CN2888723Y - Seamless auto switching device for dual-electric source - Google Patents
Seamless auto switching device for dual-electric source Download PDFInfo
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- CN2888723Y CN2888723Y CN 200620080867 CN200620080867U CN2888723Y CN 2888723 Y CN2888723 Y CN 2888723Y CN 200620080867 CN200620080867 CN 200620080867 CN 200620080867 U CN200620080867 U CN 200620080867U CN 2888723 Y CN2888723 Y CN 2888723Y
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- inverter
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- static switch
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Abstract
The utility model relates to a double power resources automatic switching device, belonging to the power supply technology, which comprises a main and a reserve two-way ac inputs. The ac inputs get through the rectifier respectively and supplies the dc bus at the same time, wherein the buses are connected with the main and the reserve inverters. The main inverter output 220 V/50Hz exchanges after a static switch(1) and a manual switch successively. The output of the reserve inverter is divided into two paths again after a static switch(2), wherein one path inputs into the static switch(1), and the other controls the main inverter after the reserve inverter. The two-way ac input is divided into three paths through a two-way changeover device: one path controls the reserve inverter through the reserve inverter controller, one path inputs into the static switch(2), and the last inputs into the above manual switch. The device can realize seamless automatic switching, work reliably in case of ac power supply mutation, instant power failure, and rapid changes in the frequency phase, eliminate various faults and potential safety problems, and can be widely applied to various track circuits and other seamless automatic switching circuits.
Description
Technical field
The utility model belongs to power technique fields, more particularly relates to the design of the seamless automatic switching control equipment of duplicate supply.
Background technology
25HZ phase sensitivity track power supply is widely used in the station of electric railway and is interval.It is made up of track frequency divider drawn game portion frequency divider, exports 25HZ track power supply and 25HZ locally supplied power source respectively.Can detect by track circuit and to have or not train (vehicle takies) on the track, can send the whether complete letter trouble of about track whether idle and track, play a part information generator.Also play a part simultaneously by information transmission between the semaphore and between ground installation and the locomotive equipment and acceptance, transmission, communication.Thereby the track power supply is one of key foundation equipment of automatic control of railroad train operation realization and Long-distance Control.
Along with starting of the comprehensive speed-raising of train and a large amount of heavy haul trains, add improving constantly of the railway modernization level of informatization, the running environment of phase-sensitive track circuits becomes increasingly complex, and this just requires 25HZ phase sensitivity track power supply to want to resist various interference from the 50HZ power supply; Can operate as normal when situation generations such as 50HZ power supply sudden change (heavy haul train by), instantaneous power failure (switchings of two-way voltage), the quick variation of frequency plot.
The a large amount of 25HZ track power supply panels that use of electric railway at present, at instant cut-off or after changing the phase place of input ac power fast, original 25HZ resonance condition can be destroyed, and the moment failure of oscillation takes place.Occur track circuit red band fault thereupon, force the open signal error in station to be closed, cause the train of approach signal machine to be forced to take the measure of stopping in emergency, constitute serious potential safety hazard and passenger injury.Along with the speed-raising of train, braking distance prolongs, this phenomenon serious threat traffic safety.
Summary of the invention
The purpose of this utility model just is to overcome above-mentioned shortcoming and defect, provides a kind of duplicate supply seamless automatic switching control equipment.It can realize the seamless automatic switchover of duplicate supply, resists the various interference from the 50HZ power supply; When situations such as the sudden change of 50HZ power supply, instantaneous power failure (switching of two-way voltage), the quick variation of frequency plot take place, all can work normally, reliably, thereby eliminate various faults and potential safety hazard.
In order to achieve the above object, the utility model comprises that the main power source of 220V/50HZ exchanges input with the stand-by power supply two-way.Two-way exchanges input and supply with dc bus respectively simultaneously behind rectifier rectification, and dc bus inserts main inverter and standby inverter respectively.The output of main inverter is connected with static switch (), and the output of static switch () is through manually finally exporting the 220V/50HZ interchange behind the change over switch.The output of standby inverter is connected with static switch (two).The output of static switch (two) is divided into two-way, wherein one the tunnel imports static switch (), and another road is through main inverter controller control main inverter.Two-way exchanges input and also imports a two-way simultaneously and throw device mutually, and the output that this two-way is thrown device mutually is divided into three the tunnel: wherein one the tunnel control standby inverter through standby circuit control device, and another road input static switch (two), Third Road is also imported above-mentioned manual change-over switch.
Power supply architecture of the present utility model throws device mutually by two groups of rectifiers, inverter and control circuits thereof, two groups of static switches, two-way and a manual change-over switch is formed.
Two-way AC power rectification is respectively supplied with dc bus simultaneously.Wherein one tunnel power interruptions can not cause DC bus-bar voltage to disappear, and inverter output voltage is continuous when the two-way power supply switches like this, does not have the problem of instant cut-off.Fundamentally eradicated in the two-way AC power transfer process, produced instant cut-off (more than the 100ms) or phase change and cause the problem of the ferromagnetic frequency divider of 25HZ track power supply panel moment failure of oscillation.
Two cover inverters all can be born their common DC buses of whole loads, all adopt sinusoidal pulse width modulation technology and PHASE-LOCKED LOOP PLL TECHNIQUE, output voltage stabilizing, frequency stabilization.Standby inverter is followed the tracks of alternating current input power supplying.Its output is as the bypass supply of main inverter, and same alternating current input power supplying is in fact all followed the tracks of in such two cover inversions, so their on-line synchronous operations simultaneously.
When main inverter breaks down or manually closes, switch on standby inverter output automatically synchronously, when also breaking down or manually cut out, standby inverter switches on the input power supply automatically synchronously.At this moment, directly power by AC power just to 25HZ track power supply panel in user mode.Above-mentionedly switch to synchronous switching, output voltage is with homophase is uninterrupted frequently, and this has fundamentally eradicated in inverter and the bypass handoff procedure, causes the problem of the ferromagnetic frequency divider failure of oscillation of 25HZ track power supply panel owing to the voltage-phase flip-flop.
Two-way power supply automatic switching circuit (two-way is thrown device mutually) provides synchronous bypass supply for inverter.In addition, when two inverters fault or directly power for 25HZ track power supply panel automatically when manually closing all.
The emergency bypass switch can be manually switched to emergency bypass under the situation that inverter breaks down, so that maintenance.Import power supply and throw device mutually by two-way and directly power to 25HZ track power supply panel this moment.
Main inverter and standby inverter all can be born whole loads, and their common DC buses all adopt sinusoidal pulse width modulation technology and PHASE-LOCKED LOOP PLL TECHNIQUE.Because inverter adopts the SPWM technology, average voltage is regulated and advanced control technologys such as the transient voltage adjusting combines, and exports stable sine voltage, and distortion is minimum, and dynamic response is fast, and load is had stronger adaptive capacity.
Task of the present utility model comes to this and finishes.
The utility model can be realized the seamless automatic switchover of duplicate supply, resists the various interference from the 50HZ power supply; When situations such as the sudden change of 50HZ power supply, instantaneous power failure (switching of two-way voltage), the quick variation of frequency plot take place, all can work normally, reliably, thereby eliminate various faults and potential safety hazard.
The quality of the 220V/50HZ voltage of this device output is not subjected to the influence of two-way input ac power.Still synchronous continual output voltage stabilizing when switching of two-way power supply or fluctuation, the minimum 220V/50HZ sine voltage of the frequency stabilization distortion factor.Its allows input power supply that extremely wide scope range of the fluctuation of voltage is arranged, and (176V～253V) is in the railway electrical network that is particularly suitable for being applied to rise and fall very big.It has the complete protection function, when transshipping, short circuit, when output voltage is too high or too low, switching to bypass condition automatically synchronously, guarantees 25HZ track power supply panel operate as normal.
The utility model is used for the track power supply, can thoroughly solve 25HZ track power supply in two-way AC power transfer process, the instant cut-off of generation or phase change and cause the problem of the ferromagnetic frequency divider of 25HZ track circuit moment failure of oscillation.This device has accomplished that according to the demand of the intrinsic operating characteristic of the ferromagnetic frequency divider of 25HZ output voltage is uninterrupted synchronously when the two-way AC power is switched, and has eliminated track " red band " problem, thereby has guaranteed traffic safety.It can be widely used in the circuit of track circuit and the seamless automatic switchover of other various need.
Description of drawings
Fig. 1 is a functional-block diagram of the present utility model.
Fig. 2 is its circuit theory diagrams.
Fig. 3 is applied to the schematic diagram of track power supply for embodiment 2.
Embodiment
Embodiment 1.The seamless automatic switching control equipment of a kind of duplicate supply is as Fig. 1～shown in Figure 2.It comprises that the main power source (1) of 220V/50HZ exchanges input with stand-by power supply (2) two-way.Two-way exchanges input and supplies with dc bus (5) simultaneously respectively after rectifier (3) and (4) rectification.Dc bus (5) inserts main inverter (6) and standby inverter (7) respectively.The output of main inverter (6) is connected with static switch (), and the output of static switch () is through manually finally exporting 220V/50HZ interchange (8) behind the change over switch (9).The output of standby inverter (7) is connected with static switch (two).The output of static switch (two) is divided into two-way, wherein one the tunnel imports static switch (), and another road is through main inverter controller (10) control main inverter (6).Two-way interchange input (1) and (2) is also imported a two-way simultaneously and is thrown device (11) mutually, the output that this two-way is thrown device (11) mutually is divided into three the tunnel: wherein one the tunnel control standby inverter (7) through standby circuit control device (12), another road input static switch (two), Third Road is also imported above-mentioned manual change-over switch (9).
Main inverter (6) and standby inverter (7) all can be born whole loads, and their common DC buses (5) all adopt sinusoidal pulse width modulation technology and PHASE-LOCKED LOOP PLL TECHNIQUE.
Embodiment 2.The seamless automatic switching control equipment of a kind of duplicate supply, as shown in Figure 3.This is a kind of track power supply, and it has used the utility model.
Claims (2)
1. seamless automatic switching control equipment of duplicate supply, it is characterized in that it comprises that the main power source of 220V/50HZ exchanges input with the stand-by power supply two-way, two-way exchanges input and supply with dc bus respectively simultaneously behind rectifier rectification, dc bus inserts main inverter and standby inverter respectively, the output of main inverter is connected with static switch (), the output of static switch () is through manually finally exporting the 220V/50HZ interchange behind the change over switch, the output of standby inverter is connected with static switch (two), the output of static switch (two) is divided into two-way, wherein one the tunnel import static switch (), another road is through main inverter controller control main inverter, two-way interchange input is also imported a two-way simultaneously and is thrown device mutually, the output that this two-way is thrown device mutually is divided into three the tunnel, wherein one the tunnel control standby inverter through standby circuit control device, another road input static switch (two), Third Road is also imported above-mentioned manual change-over switch.
2. according to the seamless automatic switching control equipment of the described duplicate supply of claim 1, it is characterized in that said main inverter and standby inverter all can bear whole loads, their common DC buses all adopt sinusoidal pulse width modulation technology and PHASE-LOCKED LOOP PLL TECHNIQUE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620080867 CN2888723Y (en) | 2006-01-26 | 2006-01-26 | Seamless auto switching device for dual-electric source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620080867 CN2888723Y (en) | 2006-01-26 | 2006-01-26 | Seamless auto switching device for dual-electric source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2888723Y true CN2888723Y (en) | 2007-04-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620080867 Expired - Fee Related CN2888723Y (en) | 2006-01-26 | 2006-01-26 | Seamless auto switching device for dual-electric source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2888723Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624080A (en) * | 2012-03-21 | 2012-08-01 | 华中科技大学 | Dual-power automatic transfer switch device |
| CN101931267B (en) * | 2009-06-24 | 2013-01-23 | 北京动力源科技股份有限公司 | Control unit for realizing intelligent switching of alternating current input |
| CN101888112B (en) * | 2009-05-15 | 2013-01-30 | 加弘科技咨询(上海)有限公司 | Power system provided with stand-by power |
| CN106330087A (en) * | 2015-07-03 | 2017-01-11 | 硕天科技股份有限公司 | Solar power generation system with standby inverter |
| CN113013981A (en) * | 2021-02-26 | 2021-06-22 | 北京百度网讯科技有限公司 | Power distribution system |
-
2006
- 2006-01-26 CN CN 200620080867 patent/CN2888723Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888112B (en) * | 2009-05-15 | 2013-01-30 | 加弘科技咨询(上海)有限公司 | Power system provided with stand-by power |
| CN101931267B (en) * | 2009-06-24 | 2013-01-23 | 北京动力源科技股份有限公司 | Control unit for realizing intelligent switching of alternating current input |
| CN102624080A (en) * | 2012-03-21 | 2012-08-01 | 华中科技大学 | Dual-power automatic transfer switch device |
| CN102624080B (en) * | 2012-03-21 | 2014-07-23 | 华中科技大学 | Dual-power automatic transfer switch device |
| CN106330087A (en) * | 2015-07-03 | 2017-01-11 | 硕天科技股份有限公司 | Solar power generation system with standby inverter |
| CN106330087B (en) * | 2015-07-03 | 2018-06-05 | 硕天科技股份有限公司 | Solar power generation system with standby inverter |
| CN113013981A (en) * | 2021-02-26 | 2021-06-22 | 北京百度网讯科技有限公司 | Power distribution system |
| CN113013981B (en) * | 2021-02-26 | 2022-08-02 | 北京百度网讯科技有限公司 | Power distribution system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070411 |