JP2016225101A5

JP2016225101A5 -

Info

Publication number: JP2016225101A5
Application number: JP2015109457A
Authority: JP
Filing date: 2015-05-29
Publication date: 2017-03-09
Anticipated expiration: 2035-05-29

Description

上記課題を解決するために、本発明に係る電磁操作機構の駆動回路は、開閉動作させる電力機器に連結された可動鉄心と、前記可動鉄心を駆動する閉極駆動用コイル及び開極駆動用コイルと、前記閉極駆動用コイルに接続され、電力を供給する閉極用コンデンサと、前記閉極用コンデンサから前記閉極駆動用コイルへの電力の供給を制御する閉極駆動用スイッチ素子と、前記閉極駆動用スイッチ素子と前記閉極駆動用コイルとの間に設けられ、前記開極駆動用コイルが励磁され前記閉極駆動用コイルに誘導起電力が発生する場合に開路される保護用スイッチ素子と、電流減衰用コンデンサと電流減衰用抵抗とが直列接続され、これらに放電抵抗が並列接続されたループ回路に閉極側ループ回路スイッチ素子が直列接続された閉極側過電圧抑制回路と、前記閉極側過電圧抑制回路が前記閉極駆動用スイッチ素子に対して並列に接続されるとともに、前記閉極側ループ回路スイッチ素子の電圧を検出する閉極側電圧検出回路とを備え、前記閉極側電圧検出回路で検出された電圧により、前記閉極側ループ回路スイッチ素子及び前記閉極駆動用スイッチ素子の開閉状態を判定するとともに、前記閉極側ループ回路スイッチ素子及び前記閉極駆動用スイッチ素子を閉路することができない場合に前記保護用スイッチ素子を開路させないようにしたことを特徴とするものである。
In order to solve the above-described problems, a drive circuit for an electromagnetic operation mechanism according to the present invention includes a movable iron core connected to a power device that is opened and closed, a closing drive coil that drives the movable iron core, and an opening drive coil. A closing capacitor connected to the closing drive coil for supplying power, and a closing drive switch element for controlling the supply of power from the closing capacitor to the closing drive coil, A protective circuit provided between the closing drive switch element and the closing drive coil and opened when the opening driving coil is excited and an induced electromotive force is generated in the closing drive coil. Closing side overvoltage suppression in which a switching element, a current attenuating capacitor, and a current attenuating resistor are connected in series, and a closed loop circuit switching element is connected in series to a loop circuit in which a discharge resistor is connected in parallel And a closed-side voltage detection circuit for detecting the voltage of the closed-side loop circuit switch element, and the closed-side overvoltage suppression circuit is connected in parallel to the closed-circuit drive switch element. , the voltage detected by the closing-side voltage detecting circuit, together with determining the open or closed state of the closing-side loop circuit switching element and the closing drive switch elements, the closing-side loop circuit switching element and the closing The protective switch element is not opened when the pole drive switch element cannot be closed .

Claims

A movable iron core connected to a power device to be opened and closed;
A closing drive coil and an opening drive coil for driving the movable iron core;
A closing capacitor connected to the closing drive coil for supplying power;
A closing drive switch element for controlling power supply from the closing capacitor to the closing drive coil;
A protective circuit provided between the closing drive switch element and the closing drive coil and opened when the opening driving coil is excited and an induced electromotive force is generated in the closing drive coil. A switch element;
A closed side overvoltage suppression circuit in which a closed side loop circuit switch element is connected in series to a loop circuit in which a current attenuating capacitor and a current attenuating resistor are connected in series, and a discharge resistor is connected in parallel to these,
The closing side overvoltage suppression circuit is connected in parallel to the closing drive switch element, and includes a closing side voltage detection circuit that detects the voltage of the closing side loop circuit switch element,
Based on the voltage detected by the closed-side voltage detection circuit, the open-close state of the closed-side loop circuit switch element and the closed-circuit driving switch element is determined, and the closed-side loop circuit switch element and the closed pole are determined. A drive circuit for an electromagnetic operating mechanism , wherein the protection switch element is not opened when the drive switch element cannot be closed .

The drive circuit for an electromagnetic operating mechanism according to claim 1, wherein a resistor is connected in parallel with the protective switch element.

An opening capacitor connected to the opening driving coil and supplying electric power;
An opening driving switch element for controlling power supply from the opening capacitor to the opening driving coil;
An opening-side overvoltage suppression circuit in which an opening-side loop circuit switch element is connected in series to a loop circuit in which a current-attenuating capacitor and a current-attenuating resistor are connected in series, and a discharge resistor is connected in parallel;
The opening side overvoltage suppression circuit is connected in parallel to the opening driving switch element, and includes an opening side voltage detection circuit for detecting the voltage of the opening side loop circuit switch element,
The detected voltage by the opening-side voltage detecting circuit, the driving circuit of the solenoid-operated mechanism according to claim 1 or claim 2, characterized in that to determine the opening and closing state of the opening-side loop circuit switch element.

An opening driving switch element voltage detecting circuit for detecting a voltage of the opening driving switch element, and opening and closing of the opening driving switch element by a voltage detected by the opening driving switch element voltage detecting circuit; The drive circuit of the electromagnetic operating mechanism according to claim 3 , wherein the state is determined.