CN110635558A - Electromechanical integrated combined fast switch - Google Patents
Electromechanical integrated combined fast switch Download PDFInfo
- Publication number
- CN110635558A CN110635558A CN201910873619.6A CN201910873619A CN110635558A CN 110635558 A CN110635558 A CN 110635558A CN 201910873619 A CN201910873619 A CN 201910873619A CN 110635558 A CN110635558 A CN 110635558A
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- China
- Prior art keywords
- switch
- power electronic
- main contact
- alternating current
- energy storage
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Links
- 239000003990 capacitor Substances 0.000 claims abstract description 15
- 238000004146 energy storage Methods 0.000 claims abstract description 15
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 101100365087 Arabidopsis thaliana SCRA gene Proteins 0.000 description 7
- 101150105073 SCR1 gene Proteins 0.000 description 7
- 101100134054 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) NTG1 gene Proteins 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 101000668165 Homo sapiens RNA-binding motif, single-stranded-interacting protein 1 Proteins 0.000 description 4
- 102100039692 RNA-binding motif, single-stranded-interacting protein 1 Human genes 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses an electromechanical integrated combined type quick switch, and aims to provide an electromechanical integrated combined type quick switch which is simple in structure, capable of meeting the requirement of uninterrupted power supply of a load, high in through-current capacity, free of loss in operation and high in switching speed. The invention comprises a mechanical switch, an energy storage capacitor, a first power electronic switch, a second power electronic switch, a current limiting reactor, a first alternating current contactor switching main contact, a second alternating current contactor switching main contact and a charging unit. The invention is applied to the technical field of electromechanical integrated combined type quick switches.
Description
Technical Field
The invention relates to a switch, in particular to an electromechanical integrated combined type quick switch.
Background
Modern industrial park equipment tends to be integrated and precise, particularly in the semiconductor industries such as photoelectron, integrated circuit and chip manufacturing, equipment manufacturing industries such as whole vehicle manufacturing and equipment manufacturing, petrochemical industry and large-scale public place high-pressure gas discharge lighting lamps and other places, a large number of sensitive equipment taking CPU, microelectronics, power electronics, digitalization and informatization technologies as the core are adopted, and in order to improve the reliability of power supply, dual power supplies are generally adopted for power supply. When the upper level or the local part of the main power supply grid has a fault, in order to avoid quality accidents caused by voltage sag or short-time power failure of a sensitive load, the power supply is required to be switched to another power supply for supplying power within 5 ms.
The on-time of the existing mechanical quick switch is generally more than 5ms, the off-time of the switch body is less than 2ms, the arc extinguishing time is not considered, and the requirement is not met; the on-time of the power electronic switch is less than 1ms, and the off-time is less than 3ms, so that the use requirement can be met. However, when the power electronic switch normally operates, the power electronic switch has large loss, generates large heat and large noise, has weak capability of bearing overvoltage and overcurrent, and consumes a large amount of useless energy, thereby causing large economic loss.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides the electromechanical integrated combined type quick switch which has a simple structure, meets the uninterrupted power supply requirement of a load, has strong through-current capacity, no loss in operation and high switching speed.
The technical scheme adopted by the invention is as follows: the power supply comprises a mechanical switch FS, an energy storage capacitor C, a first power electronic switch SCR1, a second power electronic switch SCR2, a current-limiting reactor L, a first alternating current contactor switching main contact JC1, a second alternating current contactor switching main contact JC2 and a charging unit CDD; the energy storage capacitor C, the second alternating current contactor switching main contact JC2, the first power electronic switch SCR1 and the current limiting reactor L are connected in series and then connected in parallel with the mechanical switch FS, the energy storage capacitor C and the second alternating current contactor switching main contact JC2 are connected in series and then connected in parallel with the first alternating current contactor switching main contact JC1, the second power electronic switch SCR2 is connected in parallel with the first power electronic switch SCR1, and the charging unit CDD is connected in parallel with the energy storage capacitor C.
Further, the mechatronic combined type quick switch also comprises a zinc oxide nonlinear resistor NR which is connected with the mechanical switch FS in parallel.
Further, the mechanical switch FS is a mechanical eddy current driven vacuum fast switch.
The invention has the beneficial effects that: the invention adopts the design of combining a mechanical switch and an electronic switch, and comprises a mechanical switch FS, an energy storage capacitor C, a first power electronic switch SCR1, a second power electronic switch SCR2, a current-limiting reactor L, a first alternating current contactor switching main contact JC1, a second alternating current contactor switching main contact JC2 and a charging unit CDD.
Drawings
FIG. 1 is a functional block diagram of the present invention;
FIG. 2 is a schematic diagram of the present invention in an open state;
fig. 3 is a schematic diagram of the invention in a closing state.
Detailed Description
As shown in fig. 1, in the present embodiment, the electromechanical combined fast switch mainly includes a mechanical eddy current driven vacuum fast switch, a power electronic switch, an artificial zero-crossing arc extinguishing unit, a switching unit, and the like, and a single-phase schematic block diagram of the electromechanical combined fast switch is shown in fig. 1. Wherein the content of the first and second substances,
FS: the mechanical eddy current drives the vacuum fast switch and the main switch;
SCR1, SCR 2: the power electronic switch is used for assisting the main switch to be rapidly switched on and off;
c: the energy storage capacitor is used for generating artificial zero-crossing current and assisting the main switch to be quickly turned off;
l: a current limiting reactor for limiting the rate of change of current (di/dt) in the loop;
JC 1-2: the alternating current contactor switches a main contact and is used for switching the working mode of the power electronic switch;
NR: zinc oxide nonlinear resistance, overvoltage protection;
CDD: and the charging unit is used for charging the energy storage capacitor.
The working principle of the invention is as follows:
the electromechanical combined type quick switch has four operation states, namely a brake opening state, a quick conduction state, a switch closing state and a quick brake opening state when in normal operation. Under different operation states, the schematic diagrams are shown in fig. 2 and fig. 3.
The opening state: when the fast switch is in a switching-off state, the energy storage capacitor in fig. 1 is short-circuited, and the power electronic switch SCR is connected in parallel with the main switch through the current-limiting reactor L, as shown in fig. 2, and is in a standby conducting state;
and (3) quick conduction: when the fast switch receives a closing instruction, firstly, the power electronic switch is triggered to be quickly conducted within less than or equal to 0.5ms, a load is connected, meanwhile, a closing signal is given to the main switch, the main switch is conducted within 10ms of the conduction of the power electronic switch, the power electronic switch is in short circuit, the power electronic switch is withdrawn from operation, and the closing time of the fast switch is ensured to be less than or equal to 1 ms;
switching on the state: when the main switch is in a conducting state, the energy storage capacitor in fig. 1 is connected in series with the power electronic switch, and is charged to be in a waiting fast opening state, as shown in fig. 3;
and (3) rapid brake opening: when the fast switch receives a brake-off command, the fast switch is quickly switched off, trigger pulses are sent to the power electronic switches SCR1 and SCR2 after about 2ms of delay, and the energy storage capacitor C discharges to the fast switch through the SCR1 and the current-limiting reactor L. If the discharging current is opposite to the current flowing through the quick switch, the current flowing through the quick switch is forced to quickly pass through zero in the 1 st half wave of discharging, and the quick switch is completely disconnected; if the discharging current is in the same direction as the current flowing through the fast switch, the discharging current is opposite to the current flowing through the fast switch in the 2 nd half-wave of discharging, the current flowing through the fast switch is forced to quickly zero, and the fast switch is completely disconnected. The longest time in the process is less than or equal to 1ms, and the total opening time of the quick switch can be ensured to be less than or equal to 3 ms.
The invention is applied to the technical field of electromechanical integrated combined type quick switches.
While the embodiments of the present invention have been described in terms of practical embodiments, they are not to be construed as limiting the meaning of the present invention, and modifications of the embodiments and combinations with other embodiments will be apparent to those skilled in the art in light of the present description.
Claims (3)
1. Electromechanical integrated combined type quick switch is characterized in that: the electromechanical integrated combined type quick switch comprises a mechanical switch (FS), an energy storage capacitor (C), a first power electronic switch (SCR 1), a second power electronic switch (SCR 2), a current limiting reactor (L), a first alternating current contactor switching main contact (JC 1), a second alternating current contactor switching main contact (JC 2) and a charging unit (CDD); the energy storage capacitor (C), the second alternating current contactor switch main contact (JC 2), the first power electronic switch (SCR 1), the current limiting reactor (L) are connected in series and then connected in parallel with the mechanical switch (FS), the energy storage capacitor (C) and the second alternating current contactor switch main contact (JC 2) are connected in series and then connected in parallel with the first alternating current contactor switch main contact (JC 1), the second power electronic switch (SCR 2) is connected in parallel with the first power electronic switch (SCR 1), and the charging unit (CDD) is connected in parallel with the energy storage capacitor (C).
2. An mechatronic combination quick switch according to claim 1, characterized in that: the mechatronic combination quick switch further comprises a zinc oxide non-linear resistor (NR) connected in parallel with the mechanical switch (FS).
3. An mechatronic combination quick switch according to claim 1, characterized in that: the mechanical switch (FS) is a mechanical eddy current drive vacuum fast switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910873619.6A CN110635558A (en) | 2019-09-17 | 2019-09-17 | Electromechanical integrated combined fast switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910873619.6A CN110635558A (en) | 2019-09-17 | 2019-09-17 | Electromechanical integrated combined fast switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110635558A true CN110635558A (en) | 2019-12-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910873619.6A Pending CN110635558A (en) | 2019-09-17 | 2019-09-17 | Electromechanical integrated combined fast switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110635558A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09231877A (en) * | 1996-02-20 | 1997-09-05 | Fuji Electric Co Ltd | Direct current circuit breaker |
| CN107769195A (en) * | 2017-10-25 | 2018-03-06 | 清华大学 | Based on LC vibration forced commutation types mechanical switch, device and control method |
| CN107786188A (en) * | 2017-10-25 | 2018-03-09 | 清华大学 | Forced commutation type combined switch is vibrated based on LC |
| CN210431007U (en) * | 2019-09-17 | 2020-04-28 | 珠海华创泰能能源科技有限公司 | Electromechanical integrated combined fast switch |
-
2019
- 2019-09-17 CN CN201910873619.6A patent/CN110635558A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09231877A (en) * | 1996-02-20 | 1997-09-05 | Fuji Electric Co Ltd | Direct current circuit breaker |
| CN107769195A (en) * | 2017-10-25 | 2018-03-06 | 清华大学 | Based on LC vibration forced commutation types mechanical switch, device and control method |
| CN107786188A (en) * | 2017-10-25 | 2018-03-09 | 清华大学 | Forced commutation type combined switch is vibrated based on LC |
| CN210431007U (en) * | 2019-09-17 | 2020-04-28 | 珠海华创泰能能源科技有限公司 | Electromechanical integrated combined fast switch |
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Effective date of registration: 20231025 Address after: No. 128 Chuangxin Third Road, Tangjiawan Town, Zhuhai City, Guangdong Province, 519000 Applicant after: ZHUHAI TITANS TECHNOLOGY Co.,Ltd. Address before: Area F, 4th floor, No.1 Factory building, No.124 Keji 1st Road, high tech Zone, Zhuhai, Guangdong 519000 Applicant before: Zhuhai Huachuang taineng Energy Technology Co.,Ltd. |