JP2002095239A - Gate control circuit of self-arc-extinguishing element - Google Patents
Gate control circuit of self-arc-extinguishing elementInfo
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- JP2002095239A JP2002095239A JP2000274804A JP2000274804A JP2002095239A JP 2002095239 A JP2002095239 A JP 2002095239A JP 2000274804 A JP2000274804 A JP 2000274804A JP 2000274804 A JP2000274804 A JP 2000274804A JP 2002095239 A JP2002095239 A JP 2002095239A
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- Prior art keywords
- self
- extinguishing element
- switch
- gate
- voltage
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自己消弧形素子の
ゲート制御回路に関する。The present invention relates to a gate control circuit for a self-extinguishing element.
【０００２】[0002]
【従来の技術】図１３は、従来の自己消弧型素子のゲー
ト制御回路、図１４は従来のゲート制御回路における自
己消弧型素子の各部の波形とスイッチの状態を表す図で
ある。2. Description of the Related Art FIG. 13 is a diagram showing a gate control circuit of a conventional self-extinguishing element, and FIG. 14 is a diagram showing waveforms and switches of respective parts of the self-extinguishing element in a conventional gate control circuit.
【０００３】図１３に示すように、従来のゲート制御回
路は、自己消弧型素子Ｓ１をオンとするための正の電圧
を持つゲート電圧電源Ｖｏｎと、自己消弧型素子Ｓ１を
オフとするための負の電圧を持つゲート電圧電源Ｖｏｆ
ｆと、自己消弧型素子Ｓ１のゲート端子に正の電圧Ｖｏ
ｎと負の電圧Ｖｏｆｆとを切り替えて出力する切り替え
スイッチＳＷと、ゲート抵抗Ｒｇとで構成されている。As shown in FIG. 13, the conventional gate control circuit turns off the self-turn-off element S1 and a gate voltage power supply Von having a positive voltage for turning on the self-turn-off element S1. Voltage power supply Vof having a negative voltage for
f and a positive voltage Vo applied to the gate terminal of the self-extinguishing element S1.
It comprises a switch SW for switching and outputting between n and a negative voltage Voff, and a gate resistor Rg.
【０００４】自己消弧型素子Ｓ１をターンオンする際
は、切り替えスイッチＳＷを正の電源Ｖｏｎ側とし、自
己消弧型素子Ｓ１のゲート端子にエミッタ端子に対して
正の電圧を印加する。また、自己消弧型素子Ｓ１をター
ンオフする際は切り替えスイッチを負の電源Ｖｏｆｆ側
とし、ゲート端子にエミッタ端子に対して負の電圧を印
加することにより、自己消弧型素子Ｓ１のオン・オフを
制御する。When the self-turn-off device S1 is turned on, the switch SW is set to the positive power supply Von side, and a positive voltage is applied to the gate terminal of the self-turn-off device S1 with respect to the emitter terminal. When the self-extinguishing element S1 is turned off, the switch is set to the negative power supply Voff side, and a negative voltage is applied to the gate terminal to the emitter terminal to turn on / off the self-extinguishing element S1. Control.
【０００５】このように、従来はゲート抵抗Ｒｇを時間
的に変更することはなく、固定値で自己消弧型素子Ｓ１
のゲートを制御していた。As described above, conventionally, the gate resistance Rg is not changed over time, and the self-extinguishing element S1 is fixed at a fixed value.
Had control of the gate.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、従来の
自己消弧型素子のゲート制御回路には、次のような問題
点がある。自己消弧型素子がターンオフする際に、ゲー
ト抵抗が挿入されていた場合、自己消弧型素子のゲート
−エミッタ間の接合容量を充電するためのミラー時間が
長くなり、スイッチング時間を長くすることになる。こ
れにより、電圧型自励式変換器で必要となる上下アーム
ともにオフゲート信号が与えられる期間であるデッドタ
イムや自己消弧型素子の最小のオン時間の幅が長くな
り、結果として、電圧型自励式変換器が出力できる交流
電圧が低下するという問題があり、変換器の容量低下、
容量あたりの価格の増加を招いていた。However, the conventional gate control circuit of the self-extinguishing type element has the following problems. If a gate resistor is inserted when the self-extinguishing device is turned off, the mirror time for charging the junction capacitance between the gate and the emitter of the self-extinguishing device becomes longer, and the switching time becomes longer. become. This increases the width of the dead time during which the off-gate signal is applied to both the upper and lower arms required for the voltage-type self-excited converter and the minimum on-time of the self-extinguishing element. There is a problem that the AC voltage that can be output by the converter is reduced.
This has led to an increase in price per capacity.
【０００７】また、ゲート抵抗なし、またはゲート抵抗
を固定値で小さい値とした場合、自己消弧型素子のター
ンオン、ターンオフ時の電圧、電流のｄｖ／ｄｔ、ｄｉ
／ｄｔが大となり、電磁誘導ノイズを発生させる可能性
があった。When there is no gate resistance or when the gate resistance is a fixed small value, the voltage and current dv / dt and di at the time of turning on and off the self-extinguishing element
/ Dt becomes large, and electromagnetic induction noise may be generated.
【０００８】本発明は、従来のこのような点に鑑み為さ
れたもので、自己消弧型素子のゲート抵抗を変化させる
ことにより、自己消弧型素子のスイッチング時間を短縮
することができるようにした自己消弧型素子のゲート制
御回路を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is possible to reduce the switching time of a self-extinguishing element by changing the gate resistance of the self-extinguishing element. It is an object of the present invention to provide a gate control circuit for a self-extinguishing type element.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に、請求項１に記載の本発明は、ゲート端子に印加され
る電圧によってオン・オフ状態を制御することが可能な
自己消弧型素子と、自己消弧型素子のエミッタ端子に対
して正の電圧と負の電圧を持つ電源と、正の電圧を持つ
電源と負の電圧を持つ電源に接続され正または負の電圧
の出力を切り替える切り替えスイッチと、切り替えスイ
ッチによって出力される正または負の電圧を、ゲート抵
抗を介して自己消弧型素子のゲート端子に印加し、自己
消弧型素子のオン・オフを制御する自己消弧型素子のゲ
ート制御回路において、ゲート抵抗を介さずに負の電圧
を前記自己消弧型素子のゲート端子に印加する第２のス
イッチと、自己消弧型素子のコレクタ−エミッタ間電圧
を検出する手段と、この手段により検出されたコレクタ
−エミッタ間電圧の検出値と任意の設定値とを比較する
比較手段とを備え、自己消弧型素子のターンオフ時に、
第２のスイッチをオンとして、ゲート抵抗を介さずに負
の電圧をゲート端子に印加して自己消弧型素子をターン
オフし、自己消弧型素子のコレクタ−エミッタ間電圧が
任意の設定値以上になった際に、比較手段の出力により
第２のスイッチをオフとし、ゲート抵抗を介して負の電
圧をゲート端子に印加するようにしたことを特徴とす
る。In order to achieve the above object, the present invention according to claim 1 is a self-extinguishing type in which the on / off state can be controlled by a voltage applied to a gate terminal. Connected to the element, the power supply with positive voltage and negative voltage with respect to the emitter terminal of the self-extinguishing element, the power supply with positive voltage and the power supply with negative voltage, and output the positive or negative voltage. A self-extinguishing device that controls the on / off of the self-extinguishing element by applying a positive or negative voltage output by the selecting switch to the gate terminal of the self-extinguishing element via a gate resistor A gate switch for applying a negative voltage to the gate terminal of the self-extinguishing element without passing through a gate resistor; and detecting a collector-emitter voltage of the self-extinguishing element. Means Detected collector This means - and a comparator means for comparing the detected value with any set value of the emitter voltage, upon turning off the self extinguishing type switching elements,
When the second switch is turned on, a negative voltage is applied to the gate terminal without passing through the gate resistor to turn off the self-extinguishing element, and the collector-emitter voltage of the self-extinguishing element is equal to or higher than an arbitrary set value. In this case, the second switch is turned off by the output of the comparing means, and a negative voltage is applied to the gate terminal via the gate resistor.
【００１０】請求項１に記載の本発明によれば、ゲート
抵抗を介さずに自己消弧型素子のゲート−エミッタ間の
接合容量を充電するため、ゲート−エミッタ間の接合容
量を充電する時間であるミラー時間が短くなり、スイッ
チング時間が短くなる。また、自己消弧型素子のコレク
タ−エミッタ間電圧が任意の電圧値になった後、ゲート
抵抗を介して自己消弧型素子のゲート端子に負のゲート
電圧を印加することにより、以後のコレクターエミッタ
間電圧の立ち上りｄｖ／ｄｔ、および自己消弧型素子の
通電電流の立下りｄｉ／ｄｔが緩やかとなり、電磁誘導
ノイズの発生を抑えることができる。According to the first aspect of the present invention, since the junction capacitance between the gate and the emitter of the self-extinguishing element is charged without the intervention of the gate resistance, the time for charging the junction capacitance between the gate and the emitter is provided. Is shorter, and the switching time is shorter. Further, after the collector-emitter voltage of the self-extinguishing element reaches an arbitrary voltage value, a negative gate voltage is applied to the gate terminal of the self-extinguishing element via a gate resistor, so that the subsequent collector The rise dv / dt of the emitter-to-emitter voltage and the fall di / dt of the energizing current of the self-extinguishing element become gentle, and the occurrence of electromagnetic induction noise can be suppressed.
