阅读说明：本技术 一种混合式控制开关 (Hybrid control switch ) 是由 胡四全 范彩云 常忠廷 甄帅 张坤 李娟� 才利存 胡永雄 董意锋 于 2019-09-26 设计创作，主要内容包括：本发明涉及电气开关领域,特别是一种混合式控制开关,包括机械开关、控制装置以及可控放电间隙/半导体开关,可控放电间隙/半导体开关并联设置在机械开关的两端；控制装置连接合闸触发信号,当控制装置接收到合闸触发信号时,同时控制机械开关以及可控放电间隙/半导体开关合闸；当机械开关合闸完成后,控制可控放电间隙/半导体开关分闸。可控放电间隙/半导体开关合闸,整个电路导通,提高电路导通的响应速度,避免了机械开关动作造成的延迟；随后机械开关合闸成功,控制可控放电间隙/半导体开关分闸,电流应力由机械开关承受,避免了可控放电间隙/半导体开关长时间承受电流应力,该控制开关兼顾动作时间短和通流能力强的特性。(The invention relates to the field of electrical switches, in particular to a hybrid control switch, which comprises a mechanical switch, a control device and a controllable discharge gap/semiconductor switch, wherein the controllable discharge gap/semiconductor switch is arranged at two ends of the mechanical switch in parallel; the control device is connected with a closing trigger signal, and when the control device receives the closing trigger signal, the control device controls the mechanical switch and the controllable discharge gap/semiconductor switch to close; and after the mechanical switch is switched on, controlling the controllable discharge gap/the semiconductor switch to be switched off. The controllable discharge gap/the semiconductor switch is switched on, the whole circuit is conducted, the response speed of the circuit conduction is improved, and the delay caused by the action of a mechanical switch is avoided; and then the mechanical switch is successfully switched on, the controllable discharge gap/the semiconductor switch is controlled to be switched off, the current stress is borne by the mechanical switch, the controllable discharge gap/the semiconductor switch is prevented from bearing the current stress for a long time, and the control switch has the characteristics of short action time and strong through-current capability.)

1. A hybrid control switch is characterized by comprising a mechanical switch, a control device and controllable discharge gaps, wherein the controllable discharge gaps are arranged at two ends of the mechanical switch in parallel;

the control device is connected with the mechanical switch in a control mode, the control device is connected with the controllable discharge gap in a control mode, the control device is connected with a closing trigger signal, and when the control device receives the closing trigger signal, the control device controls the mechanical switch and the controllable discharge gap to close; and after the mechanical switch completes switching on, controlling the controllable discharge gap to switch off.

2. The hybrid control switch of claim 1, wherein the control means comprises a first control module and a second control module; the first control module is in control connection with the controllable discharge gap, and the second control module is in control connection with the mechanical switch; the first control module and the second control module are both connected with the closing trigger signal.

3. The hybrid control switch of claim 2, wherein the first control module comprises a boost circuit; the primary circuit of the booster circuit is connected in series with an energy storage capacitor and a controllable switching tube, and the secondary circuit of the booster circuit is connected with the trigger end of the controllable discharge gap; and the control end of the controllable switching tube is connected with the switching-on trigger signal.

4. The hybrid control switch as in claim 3, wherein the controllable switching transistor is an IGBT device.

5. A hybrid control switch is characterized by comprising a mechanical switch, a control device and a semiconductor switch, wherein the semiconductor switch is arranged at two ends of the mechanical switch in parallel;

the control device is connected with the mechanical switch in a control mode, the control device is connected with the semiconductor switch in a control mode, the control device is connected with a closing trigger signal, and when the control device receives the closing trigger signal, the control device controls the mechanical switch and the semiconductor switch to be closed; and after the mechanical switch is switched on, controlling the semiconductor switch to be switched off.

6. The hybrid control switch of claim 5, wherein the control means comprises a first control module and a second control module; the first control module is connected with a semiconductor switch in a control mode, and the second control module is connected with the mechanical switch in a control mode; the first control module and the second control module are both connected with the closing trigger signal.

Technical Field

The invention relates to the field of electrical switches, in particular to a hybrid control switch.

Background

With the rapid development of science and technology in the electrical field, higher requirements are put forward on the action delay time and the action reliability of the mechanical switch. The conventional mechanical switch adopts a mode of mechanical energy storage and pure mechanical mechanism action to realize the on-off operation of a primary electric circuit, but because of mechanical inertia, the action process of the pure mechanical mechanism needs a certain time, so that the closing time delay of the conventional mechanical switch is longer, and the requirement on the closing time of the mechanical switch under special application occasions cannot be met. In addition, although the pure electronic switch or the gap switch can achieve higher closing response speed, the pure electronic switch cannot bear large current stress for a long time after being closed due to the limitation of the through-current capacity of the electronic device.

