CN217849045U

CN217849045U - Electronic mechanical hybrid high-speed switch based on IGBT

Info

Publication number: CN217849045U
Application number: CN202221452018.1U
Authority: CN
Inventors: 梁光耀; 宋长安; 王迪; 吴德梅
Original assignee: Jiaxing Fuer Electronic Technology Co ltd; Shanghai Baozhun Power Technology Co ltd
Current assignee: Jiaxing Fuer Electronic Technology Co ltd; Shanghai Baozhun Power Technology Co ltd
Priority date: 2022-06-11
Filing date: 2022-06-11
Publication date: 2022-11-18
Anticipated expiration: 2032-06-11

Abstract

The utility model discloses an electronic machinery hybrid high speed switch based on IGBT, electronic machinery hybrid high speed switch is including mechanical switch, electronic switch and control circuit, mechanical switch, electronic switch install in proper order on the A-C electrical return circuit, are equipped with B electrical return circuit between mechanical switch and the electronic switch, control circuit is used for providing switching signal for mechanical switch and electronic switch respectively, and receives mechanical switch and electronic switch's feedback information, the last D link that is used for receiving the given signal of control that is equipped with of control circuit. The utility model discloses an electronic machinery hybrid high speed switch based on IGBT not only has the advantage of mechanical switch's electrical disconnection point, also has electronic switches such as IGBT's high-speed advantage of opening and turn-off, and electronic switch's turn-off time generally can not exceed 10us, and this can be fast than 1000 times speed than mechanical switch.

Description

Electronic mechanical hybrid high-speed switch based on IGBT

Technical Field

The utility model belongs to the technical field of it is electric, concretely relates to electron mechanical hybrid high speed switch based on IGBT.

Background

With the continuous development of micro-grid systems and the continuous progress of technologies, the requirements of users on grid systems are higher and higher. Under the general condition, if the microgrid with grid-connected and off-grid switching is under the condition that the outer grid can be powered off at a certain moment, the microgrid system can be actively switched to an off-grid mode before the microgrid system, the microgrid is enabled to work under an independent power grid, the microgrid system is re-connected to the external power grid after the power is transmitted by the external power grid, and the conventional requirements can be met by the aid of the change-over switch of the microgrid and the outer grid. However, when the external power grid is disconnected after a fault occurs, in such a case, the switch of the microgrid and the external power grid needs a certain time to disconnect the power grid (generally, about 20 ms), so that a short voltage gap or even a power failure phenomenon occurs in the microgrid power grid. This situation is unacceptable for some demanding equipment. There is a need to develop a fast and reliable switching device to reduce and avoid this phenomenon.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses a technical scheme is: the electromechanical hybrid high-speed switch based on the IGBT comprises a mechanical switch, an electronic switch and a control circuit, wherein the mechanical switch and the electronic switch are sequentially arranged on an A-C electric loop, a B electric loop is arranged between the mechanical switch and the electronic switch, the control circuit is used for respectively providing switch signals for the mechanical switch and the electronic switch and receiving feedback information of the mechanical switch and the electronic switch, and a D connecting end used for receiving and controlling a given signal is arranged on the control circuit.

Preferably, the control circuit includes a photoelectric signal conversion circuit, a circuit breaker, and an IGBT control circuit.

Preferably, the mechanical switch is an intelligent circuit breaker, a universal circuit breaker or a contactor. Preferably, in the above technical solution, the electronic switch is a high-voltage bidirectional switch.

Preferably, in the above technical solution, the high-voltage bidirectional switch is an IGBT bidirectional switch or a bidirectional MOS transistor switch.

Preferably, in the above-described aspect, the a-C electrical circuit is a single-phase circuit or a three-phase circuit.

The utility model has the advantages that: the utility model discloses an electronic machinery hybrid high speed switch based on IGBT not only has the advantage of mechanical switch's electrical disconnection point, also has electronic switches such as IGBT's high-speed advantage of opening and turn-off, and electronic switch's turn-off time generally can not exceed 10us, and this can be fast than 1000 times speed than mechanical switch.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a control schematic of the control circuit;

FIG. 3 is a schematic diagram of the timing control of the present invention;

fig. 4 is a circuit diagram of the photoelectric signal conversion circuit;

fig. 5 is a circuit diagram of the breaker and IGBT control circuit.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, the high-speed switch of the electromechanical hybrid type based on the IGBT includes a mechanical switch 1, an electronic switch 2, and a control circuit 3, where the mechanical switch 1 and the electronic switch 2 are sequentially installed on an a-C electrical loop, a B electrical loop is provided between the mechanical switch 1 and the electronic switch 2, the control circuit 3 is configured to provide switching signals to the mechanical switch 1 and the electronic switch 2, respectively, and receive feedback information of the mechanical switch 1 and the electronic switch 2, and a D connection end configured to receive a control given signal is provided on the control circuit 3. The control circuit 3 only needs to provide the switching signals of the mechanical switch and the electronic switch and receives feedback information. The control given signal has a certain control logic sequence as shown in fig. 3.

Furthermore, the control circuit comprises a photoelectric signal conversion circuit, a circuit breaker and an IGBT control circuit. The circuit diagrams of the control circuit are shown in fig. 4 and 5.

Further, the mechanical switch 1 is an intelligent circuit breaker, a universal circuit breaker or a contactor.

Further, the electronic switch 2 is a high-voltage bidirectional switch.

Further, the high-voltage bidirectional switch is an IGBT bidirectional switch or a bidirectional MOS tube switch.

Further, the A-C electric loop is a single-phase loop or a three-phase loop.

The on-time sequence of the electromechanical hybrid high-speed switch is as follows:

when the end D requires the switch to be switched on, the control circuit 3 receives a command, firstly switches off the mechanical switch 1, and then switches off the electronic switch 2.

The turn-off sequence of the electromechanical hybrid high-speed switch is as follows:

when the end D requires the switch to be turned off, the control circuit 3 receives a command, firstly turns off the electronic switch 2, and then turns off the mechanical switch 1.

The delay time in the switching logic can be set by the control circuit.

It is worth mentioning that the utility model discloses a technical characteristics such as intelligent circuit breaker, universal circuit breaker, contactor, IGBT two-way switch, two-way MOS pipe switch that the patent application relates to should be regarded as prior art, these technical characteristics's specific structure, theory of operation and the control mode that may involve, spatial arrangement mode adopt the field conventional selection can, should not be regarded as the utility model discloses an invention point is in, the utility model discloses a do not further expand detailed description specifically.

Having described in detail preferred embodiments of the present invention, it is to be understood that modifications and variations can be made by persons skilled in the art without inventive faculty, and therefore all technical solutions which can be obtained by a person skilled in the art based on the concepts of the present invention through logic analysis, reasoning or limited experimentation will fall within the scope of protection defined by the claims.

Claims

1. The IGBT-based electronic mechanical hybrid high-speed switch is characterized by comprising a mechanical switch, an electronic switch and a control circuit, wherein the mechanical switch and the electronic switch are sequentially arranged on an A-C electrical loop, a B electrical loop is arranged between the mechanical switch and the electronic switch, the control circuit is used for respectively providing switching signals for the mechanical switch and the electronic switch and receiving feedback information of the mechanical switch and the electronic switch, and a D connecting end used for receiving and controlling given signals is arranged on the control circuit.

2. The IGBT-based electro-mechanical hybrid high speed switch of claim 1, wherein the control circuit comprises a photo-electric signal conversion circuit, a circuit breaker, and a control circuit for the IGBT.

3. The IGBT-based electromechanical hybrid high-speed switch according to claim 1, wherein the mechanical switch is a smart breaker, a universal breaker, or a contactor.

4. The IGBT-based electromechanical hybrid high-speed switch of claim 1, wherein the electronic switch is a high-voltage bi-directional switch.

5. The IGBT-based electromechanical hybrid high-speed switch of claim 4, wherein the high-voltage bi-directional switch is an IGBT bi-directional switch or a bi-directional MOS tube switch.

6. The IGBT-based electromechanical hybrid high-speed switch of claim 1, wherein the a-C electrical loop is a single-phase loop or a three-phase loop.