CN103545911B - A kind of uninterruptible power system of dual input intelligent power supply - Google Patents
A kind of uninterruptible power system of dual input intelligent power supply Download PDFInfo
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- CN103545911B CN103545911B CN201310512234.XA CN201310512234A CN103545911B CN 103545911 B CN103545911 B CN 103545911B CN 201310512234 A CN201310512234 A CN 201310512234A CN 103545911 B CN103545911 B CN 103545911B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The invention discloses a kind of uninterruptible power system of dual input intelligent power supply, comprise power supply Input Control Element and UPS unit, described power supply Input Control Element comprises the first input module, the second input module, input handover module and civil power detection module.The present invention detects the operating state of second source in real time by civil power detection module, the power supply of the adjustment of intelligence or the input of switching UPS unit, when two-way AC power all normally works, controlling main working power is that load is powered, when main working power damage or when cannot normally work, standby working power can realize taking over power supply, realize the function that active and standby power supply and main working power in turn are preferentially powered, reduce the possibility of load power down, save electric cost, improve the reliability that load equipment is powered.
Description
Technical field
The present invention relates to the technical field of uninterrupted power supply, particularly relate to a kind of uninterruptible power system of dual input intelligent power supply.
Background technology
UPS (Uninterruptible Power System/Uninterruptible Power Supply, uninterrupted power supply), a kind of containing energy storage device, take inverter as the uninterrupted power supply of the constant voltage constant frequency of chief component, be mainly used in providing continual supply of electric power to single computer, computer network system or other power electronic equipment.When civil power input is normal, UPS is supplied to load to use by after civil power voltage stabilizing, and UPS is now exactly an electric main pressurizer, and it also charges to self-contained battery simultaneously; When commercial power interruption, UPS is immediately by the electric energy of self-contained battery, and the square normal load changed by inversion continues supply alternating current, load is maintained and normally works and protect load soft and hardware not to be damaged.
Along with user's improving constantly load supplying reliability, so propose the alternating current using civil power and generator to send out to access ATS (Automatic transfer switching equipment respectively, automatic transfer switching electric appliance) input on, again the output of ATS is received the input feeder ear of uninterrupted power supply, such using method adds user installation cost and installing space, the contactor of ATS is easily by input service voltage influence, backend load power-off may be caused, and can not communicate with uninterrupted power supply.
When mains failure, ATS sends the dry contact signal opening generator, the storage battery of uninterrupted power supply is in saturation condition always, storage battery only just can by inverter powering load when not having civil power and generator failure, after generator startup optimization is normal, if civil power has a power failure always, then uninterrupted power supply (UPS) power supply given by generator always, storage battery does not play the effect of standby, generator long-play, the life that noise can affect neighbouring resident is produced during operation, the waste gas of discharging pollutes the environment, this electric power system is not energy-conservation, in addition, the contactor of ATS change over switch is also easily by input service voltage influence, backend load power-off may be caused.
Summary of the invention
The object of the invention is to the uninterruptible power system proposing a kind of dual input intelligent power supply, solve above technical problem.
For reaching this object, the present invention by the following technical solutions:
A uninterruptible power system for dual input intelligent power supply, comprising: 1, a kind of uninterruptible power system of dual input intelligent power supply, is characterized in that, comprises power supply Input Control Element and UPS unit;
Described power supply Input Control Element comprises the first input module, the second input module, input handover module and civil power detection module;
The input of described civil power detection module connects the input of described second input module, the output of described civil power detection module connects the second input of described input handover module, the input of described first input module connects the first input end of described input handover module, first output of described input handover module connects the control end of described first input module, second output of described input handover module connects the control end of described second input module, output and the output of described second input module of described first input module are connected the input of described UPS unit respectively,
During work, the input of described first input module is connected the first power supply and second source respectively with the input of described second input module; When described civil power detection module detects that second source is working properly, second output of described input handover module sends switch closure signals, the input of described second input module and output are connected, by second source for described UPS unit provides input power; When described civil power detection module detects second source operation irregularity or does not work; first output of described input handover module sends switch closure signals; the input of described first input module and output are connected, by the first power supply for described UPS unit provides input power.
Preferably, described uninterruptible power system also comprises system control module and accessory power supply, and described accessory power supply is for providing working power and the+VCC power supply of described system control module;
Described input handover module comprises input pattern selector switch, and described input pattern selector switch comprises switching controlling part, the first moving contact, the first normally opened contact and the first normally-closed contact;
The power input of described system control module connects described accessory power supply, the unblocked level output of described system control module connects described first moving contact, for providing unblocked level signal, described first normally opened contact connects the control end of described first input module, described first normally-closed contact connects the control end of described second input module, one end of described switching controlling part connects the output of described civil power detection module, another termination+VCC power supply of described switching controlling part;
During work, when described civil power detection module detects that second source is working properly, described switching controlling part obtains electric, control described first moving contact and described first normally-closed contact is connected, the control end of described second input module receives described unblocked level signal, makes input and the output conducting of described second input module; Otherwise, control described first moving contact and described first normally opened contact is connected, make input and the output conducting of described first input module.
Preferably, described UPS unit comprises UPS battery module; Described input handover module also comprises dry contact module; The first power control switch is also connected with between described power supply Input Control Element and the first power supply;
Described input pattern selector switch also comprises the second moving contact, the second normally opened contact and the second normally-closed contact; Described first power control switch comprises opening end, shutdown side and common port;
Described second moving contact connects described common port, described second normally opened contact connects the second pin of described dry contact module, described second normally-closed contact connects the first pin of described shutdown side and described dry contact module, and described opening end connects the 3rd pin of described dry contact module;
The information about power input of described system control module connects described UPS battery module, for obtaining the information about power of described UPS battery module, the dry contact signal output part of described system control module connects the control end of described dry contact module, for providing dry contact control signal according to information about power, control the second pin and the 3rd pin short circuit/disconnection of described dry contact module;
During work, if the second pin of described dry contact module and the 3rd pin short circuit, when described second moving contact and described second normally opened contact short circuit, described opening end and described common port short circuit, first power control switch closes, and the first power supply and described power supply Input Control Element are connected; If the second pin of described dry contact module and the 3rd pin disconnect or not short circuit, described opening end and described common port not short circuit, the first power supply and described power supply Input Control Element disconnect.
Preferably, described first input module comprises the first power supply input control circuit, and described second input module comprises second source input control circuit; Described first power supply input control circuit comprises the first transformer, the first starting switch, the first rectification circuit, the second rectification circuit, the first reverse-blocking tetrode thyristor and the second reverse-blocking tetrode thyristor; Described second source input control circuit comprises the second transformer, the second starting switch, the 3rd rectification circuit, the 4th rectification circuit, the 3rd reverse-blocking tetrode thyristor and the 4th reverse-blocking tetrode thyristor;
Described accessory power supply is also for providing transformation input power, and described transformation input power comprises transformation input live wire end and transformation input zero line side;
First transformation input of described first transformer connects described transformation input live wire end, second transformation input of described first transformer connects the first end of described first starting switch, second end of described first starting switch connects described transformation input zero line side, and the control end of the first starting switch connects described first normally opened contact;
The output of described first transformer comprises the first transformation fire wire output end, the first transformation zero line output, the second transformation fire wire output end and the second transformation zero line output; Described first transformation fire wire output end connects the first rectification input of described first rectification circuit, described first transformation zero line output connects the second rectification input of described first rectification circuit, first rectification output end of described first rectification circuit connects the control end of described first reverse-blocking tetrode thyristor and the fire wire output end of the first power supply, the first anode of described first reverse-blocking tetrode thyristor connects the second rectification output end of described first rectification circuit, and the second plate of described first reverse-blocking tetrode thyristor connects the live wire input of described UPS unit; Described second transformation fire wire output end connects the first rectification input of described second rectification circuit, described second transformation zero line output connects the second rectification input of described second rectification circuit, first rectification output end of described second rectification circuit connects the control end of described second reverse-blocking tetrode thyristor and the zero line output of the first power supply, the first anode of described second reverse-blocking tetrode thyristor connects the second rectification output end of described second rectification circuit, and the second plate of described second reverse-blocking tetrode thyristor connects the zero line input of described UPS unit;
First transformation input of described second transformer connects described transformation input live wire end, second transformation input of described second transformer connects the first end of described second starting switch, second end of described second starting switch connects described transformation input zero line side or ground connection, and the control end of the second starting switch connects described first normally-closed contact;
The output of described second transformer comprises the 3rd transformation fire wire output end, the 3rd transformation zero line output, the 4th transformation fire wire output end and the 4th transformation zero line output; Described 3rd transformation fire wire output end connects the first rectification input of described 3rd rectification circuit, described 3rd transformation zero line output connects the second rectification input of described 3rd rectification circuit, first rectification output end of described 3rd rectification circuit connects the described control end of the 3rd reverse-blocking tetrode thyristor and the fire wire output end of second source, the first anode of described 3rd reverse-blocking tetrode thyristor connects described 3rd transformation zero line output, and the second plate of described 3rd reverse-blocking tetrode thyristor connects the live wire input of described UPS unit; Described 4th transformation fire wire output end connects the first rectification input of described 4th rectification circuit, described 4th transformation zero line output connects the second rectification input of described 4th rectification circuit, first rectification output end of described 4th rectification circuit connects the described control end of the 4th reverse-blocking tetrode thyristor and the zero line output of second source, the first anode of described 4th reverse-blocking tetrode thyristor connects described 4th transformation zero line output, and the second plate of described 4th reverse-blocking tetrode thyristor connects the live wire input of described UPS unit;
During work, after described first normally opened contact and described unblocked level output are connected, the first end of described first starting switch and the second end conducting, first transformer is started working, with the second rectification circuit, the output that exchanges of the first transformer is converted to direct current output through the first rectification circuit, for the control end of described first reverse-blocking tetrode thyristor and described second reverse-blocking tetrode thyristor provides high level signal, described first reverse-blocking tetrode thyristor and described second reverse-blocking tetrode thyristor are closed, and the input power of UPS unit is provided by the first power supply;
After described first normally-closed contact and described unblocked level output are connected, the first end of described second starting switch and the second end conducting, second transformer is started working, with the 4th rectification circuit, the output that exchanges of the second transformer is converted to direct current output through the 3rd rectification circuit, for the control end of described 3rd reverse-blocking tetrode thyristor and described 4th reverse-blocking tetrode thyristor provides high level signal, described 3rd reverse-blocking tetrode thyristor and described 4th reverse-blocking tetrode thyristor are closed, and the input power of UPS unit is provided by second source.
Preferably, described first rectification circuit comprises the first half-wave rectifying circuit and a RC filter circuit, described second rectification circuit comprises the second half-wave rectifying circuit and the 2nd RC filter circuit, described 3rd rectification circuit comprises the 3rd half-wave rectifying circuit and the 3rd RC filter circuit, and described 4th rectification circuit comprises the 4th half-wave rectifying circuit and the 4th RC filter circuit;
First half-wave rectifying circuit comprises the first rectifier diode and the first commutation capacitor, and a RC filter circuit comprises the first filter resistance and the first filter capacitor; The positive pole of described first rectifier diode connects described first transformation fire wire output end, the negative pole of described first rectifier diode connects the first end of described first commutation capacitor and the first end of the first filter resistance, second end of described first commutation capacitor connects the second end of described first filter capacitor, and the first end of described first filter capacitor connects the second end of described first filter resistance and the control pole of the first reverse-blocking tetrode thyristor;
Second half-wave rectifying circuit comprises the second rectifier diode and the second commutation capacitor, and the 2nd RC filter circuit comprises the second filter resistance and the second filter capacitor; The positive pole of described second rectifier diode connects described second transformation fire wire output end, the negative pole of described second rectifier diode connects the first end of described second commutation capacitor and the first end of the second filter resistance, second end of described second commutation capacitor connects the second end of described second filter capacitor, and the first end of described second filter capacitor connects the second end of described second filter resistance and the control pole of the second reverse-blocking tetrode thyristor;
3rd half-wave rectifying circuit comprises the 3rd rectifier diode and the 3rd commutation capacitor, and the 3rd RC filter circuit comprises the 3rd filter resistance and the 3rd filter capacitor; The positive pole of described 3rd rectifier diode connects described 3rd transformation fire wire output end, the negative pole of described 3rd rectifier diode connects the first end of described 3rd commutation capacitor and the first end of the 3rd filter resistance, second end of described 3rd commutation capacitor connects the second end of described 3rd filter capacitor, and the first end of described 3rd filter capacitor connects the second end of described 3rd filter resistance and the control pole of the 3rd reverse-blocking tetrode thyristor;
4th half-wave rectifying circuit comprises the 4th rectifier diode and the 4th commutation capacitor, and the 4th RC filter circuit comprises the 4th filter resistance and the 4th filter capacitor; The positive pole of described 4th rectifier diode connects described 4th transformation fire wire output end, the negative pole of described 4th rectifier diode connects the first end of described 4th commutation capacitor and the first end of the 4th filter resistance, second end of described 4th commutation capacitor connects the second end of described 4th filter capacitor, and the first end of described 4th filter capacitor connects the second end of described 4th filter resistance and the control pole of the 4th reverse-blocking tetrode thyristor.
Preferably, described civil power detection module comprises live wire sampling end, zero line sampling end and testing circuit;
Described testing circuit comprises diode D1, diode D2, diode D3, diode D4, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, voltage stabilizing didoe ZD1, optical coupler U1, electric capacity C1, electric capacity C2 and triode Q1;
The positive pole of diode D1 connects described live wire sampling end, the negative pole of diode D1 connects the positive pole of diode D2, the first end of the negative pole contact resistance R1 of diode D2, the first end of the second end contact resistance R2 of resistance R1, the first end of the second end contact resistance R4 of resistance R2, the first end of the second end contact resistance R3 of resistance R4, the first end of the second end difference contact resistance R5 of resistance R3, the negative pole of voltage stabilizing didoe ZD1 and the positive pole of electric capacity C1, the positive pole of voltage stabilizing didoe ZD1 connects the positive pole of electric capacity C2, the negative pole of electric capacity C2 connects the negative pole of diode D3 and the positive input terminal of optical coupler U1, second end of described zero line sampling end difference contact resistance R5, the negative pole of electric capacity C1, the positive pole of diode D3 and the negative input end of optical coupler U1, the base stage of the high level output end connecting triode Q1 of optical coupler U1, the low level output end of optical coupler U1 and the grounded collector of triode Q1, the emitter of triode Q1 connects the positive pole of diode D4 and one end of described switching controlling part, the negative pole of diode D4 connects the other end of+VCC power supply and described switching controlling part.
Preferably, described input pattern selector switch adopts relay or contactor, and described switching controlling part is control coil.
Preferably, described UPS battery module comprises dc-battery and monitoring cell electricity quantity module, the input of described monitoring cell electricity quantity module connects described dc-battery, and the output of described monitoring cell electricity quantity module connects the information about power input of described system control module.
Preferably, described first starting switch and the second starting switch are metal-oxide-semiconductor driving switch; Described first reverse-blocking tetrode thyristor, described second reverse-blocking tetrode thyristor, described 3rd reverse-blocking tetrode thyristor and described 4th reverse-blocking tetrode thyristor are bi-directional thyristor switch.
Preferably, described second source is a road civil power, is primary power supply, and described first power supply is another road civil power or generator, is back-up power source.
Beneficial effect of the present invention: the present invention detects the operating state of second source in real time by civil power detection module, the power supply of the adjustment of intelligence or the input of switching UPS unit, when two-way AC power all normally works, controlling main working power is that load is powered, when main working power damage or when cannot normally work, standby working power can realize taking over power supply, when main working power is recovered, controlling to switch main working power is that load is powered, realize the function that active and standby power supply and main working power in turn are preferentially powered, reduce the possibility of load power down, save electric cost, improve the reliability that load equipment is powered.
Accompanying drawing explanation
Fig. 1 is the structural representation of the uninterruptible power system of the dual input intelligent power supply of the first embodiment.
Fig. 2 is the circuit theory diagrams of the civil power detection module of the first embodiment.
Fig. 3 is the structure principle chart of the input handover module of the first embodiment.
Fig. 4 is the circuit theory diagrams of the first input module of the first embodiment.
Fig. 5 is the embody rule schematic diagram of the uninterruptible power system of the dual input intelligent power supply of the second embodiment.
In figure: 101, power supply Input Control Element; 102, UPS unit, 103, the first power supply; 104, second source; 105, load equipment; 106, civil power detection module; 107, handover module is inputted; 108, the first input module; 109, the second input mould; 110, system control module; 111, the first power control switch; 112, accessory power supply; 113, input pattern selector switch; 114, dry contact module; 115, uninterruptible power system.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not full content.
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
Embodiment one:
Please refer to Fig. 1, Fig. 1 is the structural representation of the uninterruptible power system of the dual input intelligent power supply of the first embodiment, the uninterruptible power system 115 that the present embodiment proposes, and comprising: power supply Input Control Element 101 and UPS unit 102.
Wherein, power supply Input Control Element 101 comprises the first input module 108, second input module 109, input handover module 107 and civil power detection module 106.
The input of civil power detection module 106 connects the input of the second input module 109, the output of civil power detection module 106 connects the second input of input handover module 107, the input of the first input module 108 connects the first input end of input handover module 107, first output of input handover module 107 connects the control end of the first input module 108, second output of input handover module 107 connects the control end of the second input module 109, the output of the first input module 108 and the output of the second input module 109 are connected in parallel, and connect the input of UPS unit 102 respectively.
Please refer to Fig. 2, Fig. 2 is the circuit theory diagrams of the civil power detection module of the first embodiment.During work, the input of the first input module 108 is connected the first power supply 103 and second source 104 respectively with the input of the second input module 109; When civil power detection module 106 detects that second source 104 is working properly, second output of input handover module 107 sends switch closure signals, the input of the second input module 109 and output are connected, by second source 104 for UPS unit 102 provides input power; When civil power detection module 106 detects second source 104 operation irregularity or does not work; first output of input handover module 107 sends switch closure signals; the input of the first input module 108 and output are connected, by the first power supply 103 for UPS unit 102 provides input power.
