CN104952664A - Direct current high-voltage switch without arc discharge - Google Patents
Direct current high-voltage switch without arc discharge Download PDFInfo
- Publication number
- CN104952664A CN104952664A CN201510334898.0A CN201510334898A CN104952664A CN 104952664 A CN104952664 A CN 104952664A CN 201510334898 A CN201510334898 A CN 201510334898A CN 104952664 A CN104952664 A CN 104952664A
- Authority
- CN
- China
- Prior art keywords
- oxide
- semiconductor
- metal
- relay
- chip microcomputer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H01H33/02—Details
- H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
- H01H33/596—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle for interrupting dc
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Keying Circuit Devices (AREA)
Abstract
The invention discloses a direct current high-voltage switch without arc discharge. The direct current high-voltage switch comprises a single chip microcomputer and a MOS (metal oxide semiconductor) tube, wherein a grid electrode, a drain electrode and a source electrode of the MOS tube are respectively connected into an IO (input/output) port of the single chip microcomputer through a MOS tube driving circuit, and in addition, the drain electrode and the source electrode of the MOS tube are respectively connected with a relay through a driving circuit of the relay. The direct current high-voltage switch has the advantages that the direct current high-voltage switch is realized at low cost, the equipment reliability is improved, and the arc discharge phenomenon of the switch is avoided.
Description
Technical field
The present invention relates to the direct-current high-voltage switch device applied in photovoltaic plant, specifically a kind of direct-current high-voltage switch without arc discharge.
Background technology
common high-voltage switch gear is generally carry out switching over for alternating current, and the relay that adopts carries out switch control rule more.Because switch ends pressure reduction is comparatively large, be easy to produce arc discharge and the impact to rear end connecting circuit.And arcing events more easily appears in direct-current high-voltage switch, and be difficult to accomplish higher switching voltage, the voltage of the DC switch of general relay form can only accomplish about 100V, and Costco Wholesale is higher.The present invention is mainly used among photovoltaic plant, and photovoltage is not higher, and electric current is also larger, 10A can be reached, general electronic device is comparatively large due to conducting internal resistance, under high pressure cannot bear larger by electric current, although relay conduction impedance is low, but arcing events is comparatively serious again, be easy under high pressure cause damage, therefore need a kind of reasonably switching device of design, both by larger current, can arcing events be avoided again, improve the reliability of switch.
summary of the inventionthe object of this invention is to provide a kind of direct-current high-voltage switch without arc discharge, to solve prior art Problems existing.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of direct-current high-voltage switch without arc discharge, it is characterized in that: comprise single-chip microcomputer, metal-oxide-semiconductor, the grid of metal-oxide-semiconductor, drain electrode and source electrode access the I/O port of single-chip microcomputer respectively by metal-oxide-semiconductor drive circuit, and the drain electrode of metal-oxide-semiconductor is connected with relay with the drive circuit of source electrode respectively by relay, when switch conduction order is transmitted in outside, single-chip microcomputer receives ON command by PORT COM, then control by the I/O port of single-chip microcomputer drain electrode and the source electrode saturation conduction that metal-oxide-semiconductor connected by metal-oxide-semiconductor drive circuit, then single-chip microcomputer time delay 2mS, drive circuit to relay transmits control signal and makes relay conducting when pole, two ends low voltage difference, and then close metal-oxide-semiconductor, after single-chip microcomputer receives ON-and OFF-command, control metal-oxide-semiconductor conducting, after a few mS of time delay guarantees conducting, turn off relay again, a few mS of time delay guarantees that controlling metal-oxide-semiconductor after relay disconnects disconnects again, thus the direct-current high-voltage switch achieved without arc discharge.
The present invention uses in parallel with low-voltage relay for power MOS pipe as switch.Utilize power MOS pipe as the effector of switching over action, because the shutoff of metal-oxide-semiconductor and conducting do not have mechanical devices, can ensure that the moment of switch is without arc discharge, after switch adhesive, be switched to low-voltage relay conducting immediately, because relay impedance is lower than metal-oxide-semiconductor, at this moment electric current is by relay, guarantees that metal-oxide-semiconductor can not damage by under electric current greatly.During disconnection, first disconnect relay, disconnect metal-oxide-semiconductor more at once, just ensure that switching process arcing events can not occur.
