit 3, 16
, IT, 18 is a fixed resistor, and 19 is a transistor.
し ・ いま、直流電源６が低下したとすれば、トラン
ジスタ１０がオン状態となν、トランジスタ１９も同時
にオン状態となる。- Now, if the DC power supply 6 drops, the transistor 10 turns on (v) and the transistor 19 turns on at the same time.
すなわち直流電源６の低下に供ないトランジスタ１９の
出力に信号が検出され、それをゲート・パルス制御回路
３に送る５ ことによつてゲート・パルス信号を停止さ
せるのである。以上説明したように本発明によれば直流
電源の電圧低下に伴つてゲート・パルス信号を停止させ
電源条件の劣悪な他域等での悪影響を未然に防止出来る
効果を得ることができる。That is, a signal is detected at the output of the transistor 19 as the DC power source 6 decreases, and is sent to the gate pulse control circuit 3 to stop the gate pulse signal. As explained above, according to the present invention, it is possible to obtain the effect of stopping the gate pulse signal as the voltage of the DC power supply decreases, thereby preventing adverse effects in other regions where the power supply conditions are poor.
したがつて常に安定した動作をする静止電力変換装置を
提供することができる。Therefore, it is possible to provide a static power converter that always operates stably.
図面は本発明の一実施例を示す静止電力変換装置の回路
図である。
１・・・静止電力変換装置、２・・・サイリスタゲート
トリガ回路、３・・・ゲートパルス制御回路、４・・・
ゲートパルスタイミング信号回路、５・・・直流電源の
検知回路、１４・・・基準直流電圧電源、１５・・・ゲ
ートパルス禁止回路。The drawing is a circuit diagram of a static power conversion device showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Static power converter, 2... Thyristor gate trigger circuit, 3... Gate pulse control circuit, 4...
Gate pulse timing signal circuit, 5... DC power supply detection circuit, 14... Reference DC voltage power supply, 15... Gate pulse inhibition circuit.
Claims (1)
止電力変換回路とその制御回路を有し、前記制御回路は
前記サイリスタのゲートトリガ回路とゲートパルス制御
回路で構成され、前記ゲートトリガ回路に接続された直
流電源と、この直流電源に接続された直流電源電圧を検
知する直流電源電圧検知回路と、この直流電源電圧検知
回路の出力端子に接続され前記直流電源電圧が一定レベ
ル以下になると前記ゲートパルス制御回路へゲートパル
ス信号の停止信号を供給するゲートパルス禁止回路を備
えた静止電力変換装置。1 A static power conversion circuit including a thyristor that converts low frequency alternating current to high frequency, and a control circuit thereof, the control circuit consisting of a gate trigger circuit and a gate pulse control circuit of the thyristor, and connected to the gate trigger circuit. a DC power supply connected to the DC power supply; a DC power supply voltage detection circuit connected to the DC power supply for detecting the DC power supply voltage; A static power converter equipped with a gate pulse inhibit circuit that supplies a stop signal of a gate pulse signal to a control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13894076A JPS594943B2 (en) | 1976-11-17 | 1976-11-17 | static power converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13894076A JPS594943B2 (en) | 1976-11-17 | 1976-11-17 | static power converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5363528A JPS5363528A (en) | 1978-06-07 |
| JPS594943B2 true JPS594943B2 (en) | 1984-02-01 |
Family
ID=15233692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13894076A Expired JPS594943B2 (en) | 1976-11-17 | 1976-11-17 | static power converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS594943B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2703212B2 (en) * | 1984-02-20 | 1998-01-26 | 株式会社東芝 | How to protect cycloconverter |
-
1976
- 1976-11-17 JP JP13894076A patent/JPS594943B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5363528A (en) | 1978-06-07 |
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