【００１１】請求項２に記載の本発明は、ゲート端子に
印加される電圧によってオン・オフ状態を制御すること
が可能な自己消弧型素子と、自己消弧型素子のエミッタ
端子に対して正の電圧と負の電圧を持つ電源と、正の電
圧を持つ電源と負の電圧を持つ電源に接続され正または
負の電圧の出力を切り替える切り替えスイッチと、切り
替えスイッチによって出力される正または負の電圧を、
ゲート抵抗を介して自己消弧型素子のゲート端子に印加
し、己消弧型素子のオン・オフを制御する自己消弧型素
子のゲート制御回路において、ゲート抵抗を介さずに負
の電圧を自己消弧型素子のゲート端子に印加する第２の
スイッチと、自己消弧型素子のコレクタ−エミッタ間電
圧を検出する手段と、この手段により検出されたコレク
タ−エミッタ間電圧の検出値と任意の設定値とを比較す
る比較手段と、この比較手段によりコレクタ−エミッタ
間電圧の検出値が任意の設定値を超えたことを検出した
出力を任意の時間遅延させる遅延手段とを備え、自己消
弧型素子のターンオフ時に、第２のスイッチをオンとし
て、ゲート抵抗を介さずに負の電圧をゲート端子に印加
して自己消弧型素子をターンオフし、自己消弧型素子の
コレクターエミッタ間電圧が任意の設定値を超えた後の
任意の時間経過後に、遅延手段の出力により第２のスイ
ッチをオフとし、ゲート抵抗を介して負の電圧をゲート
端子に印加するようにしたことを特徴とする。According to a second aspect of the present invention, there is provided a self-extinguishing element capable of controlling an on / off state by a voltage applied to a gate terminal, and an emitter terminal of the self-extinguishing element. A power supply having a positive voltage and a negative voltage, a changeover switch connected to a power supply having a positive voltage and a power supply having a negative voltage to switch the output of a positive or negative voltage, and a positive or negative output from the changeover switch The voltage of
In the gate control circuit of the self-extinguishing element, which applies a voltage to the gate terminal of the self-extinguishing element via a gate resistor and controls the ON / OFF of the self-extinguishing element, a negative voltage is applied without passing through the gate resistance. A second switch applied to the gate terminal of the self-extinguishing element, a means for detecting a collector-emitter voltage of the self-extinguishing element, and a detection value of the collector-emitter voltage detected by the means and an optional value. And a delay means for delaying an output of detecting that the detected value of the collector-emitter voltage exceeds an arbitrary set value for an arbitrary time by the comparing means. When the arc-type element is turned off, the second switch is turned on, a negative voltage is applied to the gate terminal without passing through the gate resistor to turn off the self-arc-extinguishing element, and the collector emitter of the self-arc-extinguishing element is turned off. The second switch is turned off by an output of the delay means after an elapse of an arbitrary time after the inter-voltage exceeds an arbitrary set value, and a negative voltage is applied to the gate terminal via the gate resistor. Features.
【００１２】請求項２に記載の本発明によっても、請求
項１に記載の本発明の場合と同様な効果が得られる。According to the second aspect of the present invention, the same effect as that of the first aspect of the present invention can be obtained.
【００１３】請求項３に記載の本発明は、ゲート端子に
印加される電圧によってオン・オフ状態を制御すること
が可能な自己消弧型素子と、自己消弧型素子のエミッタ
端子に対して正の電圧と負の電圧を持つ電源と、正の電
圧を持つ電源と負の電圧を持つ電源に接続され正または
負の電圧の出力を切り替える切り替えスイッチと、切り
替えスイッチによって出力される正または負の電圧を、
ゲート抵抗を介して自己消弧型素子のゲート端子に印加
し、自己消弧型素子のオン・オフを制御する自己消弧型
素子のゲート制御回路において、ゲート抵抗を介さずに
負の電圧を自己消弧型素子のゲート端子に印加する第２
のスイッチと、この第２のスイッチがオンとなった後の
任意の時間経過後に第２のスイッチをオフとする手段と
を備え、自己消弧型素子のターンオフ時に、第２のスイ
ッチをオンとして、ゲート抵抗を介さずに負の電圧をゲ
ート端子に印加して自己消弧型素子をターンオフし、任
意の時間経過後に、第２のスイッチをオフとし、ゲート
抵抗を介して負の電圧をゲート端子に印加するようにし
たことを特徴とする。According to a third aspect of the present invention, there is provided a self-extinguishing element capable of controlling an on / off state by a voltage applied to a gate terminal, and an emitter terminal of the self-extinguishing element. A power supply having a positive voltage and a negative voltage, a changeover switch connected to a power supply having a positive voltage and a power supply having a negative voltage to switch the output of a positive or negative voltage, and a positive or negative output from the changeover switch The voltage of
In the gate control circuit of the self-extinguishing element, which applies a voltage to the gate terminal of the self-extinguishing element via a gate resistor to control the ON / OFF of the self-extinguishing element, a negative voltage is applied without passing through the gate resistance. Second applied to the gate terminal of the self-extinguishing element
And a means for turning off the second switch after an elapse of an arbitrary time after the second switch is turned on. When the self-extinguishing element is turned off, the second switch is turned on. A self-turn-off device is turned off by applying a negative voltage to the gate terminal without passing through a gate resistor, and after an elapse of an arbitrary time, the second switch is turned off, and the negative voltage is gated through the gate resistor. It is characterized in that it is applied to a terminal.
【００１４】請求項３に記載の本発明によっても、請求
項１に記載の本発明の場合と同様な効果が得られる。According to the third aspect of the present invention, the same effect as in the case of the first aspect of the present invention can be obtained.
【００１５】請求項４に記載の本発明は、請求項１乃至
請求項３のいずれかに記載の自己消弧型素子のゲート制
御回路において、負の電圧を持つ電源と第２のスイッチ
との間、及び第２のスイッチと自己消弧型素子のゲート
端子との間のうちのすくなくとも一方の間にゲート抵抗
より小さい第２の抵抗を挿入し、ゲート抵抗を介さずに
負の電圧をゲート端子に印加する場合に第２の抵抗を介
して負の電圧をゲート端子に印加するようにしたことを
特徴とする。According to a fourth aspect of the present invention, in the gate control circuit of the self-extinguishing element according to any one of the first to third aspects, a power supply having a negative voltage and a second switch are connected. A second resistor smaller than the gate resistance is inserted between at least one of the second switch and the gate terminal of the self-turn-off device, and a negative voltage is gated without passing through the gate resistor. When the voltage is applied to the terminal, a negative voltage is applied to the gate terminal via the second resistor.
【００１６】請求項４に記載の本発明によれば、ゲート
抵抗より小さい第２の抵抗を用いたことにより、ゲート
抵抗が小さいためミラー時間が短くなり、スイッチング
時間が短くなる。また、自己消弧型素子のコレクタ−エ
ミッタ間電圧の立ち上りｄｖ／ｄｔ、および自己消弧型
素子の通電電流の立下りｄｉ／ｄｔが緩やかとなり、電
磁誘導ノイズの発生を抑えることができる。According to the fourth aspect of the present invention, since the second resistor smaller than the gate resistance is used, the mirror time is shortened because the gate resistance is small, and the switching time is shortened. In addition, the rising dv / dt of the collector-emitter voltage of the self-extinguishing element and the falling di / dt of the current flowing through the self-extinguishing element become gentle, so that generation of electromagnetic induction noise can be suppressed.
【００１７】請求項５に記載の本発明は、自己消弧型素
子がターンオフ後、任意の時間後に再び第２のスイッチ
をオンとするようにしたことを特徴とする。The invention according to claim 5 is characterized in that the second switch is turned on again after an arbitrary time after the self-extinguishing element is turned off.
【００１８】請求項５に記載の本発明によれば、自己消
弧型素子のオフ中に外部からの影響によるゲート電圧の
変動を小さくすることができ、自己消弧型素子の誤転弧
を防ぐことができる。According to the fifth aspect of the present invention, it is possible to reduce the fluctuation of the gate voltage due to the external influence while the self-extinguishing type element is off, and to prevent the false arcing of the self-extinguishing type element. Can be prevented.
【００１９】請求項６に記載の本発明は、ゲート端子に
印加される電圧によってオン・オフ状態を制御すること
が可能な自己消弧型素子と、自己消弧型素子のエミッタ
端子に対して正の電圧と負の電圧を持つ電源と、正の電
圧を持つ電源と負の電圧を持つ電源に接続され正または
負の電圧の出力を切り替える切り替えスイッチと、切り
替えスイッチによって出力される正または負の電圧を、
ゲート抵抗を介して自己消弧型素子のゲート端子に印加
し、自己消弧型素子のオン・オフを制御する自己消弧型
素子のゲート制御回路において、ゲート抵抗を介さずに
正の電圧を自己消弧型素子のゲート端子に印加する第３
のスイッチと、自己消弧型素子の通電電流を検出する手
段と、この手段により検出された通電電流の検出値と任
意の設定値とを比較する比較手段とを備え、自己消弧型
素子のターンオン時に、自己消弧型素子の通電電流が任
意の設定値以上になった際に、比較手段の出力により前
記第３のスイッチをオンとしてゲート抵抗を介さずに正
の電圧をゲート端子に印加するようにしたことを特徴と
する。According to a sixth aspect of the present invention, there is provided a self-extinguishing element capable of controlling an on / off state by a voltage applied to a gate terminal, and an emitter terminal of the self-extinguishing element. A power supply having a positive voltage and a negative voltage, a changeover switch connected to a power supply having a positive voltage and a power supply having a negative voltage to switch the output of a positive or negative voltage, and a positive or negative output from the changeover switch The voltage of
In a gate control circuit of a self-extinguishing element, which applies a voltage to the gate terminal of the self-extinguishing element via a gate resistor and controls on / off of the self-extinguishing element, a positive voltage is applied without passing through the gate resistance Third applied to the gate terminal of the self-extinguishing element
Switch, means for detecting the energizing current of the self-extinguishing element, and comparing means for comparing the detected value of the energizing current detected by this means with an arbitrary set value. At the time of turn-on, when the current flowing through the self-extinguishing type element exceeds an arbitrary set value, the third switch is turned on by the output of the comparing means to apply a positive voltage to the gate terminal without passing through the gate resistor. It is characterized by doing.
【００２０】請求項６に記載の本発明によれば、最初に
ゲート抵抗をある程度の値でターンオンし、自己消弧型
素子のコレクタ−エミッタ間電圧の立下りｄｖ／ｄｔ、
および自己消弧型素子の通電電流の立ち上りｄｉ／ｄｔ
を抑制することができ、電磁誘導ノイズの発生を抑える
ことができる。また、自己消弧型素子の通電電流が任意
の値以上になった際に、ゲート抵抗を介さずに自己消弧
型素子のゲート端子に正の電圧を印加するため、自己消
弧型素子のゲート−エミッタ間の接合容量を短時間で充
電することができ、自己消弧型素子のゲート−エミッタ
間の接合容量を充電する時間であるミラー時間を短縮
し、スイッチング時間を短くできる。According to the present invention, first, the gate resistance is turned on to a certain value, and the falling dv / dt of the collector-emitter voltage of the self-extinguishing element is obtained.
