[go: up one dir, main page]

JPH0232875B2 - HANDOTAIKAIHEISOCHI - Google Patents

HANDOTAIKAIHEISOCHI

Info

Publication number
JPH0232875B2
JPH0232875B2 JP598983A JP598983A JPH0232875B2 JP H0232875 B2 JPH0232875 B2 JP H0232875B2 JP 598983 A JP598983 A JP 598983A JP 598983 A JP598983 A JP 598983A JP H0232875 B2 JPH0232875 B2 JP H0232875B2
Authority
JP
Japan
Prior art keywords
transistor
semiconductor
current
controlled rectifier
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 - Lifetime
Application number
JP598983A
Other languages
Japanese (ja)
Other versions
JPS58204764A (en
Inventor
Yoshio Terasawa
Hiroshi Fukui
Yoshimi Sakurai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP598983A priority Critical patent/JPH0232875B2/en
Publication of JPS58204764A publication Critical patent/JPS58204764A/en
Publication of JPH0232875B2 publication Critical patent/JPH0232875B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M1/00Details of apparatus for conversion
    • H02M1/08Circuits 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)

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は、小さい制御電力により負荷電流を遮
断することのできる半導体開閉装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a semiconductor switchgear capable of interrupting load current with small control power.

〔従来技術〕[Prior art]

半導体制御整流装置で導通状態から非導通状態
へ強制的に移行(ターンオフ)させるためには、
負荷電流の1/2〜1/3程度の大容量の制御電流を必
要としていた。
In order to forcibly transition from a conductive state to a non-conductive state (turn-off) in a semiconductor-controlled rectifier,
A large capacity control current of about 1/2 to 1/3 of the load current was required.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、小さい制御電力でかつ簡単な
回路構成により負荷電流を遮断できる半導体開閉
装置を提供することにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide a semiconductor switchgear that can cut off load current with small control power and a simple circuit configuration.

〔発明の概要〕[Summary of the invention]

かかる目的を奏する本発明半導体開閉装置の特
徴とするところは、半導体制御整流装置とトラン
ジスタとを並例接続して、負荷電流の導通を半導
体制御整流装置で、負荷電流の遮断をトランジス
タで行なうようにした点にある。
A feature of the semiconductor switchgear of the present invention that achieves the above object is that a semiconductor-controlled rectifier and a transistor are connected in parallel, so that conduction of the load current is performed by the semiconductor-controlled rectifier and interruption of the load current is performed by the transistor. It is in the point that I made it.

本発明の他の特徴は、トランジスタの導通時の
エミツタ・コレクタ間電圧を半導体制御整流装置
のフインガ電圧より小さくして、半導体制御整流
装置からトランジスタへの負荷電流を転流を確実
にした点にある。フインガ電圧とは、半導体制御
整流装置に負荷電流が持続して流れるために必要
なアノード・カソード間電圧の最小値をいう。
Another feature of the present invention is that the emitter-collector voltage when the transistor is conductive is made smaller than the finger voltage of the semiconductor-controlled rectifier to ensure commutation of the load current from the semiconductor-controlled rectifier to the transistor. be. The finger voltage is the minimum value of the anode-cathode voltage required for a load current to continuously flow through the semiconductor-controlled rectifier.

本発明の更に他の特徴は、半導体制御整流装置
のゲートとトランジスタのベースとの間にトラン
ジスタに対してオン信号として、半導体制御整流
装置に対してオフ信号として作用する電源を接続
し、負荷電流の半導体制御整流装置からトランジ
スタへの転流を容易にした点にある。
Still another feature of the present invention is that a power source is connected between the gate of the semiconductor-controlled rectifier and the base of the transistor to act as an on signal for the transistor and as an off signal for the semiconductor-controlled rectifier, so that the load current The point is that commutation from the semiconductor-controlled rectifier to the transistor is facilitated.

