CN202872457U - Mechanical-electronic mixing type dual-supply automatic change-over switch - Google Patents
Mechanical-electronic mixing type dual-supply automatic change-over switch Download PDFInfo
- Publication number
- CN202872457U CN202872457U CN 201220505017 CN201220505017U CN202872457U CN 202872457 U CN202872457 U CN 202872457U CN 201220505017 CN201220505017 CN 201220505017 CN 201220505017 U CN201220505017 U CN 201220505017U CN 202872457 U CN202872457 U CN 202872457U
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- power supply
- contactor
- transfer switch
- mechanical
- thyristor
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Abstract
Disclosed in the utility model is a mechanical-electronic mixing type dual-supply automatic change-over switch that comprises a traditional mechanical dual-supply change-over switch formed by two alternating current contactors with the same specification and a mechanical interlocking mechanism, 2 to 12 bidirectional thyristors as well as an electronic type dual-supply change-over switch formed by protecting and driving units. The control signal for sequential successive motions of the alternating current contactors and the bidirectional thyristors of the mechanical dual-supply change-over switch is from an MCU logic unit, wherein the MCU logic unit is composed of a power supply unit, a voltage frequency sampling unit, an electric interlocking unit and an alarm and display unit. According to the utility model, a technical problem that low cost, high short-circuit withstanding current performance and fast power supply conversion speed can not be realized simultaneously according to the traditional dual-supply automatic change-over switch can be solved.
Description
Technical field
The utility model relates to a kind of mechanical/electrical minor hybrid switch.
Background technology
Known double power supply automatic transfer switch has Purely mechanical and pure electronic type at present.The mechanical type automatic change-over has low, the anti-short circuit current performance height of cost, does not need the special advantages such as cooling provision; Its shortcoming is that conversion speed is slow, and outage automatically causes the power-off time greater than 50 milliseconds during conversion the soonest, the fastest 25 milliseconds power-off time when returning automatic conversion.Pure electronic type automatic change-over has the fast advantage of contactless, Arc-free advantage, especially conversion speed, and its power-off time can be less than 5 milliseconds; Its shortcoming is that cost is high, and anti-short circuit current performance is low.
Summary of the invention
The purpose of this utility model provides the hybrid double power supply automatic transfer switch of a kind of mechano-electronic, the aspects such as cost, anti-short circuit current performance and power supply conversion speed that exist to solve traditional double power supply automatic transfer switch, the technical problem that can not have both.
To achieve these goals, the technical scheme that adopts of the present utility model is as follows:
The hybrid double power supply automatic transfer switch of mechano-electronic, it comprises the traditional mechanical double transfer switch that is comprised of the A.C. contactor of two same sizes and mechanical interlocking mechanism, and the electronic double transfer switch of 2 to 12 bidirectional thyristors (quantity depends on number of electrodes and current class) and protection and driver element composition; The control signal that the A.C. contactor of described mechanical double transfer switch and the order of described bidirectional thyristor are moved successively comes from the MCU logical block, and the MCU logical block comprises power unit, electric voltage frequency sampling section, electrical interlocks part, warning and display part; The A1 of bidirectional thyristor and A2 electrode are in parallel with the main contact of A.C. contactor, and each phase main contact of A.C. contactor is all according to load needs one group of thyristor in parallel.
The hybrid double power supply automatic transfer switch of described mechano-electronic, input power are double loop power supply, and they are power supplys independently separately, and the power supply source is generating set, transformer, UPS, inverter, and allows the phase difference of any electrical degree.
The hybrid double power supply automatic transfer switch of described mechano-electronic, during steady operation, thyristor does not carry not break-make load yet, only at transition period thyristor break-make load.
The hybrid double power supply automatic transfer switch of described mechano-electronic, the A1 of bidirectional thyristor and A2 electrode are behind the series connection fuse, and be in parallel with the main contact of A.C. contactor.
Advantage of the present utility model and good effect are to cooperate with the ingenious of A.C. contactor by thyristor, high-performance and the low advantage of cost of the anti-short circuit current of mechanical switch had both been inherited, brought into play again the fast characteristic of electronic commutator conversion speed, reach outage automatically during conversion less than 20 milliseconds power-off time, 5 milliseconds power-off time when returning automatic conversion.The hybrid double power supply automatic transfer switch of mechano-electronic of the present utility model has satisfied the characteristics that conversion speed is fast, stable, short-circuit capacity is strong fully through actual measurement, with existing automatic change-over to such as table 1.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Number among the figure: 1.-input power 1,2.-A.C. contactor 1,3.-load, 4.-A.C. contactor 2,5.-input power 2,6.-thyristor 1,7.-thyristor 2,8.-mechanical interlocking.
Embodiment
It comprises traditional mechanical double transfer switch that A.C. contactor and mechanical interlocking mechanism by two same sizes form the hybrid double power supply automatic transfer switch of mechano-electronic described in the utility model, and the electronic double transfer switch that forms of 2 to 12 bidirectional thyristors (quantity depends on number of electrodes and current class) and protection thereof and driver element.A.C. contactor and thyristor move successively according to design sequence under the coordination of MCU logical block, finish reliable high-speed transitions.The MCU logical block has also comprised power unit, electric voltage frequency sampling section, electrical interlocks part, warning and display part.During steady operation, the operating current of load provides by A.C. contactor wherein, and this A.C. contactor has been born overcurrent and Short-circuit Working Condition.In the transition period, the MCU logical block in turn triggers and turn-offs control according to the on off operating mode of A.C. contactor auxiliary contact to thyristor, to realize power supply conversion at a high speed, then enters the next steady operation phase.The A1 of bidirectional thyristor and A2 electrode are (fuse of perhaps connecting are further protected) in parallel with the main contact of A.C. contactor, and each phase main contact of A.C. contactor is all according to load needs one group of thyristor in parallel.Input power is double loop power supply, and they can be power supplys independently separately, and the power supply source can be generating set, transformer, UPS, inverter etc., and allows the phase difference of any electrical degree.During steady operation, thyristor does not carry not break-make load yet, only at transition period thyristor break-make load.Thyristor must cooperate to prevent that false triggering from causing the input power short circuit with protective circuit and reliable drive circuit and control logic.
The specific works principle is referring to Fig. 1, input power 1 1., 5. input power 2 send into the MCU logical block and judge behind voltage and frequency sampling circuit, according to default auto transformation mode, an A.C. contactor in the MCU control chart 1 (for example A.C. contactor 1 2.) closure makes load 3. obtain the qualified power supply (for example input power 1 1.) of being accepted by MCU.When 1. input power 1 one of the situation about can not be accepted by MCU such as breaks down, 2. MCU control A.C. contactor 1 disconnects, simultaneously 2. disconnect feedback signal according to A.C. contactor 1, by the 7. conducting of MCU control thyristor, 4. A.C. contactor 2 accepts close command simultaneously, until A.C. contactor 2 4. the closed feedback signal send to MCU, MCU then makes thyristor 7. turn-off.4. 5. load this moment power supply 3. provided through A.C. contactor 2 by input power 2.So far finish once by the automatic conversion of power supply commonly used to stand-by power supply.After 1. input power 1 recovers, through the default time-delay of returning, 4. MCU control A.C. contactor 2 disconnects, simultaneously 4. disconnect feedback signal according to A.C. contactor 2, by the 6. conducting of MCU control thyristor, 2. A.C. contactor 1 accepts close command simultaneously, until A.C. contactor 1 2. the closed feedback signal send to MCU, MCU then makes thyristor 6. turn-off.2. 1. load this moment power supply 3. provided through A.C. contactor 1 by input power 1.So far finish once by the conversion of returning of stand-by power supply to power supply commonly used.
Table 1:
Claims (4)
1. the hybrid double power supply automatic transfer switch of mechano-electronic, it is characterized in that, it comprises the traditional mechanical double transfer switch that is comprised of the A.C. contactor of two same sizes and mechanical interlocking mechanism, and the electronic double transfer switch that forms of 2 to 12 bidirectional thyristors and protection thereof and driver element; The control signal that the A.C. contactor of described mechanical double transfer switch and the order of described bidirectional thyristor are moved successively comes from the MCU logical block, and the MCU logical block comprises power unit, electric voltage frequency sampling section, electrical interlocks part, warning and display part; The A1 of bidirectional thyristor and A2 electrode are in parallel with the main contact of A.C. contactor, and each phase main contact of A.C. contactor is all according to load needs one group of thyristor in parallel.
2. the hybrid double power supply automatic transfer switch of described mechano-electronic according to claim 1, it is characterized in that input power is double loop power supply, they are power supplys independently separately, the power supply source is generating set, transformer, UPS, inverter, and allows the phase difference of any electrical degree.
3. the hybrid double power supply automatic transfer switch of described mechano-electronic according to claim 1 is characterized in that, during steady operation, thyristor does not carry not break-make load yet, only at transition period thyristor break-make load.
4. the hybrid double power supply automatic transfer switch of described mechano-electronic according to claim 1 is characterized in that, the A1 of bidirectional thyristor and A2 electrode are behind the series connection fuse, and be in parallel with the main contact of A.C. contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220505017 CN202872457U (en) | 2012-09-28 | 2012-09-28 | Mechanical-electronic mixing type dual-supply automatic change-over switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220505017 CN202872457U (en) | 2012-09-28 | 2012-09-28 | Mechanical-electronic mixing type dual-supply automatic change-over switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202872457U true CN202872457U (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220505017 Expired - Fee Related CN202872457U (en) | 2012-09-28 | 2012-09-28 | Mechanical-electronic mixing type dual-supply automatic change-over switch |
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| CN (1) | CN202872457U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842958A (en) * | 2012-09-28 | 2012-12-26 | 任佶 | Mechanical-electronic hybrid double-power-supply automatic change-over switch |
| CN109164337A (en) * | 2018-06-22 | 2019-01-08 | 国电南瑞科技股份有限公司 | A kind of anti-error control method of power equipment single-board testing power input |
-
2012
- 2012-09-28 CN CN 201220505017 patent/CN202872457U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842958A (en) * | 2012-09-28 | 2012-12-26 | 任佶 | Mechanical-electronic hybrid double-power-supply automatic change-over switch |
| CN109164337A (en) * | 2018-06-22 | 2019-01-08 | 国电南瑞科技股份有限公司 | A kind of anti-error control method of power equipment single-board testing power input |
| CN109164337B (en) * | 2018-06-22 | 2020-12-01 | 国电南瑞科技股份有限公司 | Power equipment single board test power input anti-error control 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: 20130410 Termination date: 20160928 |
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| CF01 | Termination of patent right due to non-payment of annual fee |