Disclosure of Invention

The invention aims to provide a hybrid control switch, which is used for solving the problem that the conventional control switch is short in action time and high in current capacity and cannot be compatible.

In order to achieve the above object, the present invention provides a hybrid control switch, comprising a mechanical switch, a control device and controllable discharge gaps, wherein the controllable discharge gaps are arranged at two ends of the mechanical switch in parallel;

the control device is connected with the mechanical switch in a control mode, the control device is connected with the controllable discharge gap in a control mode, the control device is connected with a closing trigger signal, and when the control device receives the closing trigger signal, the control device controls the mechanical switch and the controllable discharge gap to close; and after the mechanical switch completes switching on, controlling the controllable discharge gap to switch off.

The controllable discharging gap is switched on if a trigger signal for closing the mechanical switch is received, the whole circuit is conducted, and the response speed of circuit conduction is improved and delay caused by action of the mechanical switch is avoided compared with a simple mechanical switch in the action process of the mechanical switch; and then the mechanical switch is successfully switched on, and the conduction voltage drop of the mechanical switch is smaller than the conduction voltage drop of the controllable discharge gap, so that the controllable discharge gap is controlled to be switched off, the current stress is borne by the mechanical switch, the controllable discharge gap is prevented from bearing the current stress for a long time, and the control switch has the characteristics of short action time and strong through-current capability.

Further, the control device comprises a first control module and a second control module; the first control module is in control connection with the controllable discharge gap, and the second control module is in control connection with the mechanical switch; the first control module and the second control module are both connected with the closing trigger signal. Different modules are adopted to respectively control the mechanical switch and the controllable discharge gap, the control of the mechanical switch can adopt the existing control mode, the change of the existing structure is avoided, and the complexity of the control structure is reduced.

Furthermore, in order to simply, safely and accurately realize the opening and closing control of the controllable discharge gap, the first control module comprises a booster circuit; the primary circuit of the booster circuit is connected in series with an energy storage capacitor and a controllable switching tube, and the secondary circuit of the booster circuit is connected with the trigger end of the controllable discharge gap; and the control end of the controllable switching tube is connected with the switching-on trigger signal.

Further, in order to accurately respond to the closing trigger signal, the controllable switch tube is an IGBT device.

The invention provides a hybrid control switch, which comprises a mechanical switch, a control device and semiconductor switches, wherein the semiconductor switches are arranged at two ends of the mechanical switch in parallel;

the control device is connected with the mechanical switch in a control mode, the control device is connected with the semiconductor switch in a control mode, the control device is connected with a closing trigger signal, and when the control device receives the closing trigger signal, the control device controls the mechanical switch and the semiconductor switch to be closed; and after the mechanical switch is switched on, controlling the semiconductor switch to be switched off.

The semiconductor switch has the advantages that the mechanical switch is connected into the circuit, if a trigger signal for closing the mechanical switch is received, the semiconductor switch is switched on, the whole circuit is conducted, and the response speed of circuit conduction is improved and delay caused by action of the mechanical switch is avoided compared with a simple mechanical switch in the action process of the mechanical switch; and then the mechanical switch is successfully switched on, because the conduction voltage drop of the mechanical switch is smaller than the conduction voltage drop of the semiconductor switch, the semiconductor switch is controlled to be switched off, and the current stress is borne by the mechanical switch, so that the semiconductor switch is prevented from bearing the current stress for a long time.

Further, the control device comprises a first control module and a second control module; the first control module is connected with a semiconductor switch in a control mode, and the second control module is connected with the mechanical switch in a control mode; the first control module and the second control module are both connected with the closing trigger signal. The mechanical switch and the semiconductor switch are respectively controlled by different modules, the control of the mechanical switch can adopt the existing control mode, the change of the existing structure is avoided, and the complexity of the control structure is reduced.

Drawings

FIG. 1 is a hybrid control switch topology of the present invention;

FIG. 2 is an electrical schematic of the hybrid control switch of the present invention;

FIG. 3 is a schematic diagram of a first control module in the hybrid control switch of the present invention;

FIG. 4 is a schematic diagram of a controllable discharge gap structure in the hybrid control switch according to the present invention;

in the figure, 1 is a controllable discharge gap, 2 is a cavity, and 3 is an inner coating.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.