The invention has the beneficial effects as follows, use lower cost to achieve direct-current high-voltage switch, and improve the reliability of equipment, avoid the arcing events of switch.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
Shown in Figure 1, select withstand voltage more than 1000V, and can by the power MOS pipe of more than 10A electric current in 10mS.The respective drive circuit of design metal-oxide-semiconductor and relay, utilizes chip microcontroller function to control and external control interface.When switch conduction order is transmitted in outside, ON command can be received by the PORT COM of single-chip microcomputer, then hold saturation conduction by the DS of the I/O port control metal-oxide-semiconductor drive circuit connection metal-oxide-semiconductor of single-chip microcomputer.Then by single-chip microcomputer time delay 2mS, the drive circuit to relay send control signal to make relay conducting when pole, two ends low voltage difference, can not produce the electric discharge that mechanical part electric clearance causes, and then close metal-oxide-semiconductor.After single-chip microcomputer receives ON-and OFF-command, control metal-oxide-semiconductor conducting, after a few mS of time delay guarantees conducting, then turn off relay, more a few mS of time delay guarantees that controlling metal-oxide-semiconductor after relay disconnects disconnects.Thus the direct-current high-voltage switch achieved without arc discharge designs.
Applied environment of the present invention is in photovoltaic plant, and because photovoltaic group string two ends in the photovoltaic array in power station exist the high direct voltage close to 1000V, the electric current of group string is maximum to 10A.Due to will by photovoltaic group string or photovoltaic module short-and-medium from array time isolate, at a flash of switching over, switch ends voltage is close to 1000V.Design of the present invention has enough little conduction impedance when should meet switch conduction, arcing events does not occur when guaranteeing switch adhesive again and disconnect.
Claims (1)
1. the direct-current high-voltage switch without arc discharge, it is characterized in that: comprise single-chip microcomputer, metal-oxide-semiconductor, the grid of metal-oxide-semiconductor, drain electrode and source electrode access the I/O port of single-chip microcomputer respectively by metal-oxide-semiconductor drive circuit, and the drain electrode of metal-oxide-semiconductor is connected with relay with the drive circuit of source electrode respectively by relay, when switch conduction order is transmitted in outside, single-chip microcomputer receives ON command by PORT COM, then control by the I/O port of single-chip microcomputer drain electrode and the source electrode saturation conduction that metal-oxide-semiconductor connected by metal-oxide-semiconductor drive circuit, then single-chip microcomputer time delay 2mS, drive circuit to relay transmits control signal and makes relay conducting when pole, two ends low voltage difference, and then close metal-oxide-semiconductor, after single-chip microcomputer receives ON-and OFF-command, control metal-oxide-semiconductor conducting, after a few mS of time delay guarantees conducting, turn off relay again, a few mS of time delay guarantees that controlling metal-oxide-semiconductor after relay disconnects disconnects again, thus the direct-current high-voltage switch achieved without arc discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510334898.0A CN104952664A (en) | 2015-06-12 | 2015-06-12 | Direct current high-voltage switch without arc discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510334898.0A CN104952664A (en) | 2015-06-12 | 2015-06-12 | Direct current high-voltage switch without arc discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104952664A true CN104952664A (en) | 2015-09-30 |
Family
ID=54167246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510334898.0A Pending CN104952664A (en) | 2015-06-12 | 2015-06-12 | Direct current high-voltage switch without arc discharge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104952664A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305960A (en) * | 2015-12-02 | 2016-02-03 | 蚌埠电子信息产业技术研究院 | Photovoltaic system series-parallel mismatch loss ratio test device and test method thereof |
| CN112349545A (en) * | 2020-10-19 | 2021-02-09 | 北京动力源科技股份有限公司 | Direct current switch |
| CN113287894A (en) * | 2021-04-29 | 2021-08-24 | 上海惠上电子技术有限公司 | Multifunctional bed and multi-drive switch protection circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201549395U (en) * | 2009-09-16 | 2010-08-11 | 深圳市英赛威科技有限公司 | Mechanical electronic DC switch |
| CN102064047A (en) * | 2010-11-23 | 2011-05-18 | 国网电力科学研究院 | Relay and switching tube parallel circuit suitable for high-pressure direct current occasion |
| EP2562893A2 (en) * | 2011-08-25 | 2013-02-27 | Hamilton Sundstrand Corporation | Solid state power controller for high voltage direct current systems |
-
2015
- 2015-06-12 CN CN201510334898.0A patent/CN104952664A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201549395U (en) * | 2009-09-16 | 2010-08-11 | 深圳市英赛威科技有限公司 | Mechanical electronic DC switch |
| CN102064047A (en) * | 2010-11-23 | 2011-05-18 | 国网电力科学研究院 | Relay and switching tube parallel circuit suitable for high-pressure direct current occasion |
| EP2562893A2 (en) * | 2011-08-25 | 2013-02-27 | Hamilton Sundstrand Corporation | Solid state power controller for high voltage direct current systems |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305960A (en) * | 2015-12-02 | 2016-02-03 | 蚌埠电子信息产业技术研究院 | Photovoltaic system series-parallel mismatch loss ratio test device and test method thereof |
| CN105305960B (en) * | 2015-12-02 | 2018-08-03 | 蚌埠电子信息产业技术研究院 | A kind of the connection in series-parallel mismatch loss rate test device and its test method of photovoltaic system |
| CN112349545A (en) * | 2020-10-19 | 2021-02-09 | 北京动力源科技股份有限公司 | Direct current switch |
| CN112349545B (en) * | 2020-10-19 | 2023-01-31 | 北京动力源科技股份有限公司 | Direct current switch |
| CN113287894A (en) * | 2021-04-29 | 2021-08-24 | 上海惠上电子技术有限公司 | Multifunctional bed and multi-drive switch protection circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203933364U (en) | A kind of high-power drive circuit in parallel of multiple IGBT modules | |
| CN104952664A (en) | Direct current high-voltage switch without arc discharge | |
| CN103929104B (en) | Without the drive circuit of additional driving power | |
| CN103346761B (en) | Mechanical synchronization hybrid relay and hybrid switch operation method | |
| WO2017186028A1 (en) | Protection circuit and system of electronic contactor | |
| CN105576816A (en) | Switching circuit | |
| CN204168121U (en) | A kind of metal-oxide-semiconductor parallel pulse drive circuit | |
| CN203289394U (en) | A switch circuit and a communication power supply | |
| CN204668228U (en) | A kind of direct-current high-voltage switch without arc discharge | |
| CN203552988U (en) | High-voltage direct-current circuit breaker based on double switches | |
| CN201928186U (en) | Sliding frequency soft startup circuit applied to electromagnetic induction heating power supply | |
| CN201611773U (en) | Programmable main control isolation protection device | |
| CN205283507U (en) | Direct -current solid -state relay | |
| CN204258754U (en) | A kind of solid state relay with reverse isolation | |
| CN203788205U (en) | Drive circuit without added driving power supplies | |
| CN204244170U (en) | Photovoltaic combiner box and the anti-circnit NOT of photovoltaic conflux | |
| CN203933461U (en) | A kind of reversing arrangement | |
| CN203326972U (en) | Mechanical synchronous hybrid relay | |
| CN207968454U (en) | A kind of switching circuit and underwater equipment | |
| CN203800836U (en) | CS short circuit protection circuit for switch power supply | |
| CN202495749U (en) | Power source protection circuit | |
| CN208078885U (en) | A kind of high-voltage MOS pipe control circuit | |
| CN104993811B (en) | A kind of current foldback circuit of semiconductor switch | |
| CN207249405U (en) | A kind of two-way on-off circuit being applied in straight-flow system | |
| CN105743478B (en) | A kind of mutual exclusion switching circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190107 Address after: 233010 No. 726 Huaguang Avenue, Bengbu City, Anhui Province Applicant after: The 41st Institute of CETC Applicant after: National electric power group power station operation technology (Beijing) Co., Ltd. Address before: 233010 No. 726 Huaguang Avenue, Bengbu City, Anhui Province Applicant before: The 41st Institute of CETC Applicant before: CPI SCIENCE & TECHNOLOGY RESEARCH INSTITUTE CO., LTD. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150930 |