The operating state of second source 104 is detected in real time by civil power detection module 106, the power supply of the adjustment of intelligence or the input of switching UPS unit 102, definition second source 104 is main working power, define the first power supply 103 for standby working power, when two-way AC power all normally works, controlling main working power is that load is powered, when main working power damage or when cannot normally work, standby working power can realize taking over power supply, when main working power is recovered, controlling to switch main working power is that load is powered, realize the function that active and standby power supply and main working power in turn are preferentially powered, reduce the possibility of load equipment 105 power-off, save electric cost, improve the reliability that load equipment 105 is powered.
Concrete, uninterruptible power system 115 also comprises system control module 110 and accessory power supply 112, and accessory power supply 112 is for providing working power and the+VCC power supply of system control module 110.
Please refer to Fig. 3, Fig. 3 is the structure principle chart of the input handover module of the first embodiment.Input handover module 107 comprises input pattern selector switch 113, and input pattern selector switch 113 comprises switching controlling part, the first moving contact, the first normally opened contact and the first normally-closed contact.
The power input of system control module 110 connects accessory power supply 112, the unblocked level output of system control module 110 connects the first moving contact, for providing unblocked level signal, first normally opened contact connects the control end of the first input module 108, first normally-closed contact connects the control end of the second input module 109, one end of switching controlling part connects the output of civil power detection module 106, another termination+VCC power supply of switching controlling part.
During work, when civil power detection module 106 detects that second source 104 is working properly, this switching controlling part obtains electric, control the first moving contact and the first normally-closed contact is connected, the control end of the second input module 109 receives unblocked level signal, makes input and the output conducting of the second input module 109; Otherwise, control the first moving contact and the first normally opened contact is connected, make input and the output conducting of the first input module 108.
More specifically, UPS unit 102 comprises UPS battery module; Input handover module 107 also comprises dry contact module 114; The first power control switch 111 is also connected with between power supply Input Control Element 101 and the first power supply 103.
Input pattern selector switch 113 also comprises the second moving contact, the second normally opened contact and the second normally-closed contact; First power control switch 111 comprises opening end, shutdown side and common port;
Second moving contact connects common port, and the second normally opened contact connects the second pin of dry contact module 114, the first pin of the second normally-closed contact connection closed end and dry contact module 114, and opening end connects the 3rd pin of dry contact module 114; Please refer to Fig. 3, the second pin is the COM end of dry contact module 114, and the first pin is the NC end of dry contact module 114, and the 3rd pin is the NO end of dry contact module 114.
The information about power input of system control module 110 connects UPS battery module, for obtaining the information about power of UPS battery module, the dry contact signal output part of system control module 110 connects the control end of dry contact module 114, for providing dry contact control signal according to information about power, control the second pin and the 3rd pin short circuit/disconnection of dry contact module 114.
During work, if the second pin and the 3rd pin short circuit, when the second moving contact and the second normally opened contact short circuit, opening end and common port short circuit, the first power control switch 111 closes, and the first power supply 103 and power supply Input Control Element 101 are connected; If the second pin and the 3rd pin not short circuit or the second moving contact and the second normally opened contact not short circuit time, opening end and common port not short circuit, the first power supply 103 and power supply Input Control Element 101 disconnect.
The first power supply 103 can be controlled by the closed and disconnected state controlling the first power control switch 111 whether to start working, when second source 104 fault or when not working, the system control module 110 of uninterruptible power system 115 learns the information about power of UPS battery module, and the on off state of the first power supply 103 control switch 111 is controlled according to information about power, the first power supply is not needed to power when making the battery electric quantity of uninterruptible power system 115 sufficient, but UPS battery module is load equipment 105 powers, when battery electric quantity is not enough, changeable first power supply is that load equipment 105 is powered again, simultaneously for UPS battery module is charged, UPS battery module is without the need to being in saturation condition always, do not play the effect of standby, this electric power system is not energy-conservation, and battery is always high pressure storage configuration and also can affects battery life.
Concrete, please refer to Fig. 4, Fig. 4 is the circuit theory diagrams of the first input module of the first embodiment.The principle of the second input module 109 and the first input module 108 is similar.
First input module 108 comprises the first power supply input control circuit, and the second input module 109 comprises second source input control circuit; First power supply input control circuit comprises the first transformer, the first starting switch, the first rectification circuit, the second rectification circuit, the first reverse-blocking tetrode thyristor and the second reverse-blocking tetrode thyristor; Second source input control circuit comprises the second transformer, the second starting switch, the 3rd rectification circuit, the 4th rectification circuit, the 3rd reverse-blocking tetrode thyristor and the 4th reverse-blocking tetrode thyristor.
Accessory power supply 112 is also for providing transformation input power, and transformation input power comprises transformation input live wire end and transformation input zero line side.
First transformation input of the first transformer connects transformation input live wire end, second transformation input of the first transformer connects the first end of the first starting switch, second end of the first starting switch connects transformation input zero line side, and the control end of the first starting switch connects the first normally opened contact.
The output of the first transformer comprises the first transformation fire wire output end, the first transformation zero line output, the second transformation fire wire output end and the second transformation zero line output; First transformation fire wire output end connects the first rectification input of the first rectification circuit, first transformation zero line output connects the second rectification input of the first rectification circuit, first rectification output end of the first rectification circuit connects the control end of the first reverse-blocking tetrode thyristor and the fire wire output end of the first power supply, the first anode of the first reverse-blocking tetrode thyristor connects the second rectification output end of the first rectification circuit, and the second plate of the first reverse-blocking tetrode thyristor connects the live wire input of UPS unit 102; Second transformation fire wire output end connects the first rectification input of the second rectification circuit, second transformation zero line output connects the second rectification input of the second rectification circuit, first rectification output end of the second rectification circuit connects the control end of the second reverse-blocking tetrode thyristor and the zero line output of the first power supply, the first anode of the second reverse-blocking tetrode thyristor connects the second rectification output end of the second rectification circuit, and the second plate of the second reverse-blocking tetrode thyristor connects the zero line input of UPS unit 102.
First transformation input of the second transformer connects transformation input live wire end, second transformation input of the second transformer connects the first end of the second starting switch, second end of the second starting switch connects transformation input zero line side or ground connection, and the control end of the second starting switch connects the first normally-closed contact.
The output of the second transformer comprises the 3rd transformation fire wire output end, the 3rd transformation zero line output, the 4th transformation fire wire output end and the 4th transformation zero line output; 3rd transformation fire wire output end connects the first rectification input of the 3rd rectification circuit, 3rd transformation zero line output connects the second rectification input of the 3rd rectification circuit, first rectification output end of the 3rd rectification circuit connects the control end of the 3rd reverse-blocking tetrode thyristor and the fire wire output end of second source, the first anode of the 3rd reverse-blocking tetrode thyristor connects the 3rd transformation zero line output, and the second plate of the 3rd reverse-blocking tetrode thyristor connects the live wire input of UPS unit 102; 4th transformation fire wire output end connects the first rectification input of the 4th rectification circuit, 4th transformation zero line output connects the second rectification input of the 4th rectification circuit, first rectification output end of the 4th rectification circuit connects the control end of the 4th reverse-blocking tetrode thyristor and the zero line output of second source, the first anode of the 4th reverse-blocking tetrode thyristor connects the 4th transformation zero line output, and the second plate of the 4th reverse-blocking tetrode thyristor connects the live wire input of UPS unit 102.
During work, after the first normally opened contact and unblocked level output are connected, the first end of the first starting switch and the second end conducting, first transformer is started working, with the second rectification circuit, the output that exchanges of the first transformer is converted to direct current output through the first rectification circuit, for the control end of the first reverse-blocking tetrode thyristor and the second reverse-blocking tetrode thyristor provides high level signal, the first reverse-blocking tetrode thyristor and the second reverse-blocking tetrode thyristor are closed, the input power of UPS unit 102 is provided by the first power supply 103.
After the first normally-closed contact and unblocked level output are connected, the first end of the second starting switch and the second end conducting, second transformer is started working, with the 4th rectification circuit, the output that exchanges of the second transformer is converted to direct current output through the 3rd rectification circuit, for the control end of the 3rd reverse-blocking tetrode thyristor and the 4th reverse-blocking tetrode thyristor provides high level signal, 3rd reverse-blocking tetrode thyristor and the 4th reverse-blocking tetrode thyristor are closed, and the input power of UPS unit 102 is provided by second source 104.
The contactor of ATS change over switch is easily by input service voltage influence, backend load power-off may be caused, and can not communicate by same uninterrupted power supply (UPS), intellectuality cannot be realized, the present embodiment adopts controllable silicon to replace ATS change over switch, by exporting the closed and disconnected state of unblocked level signal control thyristor switch to the testing result of civil power detection module 106, and reverse-blocking tetrode thyristor can be opened fast, but it just can must be made to turn off to the current over-zero by it, so reverse-blocking tetrode thyristor turns off need the time, thus the power supply reliability during switching of the first power supply 103 and second source 104 is increased, realize intelligent, high efficiency.
More specifically, first rectification circuit comprises the first half-wave rectifying circuit and a RC filter circuit, second rectification circuit comprises the second half-wave rectifying circuit and the 2nd RC filter circuit, 3rd rectification circuit comprises the 3rd half-wave rectifying circuit and the 3rd RC filter circuit, and the 4th rectification circuit comprises the 4th half-wave rectifying circuit and the 4th RC filter circuit.
First half-wave rectifying circuit comprises the first rectifier diode and the first commutation capacitor, and a RC filter circuit comprises the first filter resistance and the first filter capacitor; The positive pole of the first rectifier diode connects the first transformation fire wire output end, the negative pole of the first rectifier diode connects the first end of the first commutation capacitor and the first end of the first filter resistance, second end of the first commutation capacitor connects the second end of the first filter capacitor, and the first end of the first filter capacitor connects the second end and the first silicon controlled control pole of the first filter resistance.
Second half-wave rectifying circuit comprises the second rectifier diode and the second commutation capacitor, and the 2nd RC filter circuit comprises the second filter resistance and the second filter capacitor; The positive pole of the second rectifier diode connects the second transformation fire wire output end, the negative pole of the second rectifier diode connects the first end of the second commutation capacitor and the first end of the second filter resistance, second end of the second commutation capacitor connects the second end of the second filter capacitor, and the first end of the second filter capacitor connects the second end and the second silicon controlled control pole of the second filter resistance.
3rd half-wave rectifying circuit comprises the 3rd rectifier diode and the 3rd commutation capacitor, and the 3rd RC filter circuit comprises the 3rd filter resistance and the 3rd filter capacitor; The positive pole of the 3rd rectifier diode connects the 3rd transformation fire wire output end, the negative pole of the 3rd rectifier diode connects the first end of the 3rd commutation capacitor and the first end of the 3rd filter resistance, second end of the 3rd commutation capacitor connects the second end of the 3rd filter capacitor, and the first end of the 3rd filter capacitor connects the second end and the 3rd silicon controlled control pole of the 3rd filter resistance.
4th half-wave rectifying circuit comprises the 4th rectifier diode and the 4th commutation capacitor, and the 4th RC filter circuit comprises the 4th filter resistance and the 4th filter capacitor; The positive pole of the 4th rectifier diode connects the 4th transformation fire wire output end, the negative pole of the 4th rectifier diode connects the first end of the 4th commutation capacitor and the first end of the 4th filter resistance, second end of the 4th commutation capacitor connects the second end of the 4th filter capacitor, and the first end of the 4th filter capacitor connects the second end and the 4th silicon controlled control pole of the 4th filter resistance.
The interchange that exported by transformer by rectification circuit is exported and is converted to silicon controlled switch controlling signal, realize by unblocked level control reverse-blocking tetrode thyristor closed/off-state, and then realize the intelligent input control to UPS unit 102.
Concrete, please refer to Fig. 2, civil power detection module 106 comprises live wire sampling end, zero line sampling end and testing circuit.
Testing circuit comprises diode D1, diode D2, diode D3, diode D4, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, voltage stabilizing didoe ZD1, optical coupler U1, electric capacity C1, electric capacity C2 and triode Q1.
The positive pole of diode D1 connects live wire sampling end, the negative pole of diode D1 connects the positive pole of diode D2, the first end of the negative pole contact resistance R1 of diode D2, the first end of the second end contact resistance R2 of resistance R1, the first end of the second end contact resistance R4 of resistance R2, the first end of the second end contact resistance R3 of resistance R4, the first end of the second end difference contact resistance R5 of resistance R3, the negative pole of voltage stabilizing didoe ZD1 and the positive pole of electric capacity C1, the positive pole of voltage stabilizing didoe ZD1 connects the positive pole of electric capacity C2, the negative pole of electric capacity C2 connects the negative pole of diode D3 and the positive input terminal of optical coupler U1, second end of zero line sampling end difference contact resistance R5, the negative pole of electric capacity C1, the positive pole of diode D3 and the negative input end of optical coupler U1, the base stage of the high level output end connecting triode Q1 of optical coupler U1, the low level output end of optical coupler U1 and the grounded collector of triode Q1, the emitter of triode Q1 connects the positive pole of diode D4 and one end of switching controlling part, the negative pole of diode D4 connects the other end of+VCC power supply and switching controlling part.
During work, live wire sampling end and zero line sampling end are connected live wire and the zero line of second source 104 respectively, detect second source 104 whether normally to work, if, second source 104 is through diode D1, after diode D2 diode rectification, through resistance R1, resistance R2, resistance R3, resistance R4 and resistance R5 dividing potential drop, again by powering to after voltage stabilizing didoe ZD1 voltage stabilizing optical coupler U1, after optical coupler U1 conducting, the level of triode Q1 base stage is dragged down, triode Q1 conducting, switching controlling part obtains electric, the unblocked level output of system control module 110 is made to receive the control end of the second input module 109, second source 104 and UPS unit 102 are connected.Simultaneously dry contact module 114 controls the first power control switch 111 and closes, and the first power supply 103 does not work, and uninterruptible power system 115 is converted to second source powering mode, realizes civil power priority task function.
Concrete, the input pattern selector switch 113 of the present embodiment adopts relay or contactor, and switching controlling part is control coil.
Concrete, the UPS battery module in the present embodiment comprises dc-battery and monitoring cell electricity quantity module, and the input of monitoring cell electricity quantity module connects dc-battery, the information about power input of the output connected system control module 110 of monitoring cell electricity quantity module.
Concrete, the first starting switch and the second starting switch are metal-oxide-semiconductor driving switch; First controllable silicon, the second controllable silicon, the 3rd controllable silicon and the 4th controllable silicon are bidirectional triode thyristor.
Between the bidirectional triode thyristor first anode and second plate, no matter added polarity of voltage is forward or oppositely, as long as control the pole trigger voltage different with being added with positive-negative polarity between the first anode, can triggering and conducting be just low resistive state.Now pressure drop also about 1V between the first anode and second plate.Bidirectional triode thyristor, once conducting, even if lose trigger voltage, also can continue to keep conducting state.Only have when the first anode, second plate electric current reduce, be less than and maintain electric current or the polarity of voltage between the first anode and second plate when changing and do not have trigger voltage, bidirectional triode thyristor just blocks, now only have again add trigger voltage can conducting.
The second source mentioned in the present embodiment is a road civil power, is primary power supply, and the first power supply is another road civil power or generator, is back-up power source.
Embodiment two:
Please refer to Fig. 5, Fig. 5 is the embody rule schematic diagram of the uninterruptible power system of the dual input intelligent power supply of the second embodiment.
The explanation of being mainly correlated with to the power supply Input Control Element 101 of uninterruptible power system 115 in the first embodiment and citing, the present embodiment is the embody rule example of uninterruptible power system 115.The first power supply 103 in the present embodiment is generator, and second source 104 is a road civil power.
Uninterruptible power system 115 comprises: Input Control Element 101 and UPS unit 102.
Wherein, UPS unit 102 comprises a UPS filtration module, rectification module, a UPS inversion module, the 2nd UPS inversion module, the 2nd UPS filtration module, single-pass diode and static switch;
Generator and civil power are linked into the input of power supply Input Control Element 101 respectively, the output of power supply Input Control Element 101 connects the input of a UPS filtration module, the output of the one UPS filtration module connects the input of rectification module, the output of rectification module connects the negative pole of single-pass diode respectively, the input of the one UPS inversion module and the input of the 2nd UPS inversion module, the output of the one UPS inversion module connects UPS battery module, the output of the 2nd UPS inversion module connects the input of the 2nd UPS filtration module, the output of the 2nd UPS filtration module connects the first end of static switch, second end of static switch connects load equipment 105.
During work, civil power input is abnormal, and uninterruptible power system 115 passes through inverter powering load by UPS battery module.The low pressure warning value of preset UPS battery module and high pressure prompt value, when the DC Battery Discharge that uninterruptible power system 115 detects UPS battery module is less than or equal to low pressure warning value to the voltage of single battery, control module 110 is toward dry contact module 114 pickup signal, first power control switch 111 starts opening end and common port by dry contact module 114 short circuit, and generator starts.
Connect above-mentioned operating state, after generator operation is normal, open the first input module 108.Input normally when uninterruptible power system 115 detects the first input module 108, system control module 110 opens static switch powering load, also opens a UPS inversion module simultaneously and charges to dc-battery.
Connect above-mentioned operating state, high pressure prompt value is reached and after continuing 2 hours when uninterruptible power system 115 detects voltage that battery charges to the battery of single-unit, system control module 110 sends release signal toward dry contact module 114, the opening end of the first power control switch 111 and common port disconnect, and generator starts.
In addition, uninterruptible power system 115 also comprises by-pass switch and maintenance bypass switch; For when UPS unit 102 fault or municipal power failure time short circuit to fix a breakdown.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a uninterruptible power system for dual input intelligent power supply, is characterized in that, comprises power supply Input Control Element and UPS unit;
Described power supply Input Control Element comprises the first input module, the second input module, input handover module and civil power detection module;
The input of described civil power detection module connects the input of described second input module, the output of described civil power detection module connects the second input of described input handover module, the input of described first input module connects the first input end of described input handover module, first output of described input handover module connects the control end of described first input module, second output of described input handover module connects the control end of described second input module, output and the output of described second input module of described first input module are connected the input of described UPS unit respectively,
During work, the input of described first input module is connected the first power supply and second source respectively with the input of described second input module; When described civil power detection module detects that second source is working properly, second output of described input handover module sends switch closure signals, the input of described second input module and output are connected, by second source for described UPS unit provides input power; When described civil power detection module detects second source operation irregularity or does not work, first output of described input handover module sends switch closure signals, the input of described first input module and output are connected, by the first power supply for described UPS unit provides input power;
Described uninterruptible power system also comprises system control module and accessory power supply, and described accessory power supply is for providing working power and the+VCC power supply of described system control module;
Described input handover module comprises input pattern selector switch, and described input pattern selector switch comprises switching controlling part, the first moving contact, the first normally opened contact and the first normally-closed contact;
The power input of described system control module connects described accessory power supply, the unblocked level output of described system control module connects described first moving contact, for providing unblocked level signal, described first normally opened contact connects the control end of described first input module, described first normally-closed contact connects the control end of described second input module, one end of described switching controlling part connects the output of described civil power detection module, another termination+VCC power supply of described switching controlling part;
During work, when described civil power detection module detects that second source is working properly, described switching controlling part obtains electric, control described first moving contact and described first normally-closed contact is connected, the control end of described second input module receives described unblocked level signal, makes input and the output conducting of described second input module; Otherwise, control described first moving contact and described first normally opened contact is connected, make input and the output conducting of described first input module;
Described UPS unit comprises UPS battery module; Described input handover module also comprises dry contact module; The first power control switch is also connected with between described power supply Input Control Element and the first power supply;
Described input pattern selector switch also comprises the second moving contact, the second normally opened contact and the second normally-closed contact; Described first power control switch comprises opening end, shutdown side and common port;
Described second moving contact connects described common port, described second normally opened contact connects the second pin of described dry contact module, described second normally-closed contact connects the first pin of described shutdown side and described dry contact module, and described opening end connects the 3rd pin of described dry contact module;
The information about power input of described system control module connects described UPS battery module, for obtaining the information about power of described UPS battery module, the dry contact signal output part of described system control module connects the control end of described dry contact module, for providing dry contact control signal according to information about power, control the second pin and the 3rd pin short circuit/disconnection of described dry contact module;
During work, if the second pin of described dry contact module and the 3rd pin short circuit, when described second moving contact and described second normally opened contact short circuit, described opening end and described common port short circuit, first power control switch closes, and the first power supply and described power supply Input Control Element are connected; If the second pin of described dry contact module and the 3rd pin disconnect or not short circuit, described opening end and described common port not short circuit, the first power supply and described power supply Input Control Element disconnect.
2. uninterruptible power system according to claim 1, is characterized in that, described first input module comprises the first power supply input control circuit, and described second input module comprises second source input control circuit; Described first power supply input control circuit comprises the first transformer, the first starting switch, the first rectification circuit, the second rectification circuit, the first reverse-blocking tetrode thyristor and the second reverse-blocking tetrode thyristor; Described second source input control circuit comprises the second transformer, the second starting switch, the 3rd rectification circuit, the 4th rectification circuit, the 3rd reverse-blocking tetrode thyristor and the 4th reverse-blocking tetrode thyristor;
Described accessory power supply is also for providing transformation input power, and described transformation input power comprises transformation input live wire end and transformation input zero line side;
First transformation input of described first transformer connects described transformation input live wire end, second transformation input of described first transformer connects the first end of described first starting switch, second end of described first starting switch connects described transformation input zero line side, and the control end of the first starting switch connects described first normally opened contact;
The output of described first transformer comprises the first transformation fire wire output end, the first transformation zero line output, the second transformation fire wire output end and the second transformation zero line output; Described first transformation fire wire output end connects the first rectification input of described first rectification circuit, described first transformation zero line output connects the second rectification input of described first rectification circuit, first rectification output end of described first rectification circuit connects the control end of described first reverse-blocking tetrode thyristor and the fire wire output end of the first power supply, the first anode of described first reverse-blocking tetrode thyristor connects the second rectification output end of described first rectification circuit, and the second plate of described first reverse-blocking tetrode thyristor connects the live wire input of described UPS unit; Described second transformation fire wire output end connects the first rectification input of described second rectification circuit, described second transformation zero line output connects the second rectification input of described second rectification circuit, first rectification output end of described second rectification circuit connects the control end of described second reverse-blocking tetrode thyristor and the zero line output of the first power supply, the first anode of described second reverse-blocking tetrode thyristor connects the second rectification output end of described second rectification circuit, and the second plate of described second reverse-blocking tetrode thyristor connects the zero line input of described UPS unit;
First transformation input of described second transformer connects described transformation input live wire end, second transformation input of described second transformer connects the first end of described second starting switch, second end of described second starting switch connects described transformation input zero line side or ground connection, and the control end of the second starting switch connects described first normally-closed contact;
The output of described second transformer comprises the 3rd transformation fire wire output end, the 3rd transformation zero line output, the 4th transformation fire wire output end and the 4th transformation zero line output; Described 3rd transformation fire wire output end connects the first rectification input of described 3rd rectification circuit, described 3rd transformation zero line output connects the second rectification input of described 3rd rectification circuit, first rectification output end of described 3rd rectification circuit connects the described control end of the 3rd reverse-blocking tetrode thyristor and the fire wire output end of second source, the first anode of described 3rd reverse-blocking tetrode thyristor connects described 3rd transformation zero line output, and the second plate of described 3rd reverse-blocking tetrode thyristor connects the live wire input of described UPS unit; Described 4th transformation fire wire output end connects the first rectification input of described 4th rectification circuit, described 4th transformation zero line output connects the second rectification input of described 4th rectification circuit, first rectification output end of described 4th rectification circuit connects the described control end of the 4th reverse-blocking tetrode thyristor and the zero line output of second source, the first anode of described 4th reverse-blocking tetrode thyristor connects described 4th transformation zero line output, and the second plate of described 4th reverse-blocking tetrode thyristor connects the live wire input of described UPS unit;
During work, after described first normally opened contact and described unblocked level output are connected, the first end of described first starting switch and the second end conducting, first transformer is started working, with the second rectification circuit, the output that exchanges of the first transformer is converted to direct current output through the first rectification circuit, for the control end of described first reverse-blocking tetrode thyristor and described second reverse-blocking tetrode thyristor provides high level signal, described first reverse-blocking tetrode thyristor and described second reverse-blocking tetrode thyristor are closed, and the input power of UPS unit is provided by the first power supply;
After described first normally-closed contact and described unblocked level output are connected, the first end of described second starting switch and the second end conducting, second transformer is started working, with the 4th rectification circuit, the output that exchanges of the second transformer is converted to direct current output through the 3rd rectification circuit, for the control end of described 3rd reverse-blocking tetrode thyristor and described 4th reverse-blocking tetrode thyristor provides high level signal, described 3rd reverse-blocking tetrode thyristor and described 4th reverse-blocking tetrode thyristor are closed, and the input power of UPS unit is provided by second source.
