CN202817890U - Alternating-current double-power supply static electronic switching device - Google Patents
Alternating-current double-power supply static electronic switching device Download PDFInfo
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- CN202817890U CN202817890U CN 201220481915 CN201220481915U CN202817890U CN 202817890 U CN202817890 U CN 202817890U CN 201220481915 CN201220481915 CN 201220481915 CN 201220481915 U CN201220481915 U CN 201220481915U CN 202817890 U CN202817890 U CN 202817890U
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Abstract
The utility model relates to the technical field of power system, and particularly relates to an alternating-current double-power supply static electronic switching device. The switching unit comprises two groups of SCR switching circuits; each group of SCR switching circuit is correspondingly connected with the L line of one power supply; each group of SCR switching circuit comprises two parallel SCR units; the other ends of the two groups of SCR switching circuits are connected to serve as the L line of the system output; and the control unit is provided with a quick power-down detection unit, a control circuit, a voltage detection circuit, a protection circuit and a communication unit. According to the alternating-current double-power supply static electronic switching device, quick switching between the two power supplies can be realized; the electricity load can be ensured to be provided with power uninterruptedly; personal safety danger and economic loss caused by power off of the electricity load due to excessive long time of switching are avoided; and the complete voltage detection function and static electronic switching can greatly improve reliability of power supply by the electricity load.
Description
Technical field
The utility model relates to technical field of power systems, specifically relates to the static electronic switching device of a kind of interchange duplicate supply.
Background technology
In recent years, along with the rapid growth of China's industrial level, the demand of industry-by-industry is the transformation from " product " to " elaboration ", and the demand of power supply aspect obtains too and should demonstrate,prove.Each modern office building, large scale business and service trade place, subway, tunnel large-scale stadium and hospital require their illuminator, elevator, water pump to comprise that the key equipment such as supervisory control system still can normally move behind the emergency episode having a power failure or occur because of the primary power cource fault code one after another.For this reason, adopt two-way Power supply mode, to reach the stability that improves power supply.
Traditional interchange double-power supply switching device is to adopt the mechanical type switching modes such as relay or contactor, and there is following shortcoming in so mechanical switching mode:
1, switching time long, can't guarantee the power load uninterrupted power supply.
2, dirt exclusion capabilities is poor, and failure rate is high.
3, voltage detecting imperfection can't be realized the switching power supply in all electric voltage exception situations.
The utility model content
For the technical problem that exists in the prior art, the utility model provides a kind of interchange duplicate supply static electronic switching device,, guarantees in the handoff procedure power load uninterrupted power supply to satisfy the power switching in any electric voltage exception situation.
To achieve these goals, the technical scheme of employing is as follows:
Exchange the static electronic switching device of duplicate supply, it is characterized in that having switch unit and control unit,
Switch unit is comprised of two groups of controllable silicon commutation circuits, every group of corresponding L line that connects one road power supply of controllable silicon commutation circuit, and every group of controllable silicon commutation circuit comprises the controllable silicon unit of two parallel connections;
The other end of two groups of controllable silicon commutation circuits links to each other as the L line of system's output;
Control unit is provided with quick detection of power loss unit, control circuit, voltage detecting circuit, protective circuit and communication unit.
The utility model exchanges the static electronic switching device of duplicate supply, can realize the duplex feeding quick power switching, guarantees the power load uninterrupted power supply, personal safety and the economic loss of avoiding power load to cut off the power supply because switching time is long and cause; Simultaneously, perfect voltage detecting function and static electronics switch and can greatly improve the power load power supply reliability.
Description of drawings
For the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the circuit theory diagrams that the utility model exchanges the static electronic switching device of duplicate supply.
Embodiment
See also Fig. 1, exchange the static electronic switching device of duplicate supply, have switch unit and control unit.
Switch unit is the power section of device, power semiconductor is selected the High Performance Thyristor of IXYS company, the L line of two-way interchange input respectively correspondence is connected to one group of controllable silicon, every group of controllable silicon comprises two controllable silicon unit, be that power supply 1 tunnel is connected to first group of controllable silicon (SCR1), power supply 2 tunnel is connected to second group of controllable silicon (SCR2), and every group of controllable silicon commutation circuit comprises the controllable silicon unit of two parallel connections.
The other end of two groups of controllable silicon commutation circuits links to each other as the L line of system's output, and system adopts totally zero design.
Control unit is provided with quick detection of power loss unit, control circuit, voltage detecting circuit, protective circuit and communication unit.Control unit is responsible for detection, control and the troubleshooting etc. of whole device, device adopts to have no progeny first cuts control model, two-way is exchanged input to control unit and output voltage has accurately detection, if input voltage occurs unusual, its quick power-fail detection circuit can detect about 2ms, then makes corresponding control.