〔発明の実施例〕[Embodiments of the invention]

第1図に本発明の半導体開閉装置の電気的回路
図を示す。半導体制御整流装置(以下サイリスタ
と称す)ThのアノードAとnpnトランジスタTr
のコレクタCを接続し、サイリスタThのカソー
ドKとトランジスタTrのエミツタEを接続する。
ESは主電源、RLは負荷、Epoはゲート電源、Spo
始動スイツチである。第1図の回路構成ではサイ
リスタの遮断時にトランジスタTrのベースBと
サイリスタThのゲートGとの間に電圧Epffを印加
してベース電流iBを通電し、トランジスタiTrが流
れるようになつている。この方式でのベース電流
iBは、同時にサイリスタThに対するターンオフ
用ゲート電流として働く。したがつて、単にトラ
ンジスタを導通させる場合に比較して負荷電流iL
をしや断する能力が大きい。
FIG. 1 shows an electrical circuit diagram of a semiconductor switchgear according to the present invention. The anode A of the semiconductor controlled rectifier (hereinafter referred to as thyristor) Th and the npn transistor Tr
, and the cathode K of the thyristor Th and the emitter E of the transistor Tr.
E S is the main power supply, R L is the load, E po is the gate power supply, and S po is the start switch. In the circuit configuration shown in Figure 1, when the thyristor is cut off, a voltage E pff is applied between the base B of the transistor Tr and the gate G of the thyristor Th, and the base current i B is passed, so that the transistor i Tr starts flowing. There is. Base current in this method
i B simultaneously serves as a turn-off gate current for the thyristor Th. Therefore, compared to the case where the transistor is simply made conductive, the load current i L
He has a great ability to refuse.

負荷電流iLをしや断するためには、サイリスタ
のフインガ電圧よりも低いエミツタ・コレクタ間
電圧で負荷電流iLがトランジスタTrに流れるよう
に、十分な大きさのベース電流をトランジスタに
供給してそのインピーダンスを低下させる。
In order to cut off the load current i L , a sufficiently large base current must be supplied to the transistor so that the load current i L flows through the transistor Tr at an emitter-collector voltage lower than the finger voltage of the thyristor. lowers its impedance.

第1図の回路図におけるアノードA−カソード
K間電圧VAK、負荷電流iL、サイリスタ電流iTh
トランジスタ電流iTr、ならびに制御電流(iGpo
ベース電流iBの各波形を第2図a〜cに示す。ま
たトランジスタあるいはサイリスタのみを単独に
用いて負荷電流iLを通電遮断する場合の制御電流
波形を、本発明のそれと比較するために同図dお
よびeに示す。第1図に示すスイツチSpoを一時
的に閉成してサイリスタのゲートにターンオン用
ゲート電流(iGpoを通電し、負荷電流iLがサイリ
スタTh、負荷RLを通つて流れるようにする。こ
の場合iL=iThとなる。次に負荷電流iLをしや断し
ようとする直前に、スイツチSpffを閉成してトラ
ンジスタTrにベース電流iBを通電する。トランジ
スタTrは低インピーダンスとなり、A−K間電
圧VAKは、サイリスタ電流iThが持続して流れるの
に必要な値(フインガ電圧)よりも小さくなる。
その結果、サイリスタ電流iThは時間の経過と共
に減少し、負荷電流iLはトランジスタTrを通つて
流れるようになる。この負荷電流は、サイリスタ
電流iThが零になると、すなわちゲートG−カソ
ードK間がオフ状態になると、ベース電流iBが零
になるため、トランジスタTrはオフ状態となり、
トランジスタ電流iTrも負荷電流iLも共に流れなく
なる。
In the circuit diagram of FIG. 1, anode A-cathode K voltage V AK , load current i L , thyristor current i Th ,
Transistor current i Tr , as well as control current (i G ) po ,
The waveforms of the base current iB are shown in FIGS. 2a to 2c. Control current waveforms when the load current i L is cut off using only a transistor or thyristor are shown in FIGS. d and e for comparison with those of the present invention. The switch S po shown in Fig. 1 is temporarily closed and the turn-on gate current (i G ) po is applied to the gate of the thyristor, so that the load current i L flows through the thyristor Th and the load R L. do. In this case, i L =i Th . Next, just before the load current i L is about to be cut off, the switch S pff is closed and the base current i B is passed through the transistor Tr. The impedance of the transistor Tr becomes low, and the voltage V AK between A and K becomes smaller than the value (finger voltage) necessary for the thyristor current i Th to continuously flow.
As a result, the thyristor current i Th decreases over time, and the load current i L begins to flow through the transistor Tr. When the thyristor current i Th becomes zero, that is, when the gate G and cathode K become off, the base current i B becomes zero, so the transistor Tr becomes off.
Both the transistor current i Tr and the load current i L stop flowing.