And rise di / dt of the conduction current of the self-extinguishing element
And the occurrence of electromagnetic induction noise can be suppressed. In addition, when the current flowing through the self-extinguishing element exceeds a given value, a positive voltage is applied to the gate terminal of the self-extinguishing element without passing through a gate resistor. The junction capacitance between the gate and the emitter can be charged in a short time, the mirror time for charging the junction capacitance between the gate and the emitter of the self-extinguishing element can be shortened, and the switching time can be shortened.
【００２１】請求項７に記載の本発明は、ゲート端子に
印加される電圧によってオン・オフ状態を制御すること
が可能な自己消弧型素子と、自己消弧型素子のエミッタ
端子に対して正の電圧と負の電圧を持つ電源と、正の電
圧を持つ電源と負の電圧を持つ電源に接続され正または
負の電圧の出力を切り替える切り替えスイッチと、切り
替えスイッチによって出力される正または負の電圧を、
ゲート抵抗を介して自己消弧型素子のゲート端子に印加
し、自己消弧型素子のオン・オフを制御する自己消弧型
素子のゲート制御回路において、ゲート抵抗を介さずに
正の電圧を自己消弧型素子のゲート端子に印加する第３
のスイッチと、自己消弧型素子の通電電流を検出する手
段と、この手段により検出された通電電流の検出値と任
意の設定値とを比較する比較手段と、この比較手段によ
り通電電流の検出値が任意の設定値を超えたことを検出
した出力を任意の時間遅延させる遅延手段とを備え、自
己消弧型素子のターンオン時に、自己消弧型素子の通電
電流が任意の設定値を超えた後の任意の時間経過後に、
遅延手段の出力により第３のスイッチをオンとし、ゲー
ト抵抗を介さずに正の電圧をゲート端子に印加するよう
にしたことを特徴とする。According to a seventh aspect of the present invention, there is provided a self-extinguishing element capable of controlling an on / off state by a voltage applied to a gate terminal, and an emitter terminal of the self-extinguishing element. A power supply having a positive voltage and a negative voltage, a changeover switch connected to a power supply having a positive voltage and a power supply having a negative voltage to switch the output of a positive or negative voltage, and a positive or negative output from the changeover switch The voltage of
In a gate control circuit of a self-extinguishing element, which applies a voltage to the gate terminal of the self-extinguishing element via a gate resistor and controls on / off of the self-extinguishing element, a positive voltage is applied without passing through a gate resistor. Third applied to the gate terminal of the self-extinguishing element
Switch, means for detecting the current flowing through the self-extinguishing element, comparison means for comparing the detected value of the current detected by this means with an arbitrary set value, and detection of the current flowing by the comparing means. Delay means for delaying an output that has detected that the value has exceeded an arbitrary set value for an arbitrary time, and when the self-extinguishing element is turned on, the conduction current of the self-extinguishing element exceeds an arbitrary set value. After any time after
The third switch is turned on by the output of the delay means, and a positive voltage is applied to the gate terminal without passing through the gate resistor.
【００２２】請求項７に記載の本発明によっても、請求
項６に記載の本発明の場合と同様な効果を得ることがで
きる。According to the present invention described in claim 7, the same effect as in the case of the present invention described in claim 6 can be obtained.
【００２３】請求項８に記載の本発明は、ゲート端子に
印加される電圧によってオン・オフ状態を制御すること
が可能な自己消弧型素子と、自己消弧型素子のエミッタ
端子に対して正の電圧と負の電圧を持つ電源と、正の電
圧を持つ電源と負の電圧を持つ電源に接続され正または
負の電圧の出力を切り替える切り替えスイッチと、切り
替えスイッチによって出力される正または負の電圧を、
ゲート抵抗を介して自己消弧型素子のゲート端子に印加
し、自己消弧型素子のオン・オフを制御する自己消弧型
素子のゲート制御回路において、ゲート抵抗を介さずに
正の電圧を自己消弧型素子のゲート端子に印加する第３
のスイッチと、この第３のスイッチがオフとなった後の
任意の時間経過後に第３のスイッチをオンとする手段と
を備え、自己消弧型素子のターンオン時に、任意の時間
後に第３のスイッチをオンとして、ゲート抵抗を介さず
に正の電圧をゲート端子に印加するようにしたことを特
徴とする。According to the present invention, there is provided a self-extinguishing element whose on / off state can be controlled by a voltage applied to a gate terminal, and an emitter terminal of the self-extinguishing element. A power supply having a positive voltage and a negative voltage, a changeover switch connected to a power supply having a positive voltage and a power supply having a negative voltage to switch the output of a positive or negative voltage, and a positive or negative output from the changeover switch The voltage of
In a gate control circuit of a self-extinguishing element, which applies a voltage to the gate terminal of the self-extinguishing element via a gate resistor and controls on / off of the self-extinguishing element, a positive voltage is applied without passing through a gate resistor. Third applied to the gate terminal of the self-extinguishing element
And means for turning on the third switch after an elapse of an arbitrary time after the third switch is turned off, and when the self-extinguishing element is turned on, the third switch is turned on after an arbitrary time. The switch is turned on, and a positive voltage is applied to the gate terminal without passing through the gate resistor.
【００２４】請求項８に記載の本発明によっても、請求
項６に記載の本発明の場合と同様な効果を得ることがで
きる。According to the present invention described in claim 8, the same effect as in the case of the present invention described in claim 6 can be obtained.
【００２５】請求項９に記載の本発明は、請求項６乃至
請求項８のいずれかに記載の自己消弧型素子のゲート制
御回路において、正の電圧を持つ電源と第３のスイッチ
との間、及び第３のスイッチと自己消弧型素子のゲート
端子との間のうちのすくなくとも一方の間にゲート抵抗
より小さい第３の抵抗を挿入し、ゲート抵抗を介さずに
正の電圧をゲート端子に印加する場合に第３の抵抗を介
して正の電圧をゲート端子に印加するようにしたことを
特徴とする。According to a ninth aspect of the present invention, in the gate control circuit of the self-extinguishing element according to any one of the sixth to eighth aspects, a power supply having a positive voltage and a third switch are connected. A third resistor smaller than the gate resistance is inserted between at least one of the third switch and the gate between the third switch and the gate terminal of the self-arc-extinguishing element, and a positive voltage is gated without passing through the gate resistor. When a voltage is applied to the terminal, a positive voltage is applied to the gate terminal via the third resistor.
【００２６】請求項９に記載の本発明によれば、最初に
ゲート抵抗をある程度の値でターンオンし、自己消弧型
素子のコレクタ−エミッタ間電圧の立下りｄｖ／ｄｔ、
および自己消弧型素子の通電電流の立ち上りｄｉ／ｄｔ
を抑制することができ、電磁誘導ノイズの発生を抑える
ことができる。さらにターンオン後の途中でゲート抵抗
が小さくなり、ミラー時間を短くすることができる。According to the ninth aspect of the present invention, first, the gate resistance is turned on to a certain value, and the falling dv / dt of the collector-emitter voltage of the self-extinguishing element is obtained.
And rise di / dt of the conduction current of the self-extinguishing element
And the occurrence of electromagnetic induction noise can be suppressed. Further, the gate resistance is reduced halfway after the turn-on, and the mirror time can be shortened.
【００２７】請求項１０に記載の本発明は、ゲート端子
に印加される電圧によってオン・オフ状態を制御するこ
とが可能な自己消弧型素子と、自己消弧型素子のエミッ
タ端子に対して正の電圧と負の電圧を持つ電源と、正の
電圧を持つ電源と負の電圧を持つ電源に接続され正また
は負の電圧の出力を切り替える切り替えスイッチと、切
り替えスイッチによって出力される正または負の電圧
を、ゲート抵抗を介して自己消弧型素子のゲート端子に
印加し、自己消弧型素子のオン・オフを制御する自己消
弧型素子のゲート制御回路において、ゲート抵抗を介さ
ずに負の電圧を前記自己消弧型素子のゲート端子に印加
する第２のスイッチと、この第２のスイッチがオンとな
った後の所定のとき（例えば、自己消弧型素子のコレク
タ−エミッタ間電圧が任意の設定値以上になった際、自
己消弧型素子のコレクターエミッタ間電圧が任意の設定
値を超えた後の任意の時間経過後、または第２のスイッ
チがオンとなった後の任意の時間経過後）に第２のスイ
ッチをオフとするように制御する手段と、ゲート抵抗を
介さずに正の電圧を自己消弧型素子のゲート端子に印加
する第３のスイッチと、この第３のスイッチがオフとな
った後の所定のとき（例えば、自己消弧型素子の通電電
流が任意の設定値以上になった際、自己消弧型素子の通
電電流が任意の設定値を超えた後の任意の時間経過後、
または第３のスイッチがオフとなった後の任意の時間経
過後）に第３のスイッチをオンとするように制御する手
段とを備えたことを特徴とする。According to a tenth aspect of the present invention, there is provided a self-extinguishing element whose on / off state can be controlled by a voltage applied to a gate terminal, and an emitter terminal of the self-extinguishing element. A power supply having a positive voltage and a negative voltage, a changeover switch connected to a power supply having a positive voltage and a power supply having a negative voltage to switch the output of a positive or negative voltage, and a positive or negative output from the changeover switch Is applied to the gate terminal of the self-arc-extinguishing element via a gate resistor to control the on / off of the self-arc-extinguishing element. A second switch for applying a negative voltage to the gate terminal of the self-arc-extinguishing element, and a predetermined time after the second switch is turned on (for example, between the collector and the emitter of the self-arc-extinguishing element). Voltage When the voltage exceeds an arbitrary set value, an arbitrary time elapses after the collector-emitter voltage of the self-extinguishing element exceeds the arbitrary set value, or an arbitrary value after the second switch is turned on. Means for controlling the second switch to be turned off after a lapse of time), a third switch for applying a positive voltage to the gate terminal of the self-extinguishing element without passing through a gate resistor, At a predetermined time after the switch is turned off (for example, when the energizing current of the self-extinguishing element exceeds an arbitrary set value, the energizing current of the self-extinguishing element exceeds an arbitrary set value. After any time later,
Or a means for controlling the third switch to be turned on after an elapse of an arbitrary time after the third switch is turned off.
【００２８】請求項１０に記載の本発明によれば、スイ
ッチング時間の短縮、および自己消弧型素子のコレクタ
−エミッタ間電圧のｄｖ／ｄｔ、通電電流のｄｉ／ｄｔ
を緩和することができる。According to the tenth aspect of the present invention, the switching time can be shortened, the collector-emitter voltage dv / dt of the self-extinguishing element, and the conduction current di / dt.
Can be alleviated.
【００２９】[0029]
【発明の実施の形態】以下、本発明の実施形態につい
て、図面を参照して詳細に説明する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【００３０】（第１の実施形態）図１は、本発明の第１
の実施形態に係る自己消弧型素子のゲート制御回路の構
成を示す回路図、図２は第１の実施形態における自己消
弧型素子の各部の波形とスイッチの状態を示す図であ
る。(First Embodiment) FIG. 1 shows a first embodiment of the present invention.
FIG. 2 is a circuit diagram showing a configuration of a gate control circuit of the self-extinguishing element according to the first embodiment. FIG. 2 is a diagram showing waveforms of respective parts of the self-extinguishing element and the states of switches according to the first embodiment.
【００３１】図１に示すように、この実施形態のゲート
制御回路は、自己消弧型素子Ｓ１をオンとするための正
のゲート電圧電源Ｖｏｎと、自己消弧型素子Ｓ１をオフ
とするための負のゲート電圧電源Ｖｏｆｆと、自己消弧
型素子Ｓ１のゲート端子に正のゲート電圧Ｖｏｎと、負
のゲート電圧Ｖｏｆｆとを切り替えて出力する切り替え
スイッチＳＷと、ゲート抵抗Ｒｇと、自己消弧型素子Ｓ
１のコレクタ−エミッタ間電圧Ｖｃｅを検出するための
分圧抵抗Ｒ１、Ｒ２と、自己消弧型素子Ｓ１のコレクタ
−エミッタ間電圧Ｖｃｅと任意の設定値Ｖｒｅｆとを比
較する比較器ＣＯＭと、切り替えスイッチＳＷが負のゲ
ート電圧Ｖｏｆｆ側に切り替わるのと同時にオンとな
り、自己消弧型素子Ｓ１のコレクタ−エミッタ間電圧Ｖ
ｃｅが任意の設定値Ｖｒｅｆ以上になった際にオフとな
る第２のスイッチＳＷ２とで構成される。As shown in FIG. 1, the gate control circuit of this embodiment is provided with a positive gate voltage power supply Von for turning on the self-turn-off element S1 and an off-state for turning off the self-turn-off element S1. , A switch SW for switching and outputting a positive gate voltage Von and a negative gate voltage Voff to the gate terminal of the self-turn-off element S1, a gate resistance Rg, and a self-turn-off switch. Type element S
1. Voltage dividing resistors R1 and R2 for detecting the collector-emitter voltage Vce of No. 1 and a comparator COM for comparing the collector-emitter voltage Vce of the self-turn-off device S1 with an arbitrary set value Vref. The switch SW is turned on at the same time as the switch SW is switched to the negative gate voltage Voff side, and the collector-emitter voltage V of the self-extinguishing element S1 is turned on.
a second switch SW2 that is turned off when ce exceeds an arbitrary set value Vref.
【００３２】自己消弧型素子Ｓ１がターンオフする際に
は、切り替えスイッチＳＷを負のゲート電圧Ｖｏｆｆ側
とし、同時に第２のスイッチＳＷ２をオンとする。自己
消弧型素子Ｓ１のゲート端子には負のゲート電圧Ｖｏｆ
ｆが抵抗Ｒｇを介することなく、第２のスイッチＳＷ２
を経由して自己消弧型素子Ｓ１のゲート端子に直接印加
され、自己消弧型素子Ｓ１のゲート−エミッタ間の接合
容量を急速に充電する。このことにより、自己消弧型素
子Ｓ１のゲート−エミッタ間の接合容量を充電する時間
であるミラー時間が短くなり、自己消弧型素子Ｓ１のス
イッチング時間が短くなる。これにより、電圧型自励式
変換器で必要となる上下アームともにオフゲート信号が
与えられる期間であるデッドタイムや自己消弧型素子Ｓ
１の最小のオン時間の幅が短縮でき、結果として、電圧
型自励式変換器が出力できる交流電圧を大きくとること
ができ、変換器の容量増加を実現できる。When the self-extinguishing element S1 is turned off, the switch SW is set to the negative gate voltage Voff side, and at the same time, the second switch SW2 is turned on. The gate terminal of the self-extinguishing element S1 has a negative gate voltage Vof.
f does not pass through the resistor Rg and the second switch SW2
Is applied directly to the gate terminal of the self-extinguishing element S1 to rapidly charge the gate-emitter junction capacitance of the self-extinguishing element S1. As a result, the mirror time, which is the time for charging the junction capacitance between the gate and the emitter of the self-extinguishing element S1, becomes shorter, and the switching time of the self-extinguishing element S1 becomes shorter. Thereby, the dead time and the self-extinguishing element S, which are the periods during which the off-gate signal is applied to both the upper and lower arms required for the voltage type self-excited converter, are provided.
1, the width of the minimum on-time can be shortened. As a result, the AC voltage that can be output from the voltage-type self-excited converter can be increased, and the capacity of the converter can be increased.
【００３３】また、自己消弧型素子Ｓ１のターンオフ時
のミラー時間が終了し、自己消弧型素子Ｓ１のコレクタ
−エミッタ間電圧Ｖｃｅが立ち上り始め、任意の設定値
Ｖｒｅｆ以上の値となった際に、第２のスイッチＳＷ２
をオフとし、ゲート抵抗Ｒｇを介して自己消弧型素子Ｓ
１のゲート端子に負のゲート電圧を印加する。自己消弧
型素子Ｓ１は、ゲート抵抗Ｒｇにより、電圧の立ち上り
ｄｖ／ｄｔ、電流の立下りｄｉ／ｄｔが変化するため、
ゲート抵抗Ｒｇを挿入することにより、ｄｖ／ｄｔ、ｄ
ｉ／ｄｔを緩やかにすることができる。これにより、自
己消弧型素子Ｓ１のスイッチング時に発生する電磁誘導
ノイズの発生を抑制することができ、周辺機器の誤動作
を防止することができる。When the mirror time at the time of turning off the self-extinguishing element S1 ends and the voltage Vce between the collector and the emitter of the self-extinguishing element S1 starts to rise to a value equal to or higher than an arbitrary set value Vref. The second switch SW2
Is turned off, and the self-extinguishing element S is connected via the gate resistor Rg.
A negative gate voltage is applied to one gate terminal. In the self-extinguishing element S1, the rise dv / dt of the voltage and the fall di / dt of the current change due to the gate resistance Rg.
By inserting the gate resistance Rg, dv / dt, d
i / dt can be reduced. Thus, it is possible to suppress the occurrence of electromagnetic induction noise generated at the time of switching of the self-extinguishing element S1, and to prevent malfunction of peripheral devices.
【００３４】（第２の実施形態）図３は、本発明の第２
の実施形態に係る自己消弧型素子のゲート制御回路の構
成を示す回路図であり、図１と同一要素については同一
符号を付し、説明を省略する。(Second Embodiment) FIG. 3 shows a second embodiment of the present invention.
FIG. 2 is a circuit diagram illustrating a configuration of a gate control circuit of a self-extinguishing element according to the first embodiment. The same elements as those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted.
【００３５】図３において、図１と異なる点は、自己消
弧型素子Ｓ１のコレクタ−エミッタ間電圧Ｖｃｅの検出
値と任意の設定値Ｖｒｅｆを比較する比較器ＣＯＭの出
力に任意の時間遅れをもってパルスを出力する遅延回路
ＴＤ２を付加した点である。自己消弧型素子Ｓ１のコレ
クタ−エミッタ間電圧Ｖｃｅの検出値が任意の設定値Ｖ
ｒｅｆを超えた後、任意の時間経過後に第２のスイッチ
ＳＷ２をオフとしてゲート抵抗Ｒｇを介して負のゲート
電圧をゲート端子に印加する。第１の実施形態と同様な
効果がある。3 differs from FIG. 1 in that the output of the comparator COM for comparing the detected value of the collector-emitter voltage Vce of the self-extinguishing element S1 with an arbitrary set value Vref has an arbitrary time delay. The point is that a delay circuit TD2 for outputting a pulse is added. When the detected value of the collector-emitter voltage Vce of the self-extinguishing element S1 is an arbitrary set value V
After exceeding ref, the second switch SW2 is turned off after an elapse of an arbitrary time, and a negative gate voltage is applied to the gate terminal via the gate resistor Rg. There is an effect similar to that of the first embodiment.
【００３６】（第３の実施形態）図４は、本発明の第３
の実施形態に係る自己消弧型素子のゲート制御回路の構
成を示す回路図であり、図１と同一要素については同一
符号を付し、説明を省略する。(Third Embodiment) FIG. 4 shows a third embodiment of the present invention.
FIG. 2 is a circuit diagram illustrating a configuration of a gate control circuit of a self-extinguishing element according to the first embodiment. The same elements as those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted.
【００３７】図４において、図１と異なる点は、第２の
スイッチＳＷ２のターンオフの方法であり、第１の実施
形態では、自己消弧型素子Ｓ１のコレクタ−エミッタ間
電圧Ｖｃｅが任意の設定値Ｖｒｅｆ以上になった際に、
第２のスイッチＳＷ２をターンオフしたが、本実施形態
では、自己消弧型素子Ｓ１のオフ信号が与えられるのと
同時に第２のスイッチＳＷ２をオンとし、パルス発生器
ＰＬＳ１により設定された任意の時間のオン信号を与
え、設定された任意の時間経過後に第２のスイッチＳＷ
２をオフとするものである。第１の実施形態と同様な効
果がある。FIG. 4 differs from FIG. 1 in the method of turning off the second switch SW2. In the first embodiment, the collector-emitter voltage Vce of the self-extinguishing element S1 is arbitrarily set. When the value exceeds Vref,
Although the second switch SW2 is turned off, in the present embodiment, the second switch SW2 is turned on at the same time as the off signal of the self-turn-off device S1 is supplied, and the arbitrary time set by the pulse generator PLS1 is set. Of the second switch SW after a predetermined time has passed.
2 is turned off. There is an effect similar to that of the first embodiment.
【００３８】（第４の実施形態）図５は、本発明の第４
の実施形態に係る自己消弧型素子のゲート制御回路の構
成を示す回路図であり、図１と同一要素については同一
符号を付し、説明を省略する。(Fourth Embodiment) FIG. 5 shows a fourth embodiment of the present invention.
