CN1592031A - Uninterruption power source module parallel system and by-pass switching method thereof - Google Patents
Uninterruption power source module parallel system and by-pass switching method thereof Download PDFInfo
- Publication number
- CN1592031A CN1592031A CN 03155441 CN03155441A CN1592031A CN 1592031 A CN1592031 A CN 1592031A CN 03155441 CN03155441 CN 03155441 CN 03155441 A CN03155441 A CN 03155441A CN 1592031 A CN1592031 A CN 1592031A
- Authority
- CN
- China
- Prior art keywords
- power module
- uninterruptible power
- bypass
- virtual controlling
- parallel
- 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
Images
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
This invention relates to discontinued supply module parallel system and its bypass switch method which makes the discontinued supply modules to have independent virtual control center competition functions separately in the parallel system and generates a virtual control center when the parallel system faults or over loads, the virtual control center collects information of other discontinued power supply modules by a high speed communication line to make judgment if the common used modules should execute to the bypass or returns back from the bypass and sends coherent execution order by the high speed communication line, besides, the synchronous clock signal using the lower priority to synchronize the discontinued modules.
Description
Technical field
The present invention relates to a kind of Uninterruptible Power Module parallel system and bypass changing method thereof, refer to a kind of high reliability of guaranteeing electric especially, but and protection system to satisfy control method and the device of load to power supply output high requirement.
Background technology
Along with economy and the reach of science, people are more and more higher to the reliability of electric supply.Especially in the relatively advanced epoch of current economic information, various digital devices such as electronic computer in case outage all may cause a large amount of data to run off, cause serious economy loss.
In view of this, no-break power unit promptly arises at the historic moment, and no-break power unit (UPS, Uninterruptible Power Supply) can be divided into two kinds of online (On Line) and off-line types (OffLine).Wherein:
The off-line type no-break power unit at civil power just often, directly uses civil power as output, in case after the civil power outage, no-break power unit changes into from battery acquisition energy and exporting via inverter then.The advantage of this no-break power unit is simple in structure, and shortcoming is under city's power mode, as output, does not have the effect of steady voltage source with line voltage, and civil power and battery mode are longer switching time.
Online no-break power unit, under civil power and battery mode, output voltage all is to obtain by inverter (inverter) work, by this, Uninterruptible Power Module can provide stable voltage all the time, and civil power is zero switching time with battery.Because online no-break power unit can provide better and more reliable power supply,, be ready to select for use online no-break power unit so more and more power supply is exported has desired user.
The framework of online no-break power unit generally is made of several parts such as AC/DC change-over circuit, DC/DC change-over circuit, DC/AC frequency changer circuit, by-pass line and chargers.At civil power just often, no-break power unit at first transfers AC power supplies to DC through the AC/DC change-over circuit, and then DC is converted to AC output by inverter, when if no-break power unit breaks down or situation such as overload, no-break power unit will forward by-pass line to and carry out bypass output, so can be not cutting off the power supply of user load higher assurance is provided.When civil power does not exist; no-break power unit will forward battery mode at once to; no-break power unit is by the DC/DC change-over circuit; lower cell voltage is converted to high voltage; and then transfer the DC power supply to AC output through inverter, and load is provided the protective effect of uninterrupted power supply.No-break power unit also has other effect to the input power supply in addition, for example, absorbs the thunderbolt high voltage on the electrical network, reaches the purpose of protection load.
Have the characteristics of power protection just because of no-break power unit, make that the employed field of no-break power unit is more and more wider, the capacity and the reliability of no-break power unit all had higher requirement, but also comprised the property planned, flexibility etc.
In order to satisfy user's requirement, the pattern of no-break power unit running in parallel also just thereby produce.No-break power unit in parallel is compared with unit, and higher reliability is arranged, when wherein one break down, other no-break power unit can also work on, and parallel uninterrupted power-supply device generally can both be realized online hot maintenance.Increase power system capacity if desired, only need parallel uninterrupted again power-supply device in system as required, promptly help the user and carry out systems organization and adjustment.
The no-break power unit of unit operation can change bypass mode over to when transshipping or breaking down, to guarantee the reliability of electric.In parallel system, if overload or part no-break power unit fault take place, also need ask parallel system to enter the bypass mode running, but since inverter can't with the civil power parallel running (generally speaking, the parallel connection of blink is allowed to less than several ms), so require in the parallel system, no-break power unit all will enter bypass mode simultaneously, perhaps simultaneously rotates back into the inverter mode of operation by bypass mode.
Because the existence of interference or noise, the part no-break power unit in the system may be misrouted bypass, when perhaps needing to change bypass, does not but change bypass, thereby causes the parallel connection of inverter and civil power, may cause the collapse of parallel system at last but in fact.Therefore, need a more satisfactory solution, improving the reliability that the no-break power unit parallel system is changeed bypass simultaneously or returned by bypass, and should be more economical.
In the U.S. the 6th, 292,379B1 patent of invention case has been mentioned a kind of method that bypass is changeed in realization simultaneously in the Uninterruptible Power Module parallel system.Mentioned the uninterruptible power system of a parallel connection in this patent case, in this system, each Uninterruptible Power Module all is made of inverter (Inverter), by-pass line (Bypass circuit) and controller (Controller).Link to each other with a logic control line between each system and by a high-speed communication line.When having a module to cut bypass in the system, promptly obtain the control of synchronous signal line (sync line) earlier by this module, become one " bypass requestor (requester) ", prepare to change bypass by this module by other module in the high-speed communication line reporting system then, this bypass requestor (requester) then sends one and switches (toggle) signal on synchronous signal line, produce highest priority interrupt after other Uninterruptible Power Module in the system receives this switching signal, change the action of bypass simultaneously to finish all modules.
Though this patent case is understood parallel system and is realized the feasibility of changeing bypass simultaneously, make the Uninterruptible Power Module parallel system also have the overload of unit or the performance that fault is changeed bypass, remove the reliability that has improved parallel uninterrupted power module output, the technical foundation that also provides a parallel system incision bypass or bypass to return.
But consider practical application, the technology that this patent case discloses still has following some deficiency:
1. sending switching signal on a synchronous holding wire is subject to disturb to finish synchronization action: this kind method poor anti jamming capability, noise are easy to cause the Uninterruptible Power Module generation misoperation in the system.As disturbed, promptly may cause the Uninterruptible Power Module in the system to be operated in different mode, cause the civil power consequence in parallel with frequency conversion.
2. resources untilization lacks efficient: such as this kind work of changeing bypass, occurrence frequency seldom but in the system during switching signal of module on the respective synchronization holding wire, but uses the interruption of TP top priority, and the utilization of cpu resource has been caused serious waste.In addition, synchronous signal line also relatively waste on hardware.
3. all modules are all changeed bypass and are not suitable for applying to exporting demanding load in the system: when a module in the system breaks down, cause all modules of whole system all to change bypass, this is for concerning exporting exigent load, to obviously very unfavorable in its running.For example, the parallel connection of 3 3000VA Uninterruptible Power Module, the load of supply is 1000VA, if this moment is wherein after Uninterruptible Power Module fault, according to the method for this patent case, 3 Uninterruptible Power Module will change the bypass operation over to simultaneously, as noted earlier, if load is very high to power supply output requirement, and commercial power condition is relatively poor relatively again, the perhaps this moment of civil power outage suddenly all will produce adverse influence to the work of load.And have more and more equipments that power supply is all had very high requirement at present, therefore for the reliability requirement of parallel system, obviously should be operated under the inverter pattern with maximum capacity, to improve the stability and the reliability of output voltage, just guarantee the last resort that load is uninterruptedly taked as Uninterruptible Power Module as for changeing bypass.
4. possible relay electric arc infringement: when unit changes bypass, generally require output relay when the output voltage waveforms zero crossing, to switch, with the infringement that prevents that electric arc from producing relay, if relay suffers damage, will cause relay uncontrolled and be in normally closed or normally open.In parallel system, suffer damage as relay, will directly can cause the civil power of Uninterruptible Power Module and the situation of frequency conversion parallel connection to take place.Therefore in parallel system, need more to guarantee that relay switched at zero point, to reach the purpose of protection relay.
From the above, when this patent method that case is mentioned is changeed bypass in parallel connection, be the reasonability of reliability, the utilization of resources, commentaries on classics bypass or all there are weak point in the aspects such as protection of relay, thus further improvement, in the hope of more effective solution.
Summary of the invention
Therefore, main purpose of the present invention is to provide a kind of Uninterruptible Power Module parallel system and bypass changing method and device, this method and apparatus can effectively be managed the process that parallel system is changeed bypass, and whether parallel system is needed to change bypass or the control of judging is returned in bypass;
Simultaneously, this method and apparatus can make the module that needs in the parallel system to change bypass change bypass over to, and do not need to make other module all to change bypass over to, to guarantee reliability to electric, this method and apparatus is owing to not using highest ranking to interrupt, so can make the resources untilization of treatment mechanism have more efficient.
For reaching purpose of the present invention, the major technique means of taking are to make each Uninterruptible Power Module in this system have identical calculation process mechanism and virtual controlling center (VCC-Virtual Control Center) has competition functionality, and each Uninterruptible Power Module interconnects by an order wire and a synchronizing clock signals line at a high speed;
Each Uninterruptible Power Module is by the order wire of high speed in this system, and competition produces a Uninterruptible Power Module as virtual control centre, and other Uninterruptible Power Module sends information own to the virtual controlling center then by order wire at a high speed; This virtual controlling center is made control and is judged by the information that is received is handled, and via the high-speed communication line other Uninterruptible Power Module in the system is sent the control command that whether changes bypass over to;
Virtual controlling center in this system is former thereby disappear (as shutdown etc.) because of some, and other Uninterruptible Power Module will produce a new virtual controlling center automatically again.