3. uninterruptible power system according to claim 2, it is characterized in that, described first rectification circuit comprises the first half-wave rectifying circuit and a RC filter circuit, described second rectification circuit comprises the second half-wave rectifying circuit and the 2nd RC filter circuit, described 3rd rectification circuit comprises the 3rd half-wave rectifying circuit and the 3rd RC filter circuit, and described 4th rectification circuit comprises the 4th half-wave rectifying circuit and the 4th RC filter circuit;
First half-wave rectifying circuit comprises the first rectifier diode and the first commutation capacitor, and a RC filter circuit comprises the first filter resistance and the first filter capacitor; The positive pole of described first rectifier diode connects described first transformation fire wire output end, the negative pole of described first rectifier diode connects the first end of described first commutation capacitor and the first end of the first filter resistance, second end of described first commutation capacitor connects the second end of described first filter capacitor, and the first end of described first filter capacitor connects the second end of described first filter resistance and the control pole of the first reverse-blocking tetrode thyristor;
Second half-wave rectifying circuit comprises the second rectifier diode and the second commutation capacitor, and the 2nd RC filter circuit comprises the second filter resistance and the second filter capacitor; The positive pole of described second rectifier diode connects described second transformation fire wire output end, the negative pole of described second rectifier diode connects the first end of described second commutation capacitor and the first end of the second filter resistance, second end of described second commutation capacitor connects the second end of described second filter capacitor, and the first end of described second filter capacitor connects the second end of described second filter resistance and the control pole of the second reverse-blocking tetrode thyristor;
3rd half-wave rectifying circuit comprises the 3rd rectifier diode and the 3rd commutation capacitor, and the 3rd RC filter circuit comprises the 3rd filter resistance and the 3rd filter capacitor; The positive pole of described 3rd rectifier diode connects described 3rd transformation fire wire output end, the negative pole of described 3rd rectifier diode connects the first end of described 3rd commutation capacitor and the first end of the 3rd filter resistance, second end of described 3rd commutation capacitor connects the second end of described 3rd filter capacitor, and the first end of described 3rd filter capacitor connects the second end of described 3rd filter resistance and the control pole of the 3rd reverse-blocking tetrode thyristor;
4th half-wave rectifying circuit comprises the 4th rectifier diode and the 4th commutation capacitor, and the 4th RC filter circuit comprises the 4th filter resistance and the 4th filter capacitor; The positive pole of described 4th rectifier diode connects described 4th transformation fire wire output end, the negative pole of described 4th rectifier diode connects the first end of described 4th commutation capacitor and the first end of the 4th filter resistance, second end of described 4th commutation capacitor connects the second end of described 4th filter capacitor, and the first end of described 4th filter capacitor connects the second end of described 4th filter resistance and the control pole of the 4th reverse-blocking tetrode thyristor.
4. uninterruptible power system according to claim 2, is characterized in that, described civil power detection module comprises live wire sampling end, zero line sampling end and testing circuit;
Described testing circuit comprises diode D1, diode D2, diode D3, diode D4, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, voltage stabilizing didoe ZD1, optical coupler U1, electric capacity C1, electric capacity C2 and triode Q1;
The positive pole of diode D1 connects described live wire sampling end, the negative pole of diode D1 connects the positive pole of diode D2, the first end of the negative pole contact resistance R1 of diode D2, the first end of the second end contact resistance R2 of resistance R1, the first end of the second end contact resistance R4 of resistance R2, the first end of the second end contact resistance R3 of resistance R4, the first end of the second end difference contact resistance R5 of resistance R3, the negative pole of voltage stabilizing didoe ZD1 and the positive pole of electric capacity C1, the positive pole of voltage stabilizing didoe ZD1 connects the positive pole of electric capacity C2, the negative pole of electric capacity C2 connects the negative pole of diode D3 and the positive input terminal of optical coupler U1, second end of described zero line sampling end difference contact resistance R5, the negative pole of electric capacity C1, the positive pole of diode D3 and the negative input end of optical coupler U1, the base stage of the high level output end connecting triode Q1 of optical coupler U1, the low level output end of optical coupler U1 and the grounded collector of triode Q1, the emitter of triode Q1 connects the positive pole of diode D4 and one end of described switching controlling part, the negative pole of diode D4 connects the other end of+VCC power supply and described switching controlling part.
5. uninterruptible power system according to claim 1, is characterized in that, described input pattern selector switch adopts relay or contactor, and described switching controlling part is control coil.
6. uninterruptible power system according to claim 1, it is characterized in that, described UPS battery module comprises dc-battery and monitoring cell electricity quantity module, the input of described monitoring cell electricity quantity module connects described dc-battery, and the output of described monitoring cell electricity quantity module connects the information about power input of described system control module.
7. uninterruptible power system according to claim 2, is characterized in that, described first starting switch and the second starting switch are metal-oxide-semiconductor driving switch; Described first reverse-blocking tetrode thyristor, described second reverse-blocking tetrode thyristor, described 3rd reverse-blocking tetrode thyristor and described 4th reverse-blocking tetrode thyristor are bi-directional thyristor switch.
8. the uninterruptible power system according to any one of claim 1-7, is characterized in that, described second source is a road civil power, is primary power supply, and described first power supply is another road civil power or generator, is back-up power source.
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