FIG. 2 is a circuit diagram illustrating a configuration of a gate control circuit of a self-extinguishing element according to the first embodiment. The same elements as those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted.
【００３９】図５において、図１と異なる点は、自己消
弧型素子をオフとするための負のゲート電圧Ｖｏｆｆと
第２のスイッチＳＷ２との間にゲート抵抗Ｒｇに比較し
て小さい抵抗値の第２の抵抗Ｒｇ２を挿入している点で
ある。第２のスイッチＳＷ２は第１乃至第３の実施形態
のいずれかの方法でオン・オフ制御され、自己消弧型素
子Ｓ１のスイッチング時間の短縮、自己消弧型素子Ｓ１
のターンオフ時のｄｖ／ｄｔ、ｄｉ／ｄｔの緩和に効果
がある。FIG. 5 is different from FIG. 1 in that a resistance value smaller than the gate resistance Rg between the negative gate voltage Voff for turning off the self-arc-extinguishing element and the second switch SW2. Is that the second resistor Rg2 is inserted. The second switch SW2 is ON / OFF controlled by any of the first to third embodiments to reduce the switching time of the self-extinguishing element S1 and to reduce the switching time of the self-extinguishing element S1.
Is effective in alleviating dv / dt and di / dt at the time of turn-off.
【００４０】また、挿入される第２の抵抗Ｒｇ２は、図
５に示す自己消弧型素子Ｓ１をオフとするための負のゲ
ート電圧電源Ｖｏｆｆと第２のスイッチＳＷ２との間、
第２のスイッチＳＷ２と自己消弧型素子Ｓ１のゲート端
子との間のいずれか、または両方に挿入してもよい。The inserted second resistor Rg2 is connected between the negative gate voltage power supply Voff for turning off the self-turn-off device S1 shown in FIG. 5 and the second switch SW2.
It may be inserted in any one or both between the second switch SW2 and the gate terminal of the self-extinguishing element S1.
【００４１】（第５の実施形態）図６は、本発明の第５
の実施形態における自己消弧型素子の各部の波形とスイ
ッチの状態であり、図２と同一要素については同一符号
を付し、説明を省略する。(Fifth Embodiment) FIG. 6 shows a fifth embodiment of the present invention.
2 shows the waveform of each part of the self-extinguishing element and the state of the switch in the embodiment, and the same elements as those in FIG.
【００４２】本発明の第５の実施形態では、本発明の第
１乃至第４の実施形態のゲート制御回路において、自己
消弧型素子Ｓ１がターンオフ後、再度、第２のスイッチ
ＳＷ２をオンとし、オフ中の自己消弧型素子Ｓ１にゲー
ト抵抗Ｒｇを介することなく、負のゲート電圧を印加す
るものである。According to the fifth embodiment of the present invention, in the gate control circuits of the first to fourth embodiments of the present invention, after the self-turn-off device S1 is turned off, the second switch SW2 is turned on again. , A negative gate voltage is applied to the turned-off self-turn-off element S1 without passing through the gate resistor Rg.
【００４３】このことにより、自己消弧型素子Ｓ１のオ
フ中に外部からの影響によるゲート電圧の変動を小さく
することができ、自己消弧型素子Ｓ１の誤転弧を防ぐこ
とができる。This makes it possible to reduce the fluctuation of the gate voltage due to an external influence while the self-extinguishing element S1 is off, thereby preventing the self-extinguishing element S1 from erroneously turning.
【００４４】（第６の実施形態）図７は、本発明の第６
の実施形態に係る自己消弧型素子のゲート制御回路の構
成を示す回路図、図８は第６の実施形態における自己消
弧型素子の各部の波形とスイッチの状態を示す図であ
る。(Sixth Embodiment) FIG. 7 shows a sixth embodiment of the present invention.
FIG. 8 is a circuit diagram showing a configuration of a gate control circuit of a self-extinguishing element according to the sixth embodiment. FIG. 8 is a diagram showing waveforms of respective parts of the self-extinguishing element and states of switches according to a sixth embodiment.
【００４５】図７に示すように、この実施形態のゲート
制御回路は、通電電流Ｉｃを検出することのできる自己
消弧型素子Ｓ２と、自己消弧型素子Ｓ２をオンとするた
めの正のゲート電圧電源Ｖｏｎと、自己消弧型素子Ｓ２
をオフとするための負のゲート電圧電源Ｖｏｆｆと、自
己消弧型素子Ｓ２のゲート端子に正のゲート電圧Ｖｏｎ
と、負のゲート電圧Ｖｏｆｆとを切り替えて出力する切
り替えスイッチＳＷと、ゲート抵抗Ｒｇと、自己消弧型
素子Ｓ２の通電電流Ｉｃと設定値Ｉｒｅｆを比較する比
較器ＣＯＭと、自己消弧型素子Ｓ２の通電電流ＩｃがＩ
ｒｅｆ以上になった際にオンとなる第３のスイッチＳＷ
３とで構成されている。As shown in FIG. 7, the gate control circuit according to this embodiment includes a self-extinguishing element S2 capable of detecting the current Ic and a positive control for turning on the self-extinguishing element S2. Gate voltage power supply Von and self-turn-off element S2
And a positive gate voltage Von at the gate terminal of the self-extinguishing element S2.
Switch SW for switching and outputting a negative gate voltage Voff, a gate resistor Rg, a comparator COM for comparing a current Ic of self-extinguishing element S2 with a set value Iref, and a self-extinguishing element. When the current Ic of S2 is I
A third switch SW that is turned on when the voltage exceeds ref
3 is comprised.
【００４６】自己消弧型素子Ｓ２がターンオンする際に
は、切り替えスイッチＳＷを正のゲート電圧Ｖｏｎ側と
し、ゲート抵抗Ｒｇを介して、自己消弧型素子Ｓ２のゲ
ート端子に正のゲート電圧Ｖｏｎを印加する。自己消弧
型素子Ｓ２の通電電流Ｉｃが設定された任意の電流値Ｉ
ｒｅｆ以上となった際に、第３のスイッチＳＷ３をオン
とし、正のゲート電圧Ｖｏｎがゲート抵抗Ｒｇを介する
ことなく、自己消弧型素子Ｓ２のゲート端子に直接印加
され、自己消弧型素子Ｓ２のゲート−エミッタ間の接合
容量を急速に充電する。このことにより、自己消弧型素
子Ｓ２のゲート−エミッタ間の接合容量を充電する時間
であるミラー時間が短くなり、自己消弧型素子Ｓ２のス
イッチング時間が短くなる。これにより、電圧型自励式
変換器で必要となる自己消弧型素子の最小のオン時間の
幅が短縮でき、結果として、電圧型自励式変換器が出力
できる交流電圧を大きくとることができ、変換器の容量
増加を実現できる。When the self-turn-off device S2 is turned on, the changeover switch SW is set to the positive gate voltage Von side, and the positive gate voltage Von is applied to the gate terminal of the self-turn-off device S2 via the gate resistor Rg. Is applied. Arbitrary current value I at which energizing current Ic of self-extinguishing element S2 is set
When the voltage exceeds ref, the third switch SW3 is turned on, and the positive gate voltage Von is directly applied to the gate terminal of the self-extinguishing element S2 without passing through the gate resistor Rg. The junction capacitance between the gate and the emitter of S2 is rapidly charged. As a result, the mirror time, which is the time for charging the junction capacitance between the gate and the emitter of the self-extinguishing element S2, is shortened, and the switching time of the self-extinguishing element S2 is shortened. As a result, the minimum on-time width of the self-extinguishing element required for the voltage-type self-excited converter can be reduced, and as a result, the AC voltage that can be output by the voltage-type self-excited converter can be increased. The capacity of the converter can be increased.
【００４７】また、自己消弧型素子Ｓ２の通電電流Ｉｃ
の立ち上りｄｉ／ｄｔ、および、自己消弧型素子Ｓ２の
コレクタ−エミッタ間電圧Ｖｃｅの立下りｄｖ／ｄｔを
緩やかにすることができ、自己消弧型素子Ｓ２のスイッ
チング時に発生する電磁誘導ノイズの発生を抑制し、周
辺機器の誤動作を防止することができる。The current Ic flowing through the self-extinguishing element S2
And the falling dv / dt of the collector-emitter voltage Vce of the self-extinguishing element S2 can be moderated, and the electromagnetic induction noise generated at the time of switching of the self-extinguishing element S2 can be reduced. Generation can be suppressed, and malfunction of peripheral devices can be prevented.
【００４８】（第７の実施形態）図９は、本発明の第７
の実施形態に係る自己消弧型素子のゲート制御回路の構
成を示す回路図であり、図７と同一要素については、同
一符号を付し、説明を省略する。(Seventh Embodiment) FIG. 9 shows a seventh embodiment of the present invention.
FIG. 9 is a circuit diagram showing a configuration of a gate control circuit of a self-extinguishing element according to the third embodiment. The same elements as those in FIG.
【００４９】図９において、図７と異なる点は、自己消
弧型素子Ｓ２の通電電流Ｉｃの検出値と任意の設定値Ｉ
ｒｅｆを比較する比較器ＣＯＭの出力に任意の時間遅れ
をもってパルスを出力する遅延回路ＴＤ３を付加した点
である。自己消弧型素子Ｓ２の通電電流Ｉｃの検出値が
任意の設定値Ｉｒｅｆを超えた後、任意の時間経過後に
第３のスイッチＳＷ３をオンとしてゲート抵抗Ｒｇを介
さずに正のゲート電圧Ｖｏｎをゲート端子に印加する。
第６の実施形態と同様な効果がある。FIG. 9 differs from FIG. 7 only in that the detected value of the conduction current Ic of the self-extinguishing element S2 and an arbitrary set value I
The difference is that a delay circuit TD3 for outputting a pulse with an arbitrary time delay is added to the output of the comparator COM for comparing ref. After the detected value of the conduction current Ic of the self-extinguishing element S2 exceeds an arbitrary set value Iref, the third switch SW3 is turned on after an elapse of an arbitrary time and the positive gate voltage Von is applied without passing through the gate resistance Rg. Apply to gate terminal.
There is an effect similar to that of the sixth embodiment.
【００５０】（第８の実施形態）図１０は、本発明の第
８の実施形態に係る自己消弧型素子のゲート制御回路の
構成を示す回路図であり、図７と同一要素については同
一符号を付し、説明を省略する。(Eighth Embodiment) FIG. 10 is a circuit diagram showing a configuration of a gate control circuit of a self-extinguishing element according to an eighth embodiment of the present invention. The reference numerals are used and the description is omitted.
【００５１】図１０において、図７と異なる点は、第３
のスイッチＳＷ３のターンオンの方法であり、第６の実
施形態では、自己消弧型素子Ｓ２の通電電流Ｉｃが任意
の設定値Ｉｒｅｆ以上になった際に、第３のスイッチＳ
Ｗ３をオンとしたが、本実施形態では、設定された任意
の時間遅れをもってパルスを出力する遅延回路ＴＤを有
し、自己消弧型素子Ｓ２がターンオンする際に、切り替
えスイッチＳＷがＶｏｎ側となった後、即ち第３のスイ
ッチＳＷ３がオフとなった後の設定された任意の時間経
過後に第３のスイッチＳＷ３をオンとするものである。
第６の実施形態と同様な効果がある。FIG. 10 is different from FIG.
In the sixth embodiment, when the energizing current Ic of the self-extinguishing element S2 becomes equal to or more than an arbitrary set value Iref, the third switch S3 is turned on.
Although W3 is turned on, the present embodiment has a delay circuit TD that outputs a pulse with an arbitrary set time delay, and when the self-extinguishing element S2 is turned on, the switch SW is connected to the Von side. Then, the third switch SW3 is turned on after an arbitrarily set time after the third switch SW3 is turned off.
There is an effect similar to that of the sixth embodiment.
【００５２】（第９の実施形態）図１１は、本発明の第
９の実施形態に係る自己消弧型素子のゲート制御回路の
構成を示す回路図であり、図７と同一要素については同
一符号を付し、説明を省略する。(Ninth Embodiment) FIG. 11 is a circuit diagram showing a configuration of a gate control circuit of a self-extinguishing element according to a ninth embodiment of the present invention. The reference numerals are used and the description is omitted.
【００５３】図１１において、図７と異なる点は、自己
消弧型素子Ｓ２をオンとするための正のゲート電圧電源
Ｖｏｎと第３のスイッチＳＷ３との間にゲート抵抗Ｒｇ
に比較して小さい抵抗値の第３の抵抗Ｒｇ３を挿入して
いる点である。第３のスイッチＳＷ３は第６乃至第８の
実施形態のいずれかの方法でオンとされ、自己消弧型素
子Ｓ２のスイッチング時間の短縮、自己消弧型素子Ｓ２
のターンオン時のｄｖ／ｄｔ、ｄｉ／ｄｔの緩和に効果
がある。FIG. 11 differs from FIG. 7 in that a gate resistance Rg is connected between a positive gate voltage power supply Von for turning on the self-turn-off element S2 and the third switch SW3.
Is that a third resistor Rg3 having a smaller resistance value than that of the third resistor Rg3 is inserted. The third switch SW3 is turned on by any of the methods of the sixth to eighth embodiments to reduce the switching time of the self-extinguishing element S2 and to reduce the switching time of the self-extinguishing element S2.
Is effective in alleviating dv / dt and di / dt at turn-on.
【００５４】また、挿入される第３の抵抗Ｒｇ３は、図
９に示す自己消弧型素子Ｓ２をオンとするための正のゲ
ート電圧電源Ｖｏｎと第３のスイッチＳＷ３との間、第
３のスイッチＳＷ３と自己消弧型素子Ｓ２のゲート端子
との間のいずれか、または両方に挿入してもよい。The third resistor Rg3 inserted is connected between the positive gate voltage power supply Von for turning on the self-turn-off device S2 shown in FIG. 9 and the third switch SW3. It may be inserted in any one or both between the switch SW3 and the gate terminal of the self-extinguishing element S2.
【００５５】（第１０の実施形態）図１２は、本発明の
第１０の実施形態に係る自己消弧型素子のゲート制御回
路の構成を示す回路図である。図１および図７と同一要
素については同一符号を付し、説明を省略する。(Tenth Embodiment) FIG. 12 is a circuit diagram showing a configuration of a gate control circuit of a self-extinguishing element according to a tenth embodiment of the present invention. 1 and 7 are denoted by the same reference numerals, and description thereof will be omitted.
【００５６】図１２は、第１の実施形態における自己消
弧型素子のターンオフ時のゲート制御方法と第６の実施
形態における自己消弧型素子のターンオン時のゲート制
御方法を組み合わせて実施する回路図である。FIG. 12 is a circuit diagram showing a combination of the gate control method when the self-extinguishing element is turned off in the first embodiment and the gate control method when the self-extinguishing element is turned on in the sixth embodiment. FIG.
【００５７】自己消弧型素子のターンオフ時に第１の実
施形態の方法でゲート制御を実施し、自己消弧型素子の
ターンオン時に第６の実施形態の方法でゲート制御を実
施する。自己消弧型素子のターンオフ、ターンオンの際
にスイッチング時間を短縮でき、また、自己消弧型素子
のコレクターエミッタ間電圧のｄｖ／ｄｔ、通電電流の
ｄｉ／ｄｔを緩和でき、電磁誘導ノイズの発生を抑制す
ることができる。Gate control is performed by the method of the first embodiment when the self-extinguishing element is turned off, and gate control is executed by the method of the sixth embodiment when the self-extinguishing element is turned on. Switching time can be reduced when the self-extinguishing element is turned off and on, and dv / dt of collector-emitter voltage and di / dt of energizing current of the self-extinguishing element can be reduced, thereby generating electromagnetic induction noise. Can be suppressed.
【００５８】なお、図１２では、図１に示す第１の実施
形態の構成と、図７に示す第６の実施形態の構成とを組
み合わせたが、他の実施形態の自己消弧型素子のゲート
制御回路の構成を組み合わせてもよい。即ち、第１乃至
第５の実施形態のいずれかと、第６乃至第９の実施形態
のいずれかとを組み合わせて実施することができる。In FIG. 12, the configuration of the first embodiment shown in FIG. 1 and the configuration of the sixth embodiment shown in FIG. 7 are combined. The configurations of the gate control circuits may be combined. That is, any one of the first to fifth embodiments can be combined with any one of the sixth to ninth embodiments.
【００５９】[0059]
【発明の効果】以上説明したように、本発明の自己消弧
型素子のゲート制御回路によれば、自己消弧型素子のス
イッチング時間を短縮することができ、電圧型自励式変
換器の容量を増加させることができる。また、自己消弧
型素子のターンオン、ターンオフ時のｄｖ／ｄｔ、ｄｉ
／ｄｔを緩やかにすることができ、電磁誘導ノイズの発
生を抑え、周辺機器の誤動作を防止することができる。As described above, according to the gate control circuit of the self-extinguishing element of the present invention, the switching time of the self-extinguishing element can be reduced, and the capacity of the voltage type self-excited converter can be reduced. Can be increased. Also, dv / dt, di when the self-arc-extinguishing element is turned on and off.
/ Dt can be moderated, generation of electromagnetic induction noise can be suppressed, and malfunction of peripheral devices can be prevented.
【図１】 本発明の第１の実施形態の構成を示す回路
図。FIG. 1 is a circuit diagram showing a configuration of a first embodiment of the present invention.
【図２】 本発明の第１の実施形態における自己消弧型
素子の各部の波形とスイッチの状態を示す図。FIG. 2 is a diagram showing a waveform of each part of a self-extinguishing element and a state of a switch according to the first embodiment of the present invention.
【図３】 本発明の第２の実施形態の構成を示す回路
図。FIG. 3 is a circuit diagram showing a configuration of a second embodiment of the present invention.
【図４】 本発明の第３の実施形態の構成を示す回路
図。FIG. 4 is a circuit diagram showing a configuration according to a third embodiment of the present invention.
【図５】 本発明の第４の実施形態の構成を示す回路
図。FIG. 5 is a circuit diagram showing a configuration of a fourth embodiment of the present invention.
【図６】 本発明の第５の実施形態における自己消弧型
素子の各部の波形とスイッチの状態を示す図。FIG. 6 is a diagram showing a waveform of each part of a self-extinguishing type element and a state of a switch according to a fifth embodiment of the present invention.
【図７】 本発明の第６の実施形態の構成を示す回路
図。FIG. 7 is a circuit diagram showing a configuration of a sixth embodiment of the present invention.
【図８】 本発明の第６の実施形態における自己消弧型
素子の各部の波形とスイッチの状態を示す図。FIG. 8 is a diagram showing a waveform of each part of a self-extinguishing element and a state of a switch according to a sixth embodiment of the present invention.
【図９】 本発明の第７の実施形態の構成を示す回路
図。FIG. 9 is a circuit diagram showing a configuration according to a seventh embodiment of the present invention.
【図１０】本発明の第８の実施形態の構成を示す回路
図。FIG. 10 is a circuit diagram showing a configuration according to an eighth embodiment of the present invention.
【図１１】本発明の第９の実施形態の構成を示す回路
図。FIG. 11 is a circuit diagram showing a configuration according to a ninth embodiment of the present invention.
【図１２】本発明の第１０の実施形態の構成を示す回路
図。FIG. 12 is a circuit diagram showing a configuration according to a tenth embodiment of the present invention.
【図１３】従来例の構成を示す回路図。FIG. 13 is a circuit diagram showing a configuration of a conventional example.
【図１４】従来例における自己消弧型素子の各部の波形
とスイッチの状態を示す図。FIG. 14 is a diagram showing a waveform of each part of a self-extinguishing element and a state of a switch in a conventional example.
Ｓ１…自己消弧型素子 Ｖｏｎ…正のゲート電圧電源 Ｖｏｆｆ…負のゲート電圧電源 ＳＷ…切り替えスイッチ Ｒｇ…ゲート抵抗 Ｖｃｅ…コレクタ−エミッタ間電圧 Ｖｇｅ…ゲート−エミッタ間電圧 ＳＷ２…第２のスイッチ ＣＯＭ…比較器 Ｒ１、Ｒ２…分圧抵抗 Ｖｒｅｆ…コレクタ−エミッタ間電圧比較用の任意の設
定値 ＴＤ、ＴＤ２、ＴＤ３…遅延回路 ＰＬＳ１…パルス発生器 Ｒｇ２…第２の抵抗 Ｓ２…電流検出機能を有する自己消弧型素子 ＳＷ３…第３のスイッチ Ｉｃ…通電電流 Ｉｒｅｆ…通電電流比較用の任意の設定値 Ｒｇ３…第３の抵杭S1: Self-extinguishing element Von: Positive gate voltage power supply Voff: Negative gate voltage power supply SW: Changeover switch Rg: Gate resistance Vce: Collector-emitter voltage Vge: Gate-emitter voltage SW2: Second switch COM ... Comparators R1, R2... Dividing resistor Vref... Arbitrary set value for collector-emitter voltage comparison TD, TD2, TD3... Delay circuit PLS1... Pulse generator Rg2. Self-extinguishing element SW3: Third switch Ic: Conducting current Iref: Arbitrary set value for comparing conducting current Rg3: Third resistor
Claims (10)
・オフ状態を制御することが可能な自己消弧型素子と、
前記自己消弧型素子のエミッタ端子に対して正の電圧と
負の電圧を持つ電源と、前記正の電圧を持つ電源と負の
電圧を持つ電源に接続され正または負の電圧の出力を切
り替える切り替えスイッチと、前記切り替えスイッチに
よって出力される正または負の電圧を、ゲート抵抗を介
して前記自己消弧型素子のゲート端子に印加し、前記自
己消弧型素子のオン・オフを制御する自己消弧型素子の
ゲート制御回路において、 前記ゲート抵抗を介さずに前記負の電圧を前記自己消弧
型素子のゲート端子に印加する第２のスイッチと、前記
自己消弧型素子のコレクタ−エミッタ間電圧を検出する
手段と、この手段により検出されたコレクタ−エミッタ
間電圧の検出値と任意の設定値とを比較する比較手段と
を備え、 前記自己消弧型素子のターンオフ時に、前記第２のスイ
ッチをオンとして、前記ゲート抵抗を介さずに前記負の
電圧をゲート端子に印加して前記自己消弧型素子をター
ンオフし、前記自己消弧型素子のコレクタ−エミッタ間
電圧が前記任意の設定値以上になった際に、前記比較手
段の出力により前記第２のスイッチをオフとし、前記ゲ
ート抵抗を介して前記負の電圧をゲート端子に印加する
ようにしたことを特徴とする自己消弧型素子のゲート制
御回路。A self-extinguishing element capable of controlling an on / off state by a voltage applied to a gate terminal;
A power supply having a positive voltage and a negative voltage with respect to the emitter terminal of the self-extinguishing element, and a power supply having the positive voltage and a power supply having a negative voltage are connected to each other to switch the output of a positive or negative voltage. A switch for applying a positive or negative voltage output by the switch to a gate terminal of the self-extinguishing element via a gate resistor to control on / off of the self-extinguishing element. In the gate control circuit of the arc-extinguishing element, a second switch for applying the negative voltage to the gate terminal of the self-extinguishing element without passing through the gate resistor, and a collector-emitter of the self-extinguishing element Means for detecting an inter-electrode voltage, and comparing means for comparing a detected value of the collector-emitter voltage detected by the means with an arbitrary set value, when the self-turn-off element is turned off. Turning on the second switch, applying the negative voltage to the gate terminal without passing through the gate resistor, to turn off the self-arc-extinguishing element, and setting a collector-emitter voltage of the self-arc-extinguishing element. When the value exceeds the arbitrary set value, the second switch is turned off by the output of the comparing means, and the negative voltage is applied to the gate terminal via the gate resistor. The gate control circuit of the self-extinguishing element.
・オフ状態を制御することが可能な自己消弧型素子と、
前記自己消弧型素子のエミッタ端子に対して正の電圧と
負の電圧を持つ電源と、前記正の電圧を持つ電源と負の
電圧を持つ電源に接続され正または負の電圧の出力を切
り替える切り替えスイッチと、前記切り替えスイッチに
よって出力される正または負の電圧を、ゲート抵抗を介
して前記自己消弧型素子のゲート端子に印加し、前記自
己消弧型素子のオン・オフを制御する自己消弧型素子の
ゲート制御回路において、 前記ゲート抵抗を介さずに前記負の電圧を前記自己消弧
型素子のゲート端子に印加する第２のスイッチと、前記
自己消弧型素子のコレクタ−エミッタ間電圧を検出する
手段と、この手段により検出されたコレクタ−エミッタ
間電圧の検出値と任意の設定値とを比較する比較手段
と、この比較手段により前記コレクタ−エミッタ間電圧
の検出値が前記任意の設定値を超えたことを検出した出
力を任意の時間遅延させる遅延手段とを備え、 前記自己消弧型素子のターンオフ時に、前記第２のスイ
ッチをオンとして、前記ゲート抵抗を介さずに前記負の
電圧をゲート端子に印加して前記自己消弧型素子をター
ンオフし、前記自己消弧型素子のコレクターエミッタ間
電圧が前記任意の設定値を超えた後の任意の時間経過後
に、前記遅延手段の出力により前記第２のスイッチをオ
フとし、前記ゲート抵抗を介して前記負の電圧をゲート
端子に印加するようにしたことを特徴とする自己消弧型
素子のゲート制御回路。A self-extinguishing element capable of controlling an on / off state by a voltage applied to a gate terminal;
A power supply having a positive voltage and a negative voltage with respect to the emitter terminal of the self-extinguishing element, and a power supply having the positive voltage and a power supply having a negative voltage are connected to each other to switch the output of a positive or negative voltage. A switch for applying a positive or negative voltage output by the switch to a gate terminal of the self-extinguishing element via a gate resistor to control on / off of the self-extinguishing element. In the gate control circuit of the arc-extinguishing element, a second switch for applying the negative voltage to the gate terminal of the self-extinguishing element without passing through the gate resistor, and a collector-emitter of the self-extinguishing element Means for detecting an inter-electrode voltage, comparison means for comparing a detected value of the collector-emitter voltage detected by the means with an arbitrary set value, and Delay means for delaying an output that has detected that the detected value of the inter-voltage exceeds the arbitrary set value for an arbitrary time, when the self-turn-off element is turned off, the second switch is turned on, The self-turn-off device is turned off by applying the negative voltage to the gate terminal without passing through the gate resistor, and after the collector-emitter voltage of the self-turn-off device exceeds the arbitrary set value. A self-extinguishing element characterized in that the second switch is turned off by an output of the delay means after an elapse of an arbitrary time, and the negative voltage is applied to a gate terminal via the gate resistor. Gate control circuit.
・オフ状態を制御することが可能な自己消弧型素子と、
前記自己消弧型素子のエミッタ端子に対して正の電圧と
負の電圧を持つ電源と、前記正の電圧を持つ電源と負の
電圧を持つ電源に接続され正または負の電圧の出力を切
り替える切り替えスイッチと、前記切り替えスイッチに
よって出力される正または負の電圧を、ゲート抵抗を介
して前記自己消弧型素子のゲート端子に印加し、前記自
己消弧型素子のオン・オフを制御する自己消弧型素子の
ゲート制御回路において、 前記ゲート抵抗を介さずに前記負の電圧を前記自己消弧
型素子のゲート端子に印加する第２のスイッチと、この
第２のスイッチがオンとなった後の任意の時間経過後に
前記第２のスイッチをオフとする手段とを備え、 前記自己消弧型素子のターンオフ時に、前記第２のスイ
ッチをオンとして、前記ゲート抵抗を介さずに前記負の
電圧をゲート端子に印加して前記自己消弧型素子をター
ンオフし、任意の時間経過後に、前記第２のスイッチを
オフとし、前記ゲート抵抗を介して前記負の電圧をゲー
ト端子に印加するようにしたことを特徴とする自己消弧
型素子のゲート制御回路。3. A self-extinguishing element capable of controlling an on / off state by a voltage applied to a gate terminal;
A power supply having a positive voltage and a negative voltage with respect to the emitter terminal of the self-extinguishing element, and a power supply having the positive voltage and a power supply having a negative voltage are connected to each other to switch the output of a positive or negative voltage. A switch for applying a positive or negative voltage output by the switch to a gate terminal of the self-extinguishing element via a gate resistor to control on / off of the self-extinguishing element. In the gate control circuit of the arc-extinguishing element, a second switch for applying the negative voltage to the gate terminal of the self-extinguishing element without passing through the gate resistor, and the second switch is turned on. Means for turning off the second switch after an elapse of an arbitrary time later, when the self-turn-off device is turned off, the second switch is turned on, and the second switch is turned on without passing through the gate resistor. Is applied to the gate terminal to turn off the self-extinguishing element, and after an elapse of an arbitrary time, the second switch is turned off, and the negative voltage is applied to the gate terminal via the gate resistor. A gate control circuit for a self-extinguishing type element, characterized in that:
ッチとの間、及び前記第２のスイッチと前記自己消弧型
素子のゲート端子との間のうちのすくなくとも一方の間
に前記ゲート抵抗より小さい第２の抵抗を挿入し、前記
ゲート抵抗を介さずに前記負の電圧をゲート端子に印加
する場合に前記第２の抵抗を介して前記負の電圧をゲー
ト端子に印加するようにしたことを特徴とする請求項１
乃至請求項３のいずれかに記載の自己消弧型素子のゲー
ト制御回路。4. The method according to claim 1, wherein the power supply has a negative voltage and at least one of the second switch and the gate terminal of the self-turn-off device. When a second resistor smaller than the gate resistor is inserted and the negative voltage is applied to the gate terminal without passing through the gate resistor, the negative voltage is applied to the gate terminal via the second resistor. 2. The method according to claim 1, wherein
A gate control circuit for a self-extinguishing element according to claim 3.
の時間後に再び前記第２のスイッチをオンとするように
したことを特徴とする請求項１乃至請求項４のいずれか
に記載の自己消弧型素子のゲート制御回路。5. The device according to claim 1, wherein the second switch is turned on again after an arbitrary time after the self-turn-off device is turned off. Gate control circuit for self-extinguishing element.
・オフ状態を制御することが可能な自己消弧型素子と、
前記自己消弧型素子のエミッタ端子に対して正の電圧と
負の電圧を持つ電源と、前記正の電圧を持つ電源と負の
電圧を持つ電源に接続され正または負の電圧の出力を切
り替える切り替えスイッチと、前記切り替えスイッチに
よって出力される正または負の電圧を、ゲート抵抗を介
して前記自己消弧型素子のゲート端子に印加し、前記自
己消弧型素子のオン・オフを制御する自己消弧型素子の
ゲート制御回路において、 前記ゲート抵抗を介さずに前記正の電圧を前記自己消弧
型素子のゲート端子に印加する第３のスイッチと、前記
自己消弧型素子の通電電流を検出する手段と、この手段
により検出された通電電流の検出値と任意の設定値とを
比較する比較手段とを備え、 前記自己消弧型素子のターンオン時に、前記自己消弧型
素子の通電電流が前記任意の設定値以上になった際に、
前記比較手段の出力により前記第３のスイッチをオンと
してゲート抵抗を介さずに前記正の電圧をゲート端子に
印加するようにしたことを特徴とする自己消弧型素子の
ゲート制御回路。6. A self-extinguishing element capable of controlling an on / off state by a voltage applied to a gate terminal;
A power supply having a positive voltage and a negative voltage with respect to the emitter terminal of the self-extinguishing element, and a power supply having the positive voltage and a power supply having a negative voltage are connected to each other to switch the output of a positive or negative voltage. A switch for applying a positive or negative voltage output by the switch to a gate terminal of the self-extinguishing element via a gate resistor to control on / off of the self-extinguishing element. In the gate control circuit of the arc-extinguishing element, a third switch for applying the positive voltage to the gate terminal of the self-extinguishing element without passing through the gate resistor; Detecting means, and comparing means for comparing a detected value of the energizing current detected by this means with an arbitrary set value, and when the self-extinguishing element is turned on, the energizing current of the self-extinguishing element is turned on. When it becomes the more arbitrary set value,
A gate control circuit for a self-extinguishing element, wherein the third switch is turned on by the output of the comparing means, and the positive voltage is applied to a gate terminal without passing through a gate resistor.
・オフ状態を制御することが可能な自己消弧型素子と、
前記自己消弧型素子のエミッタ端子に対して正の電圧と
負の電圧を持つ電源と、前記正の電圧を持つ電源と負の
電圧を持つ電源に接続され正または負の電圧の出力を切
り替える切り替えスイッチと、前記切り替えスイッチに
よって出力される正または負の電圧を、ゲート抵抗を介
して前記自己消弧型素子のゲート端子に印加し、前記自
己消弧型素子のオン・オフを制御する自己消弧型素子の
ゲート制御回路において、 前記ゲート抵抗を介さずに前記正の電圧を前記自己消弧
型素子のゲート端子に印加する第３のスイッチと、前記
自己消弧型素子の通電電流を検出する手段と、この手段
により検出された通電電流の検出値と任意の設定値とを
比較する比較手段と、この比較手段により前記通電電流
の検出値が前記任意の設定値を超えたことを検出した出
力を任意の時間遅延させる遅延手段とを備え、 自己消弧型素子のターンオン時に、前記自己消弧型素子
の通電電流が前記任意の設定値を超えた後の任意の時間
経過後に、前記遅延手段の出力により前記第３のスイッ
チをオンとし、前記ゲート抵抗を介さずに前記正の電圧
をゲート端子に印加するようにしたことを特徴とする自
己消弧型素子のゲート制御回路。7. A self-extinguishing element capable of controlling an on / off state by a voltage applied to a gate terminal;
A power supply having a positive voltage and a negative voltage with respect to the emitter terminal of the self-extinguishing element, and a power supply having the positive voltage and a power supply having a negative voltage are connected to each other to switch the output of a positive or negative voltage. A switch for applying a positive or negative voltage output by the switch to a gate terminal of the self-extinguishing element via a gate resistor to control on / off of the self-extinguishing element. In the gate control circuit of the arc-extinguishing element, a third switch for applying the positive voltage to the gate terminal of the self-extinguishing element without passing through the gate resistor; Detecting means, comparing means for comparing the detected value of the energizing current detected by the means with an arbitrary set value, and detecting that the detected value of the energizing current exceeds the arbitrary set value by the comparing means. Inspection Delay means for delaying the output output for an arbitrary time, when the self-extinguishing element is turned on, after a given time has elapsed after the current flowing through the self-extinguishing element has exceeded the arbitrary set value, A gate control circuit for a self-extinguishing element, wherein the third switch is turned on by an output of the delay means, and the positive voltage is applied to a gate terminal without passing through the gate resistor.
・オフ状態を制御することが可能な自己消弧型素子と、
前記自己消弧型素子のエミッタ端子に対して正の電圧と
負の電圧を持つ電源と、前記正の電圧を持つ電源と負の
電圧を持つ電源に接続され正または負の電圧の出力を切
り替える切り替えスイッチと、前記切り替えスイッチに
よって出力される正または負の電圧を、ゲート抵抗を介
して前記自己消弧型素子のゲート端子に印加し、前記自
己消弧型素子のオン・オフを制御する自己消弧型素子の
ゲート制御回路において、 前記ゲート抵抗を介さずに前記正の電圧を前記自己消弧
型素子のゲート端子に印加する第３のスイッチと、この
第３のスイッチがオフとなった後の任意の時間経過後に
第３のスイッチをオンとする手段とを備え、 自己消弧型素子のターンオン時に、任意の時間後に前記
第３のスイッチをオンとして、前記ゲート抵抗を介さず
に前記正の電圧をゲート端子に印加するようにしたこと
を特徴とする自己消弧型素子のゲート制御回路。8. A self-extinguishing element capable of controlling an on / off state by a voltage applied to a gate terminal;
A power supply having a positive voltage and a negative voltage with respect to the emitter terminal of the self-extinguishing element, and a power supply having the positive voltage and a power supply having a negative voltage are connected to each other to switch the output of a positive or negative voltage. A switch for applying a positive or negative voltage output by the switch to a gate terminal of the self-extinguishing element via a gate resistor to control on / off of the self-extinguishing element. In the gate control circuit of the arc-extinguishing element, a third switch for applying the positive voltage to the gate terminal of the self-extinguishing element without passing through the gate resistor, and the third switch is turned off. Means for turning on a third switch after a given time has elapsed, and when the self-extinguishing element is turned on, the third switch is turned on after a given time without passing through the gate resistor. Gate control circuit of the self-extinguishing type element characterized in that so as to apply the positive voltage to the gate terminal.
ッチとの間、及び前記第３のスイッチと前記自己消弧型
素子のゲート端子との間のうちのすくなくとも一方の間
に前記ゲート抵抗より小さい第３の抵抗を挿入し、前記
ゲート抵抗を介さずに前記正の電圧をゲート端子に印加
する場合に前記第３の抵抗を介して前記正の電圧をゲー
ト端子に印加するようにしたことを特徴とする請求項６
乃至請求項８のいずれかに記載の自己消弧型素子のゲー
ト制御回路。9. The method according to claim 1, wherein the power supply has a positive voltage and at least one of the third switch and at least one of the third switch and a gate terminal of the self-extinguishing element. A third resistor smaller than a gate resistor is inserted, and when the positive voltage is applied to the gate terminal without passing through the gate resistor, the positive voltage is applied to the gate terminal via the third resistor. 7. The method according to claim 6, wherein
A gate control circuit for a self-extinguishing element according to claim 8.
ン・オフ状態を制御することが可能な自己消弧型素子
と、前記自己消弧型素子のエミッタ端子に対して正の電
圧と負の電圧を持つ電源と、前記正の電圧を持つ電源と
負の電圧を持つ電源に接続され正または負の電圧の出力
を切り替える切り替えスイッチと、前記切り替えスイッ
チによって出力される正または負の電圧を、ゲート抵抗
を介して前記自己消弧型素子のゲート端子に印加し、前
記自己消弧型素子のオン・オフを制御する自己消弧型素
子のゲート制御回路において、 前記ゲート抵抗を介さずに前記負の電圧を前記自己消弧
型素子のゲート端子に印加する第２のスイッチと、この
第２のスイッチがオンとなった後の所定の時に前記第２
のスイッチをオフとするように制御する手段と、前記ゲ
ート抵抗を介さずに前記正の電圧を前記自己消弧型素子
のゲート端子に印加する第３のスイッチと、この第３の
スイッチがオフとなった後の所定のときに前記第３のス
イッチをオンとするように制御する手段とを備えたこと
を特徴とする自己消弧型素子のゲート制御回路。10. A self-extinguishing element whose on / off state can be controlled by a voltage applied to a gate terminal, and a positive voltage and a negative voltage with respect to an emitter terminal of the self-extinguishing element. A power supply having a positive voltage, a power supply having a positive voltage and a power supply having a negative voltage, and a changeover switch for switching the output of a positive or negative voltage; and a positive or negative voltage output by the changeover switch. A self-extinguishing element gate control circuit for applying to the gate terminal of the self-extinguishing element via a resistor to control on / off of the self-extinguishing element. A second switch for applying the voltage of the second switch to the gate terminal of the self-extinguishing element, and a second switch for applying the second switch at a predetermined time after the second switch is turned on.
A third switch for applying the positive voltage to the gate terminal of the self-extinguishing element without passing through the gate resistor; and a third switch for turning off the third switch. Means for controlling the third switch to be turned on at a predetermined time after the condition becomes true.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000274804A JP2002095239A (en) | 2000-09-11 | 2000-09-11 | Gate control circuit of self-arc-extinguishing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000274804A JP2002095239A (en) | 2000-09-11 | 2000-09-11 | Gate control circuit of self-arc-extinguishing element |
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| Publication Number | Publication Date |
|---|---|
| JP2002095239A true JP2002095239A (en) | 2002-03-29 |
Family
ID=18760510
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000274804A Pending JP2002095239A (en) | 2000-09-11 | 2000-09-11 | Gate control circuit of self-arc-extinguishing element |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004064822A (en) * | 2002-07-25 | 2004-02-26 | Fuji Electric Holdings Co Ltd | Driving method for voltage driving type semiconductor element |
| US11404953B2 (en) | 2018-12-11 | 2022-08-02 | Mitsubishi Electric Corporation | Drive circuit for power semiconductor element and power semiconductor module employing the same |
-
2000
- 2000-09-11 JP JP2000274804A patent/JP2002095239A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004064822A (en) * | 2002-07-25 | 2004-02-26 | Fuji Electric Holdings Co Ltd | Driving method for voltage driving type semiconductor element |
| US11404953B2 (en) | 2018-12-11 | 2022-08-02 | Mitsubishi Electric Corporation | Drive circuit for power semiconductor element and power semiconductor module employing the same |
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