This virtual controlling center is to being connected in the synchronizing clock signals line (SCL between each Uninterruptible Power Module, Syn-Clock-Line) have control, and send synchronizing clock signals by the synchronizing clock signals line, this synchronizing clock signals and virtual controlling center output voltage have same frequency and same phase, and the rising edge of synchronizing clock signals is corresponding with the zero crossing of output with trailing edge.(SCL Syn-Clock-Line) supplies parallel system to make the synchronous usefulness of output voltage of each Uninterruptible Power Module to this synchronizing clock signals line, is the original holding wire of parallel system.And the U.S. the 6th, 292,379B1 patent of invention case is to utilize the extra synchronous signal line (sync line) that increases to switch, and specializes in system synchronization to switch Bypass Control usefulness, thereby has increased the chance that system is disturbed.And the difference of the present invention and United States Patent (USP) case is, the present invention uses the original synchronizing clock signals line of parallel system to switch, and then not existing increases the problem of disturbing.
Each Uninterruptible Power Module interrupts at the trailing edge/rising edge generation trailing edge/rising edge of synchronizing clock signals in apparatus of the present invention, finishes the synchronous change action of each Uninterruptible Power Module in the system immediately.
Each Uninterruptible Power Module in apparatus of the present invention includes respectively: an AC/DC rectifier, a DC/DC transducer, a charger, a by-pass line road and an inverter (Inverter) etc.
This by-pass line adopts the output relay switch of two-stage, and the bypass capability of the whole apparatus system single module bypass capability sum that is all, with the intelligent management of realization Uninterruptible Power Module parallel connection, and can reduce influencing each other between the Uninterruptible Power Module.
Description of drawings
Fig. 1 parallel system configuration diagram of the present invention.
The circuit block diagram of each Uninterruptible Power Module in Fig. 2 parallel system of the present invention.
When Fig. 3 parallel connection of the present invention is changeed bypass simultaneously, the workflow diagram at virtual controlling center.
When give an order in Fig. 4 virtual controlling of the present invention center, its output waveform and and synchronizing clock signals between graph of a relation.
When Fig. 5 parallel connection of the present invention is changeed bypass simultaneously, the workflow diagram of the Uninterruptible Power Module at non-virtual controlling center.
When Fig. 6 parallel connection of the present invention is returned by bypass, the workflow diagram at virtual controlling center.
When Fig. 7 parallel connection of the present invention is returned by bypass, the workflow diagram of the Uninterruptible Power Module at non-virtual controlling center.
The synchronizing clock signals trailing edge at Fig. 8 virtual controlling of the present invention center interrupts flow chart.
Symbol description among the figure:
10,101～10n Uninterruptible Power Module
11 AC/DC rectifiers, 12 dc energy depots
13 DC/AC inverters, 14 DC/DC transducers
15 chargers, 16 power subsystems
17 controllers, 18 by-pass line
20 manual bypass switches, 181 first order relays
182 second level relays
Embodiment
As shown in Figure 1, announcement has one by the Uninterruptible Power Module parallel system, this system is by the Uninterruptible Power Module 10 of particular group number not, 101～10n does parallel running, each Uninterruptible Power Module 10 wherein, the input of 101～10n interconnects, input (Main-Power) with construction system, each Uninterruptible Power Module 10,101～10n output also interconnects the output (Output) with construction system, be provided with a bypass (Bypass) between this input and the output, a manual bypass switch 20 (Manual-Bypass-Switch) is arranged in this bypass, this manual bypass switch 20 acts on mainly that whole parallel system is installed and uses when adjusting test-run a machine, and its capacity generally is a heap(ed) capacity of selecting parallel system.And in the ordinary course of things, this manual bypass switch 20 is open-circuit condition.