Concrete switching controls is: when the main electricity of input (power supply 1) voltage abnormal, control unit is turned off first the driving of 1 tunnel Group of Silicon Controlled Rectifier, then open the driving of 2 tunnel Group of Silicon Controlled Rectifier, device can automatically switch to stand-by power supply (power supply 2) power supply, whole power down handoff procedure guarantees the power load uninterrupted power supply within 4ms; Recover normal if input main piezoelectric voltage, device can automatic switchback to main electricity power supply, whole recovery guarantees the power load uninterrupted power supply switching time equally within 2ms.
Consider the diversity that exchanges duplicate supply static switching device application scenario, device can also arrange the priority of power supply online, namely manually selects the I road or the II road preferentially powers.Control unit realizes preferentially powering selection function by the collection of an I mouth signal.
Control unit selects the TMS320LF2406 of TI company as the control system of device, except can realizing quick detection of power loss and handoff functionality, also has perfect protection and troubleshooting function.By the detection to output current, device can be realized overload and output short circuit protection; By the temperature detection to switch unit internal power device, device can be realized overheat protector.Device can also realize that carrying out communication with the backstage connects, and the information of whole device in time is uploaded to host computer, is easy to unattended operation.
Above content only is to the utility model structure example and explanation; under those skilled in the art described specific embodiment is made various modifications or replenish or adopt similar mode to substitute; only otherwise depart from the structure of utility model or do not surmount this scope as defined in the claims, all should belong to protection range of the present utility model.
Claims (1)
1. exchange the static electronic switching device of duplicate supply, it is characterized in that having switch unit and control unit,
Switch unit is comprised of two groups of controllable silicon commutation circuits, every group of corresponding L line that connects one road power supply of controllable silicon commutation circuit, and every group of controllable silicon commutation circuit comprises the controllable silicon unit of two parallel connections;
The other end of two groups of controllable silicon commutation circuits links to each other as the L line of system's output;
Control unit is provided with quick detection of power loss unit, control circuit, voltage detecting circuit, protective circuit and communication unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220481915 CN202817890U (en) | 2012-09-20 | 2012-09-20 | Alternating-current double-power supply static electronic switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220481915 CN202817890U (en) | 2012-09-20 | 2012-09-20 | Alternating-current double-power supply static electronic switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202817890U true CN202817890U (en) | 2013-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220481915 Expired - Fee Related CN202817890U (en) | 2012-09-20 | 2012-09-20 | Alternating-current double-power supply static electronic switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202817890U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242439A (en) * | 2014-08-30 | 2014-12-24 | 沈亚斌 | AC/DC delay-free switching method and system |
| CN105553081A (en) * | 2016-03-02 | 2016-05-04 | 宁夏凯晨电气集团有限公司 | Dual-power-supply rapid switching method and apparatus through silicon controlled rectifier |
| CN109546739A (en) * | 2017-09-21 | 2019-03-29 | 航天科工惯性技术有限公司 | Dual-power switching system and with its with bore gyroscopic survey device |
| CN110445247A (en) * | 2019-08-16 | 2019-11-12 | 深圳市智微智能软件开发有限公司 | High reliability redundancy electric power supply system and method |
-
2012
- 2012-09-20 CN CN 201220481915 patent/CN202817890U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242439A (en) * | 2014-08-30 | 2014-12-24 | 沈亚斌 | AC/DC delay-free switching method and system |
| CN104242439B (en) * | 2014-08-30 | 2016-07-06 | 沈亚斌 | A kind of alternating current-direct current is without delay switching method and switched system |
| CN105553081A (en) * | 2016-03-02 | 2016-05-04 | 宁夏凯晨电气集团有限公司 | Dual-power-supply rapid switching method and apparatus through silicon controlled rectifier |
| CN105553081B (en) * | 2016-03-02 | 2018-04-10 | 宁夏凯晨电气集团有限公司 | Controllable silicon dual power supply fast switch over method and device |
| CN109546739A (en) * | 2017-09-21 | 2019-03-29 | 航天科工惯性技术有限公司 | Dual-power switching system and with its with bore gyroscopic survey device |
| CN109546739B (en) * | 2017-09-21 | 2022-03-22 | 航天科工惯性技术有限公司 | Dual-power switching system and gyro inclinometer device while drilling with same |
| CN110445247A (en) * | 2019-08-16 | 2019-11-12 | 深圳市智微智能软件开发有限公司 | High reliability redundancy electric power supply system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20170920 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |