WO2018086500A1 - 动态电极灭弧装置 - Google Patents

动态电极灭弧装置 Download PDF

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Publication number
WO2018086500A1
WO2018086500A1 PCT/CN2017/109659 CN2017109659W WO2018086500A1 WO 2018086500 A1 WO2018086500 A1 WO 2018086500A1 CN 2017109659 W CN2017109659 W CN 2017109659W WO 2018086500 A1 WO2018086500 A1 WO 2018086500A1
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electrode
arc extinguishing
dynamic
extinguishing device
semiconductor device
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PCT/CN2017/109659
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English (en)
French (fr)
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郭桥石
聂嘉
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广州市金矢电子有限公司
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Publication of WO2018086500A1 publication Critical patent/WO2018086500A1/zh

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/003—Modifications for increasing the reliability for protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings

Definitions

  • the dynamic electrode arc extinguishing device of the invention belongs to the field of electricity, in particular to a dynamic electrode arc extinguishing device suitable for arc extinguishing of a dynamic electrode.
  • the object of the present invention is to invent a dynamic electrode arc extinguishing device for the prior art that a device with a dynamic electrode breaks the disadvantage of a large arc.
  • a dynamic electrode arc extinguishing device includes a first electrode, a second electrode, and an electronic arc extinguishing device; the first electrode is connected to the second electrode through the electronic arc extinguishing device; the first electrode and the second electrode are connected to the third electrode; The first electrode and the third electrode form a series circuit with the load to be controlled; the electronic arc extinguishing device is used to extinguish the arc when the first electrode is separated from the third electrode.
  • a dynamic electrode arc extinguishing device the relative state of the first electrode, the second electrode and the third electrode includes: the first electrode and the second electrode are simultaneously connected to the third electrode; the first electrode is separated from the third electrode and the second The electrode is kept in a state of being connected to the third electrode; the second electrode is separated from the third electrode.
  • a dynamic electrode arc extinguishing device the third electrode sliding or rolling connection with respect to the first electrode and the second electrode.
  • a dynamic electrode arc extinguishing device wherein the first electrode and the second electrode are brushes.
  • a dynamic electrode arc extinguishing device the third electrode being a motor rotor electrode.
  • a dynamic electrode arc extinguishing device wherein the first electrode and the second electrode are socket contacts.
  • a dynamic electrode arc extinguishing device wherein the first electrode and the second electrode are plug contacts.
  • a dynamic electrode arc extinguishing device wherein the first electrode and the second electrode are relatively static structures.
  • a dynamic electrode arc extinguishing device is a capacitor resistor series circuit, or a voltage limiting device, or a semiconductor arc extinguishing circuit.
  • a dynamic electrode arc extinguishing device is a two-terminal circuit comprising a capacitor, a semiconductor device, and a semiconductor device connected in series with a capacitor.
  • a dynamic electrode arc extinguishing device wherein a time interval at which the first electrode is separated from the third electrode and the second electrode is separated from the third electrode is greater than an on time of the semiconductor device.
  • a dynamic electrode arc extinguishing device the semiconductor device is a thyristor, and the trigger pole of the thyristor is connected to the main electrode of the thyristor.
  • a dynamic electrode arc extinguishing device further includes a first semiconductor device, the trigger pole of the thyristor being connected to the main electrode of the thyristor through the first semiconductor device.
  • a dynamic electrode arc extinguishing device the first semiconductor device having a turn-on voltage greater than 5 volts.
  • a dynamic electrode arc extinguishing device the first semiconductor device being a Zener diode.
  • a dynamic electrode arc extinguishing device further includes a first diode, a second diode, and a current limiting component, wherein the thyristor is a unidirectional thyristor, and the trigger pole of the unidirectional thyristor passes through the first diode and the unidirectional thyristor
  • the anode is connected, the second diode and the current limiting component form a first series circuit, and the first series circuit is connected in parallel with the unidirectional thyristor, and the first series circuit is used for discharging the capacitor.
  • a dynamic electrode arc extinguishing device further comprising a first semiconductor device, the first semiconductor device being in series with the first diode, the first semiconductor device having a turn-on voltage greater than 5 volts.
  • a dynamic electrode arc extinguishing device the first semiconductor device being a Zener diode.
  • the first electrode and the third electrode form a series circuit with the load to be controlled, and the working power is connected at both ends of the series circuit.
  • the load current passes through the first electrode and the third electrode.
  • the electronic arc extinguishing device When the first electrode is separated from the third electrode, the second electrode is kept connected to the third electrode, the electronic arc extinguishing device is turned on (or low resistance state), and the current passes through the electronic arc extinguishing device, the second electrode, and the third electrode;
  • the electronic arc extinguishing device is turned off (or high resistance state), the second electrode is separated from the third electrode, and the second electrode is separated from the third electrode by the second
  • the current of the electrode and the third electrode is smaller than the current through the first electrode and the third electrode (or the current is equal to zero).
  • the dynamic electrode arc extinguishing device of the invention solves the requirement of dynamic electrode arc extinguishing.
  • FIG. 1 is a schematic diagram and a state diagram of a first embodiment of a dynamic electrode arc extinguishing device of the present invention.
  • FIG. 2 is a schematic diagram and a second state diagram of the first embodiment of the dynamic electrode arc extinguishing device of the present invention.
  • FIG. 3 is a schematic diagram and a third state diagram of the first embodiment of the dynamic electrode arc extinguishing device of the present invention.
  • FIG. 4 is a schematic diagram showing an improved circuit of the electronic arc extinguishing device of the first embodiment of the dynamic electrode arc extinguishing device of the present invention.
  • Embodiment 1 of the dynamic electrode arc extinguishing device of the present invention is as shown in FIG. 1:
  • a dynamic electrode arc extinguishing device comprising a first electrode P1, a second electrode P2, and an electronic arc extinguishing device (A); the first electrode P1 is connected to the second electrode P2 through the electronic arc extinguishing device (A); the first electrode P1, the second electrode P2 is connected to the third electrode P3; the first electrode P1 and the third electrode P3 form a series circuit with the load M to be controlled; the electronic arc extinguishing device (A) is used for the first electrode P1 with respect to the third electrode The arc is extinguished when P3 is separated.
  • the relative states of the first electrode P1, the second electrode P2, and the third electrode P3 include:
  • the first electrode P1 is separated from the third electrode P3 and the second electrode P2 is kept in a state of being connected to the third electrode P3 (FIG. 2);
  • the second electrode P2 is separated from the third electrode P3 (Fig. 3).
  • the third electrode P3 is slidably or scroll-connected with respect to the first electrode P1 and the second electrode P2.
  • Electronic arc extinguishing device It is a semiconductor arc extinguishing circuit (A) (a capacitor resistor series circuit or a voltage limiting device can be used).
  • the semiconductor arc extinguishing circuit (A) shown in FIG. 1, FIG. 2, and FIG. 3 is a two-terminal circuit including a capacitor C1, a semiconductor device TR1 (which is a thyristor), a first semiconductor device Z1 (which is a Zener diode), and a semiconductor device.
  • TR1 is connected in series with the capacitor C1
  • the trigger electrode of the semiconductor device TR1 is connected to the main electrode (second anode) of the semiconductor device TR1 through the first semiconductor device Z1, and the first electrode P1 is separated from the third electrode P3 with respect to the second electrode P2.
  • the time interval at which the third electrode P3 is separated is greater than the on time of the semiconductor device TR1.
  • Figure 4 is a modified semiconductor arc extinguishing circuit (A): that is, a semiconductor arc extinguishing circuit (a capacitor resistor series circuit, or a voltage limiting device can be used), which is a two-terminal circuit including a capacitor C1 and a semiconductor device SCR1 (for a unidirectional thyristor, a first semiconductor device Z1, a first diode D1, a second diode D2, a current limiting element R1, a semiconductor device SCR1 connected in series with a capacitor C1, and a trigger pole of the semiconductor device SCR1 passes through the first diode
  • the tube D1 the first semiconductor device Z1 (which is a Zener diode) is connected to the anode of the semiconductor device SCR1, and the time interval at which the first electrode P1 is separated from the third electrode P3 and separated from the second electrode P2 by the third electrode P3 is larger than that of the semiconductor.
  • the first electrode P1 and the third electrode P3 form a series connection circuit with the load M to be controlled, and the first electrode P1 and the second electrode P2 are simultaneously connected to the third electrode.
  • the load M current passes through the first electrode P1 and the third electrode P3;
  • the semiconductor device TR1 quickly triggers conduction, and the current charges the capacitor C1 through the semiconductor device TR1, the second electrode P2, and the third electrode P3; the capacitor C1 is quickly fully charged, reaching the electronic arc extinguishing device (A) The purpose of arc extinguishing when one electrode P1 is separated from the third electrode P3, and then the second electrode P2 is separated from the third electrode P3.
  • the capacitor C1 is connected.
  • the next arc extinguishing process is prepared by the semiconductor device TR1, the first electrode P1, the third electrode P3, and the second electrode P2 being rapidly discharged.
  • the semiconductor device SCR1 quickly triggers conduction, and the current charges the capacitor C1 through the semiconductor device SCR1, the second electrode P2, and the third electrode P3; the capacitor C1 is quickly fully charged, reaching the electronic arc extinguishing device (A) The purpose of arc extinguishing when one electrode P1 is separated from the third electrode P3, and then the second electrode P2 is separated from the third electrode P3.
  • the capacitor C1 When the first electrode P1, the second electrode P2 and the third electrode P3 are connected at the same time, the capacitor C1 is connected.
  • the second diode D2, the current limiting element R1, the first electrode P1, the third electrode P3, and the second electrode P2 are rapidly discharged to prepare for the next arc extinguishing process.
  • the advantage of FIG. 4 is that the capacitor C1 discharge can pass the current limiting.
  • the component R1 is limited in current, which reduces the discharge shock and does not affect the arc extinguishing effect.
  • the three-electrode P3 is a rotor electrode of the motor, and is assembled by two sets of dynamic arc extinguishing devices of the present invention.
  • the first electrode P1 and the second electrode P2 are socket contacts for socket arc extinguishing; or the first electrode P1 and the second electrode P2 are plug contacts for plugs Arc out.
  • the opening voltage of the first semiconductor device Z1 of the electronic arc extinguishing device (A) is greater than 5V, which can greatly increase the arc extinguishing current of the instantaneous passing capacitor C1, and greatly reduce the capacity requirement of the capacitor C1, since the charging circuit of the capacitor C1 is connected in series with the load, when When the capacity of the capacitor C1 is large, the charging time constant becomes large, and a large current is generated when the second electrode P2 is separated from the third electrode P3, and an arc occurs, the response speed is slow, and the arc extinguishing power consumption is large, especially in the motor. Special considerations in electrode arc extinguishing.
  • the electronic arc extinguishing device (A) is a semiconductor arc extinguishing circuit, it may be implemented by other semiconductor arc extinguishing circuits, and is not limited to the drawing circuit.
  • the first electrode P1 and the second electrode P2 are relatively static structures, which are convenient for connecting the electronic arc extinguishing device;
  • the electronic arc extinguishing device adopts a method in which a semiconductor device is connected in series with a capacitor, and the circuit is simple and the cost is low;

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Inverter Devices (AREA)

Abstract

一种适合对动态电极灭弧的动态电极灭弧装置，其包括第一电极（P1）、第二电极（P2）、电子灭弧装置（A）；第一电极（P1）通过电子灭弧装置（A）与第二电极（P2）连接；第一电极（P1）、第二电极（P2）与第三电极（P3）连接；第一电极（P1）、第三电极（P3）与所要控制的负载形成串联回路；电子灭弧装置（A）用于第一电极（P1）相对于第三电极（P3）分离时灭弧，动态电极灭弧装置，解决了动态电极电弧大的问题。

Description

动态电极灭弧装置 技术领域
本发明动态电极灭弧装置属于电学领域,特别是一种适合对动态电极灭弧的动态电极灭弧装置。
背景技术
在各种用电场合，广泛使用电动工具、调压器、插头、插座等带动态电极的装置，但电动工具的电刷与转子工作时存在比较大的电弧，大大影响到电刷及转子的使用寿命，传统插头、插座带负载插拔时存在较大电弧的缺点。
发明内容
本发明的目的在于针对现有带动态电极的装置分断存在较大电弧的缺点，发明一种动态电极灭弧装置。
实现本发明的目的是通过以下技术方案来达到的：
一种动态电极灭弧装置，其包括第一电极、第二电极、电子灭弧装置；第一电极通过电子灭弧装置与第二电极连接；第一电极、第二电极与第三电极连接；第一电极、第三电极与所要控制的负载形成串联回路；电子灭弧装置用于第一电极相对于第三电极分离时灭弧。
一种动态电极灭弧装置，第一电极、第二电极与第三电极的相对状态包括：第一电极、第二电极同时与第三电极连接状态；第一电极与第三电极分离且第二电极保持与第三电极连接状态；第二电极与第三电极分离状态。
一种动态电极灭弧装置，第三电极相对于第一电极、第二电极滑动或滚动连接。
一种动态电极灭弧装置，第一电极、第二电极为电刷。
一种动态电极灭弧装置，第三电极为电机转子电极。
一种动态电极灭弧装置，第一电极、第二电极为插座触片。
一种动态电极灭弧装置，第一电极、第二电极为插头触片。
一种动态电极灭弧装置，第一电极与第二电极为相对静止结构。
一种动态电极灭弧装置，电子灭弧装置为一电容电阻串联电路，或一限压器件，或一半导体灭弧电路。
一种动态电极灭弧装置，半导体灭弧电路为二端电路，包括一电容、一半导体器件，半导体器件与电容串联。
一种动态电极灭弧装置，第一电极相对于第三电极分离与第二电极相对于第三电极分离的时间间隔大于半导体器件的导通时间。
一种动态电极灭弧装置，半导体器件为一晶闸管，晶闸管的触发极与晶闸管的主电极连接。
一种动态电极灭弧装置，还包括第一半导体器件，晶闸管的触发极通过第一半导体器件与晶闸管的主电极连接。
一种动态电极灭弧装置，第一半导体器件开启电压大于5伏特。
一种动态电极灭弧装置，第一半导体器件为稳压二极管。
一种动态电极灭弧装置，还包括第一二极管、第二二极管、一限流元件，晶闸管为单向晶闸管，单向晶闸管的触发极通过第一二极管与单向晶闸管的阳极连接，第二二极管与限流元件组成第一串联电路，第一串联电路与单向晶闸管并联，第一串联电路用于对电容放电。
一种动态电极灭弧装置，还包括第一半导体器件，第一半导体器件与第一二极管串联，第一半导体器件开启电压大于5伏特。
一种动态电极灭弧装置，第一半导体器件为稳压二极管。
工作原理：第一电极、第三电极与所要控制的负载形成串联回路两端连接工作电源，第一电极、第二电极同时与第三电极连接状态时，负载电流通过第一电极、第三电极；
第一电极与第三电极分离瞬间，第二电极保持与第三电极连接状态，电子灭弧装置导通(或低阻态)，电流通过电子灭弧装置、第二电极、第三电极；达到对第一电极相对于第三电极分离时灭弧的目的，然后电子灭弧装置截止(或高阻态)，第二电极与第三电极分离，第二电极与第三电极分离时通过第二电极、第三电极的电流要小于通过第一电极、第三电极的电流(或电流等于零)。
本发明动态电极灭弧装置，解决的动态电极灭弧的需求。
附图说明
图1本发明动态电极灭弧装置实施例一的原理图及状态图之一。
图2本发明动态电极灭弧装置实施例一的原理图及状态图之二。
图3本发明动态电极灭弧装置实施例一的原理图及状态图之三。
图4本发明动态电极灭弧装置实施例一的电子灭弧装置改进电路原理图。
具体实施方式
本发明动态电极灭弧装置的实施例一，如图1所示：
一种动态电极灭弧装置，其包括第一电极P1、第二电极P2、电子灭弧装置(A)；第一电极P1通过电子灭弧装置(A)与第二电极P2连接；第一电极P1、第二电极P2与第三电极P3连接；第一电极P1、第三电极P3与所要控制的负载M形成串联回路；电子灭弧装置(A)用于第一电极P1相对于第三电极P3分离时灭弧。
第一电极P1、第二电极P2与第三电极P3的相对状态包括：
第一电极P1、第二电极P2同时与第三电极P3连接状态(图1)；
第一电极P1与第三电极P3分离且第二电极P2保持与第三电极P3连接状态(图2)；
第二电极P2与第三电极P3分离状态(图3)。
第三电极P3相对于第一电极P1、第二电极P2滑动或滚动连接。
电子灭弧装置(A)：即为半导体灭弧电路(A)(可以采用一电容电阻串联电路，或一限压器件)。
图1、图2、图3所示的半导体灭弧电路(A)为二端电路，包括电容C1、半导体器件TR1(为一晶闸管)、第一半导体器件Z1(为稳压二极管)，半导体器件TR1与电容C1串联，半导体器件TR1的触发极通过第一半导体器件Z1与半导体器件TR1的主电极(第二阳极)连接，第一电极P1相对于第三电极P3分离与第二电极P2相对于第三电极P3分离的时间间隔大于半导体器件TR1的导通时间。
图4是一个改进的半导体灭弧电路(A)：即为半导体灭弧电路(可以采用一电容电阻串联电路，或一限压器件)，为二端电路，包括电容C1、半导体器件SCR1(为一单向晶闸管)、第一半导体器件Z1、第一二极管D1、第二二极管D2、限流元件R1，半导体器件SCR1与电容C1串联，半导体器件SCR1的触发极通过第一二极管D1、第一半导体器件Z1(为稳压二极管)与半导体器件SCR1的阳极连接，第一电极P1相对于第三电极P3分离与第二电极P2相对于第三电极P3分离的时间间隔大于半导体器件TR1的导通时间,第二二极管D2与限流元 件R1组成第一串联电路，第一串联电路与半导体器件SCR1并联，第一串联电路用于对电容C1放电。
工作原理：
如图1、图2、图3所示，第一电极P1、第三电极P3与所要控制的负载M形成串联回路两端连接工作电源，第一电极P1、第二电极P2同时与第三电极P3连接状态时，负载M电流通过第一电极P1、第三电极P3；
第一电极P1与第三电极P3分离瞬间，第二电极P2保持与第三电极P3连接状态，当第一电极P1与第三电极P3的电位差大于第一半导体器件Z1的开启电压时(建议大于5伏特)，半导体器件TR1快速触发导通，电流通过半导体器件TR1、第二电极P2、第三电极P3对电容C1充电；电容C1很快充满电，达到电子灭弧装置(A)对第一电极P1相对于第三电极P3分离时灭弧的目的，然后第二电极P2与第三电极P3分离，当下次第一电极P1、第二电极P2与第三电极P3同时连接时，电容C1通过半导体器件TR1、第一电极P1、第三电极P3、第二电极P2快速放电，准备下个灭弧过程。
当电子灭弧装置(A)采用图4电路时：
第一电极P1与第三电极P3分离瞬间，第二电极P2保持与第三电极P3连接状态，当第一电极P1与第三电极P3的电位差大于第一半导体器件Z1的开启电压时(建议大于5伏特)，半导体器件SCR1快速触发导通，电流通过半导体器件SCR1、第二电极P2、第三电极P3对电容C1充电；电容C1很快充满电，达到电子灭弧装置(A)对第一电极P1相对于第三电极P3分离时灭弧的目的，然后第二电极P2与第三电极P3分离，当下次第一电极P1、第二电极P2与第三电极P3同时连接时，电容C1通过第二二极管D2、限流元件R1、第一电极P1、第三电极P3、第二电极P2快速放电，准备下个灭弧过程，图4的优点在于，电容C1放电可以通过限流元件R1限流，减少放电冲击，同时不影响到灭弧效果。
以上实施例：
当应用于电机、调压器等灭弧时，第一电极P1、第二电极P2为电刷，第一电极P1与第二电极P2为相对静止结构，可以平行安装，应用于电机时，第三电极P3为电机转子电极，采用两套本发明动态灭弧装置对装。
当应用于接插件等灭弧时，第一电极P1、第二电极P2为插座触片，其用于插座灭弧；或第一电极P1、第二电极P2为插头触片，其用于插头灭弧。
电子灭弧装置(A)的第一半导体器件Z1的开启电压采用大于5V可以大大提高瞬间通过电容C1的灭弧电流，大大减少电容C1的容量要求，由于电容C1的充电回路与负载串联，当电容C1容量大时，充电时间常数变大，容易出现第二电极P2与第三电极P3分离时存在较大电流而出现电弧，响应速度慢，灭弧功耗大的问题，特别是在电机的电极灭弧中，特别需要考虑的问题。
电子灭弧装置(A)为半导体灭弧电路时，也可以采用其它半导体灭弧电路实现，不限于附图电路。
以上实施例具有以下优点：
1、采用第一电极P1与第二电极P2为相对静止结构，方便连接电子灭弧装置；
2、电子灭弧装置采用半导体器件串联一电容的方式，电路简单、成本低；
3、灭弧电流大、电容容量要求小、响应速度快、灭弧功耗小、成本低的优点。

Claims (18)

  1. 一种动态电极灭弧装置，其特征是：
    其包括第一电极、第二电极、电子灭弧装置；
    所述第一电极通过所述电子灭弧装置与所述第二电极连接；
    所述第一电极、所述第二电极与第三电极连接；
    所述第一电极、所述第三电极与所要控制的负载形成串联回路；
    所述电子灭弧装置用于所述第一电极相对于所述第三电极分离时灭弧。
  2. 根据权利要求1所述的动态电极灭弧装置，其特征是：
    所述第一电极、所述第二电极与所述第三电极的相对状态包括：
    所述第一电极、所述第二电极同时与所述第三电极连接状态；
    所述第一电极与所述第三电极分离且所述第二电极保持与所述第三电极连接状态；
    所述第二电极与所述第三电极分离状态。
  3. 根据权利要求1所述的动态电极灭弧装置，其特征是：所述第三电极相对于所述第一电极、所述第二电极滑动或滚动连接。
  4. 根据权利要求3所述的动态电极灭弧装置，其特征是：所述第一电极、所述第二电极为电刷。
  5. 根据权利要求3所述的动态电极灭弧装置，其特征是：所述第三电极为电机转子电极。
  6. 根据权利要求3所述的动态电极灭弧装置，其特征是：所述第一电极、所述第二电极为插座触片。
  7. 根据权利要求3所述的动态电极灭弧装置，其特征是：所述第一电极、所述第二电极为插头触片。
  8. 根据权利要求1所述的动态电极灭弧装置，其特征是：所述第一电极与所述第二电极为相对静止结构。
  9. 根据权利要求1至8任一项所述的动态电极灭弧装置，其特征是：所述电子灭弧装置为一电容电阻串联电路，或一限压器件，或一半导体灭弧电路。
  10. 根据权利要求9所述的动态电极灭弧装置，其特征是：所述半导体灭弧电路为二端电路，包括一电容、一半导体器件，所述半导体器件与所述电容串联。
  11. 根据权利要求10所述的动态电极灭弧装置，其特征是：所述第一电极相对于所述第三电极分离与所述第二电极相对于所述第三电极分离的时间间隔大于所 述半导体器件的导通时间。
  12. 根据权利要求10所述的动态电极灭弧装置，其特征是：所述半导体器件为一晶闸管，所述晶闸管的触发极与所述晶闸管的主电极连接。
  13. 根据权利要求12所述的动态电极灭弧装置，其特征是：还包括第一半导体器件，所述晶闸管的触发极通过所述第一半导体器件与所述晶闸管的主电极连接。
  14. 根据权利要求13所述的动态电极灭弧装置，其特征是：所述第一半导体器件开启电压大于5伏特。
  15. 根据权利要求14所述的动态电极灭弧装置，其特征是：第一半导体器件为稳压二极管。
  16. 根据权利要求12所述的动态电极灭弧装置，其特征是：还包括第一二极管、第二二极管、一限流元件，所述晶闸管为单向晶闸管，所述单向晶闸管的触发极通过所述第一二极管与所述单向晶闸管的阳极连接，所述第二二极管与所述限流元件组成第一串联电路，所述第一串联电路与所述单向晶闸管并联，所述第一串联电路用于对所述电容放电。
  17. 根据权利要求16所述的动态电极灭弧装置，其特征是：还包括第一半导体器件，所述第一半导体器件与所述第一二极管串联，所述第一半导体器件开启电压大于5伏特。
  18. 根据权利要求17所述的动态电极灭弧装置，其特征是：所述第一半导体器件为稳压二极管。
PCT/CN2017/109659 2016-11-12 2017-11-07 动态电极灭弧装置 WO2018086500A1 (zh)

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