Please cooperate again and consult shown in Figure 2ly, each Uninterruptible Power Module 10 in this apparatus system includes respectively:
One AC/DC rectifier 11, its input connects the output of input filter, and alternating current input power supplying is converted to direct current;
One dc energy depots (DC bus bank) 12 is positioned on the output of AC/DC rectifier 11;
One DC/AC inverter (inverter) 13, its input is connected with these AC/DC rectifier 11 outputs and dc energy depots 12;
One DC/DC transducer 14, its input connect the DC power supply input, and output then connects dc energy depots 12;
One charger 15;
One power subsystem 16, the working power of supply Uninterruptible Power Module 10;
One controller 17, The built-in has virtual controlling center (VCC) competition functionality, and be connected with DC/AC inverter 13, AC/DC rectifier 11 and DC/DC transducer 14 respectively, become the virtual controlling center in order to the work of control Uninterruptible Power Module 10, Parallel Control and with other Uninterruptible Power Module 10 competitions;
One by-pass line road 18 is series between its I/O end by first order relay 181 and second level relay 182 and constitutes, wherein:
The first order relay 181 of this by-pass line 18 adopts two contact relay TPR (Two-Position-Relay or The-First-Level-Relay), second level relay 182 adopts single contact relay SPR (Single-Position-Relay or The-Second-LevelRelay), it is used to determine whether Uninterruptible Power Module 10 has output, when second level relay 182 closures, then there is output in Uninterruptible Power Module.First order relay 181 is used to determine the state of Uninterruptible Power Module 10 outputs, and when first order relay 181 switched to bypass channel (normal opened contact), Uninterruptible Power Module 10 outputs were by the bypass supply; When first order relay 181 switched to DC/AC inverter 13, Uninterruptible Power Module 10 was promptly by 13 outputs of DC/AC inverter.
In addition, the contact two ends of first order relay 181 are parallel with an electronic switch STS in addition.
Being used of this first order/second level relay 181/182 helps the intelligent management and the control of parallel system.For example when several Uninterruptible Power Module 10,101～10n parallel running, wherein during a Uninterruptible Power Module fault 10, not needing all changes bypass with all Uninterruptible Power Module 10,101～10n, it need only cut off its second level relay 182 at the Uninterruptible Power Module 10 of fault, with Uninterruptible Power Module 10 and other Uninterruptible Power Module 101～10n isolation of fault.And if there is not second level relay 182 in only tripping first order relay 181, directly enter bypass mode, may produce two kinds of results: the one, the civil power situation in parallel in the system with inverter; Another kind may be just at operating Uninterruptible Power Module buttoned-up Uninterruptible Power Module to be charged.
The output of each Uninterruptible Power Module 10,101～10n is connected in parallel in the system, in addition, still together by a group communication line parallel, this group communication line is a high-speed communication line (HSCL, High-Speed-Communication-Line) and a synchronizing clock signals line (SCL, Syn-Clock-Line).Each Uninterruptible Power Module 10, it is online and carry out information exchange according to this that 101～10n all constitutes signal with its controller 17 by high-speed communication line (HSCL) and other module, because each Uninterruptible Power Module 10, the controller 17 of 101～10n possesses independently calculation process and virtual controlling center competition functionality, from each module, select one one automatically as the virtual controlling center so can carry out virtual controlling center competition functionality via this high-speed communication line (HSCL), this virtual controlling center is the core that the Uninterruptible Power Module parallel system is carried out intelligent management, at any time, has only a Uninterruptible Power Module in the whole parallel system as the virtual controlling center.If the virtual controlling center disappears for a certain reason (for example this Uninterruptible Power Module shutdown), system will utilize built-in competition functionality therefrom to produce a new virtual controlling center by other Uninterruptible Power Module.
Again, the virtual controlling center has the control to synchronizing clock signals line (SCL), and send square-wave signal (Sync Clock), as shown in Figure 4, square-wave signal (Sync Clock) is compared identical frequency of tool and phase place with the voltage waveform (Inv Volt) of virtual controlling center output, and the trailing edge of square-wave signal (Sync Clock) is corresponding with the zero crossing of rising edge and output voltage waveforms (Sync Clock).In present embodiment, selected the trailing edge of square-wave signal to do to trigger interruption.All Uninterruptible Power Module in parallel 10,101～10n can both detect the trailing edge of this square wave, and the interruption of the trailing edge that can both produce, as the delay of signal on holding wire considered in computing time, then when parallel connection, the time that zero crossing takes place because of Uninterruptible Power Module 10,101～10n is all identical, so can think that the interruption of each Uninterruptible Power Module 10,101～10n generation synchronizing clock signals trailing edge is identical constantly.By the method for this interruption, can realize that Uninterruptible Power Module 10,101～10n in the parallel system change the action of bypass synchronously.And, can in hardware and software, take effective means of filtering via using synchronous square-wave signal, the influence that can abate the noise prevents the misoperation of Uninterruptible Power Module 10,101～10n, to improve the reliability of parallel system.
See also shown in Figure 8, after synchronizing clock signals interrupt to take place, promptly judge earlier this interrupt whether be by noise jamming cause 811, if not what cause, then continue to carry out interruption content 812 by noise jamming.
The system of parallel uninterrupted power module can realize intelligentized commentaries on classics by-pass procedure, mainly relies on the virtual controlling center.See also shown in Figure 3ly, the control 311 of synchronizing clock signals line is obtained at the virtual controlling center, and constantly sends synchronizing clock signals (Take control ofSyn-Clock-Line And Send Sync Clock) 312.Then, the virtual controlling center is by the information (CollectInformation of all other module) 313 of other Uninterruptible Power Module in the high-speed communication line gathering system, next, the virtual controlling center is according to the information of being collected, need to judge whether whole system to change bypass 314 simultaneously, the basic principle of judging is: whether current total load amount is less than the total capacity of the Uninterruptible Power Module of operate as normal, if, promptly do not need parallel system to change bypass, otherwise, need change bypass simultaneously.
When the virtual controlling center judges that whole system need be changeed bypass, then select the suitable moment that other the Uninterruptible Power Module in the system is sent the control command (To bypassCommand) 315 of changeing bypass.Send the selection of time of order, see also shown in Figure 4, owing to will guarantee the synchronizing process of all Uninterruptible Power Module in the system, promptly necessarily require all Uninterruptible Power Module before the trailing edge of same synchronizing clock signals, receive the order at virtual controlling center, therefore must consider the time-delay of signal transmission and the time-delay of interruption, as shown in Figure 4, the present invention selects the virtual controlling center to send this order in the time at t1, and t2 is a time margin.When send after the order of changeing bypass simultaneously sends at the virtual controlling center, as Fig. 4 and shown in Figure 5, other Uninterruptible Power Module all can be received this order 512 in the system, then, virtual controlling center and other Uninterruptible Power Module begin to wait for that the synchronizing clock signals trailing edge interrupts 513, after the synchronizing clock signals trailing edge interrupts taking place, Uninterruptible Power Module in the system promptly begins to carry out the relay operation 514 of changeing bypass, finishes the process (Fig. 3 step 319～321 are consulted in cooperation) that parallel system changes bypass simultaneously over to immediately.
Still see also shown in Figure 3, when the judgement of virtual controlling center does not need to change bypass simultaneously, just judging whether needs to specify the unusual Uninterruptible Power Module of generation to shut down 316, if, promptly the Uninterruptible Power Module to appointment sends shutdown command 317, even its second level relay tripping of this Uninterruptible Power Module then, and carry out the shutdown action.
When Uninterruptible Power Module when carrying out relay operation, in order to prevent output outage and protection output relay, must carry out the operation of relay by correct step.
See also shown in Figure 1, when a certain Uninterruptible Power Module 10 makes its first order relay 181 trippings, promptly open the electronic switch STS in parallel with it, output and civil power are coupled together, the first order of waiting relay 181 switches to after the bypass, closes electronic switch STS again.So promptly finish Uninterruptible Power Module 10 by the switching that is converted to bypass.As shown in Figure 4, the trailing edge of synchronizing clock signals just in time with the output same-phase, therefore, just in time occurs in the zero crossing of output during 181 trippings of first order relay, the so infringement that can avoid electric arc that output relay is caused, and can reach protective effect.
When the Uninterruptible Power Module in the system 10 is returned by bypass, its flow process is similar to the commentaries on classics bypass situation, as Fig. 6, shown in Figure 7, the virtual controlling center at first will be by the information 611～613 of each Uninterruptible Power Module in the gathering system, judge then whether system need return 614 by bypass, the principle of judging is: its load that is provided of Uninterruptible Power Module under the bypass is provided in the system, and all less than its nominal load, and its inverter output voltage has recovered normal.When whole system need be returned by bypass, the virtual controlling center selects a suitable moment to send out the order 615 of being returned inverter output by bypass by the high-speed communication line, 616, after other Uninterruptible Power Module in the system receives this order, promptly wait for that with the virtual controlling center synchronizing clock signals trailing edge interrupts 617, control output relay then and return the action 618 of inverter output to carry out bypass.(this flow process please cooperate consult Fig. 7 step 711～714)
Can find out the operating mode at virtual controlling center by above-mentioned explanation, and then can understand and adopt the virtual controlling center to have following several advantages:
(1) do not need a fixing control unit to control the operation of whole system in the system.So both can reduce cost, strengthen the reliability of System Operation again.
(2) owing to there is a virtual controlling center in the system, but the information of each Uninterruptible Power Module in the collection network of virtual controlling center, and comprehensive its information, and send control command according to this.So can reach the purpose of whole system being carried out intelligent management (IntelligentManagement).For example, during system redundancy, if a Uninterruptible Power Module fault, because system still has redundancy, so can cut off the output of this Uninterruptible Power Module, other Uninterruptible Power Module is because of not transshipping, so make it work on.Require all Uninterruptible Power Module all to change bypass compared to traditional methods, the method that the present invention proposes obviously more can satisfy the demands for guaranteeing system's output stability and reliability.
In addition, in the arrangement of cpu resource, the present invention has selected the synchronizing clock signals trailing edge is taked lower priority, at first is because the error of relay in the ms level, secondly is because the present invention can tolerate the time (several ms) that Uninterruptible Power Module inverter in parallel with civil power one is of short duration.