負荷電流iLが8(A)の場合について、ターンオフ
タイムtpff(第2図に示すようにベース電流iBをオ
フにしてからサイリスタ電流iThが零になるまで
の時間)とターンオフゲインGpff(=iL/iB)を実
測した結果を第3図に示す。曲線はゲートター
ンオフサイリスタ(GTO)だけを用いた従来装
置の例、曲線は本発明装置の例である。この図
から本発明装置のターンオフ性能が著しく優れて
いることがわかる。例えば、ターンオフタイム
10μsの場合のターンオフゲインは、従来装置では
8であるのに対し本発明装置では46と約6倍にな
つている。即ち、本発明装置によれば従来装置の
1/6の制御電力で負荷電流をしや断できるのであ
る。
When the load current i L is 8 (A), the turn-off time t pff (the time from turning off the base current i B until the thyristor current i Th becomes zero as shown in Figure 2) and the turn-off gain G Figure 3 shows the results of actually measuring pff (=i L /i B ). The curve is an example of a conventional device using only a gate turn-off thyristor (GTO), and the curve is an example of the device of the present invention. It can be seen from this figure that the turn-off performance of the device of the present invention is extremely excellent. For example, turn-off time
The turn-off gain in the case of 10 μs is 8 in the conventional device, whereas it is 46 in the device of the present invention, which is about 6 times. That is, according to the device of the present invention, the load current can be cut off with one-sixth the control power of the conventional device.

本発明では、トランジスタTrに通電する期間
は、ターンオフタイムtpff(第2図、第3図参照)
の間だけである。したがつて、トランジスタのみ
を用いて負荷電流を数百μs〜数ms通電する従来
の方法に比較して、トランジスタの通電期間を数
μs〜数十μsにできる本発明ではトランジスタの温
度上昇を格段に小さくできる。
In the present invention, the period during which the transistor Tr is energized is the turn-off time t pff (see Figures 2 and 3).
Only between. Therefore, compared to the conventional method that uses only transistors and conducts the load current for hundreds of microseconds to several milliseconds, the present invention, which allows the current-carrying period of the transistor to range from several microseconds to several tens of microseconds, significantly reduces the temperature rise of the transistor. It can be made smaller.

〔発明の効果〕〔Effect of the invention〕

以上述べたように本発明では大きな負荷電流を
小さい制御電流でオン、オフできる特長がある。
さらに、トランジスタのみを用いる従来の方法に
比べて、第2図に示すように制御電流の通電期間
を短かくできる。したがつて、制御電源の小型
化、原価低減を達成できる。
As described above, the present invention has the advantage that a large load current can be turned on and off with a small control current.
Furthermore, compared to the conventional method using only transistors, the period during which the control current is applied can be shortened, as shown in FIG. Therefore, it is possible to downsize the control power source and reduce costs.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の半導体開閉装置の電気的回路
図、第2図は各部の電圧電流波形図、第3図はタ
ーンオフゲインとターンオフタイムとの関係を示
すグラフである。 Th……サイリスタ、Tr……トランジスタ、
Epff……電源。
FIG. 1 is an electrical circuit diagram of the semiconductor switchgear of the present invention, FIG. 2 is a voltage and current waveform diagram of each part, and FIG. 3 is a graph showing the relationship between turn-off gain and turn-off time. Th...Thyristor, Tr...Transistor,
E pff ...Power supply.

Claims (1)

【特許請求の範囲】[Claims] 1 半導体制御整流装置と、そのコレクタ及びエ
ミツタがそれぞれ半導体制御整流装置のアノード
及びカソードに接続され、その導通時におけるエ
ミツタ・コレクタ間電圧が半導体制御整流装置の
フインガ電圧より小さいトランジスタと、半導体
制御整流装置のゲートとトランジスタのベース間
に接続され、半導体制御整流装置に対しては導通
状態から非導通状態に、トランジスタに対しては
非導通状態から導通状態に移行せしめるように作
用する電源と、を具備することを特徴とする半導
体開閉装置。
1. A semiconductor-controlled rectifier, a transistor whose collector and emitter are respectively connected to the anode and cathode of the semiconductor-controlled rectifier, and whose emitter-collector voltage when conductive is smaller than the finger voltage of the semiconductor-controlled rectifier, and a semiconductor-controlled rectifier. a power supply connected between the gate of the device and the base of the transistor and acting to cause the semiconductor-controlled rectifier device to transition from a conductive state to a non-conductive state and for the transistor to transition from a non-conductive state to a conductive state; A semiconductor switchgear comprising:
JP598983A 1983-01-17 1983-01-17 HANDOTAIKAIHEISOCHI Expired - Lifetime JPH0232875B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP598983A JPH0232875B2 (en) 1983-01-17 1983-01-17 HANDOTAIKAIHEISOCHI

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP598983A JPH0232875B2 (en) 1983-01-17 1983-01-17 HANDOTAIKAIHEISOCHI

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP50136221A Division JPS5260560A (en) 1975-11-14 1975-11-14 Semiconductor switch

Publications (2)

Publication Number Publication Date
JPS58204764A JPS58204764A (en) 1983-11-29
JPH0232875B2 true JPH0232875B2 (en) 1990-07-24

Family

ID=11626199

Family Applications (1)

Application Number Title Priority Date Filing Date
JP598983A Expired - Lifetime JPH0232875B2 (en) 1983-01-17 1983-01-17 HANDOTAIKAIHEISOCHI

Country Status (1)

Country Link
JP (1) JPH0232875B2 (en)

Also Published As

Publication number Publication date
JPS58204764A (en) 1983-11-29

Similar Documents

Publication Publication Date Title
US4663547A (en) Composite circuit for power semiconductor switching
US4366522A (en) Self-snubbing bipolar/field effect (biofet) switching circuits and method
US4672245A (en) High frequency diverse semiconductor switch
SE8003730L (en) VMOS / BIPOLER DOUBLE-RIGED SWITCH
JPH11285238A (en) Gate drive circuit for semiconductor device of insulating gate type and power converter device
EP0785627A3 (en) Semiconductor switching apparatus and method of controlling a semiconductor switching element
US4740722A (en) Composite semiconductor device
US4217504A (en) Semiconductor switch with thyristors
DE59813499D1 (en) Control circuit for switching on and off of a turn-off thyristor
JPH0232875B2 (en) HANDOTAIKAIHEISOCHI
JPS60107917A (en) Composite semiconductor switch
GB2148622A (en) Electronic control circuit
US3840275A (en) Switching circuit utilizing gate controlled switching device
US5030862A (en) Turn-off circuit for gate turn off SCR
JP2744015B2 (en) Semiconductor switching equipment
EP0301761A3 (en) Thyristors
JPS6349099Y2 (en)
JPS60257054A (en) Excitation circuit
RU1810999C (en) Transistorized switch
JP3158495B2 (en) Control method of semiconductor device
JPS61154311A (en) Base circuit
JPS5775032A (en) Gate circuit for gate turn-off thyristor
JPS5775033A (en) Gate circuit for gate turn-off thyristor
JPS5766668A (en) 2-gate semiconductor device
JPH01170366A (en) Pulse transformer insulated type gate circuit for power semiconductor element