Via above analysis, can know that the present invention mainly contains following characteristics:
One. by introducing the virtual controlling central concept, whether make Uninterruptible Power Module in the parallel system change over to is judged the information of each module is collected by bypass system via the virtual controlling center after, and whether decision has module to change bypass over to or bypass is returned, owing to do not need all modules one bypass that runs up, so for the load that output is had relatively high expectations for power supply, have higher reliability.
Two. via using synchronizing clock signals, make the antijamming capability of system strengthen, thereby improved the reliability that parallel system is changeed bypass simultaneously.Because of with interrupt requests, can make the resources untilization of controller more efficient in addition than low precedence.
Three. can guarantee that output relay switches at zero crossing, reach the purpose of protection relay.
In sum, the present invention has really possessed foregoing every advantage, has possessed remarkable efficacy compared to existing parallel system bypass handover mechanism and has promoted, and met the patent of invention important document, and the spy proposes patent application in accordance with the law.
Claims (15)
1. the bypass changing method of a Uninterruptible Power Module parallel system, it is characterized in that, this method comprises: the Uninterruptible Power Module parallel connection of the built-in competition functionality of several difference is with construction system, this Uninterruptible Power Module in parallel is selected one one automatically as the virtual controlling center, and by the information of other Uninterruptible Power Module in this virtual controlling center gathering system, and then judge whether it needs to change bypass over to or gone back to by bypass.
2. the bypass changing method of Uninterruptible Power Module parallel system according to claim 1 is characterized in that these concrete steps comprise:
By producing a virtual controlling center in the Uninterruptible Power Module in the parallel system;
The synchronizing clock signals control is obtained at the virtual controlling center;
The information of each Uninterruptible Power Module in the gathering system of virtual controlling center;
The virtual controlling center judges according to the information of collecting whether whole or local Uninterruptible Power Module carries out transition;
The transition order that the suitable moment sends bypass or return Uninterruptible Power Module that must transition is selected at the virtual controlling center;
Uninterruptible Power Module in the system receives this order;
Uninterruptible Power Module in the system begins to wait for that receiving synchronizing clock signals interrupts;
Carrying out transition switches.
3. the bypass changing method of Uninterruptible Power Module parallel system as claimed in claim 2 is characterized in that, each Uninterruptible Power Module interconnects by high-speed communication line and synchronizing clock signals line.
4. the bypass changing method of Uninterruptible Power Module parallel system as claimed in claim 3, it is characterized in that, this virtual controlling center is produced by high-speed communication line competition by each Uninterruptible Power Module in the system, has only a virtual controlling center in the system.
5. the bypass changing method of Uninterruptible Power Module parallel system as claimed in claim 4, it is characterized in that, by high-speed communication line swap date information, the virtual controlling center sends the transition order of changeing bypass or being returned by bypass by the high-speed communication line between each Uninterruptible Power Module.
6. as the bypass changing method of claim 2 or 5 described Uninterruptible Power Module parallel systems, it is characterized in that, this virtual controlling center control synchronizing clock signals line to be obtaining the synchronizing clock signals control, and sends and the synchronous square-wave signal of its output same frequency by synchronizing clock signals.
7. the bypass changing method of Uninterruptible Power Module parallel system as claimed in claim 6 is characterized in that, every Uninterruptible Power Module can detect synchronizing clock signals, and concurrent living trailing edge interrupts.
8. the bypass changing method of Uninterruptible Power Module parallel system as claimed in claim 7 is characterized in that, this trailing edge interrupts adopting lower priority.
9. the bypass switching device shifter of a Uninterruptible Power Module parallel system, it is characterized in that, interconnect to do parallel running by high-speed communication line and synchronizing clock signals line by several Uninterruptible Power Module, wherein the input of each Uninterruptible Power Module interconnects the input with construction system, and each Uninterruptible Power Module output also interconnects the output with construction system; Wherein:
The frequency conversion output of each Uninterruptible Power Module is provided with a by-pass line road, this by-pass line is series between its I/O end by first order relay and second level relay and constitutes, wherein: first order relay is in order to the switching of decision inverter/bypass, and whether second level relay has output in order to the decision Uninterruptible Power Module.
10. the bypass switching device shifter of Uninterruptible Power Module parallel system as claimed in claim 9 is characterized in that, the first order relay of this by-pass line adopts two contact relays.
11. the bypass switching device shifter as claim 9 or 10 described Uninterruptible Power Module parallel systems is characterized in that, this second level relay adopts the single contact relay.
12. the bypass switching device shifter as claim 9 or 10 described Uninterruptible Power Module parallel systems is characterized in that the contact two ends of this first order relay are parallel with an electronic switch in addition.
13. the bypass switching device shifter of Uninterruptible Power Module parallel system as claimed in claim 9 is characterized in that, is provided with a branch road between input in this parallel system and the output, and a manual bypass switch is arranged on this branch road.
14. the bypass switching device shifter of Uninterruptible Power Module parallel system as claimed in claim 9 is characterized in that, this each Uninterruptible Power Module includes respectively:
One AC/DC rectifier, it is converted to direct current with alternating current input power supplying;
One dc energy depots is positioned on the output of AC/DC rectifier;
One DC/AC inverter, its input is connected with this AC/DC rectifier output end and dc energy depots;
One DC/DC transducer, its input connect the DC power supply input, and output then connects the dc energy depots;
One controller is connected with DC/AC inverter, AC/DC rectifier and DC/DC transducer respectively, in order to control Uninterruptible Power Module work and to make Parallel Control.
15. the bypass switching device shifter of Uninterruptible Power Module parallel system as claimed in claim 14, it is characterized in that, the controller of this each Uninterruptible Power Module has the operation independent processing capacity, built-in virtual controlling center competition functionality, it is online that it constitutes signal by high-speed communication line and synchronizing clock signals line, produces the virtual controlling center by competition according to this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03155441 CN1592031A (en) | 2003-09-05 | 2003-09-05 | Uninterruption power source module parallel system and by-pass switching method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03155441 CN1592031A (en) | 2003-09-05 | 2003-09-05 | Uninterruption power source module parallel system and by-pass switching method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1592031A true CN1592031A (en) | 2005-03-09 |
Family
ID=34598134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03155441 Pending CN1592031A (en) | 2003-09-05 | 2003-09-05 | Uninterruption power source module parallel system and by-pass switching method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1592031A (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100438258C (en) * | 2006-12-08 | 2008-11-26 | 杭州华三通信技术有限公司 | Circuit and method for control of multi-module power supply synchronization |
| CN100440684C (en) * | 2005-06-14 | 2008-12-03 | 利伯特公司 | Method and apparatus for monitoring UPS power sources |
| CN101291058B (en) * | 2007-04-19 | 2011-05-11 | 中兴通讯股份有限公司 | Double AC bus synchronizing apparatus for AC sourced system |
| CN102195845A (en) * | 2010-03-03 | 2011-09-21 | 杭州华三通信技术有限公司 | Method, device and equipment for realizing active-standby switching of main control board |
| CN102480140A (en) * | 2010-11-25 | 2012-05-30 | 中兴通讯股份有限公司 | Method and circuit for synchronizing modularized uninterrupted power supply system |
| CN102739385A (en) * | 2011-03-31 | 2012-10-17 | 力博特公司 | Method and system for logic signal synchronization and synthesis |
| CN101714761B (en) * | 2008-10-08 | 2013-01-30 | 富士电机株式会社 | An uninterrupted power supply device |
| 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 |
| CN103368211A (en) * | 2012-03-28 | 2013-10-23 | 中兴通讯股份有限公司 | Uninterrupted power source system work mode switching method and uninterrupted power source system work mode switching apparatus |
| CN103444049A (en) * | 2011-01-19 | 2013-12-11 | 施耐德电气It公司 | Apparatus and method for providing uninterruptible power |
| CN103580266A (en) * | 2013-11-04 | 2014-02-12 | 广东易事特电源股份有限公司 | UPS parallel operation system and parallel operation method |
| CN103715754A (en) * | 2013-12-17 | 2014-04-09 | 华为技术有限公司 | UPS and power supply system |
| CN104052152A (en) * | 2014-05-26 | 2014-09-17 | 北京航天发射技术研究所 | Intelligent power supply and distribution unit |
| WO2018113704A1 (en) * | 2016-12-23 | 2018-06-28 | Huawei Technologies Co., Ltd. | A switching arrangement for switching between two inputs, equipment, system and a method |
| CN110797968A (en) * | 2019-11-06 | 2020-02-14 | 漳州科华技术有限责任公司 | Power-off prevention method and system for uninterruptible power supply and terminal equipment |
| CN111146858A (en) * | 2020-01-20 | 2020-05-12 | 深圳市科陆电子科技股份有限公司 | Uninterruptible power supply method and system |
-
2003
- 2003-09-05 CN CN 03155441 patent/CN1592031A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100440684C (en) * | 2005-06-14 | 2008-12-03 | 利伯特公司 | Method and apparatus for monitoring UPS power sources |
| CN100438258C (en) * | 2006-12-08 | 2008-11-26 | 杭州华三通信技术有限公司 | Circuit and method for control of multi-module power supply synchronization |
| CN101291058B (en) * | 2007-04-19 | 2011-05-11 | 中兴通讯股份有限公司 | Double AC bus synchronizing apparatus for AC sourced system |
| CN101714761B (en) * | 2008-10-08 | 2013-01-30 | 富士电机株式会社 | An uninterrupted power supply device |
| 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 |
| CN102195845A (en) * | 2010-03-03 | 2011-09-21 | 杭州华三通信技术有限公司 | Method, device and equipment for realizing active-standby switching of main control board |
| CN102480140A (en) * | 2010-11-25 | 2012-05-30 | 中兴通讯股份有限公司 | Method and circuit for synchronizing modularized uninterrupted power supply system |
| CN102480140B (en) * | 2010-11-25 | 2014-04-09 | 中兴通讯股份有限公司 | Method and circuit for synchronizing modularized uninterrupted power supply system |
| CN103444049A (en) * | 2011-01-19 | 2013-12-11 | 施耐德电气It公司 | Apparatus and method for providing uninterruptible power |
| CN102739385B (en) * | 2011-03-31 | 2014-12-10 | 力博特公司 | Method and system for logic signal synchronization and synthesis |
| CN102739385A (en) * | 2011-03-31 | 2012-10-17 | 力博特公司 | Method and system for logic signal synchronization and synthesis |
| CN103368211A (en) * | 2012-03-28 | 2013-10-23 | 中兴通讯股份有限公司 | Uninterrupted power source system work mode switching method and uninterrupted power source system work mode switching apparatus |
| CN103580266A (en) * | 2013-11-04 | 2014-02-12 | 广东易事特电源股份有限公司 | UPS parallel operation system and parallel operation method |
| CN103715754A (en) * | 2013-12-17 | 2014-04-09 | 华为技术有限公司 | UPS and power supply system |
| CN104052152A (en) * | 2014-05-26 | 2014-09-17 | 北京航天发射技术研究所 | Intelligent power supply and distribution unit |
| CN104052152B (en) * | 2014-05-26 | 2017-07-11 | 北京航天发射技术研究所 | Intelligence supplies power distribution equipment |
| WO2018113704A1 (en) * | 2016-12-23 | 2018-06-28 | Huawei Technologies Co., Ltd. | A switching arrangement for switching between two inputs, equipment, system and a method |
| CN110797968A (en) * | 2019-11-06 | 2020-02-14 | 漳州科华技术有限责任公司 | Power-off prevention method and system for uninterruptible power supply and terminal equipment |
| CN110797968B (en) * | 2019-11-06 | 2021-04-27 | 漳州科华技术有限责任公司 | Power-off prevention method and system for uninterruptible power supply and terminal equipment |
| CN111146858A (en) * | 2020-01-20 | 2020-05-12 | 深圳市科陆电子科技股份有限公司 | Uninterruptible power supply method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1592031A (en) | Uninterruption power source module parallel system and by-pass switching method thereof | |
| CN111478307B (en) | Ship direct-current networking power system and operation and power optimization control method thereof | |
| EP3484015B1 (en) | Power supply system and method | |
| EP2528181B1 (en) | POWER SUPPLY SYSTEM WITH INTEGRATION OF WIND POWER, SOLAR ENERGY, DIESEL fuel generator AND MAINS SUPPLY | |
| US20110006607A1 (en) | Hybrid power supply apparatus for data center | |
| CN104682431B (en) | Self-starting method and self-starting system of energy storage converter | |
| US20050036253A1 (en) | Modular AC power supply system with fault bypass and method of switching output modes | |
| CN102074963A (en) | Intelligent reactive compensation comprehensive control device | |
| CN101079759A (en) | Distributed bidirectional forwarding detection method and device | |
| CN1581633A (en) | Uninterrupted power source module parallel control method and system thereof | |
| CN111541362B (en) | Switching control method and system for MMC redundancy sub-module | |
| CN104914746A (en) | MMC converter valve control device based on flexible DC power transmission and control method | |
| CN107919809B (en) | Energy storage converter system and control method thereof | |
| CN1801132A (en) | Computer with multiple processors and operating method thereof | |
| CN111614268A (en) | Frequency converter control method and system, computer storage medium and processor | |
| CN1303495C (en) | Power source monitoring and management method for detecting single non interrupted power system and multiple service units | |
| CN2591840Y (en) | Bus controlled parallel uninterruption power source | |
| TWI220331B (en) | Parallel-connection system of UPS module and bypass toggling method thereof | |
| CN110323831A (en) | More power supply automatic switching control systems based on load actual capacity switching step by step | |
| CN102231700A (en) | Exchange card switching information transmission method and exchange card hot backup system | |
| CN109951087B (en) | High-redundancy synchronization method of intelligent rectifier bridge based on FPGA and communication network | |
| CN205336129U (en) | Main and secondary integrative deflector with redundancy protection function | |
| CN111864781A (en) | Transient active control method for energy storage power station | |
| CN203733107U (en) | Quick active/standby shifting device in active-standby system | |
| CN1767301A (en) | Power system and power converters |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |