CN1323086A

CN1323086A - Special IT UPS

Info

Publication number: CN1323086A
Application number: CN 01114313
Authority: CN
Inventors: 郁百超
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-25
Filing date: 2001-06-25
Publication date: 2001-11-21

Abstract

The special IT UPS can meet the requirement of IT for data safety and reduce failure rate. The method is to limit the application of UPS in the IT range and limit the function of UPS to the application range. All the user equipments related to IT are DC powered, and this simplifies greatly the circuit structure. The present invention can minimize the interference to data generation, treatment and transmission and has the features of saving in power, high efficiency, simple structure, high reliability and low failure rate.

Description

The special-purpose uninterrupted power supply of IT

The present invention is the special-purpose uninterrupted power supply of a kind of IT.

The field that all are relevant with IT, for example communication, control, network, automation, computer etc. are all in develop rapidly.Do not interrupt in order to ensure power supply, it is safe, accurate and stable to guarantee that data produce, handle and transmit, and has all adopted uninterrupted power supply UPS in these fields.

UPS is a kind of full-function device that frequency stabilization, voltage stabilizing, uninterrupted alternating voltage can be provided, can charged resistive load, capacity load, inductive load and electromotive force load.In order to ensure the realization of various functions, its circuit structure complexity.Because IT is more and more higher to the requirement of uninterrupted power supply power supply quality, for under the prerequisite that keeps original all functions, constantly satisfy the demand of IT to data safety, its function becomes more and more, it is more and more higher that performance becomes, and circuit structure also becomes and becomes increasingly complex.Undoubtedly, along with the increase of circuit structure complexity, the failure rate of UPS also increases thereupon.The thing that the uninterrupted power supply industry is had very big satire meaning and embarrassment is, along with the raising of power supply quality, rare left alone without help electricity within a year, but adopted the IT system of UPS, because the fault of UPS equipment itself, the number of times of voltage interruption is sometimes on the contrary than not adopting UPS to increase.

Purpose of the present invention is intended to overcome the above-mentioned defective that UPS exists, and the ever-increasing demand to data safety of As soon as possible Promising Policy IT can minimize failure rate, reaches or reach substantially UPS fault-free in lifetime.

The objective of the invention is to realize: because the equipment relevant with IT all is whole-colored computer and peripheral hardware thereof with following proposal, these equipment have all adopted high stable, highly reliable Switching Power Supply, no longer necessarily need Alternating Current Power Supply, can be positioned at the application of UPS within the IT scope, and the function of UPS only is restricted to adapts with its range of application, its method is, to all subscriber equipmenies relevant that originally can only Alternating Current Power Supply with IT, realize direct current supply, this has just greatly simplified circuit structure, exempted Harmonic Interference fully, though seem that its range of application is narrower, function is more single, good steel has been used on the blade, make it in the range of application of determining, the function performance of determining is reached the peak.Safety with subscriber equipment is the first, data are produced, handles, and the interference of transmission is reduced to minimum, therefore has following characteristics:

1. cost, volume, weight, power consumption reduce to 1/10th, one of percentage, even one thousandth.

2. reach or reach substantially fault-free in the lifetime.

3. exempted Harmonic Interference, it is safe, accurate and stable to guarantee that data produce, handle and transmit.

4. simple in structure, easy to manufacture, be convenient to promote.

Fig. 1, the direct voltage of the special-purpose uninterrupted power supply output of IT enters from the ac input end of subscriber equipment.

Fig. 2, the direct voltage of the special-purpose uninterrupted power supply output of IT enters from the input of the DC/DC converter of subscriber equipment Switching Power Supply.

Fig. 3, the direct voltage of the special-purpose uninterrupted power supply output of IT is provided jointly by voltage compensation pressurizer 1 and standby DC power supply.

Fig. 4, the direct voltage of the special-purpose uninterrupted power supply output of IT is provided jointly by active power factor corrector and standby DC power supply.

Fig. 5, the direct voltage of the special-purpose uninterrupted power supply output of IT pulsating voltage and standby DC power supply after by rectifying and wave-filtering provides jointly.

Fig. 6, the direct voltage of the special-purpose uninterrupted power supply output of IT is provided separately by standby DC power supply

Fig. 7, standby DC power supply is made up of voltage compensation pressurizer 2 and storage battery and SCR1.

Fig. 8, the theory diagram of the special-purpose uninterrupted power supply of IT.

Because the subscriber equipment relevant with IT all adopted Switching Power Supply, after supply power voltage enters Switching Power Supply, the first step is exactly rectification, the line voltage of 220V is behind rectifying and wave-filtering, become the direct voltage about 300V, the direct voltage about the 300V that is provided by the special-purpose uninterrupted power supply of IT remains the direct voltage of 300V behind rectifying and wave-filtering, therefore, direct voltage can directly enter originally can only Alternating Current Power Supply subscriber equipment.

The cutting point that direct voltage enters subscriber equipment has two, first cutting point is, directly enter the input (as Fig. 1) of original alternating voltage, the characteristics of this cutting point are, being equivalent to subscriber equipment is still powering with alternating voltage, do not need subscriber equipment is done any change, be that the special-purpose uninterrupted power supply of IT and traditional UPS have identical interface, the interchange input plug of subscriber equipment, both original AC socket can be inserted, the direct current jack that the special-purpose uninterrupted power supply of IT provides can be inserted again.

Second cutting point is the voltage input end (as Fig. 2) of subscriber equipment switching voltage DC/DC converter, and the characteristics of this cutting point are that subscriber equipment just often is Alternating Current Power Supply (exchange and enter from original socket) at civil power, is direct current supply when the left alone without help electricity of civil power.Because when using mains-supplied, the loss of UPS is zero, and the time of the left alone without help electricity of civil power was compared with the time of its normal power supply, can ignore fully, therefore, the efficient of complete machine is very high, if at this moment adopt the circuit-mode of Fig. 6, its cost, volume, weight, power consumption all have only original one thousandth, in fact approach zero.Because the decreased number of its components and parts arrives near zero, by the product that sort circuit is produced, its failure rate also approaches zero, can accomplish UPS fault-free in lifetime fully again.

The special-purpose uninterrupted power supply of IT is realized the direct voltage of direct current supply, form by the constant DC voltage and the reserve DC power supply of civil power after rectifying and wave-filtering, voltage stabilizing, this constant DC voltage can provide (as Fig. 3) by voltage compensation pressurizer 1, be characterized in entering the voltage of subscriber equipment, the same with traditional UPS, be voltage, kept the identical surface of traditional UPS through having stablized.Owing to exempted the DC/AC converter, greatly simplified circuit structure, make its cost, volume, weight, power consumption all reduce to original 1/10th.Because its components and parts have reduced more than 80%, can accomplish UPS fault-free in lifetime substantially.

This constant DC voltage can be provided (as Fig. 4) by active power factor corrector, the voltage that is characterized in entering subscriber equipment is the direct voltage through having stablized still, and, this voltage has passed through Active Power Factor Correction again, make and the Harmonic Interference of net side to be reduced to minimum that and the power factor of complete machine is brought up to and approached 1.

The special-purpose uninterrupted power supply of IT is realized the direct voltage of direct current supply, form (as Fig. 5) by the pulsating dc voltage and the reserve DC power supply of civil power behind rectifying and wave-filtering, be characterized in, efficient is high than the circuit of Fig. 3, Fig. 4, because lacked a transform part, the loss of electric energy further reduces.In fact, for Switching Power Supply, it is different what the supply power mode of this pulsating direct current, its effect and the power supply effect of Constant Direct Current do not have, because the operating voltage range of Switching Power Supply is very wide, is equivalent to the effect of switching voltage when exchanging city's power supply at most.Because complete machine does not have power inverter, direct voltage only is equivalent to an electric energy loss that semiconductor PN produced from being input to output, and its cost, volume, weight, power consumption all reduce to one of original percentage.Because components and parts further reduce, so the mean free error time further increases, can accomplish UPS fault-free in lifetime.

The special-purpose uninterrupted power supply of IT is realized the direct voltage of direct current supply, only form (as Fig. 6) by the reserve DC power supply, be characterized in, stop any interference, with the external world's being connected without any direct electricity, safe and secret, reliable and stable, be particularly suitable for key departments, perhaps the system of Yi Donging, as aircraft, robot etc.Storage battery can adopt two groups, one group of online use, and another group off-line charging, two group storage batteries automatically switch.For the special-purpose uninterrupted voltage of the IT of this pattern, if must calculate its cost, volume, weight, power consumption, then these four technical indicators have all reached its limiting value zero.

Fig. 7 is standby DC power supply block diagram, and the reserve DC power supply is made up of storage battery and voltage compensation pressurizer 2 and SCR1, and the anode of SCR1 is connected on battery positive voltage, and its negative electrode is received the output of rectifier filter.The charger of storage battery is made up of voltage compensation pressurizer 2, the testing circuit of voltage compensation pressurizer 2 be connected on storage battery discharge loop and and the positive pole of storage battery, detect charging current and accumulator voltage simultaneously.At the charging initial stage, carry out constant current charge, in the charging later stage, carry out constant-voltage charge, carry out floating charge at last.The effect of SCR1 is among the figure, at electric main just often, blocks the voltage of storage battery, guarantees that storage battery only charges not discharge, and guarantees the storage battery float charge voltage, guarantees the hundred-percent capacity of storage battery.When civil power interrupted, SCR1 conducting within 40 microseconds guaranteed that the subscriber equipment supply power voltage does not interrupt.

Fig. 8 is the special-purpose uninterrupted power supply theory diagram of IT, there is shown the theory diagram of whole eight kinds of embodiments, and following narration is all to scheming like this.

The direct voltage of the former output of the special-purpose uninterrupted power supply of IT enters subscriber equipment from two cuttings point, and dash line A, B represent that two paths can choose one of them wantonly.The A path representation enters from the former ac plug of subscriber equipment, and the B path representation enters from the DC/DC converter of subscriber equipment Switching Power Supply, the different qualities of two cuttings point, and the front is existing to be described.

Embodiment 1A: when civil power just often, civil power is through behind the rectifying and wave-filtering, striven after depressor 1 voltage stabilizing from 0 output by voltage compensation, at this moment, SCR1 ends, the voltage of output is that constant DC is pressed.Simultaneously, the direct voltage behind the rectifying and wave-filtering passes through voltage compensation pressurizer 2 to charge in batteries.When civil power interrupts, the SCR1 conducting, the voltage of storage battery arrives 0 point by after 2 voltage stabilizings of voltage compensation pressurizer, and the galvanic current that remains that enters subscriber equipment is pressed.When the city power recovery just often, the voltage behind rectifying and wave-filtering, the compensation voltage stabilizing arrives 0 point again, simultaneously SCR1 turn-offs, and returns to the operating state of beginning.

Embodiment 2A: when civil power just often, civil power is through behind the rectifying and wave-filtering, by after the active power factor corrector voltage stabilizing from 0 output, at this moment, SCR1 ends, the voltage of output is that constant DC is pressed.Simultaneously, the direct voltage behind the rectifying and wave-filtering passes through voltage compensation pressurizer 2 to charge in batteries.When civil power interrupts, the SCR1 conducting, the voltage of storage battery arrives 0 point by behind the active power factor corrector, and what enter subscriber equipment is the direct voltage (the active power adjuster does not have effect to direct voltage) of the monolateral decline of storage battery.When the city power recovery just often, the voltage after rectifying and wave-filtering, the power factor correction arrives 0 point again, simultaneously SCR1 ends, and returns to the operating state of beginning.

Embodiment 3A: in the present embodiment, the dash line frame in the special-purpose uninterrupted power supply frame of broken lines of IT does not have, when civil power just often, SCR1 ends, the voltage of output is the pulsating dc voltage behind the rectifying and wave-filtering, and simultaneously, this voltage passes through voltage compensation pressurizer 2 to charge in batteries.When civil power interrupts, the SCR1 conducting, the voltage of storage battery arrives 0 point by SCR1, and what enter subscriber equipment is the direct voltage of the monolateral decline of storage battery.When the city power recovery just often, the voltage behind the rectifying and wave-filtering arrives 0 point again, simultaneously SCR1 ends, and returns to the operating state of beginning.

Embodiment 4A: in the present embodiment, dash line frame in the special-purpose uninterrupted power supply frame of broken lines of IT does not have, when civil power just often, what enter subscriber equipment is the monolateral drop-out voltage of storage battery, the filtered direct voltage in commercial power rectification by voltage compensation pressurizer 2 to charge in batteries.When civil power interrupts, also be that storage battery is powered to subscriber equipment, therefore, SCR1 is conducting always.When the city power recovery just often, the direct voltage behind the rectifying and wave-filtering begins again charge in batteries is returned to the operating state of beginning.

More than four kinds of embodiment corresponding A kind cut-in manners, corresponding in addition B kind cut-in manner also has four kinds of embodiments, embodiment 1B-4B, at this moment, the ac plug of subscriber equipment does not insert any socket.Because of its operation principle is identical, no longer repeat.

Embodiment 4C: in the present embodiment, the dash line frame in the special-purpose uninterrupted power supply frame of broken lines of IT does not have, and the original ac plug of subscriber equipment inserts in the commercial power socket.When civil power just often, SCR1 turn-offs, civil power enters from the former AC socket of subscriber equipment, simultaneously, the filtered direct voltage in commercial power rectification by voltage compensation pressurizer 2 to charge in batteries.When civil power interrupts, the SCR1 conducting, storage battery is powered to subscriber equipment.When the city power recovery just often, SCR1 turn-offs again, returns to the operating state of beginning.

The current rectifying and wave filtering circuit of the special-purpose uninterrupted power supply of IT adopts the half control rectifier bridge, when civil power is within normal range (NR), the full conducting of half control bridge, when line voltage surpasses in limited time last that subscriber equipment can bear, turn-off rectifier bridge, cutoff high, SCR1 conducting simultaneously, standby DC power supply enters subscriber equipment, guarantees that subscriber equipment safety and supply power voltage do not interrupt.

Because the special-purpose uninterrupted power supply output of IT is direct voltage, can not be with inductive load in above-mentioned four kinds of loads, just can not charged motivation, the equipment of transformer and so on, this is its application limit.Be cost with this limitation just, just make its performance perform to best.But all devices relevant with IT wherein do not comprise motor and transformer, though traditional UPS can in fact not be with such equipment yet.In addition, common air-conditioning can replace with convertible frequency air-conditioner, fluorescent lamp can replace with electricity-saving lamp, linear stabilized power supply can replace with Switching Power Supply, in fact, this limitation is merely nominal, therefore, the practical ranges of the special-purpose uninterrupted power supply of IT not because its output be direct voltage and reducing.

The rectifier filter that the IT special use is uninterruptedly used, voltage compensation pressurizer, active power factor corrector, silicon controlled circuits for triggering or the like all are prior art, need not give unnecessary details.

Claims

1. the special-purpose uninterrupted power supply of IT is characterized in that: to using the subscriber equipment of alternating voltage power supply originally, realize DC-voltage supply.

2. power supply according to claim 1 is characterized in that direct voltage directly enters the original ac input end of subscriber equipment, perhaps enters the input of the DC/DC converter of subscriber equipment Switching Power Supply.

3. power supply according to claim 1, it is characterized in that the direct voltage of realizing direct current supply is made of jointly the constant DC voltage and the reserve DC power supply of civil power after rectifying and wave-filtering, voltage stabilizing, perhaps form jointly, perhaps only form separately by the reserve DC power supply by the pulsating dc voltage and the reserve DC power supply of civil power behind rectifying and wave-filtering.

4. power supply according to claim 3 is characterized in that constant DC voltage is provided by direct voltage compensated regulator 1 or active power factor corrector.

5. power supply according to claim 3 is characterized in that the reserve DC power supply is made up of storage battery and voltage compensation pressurizer 2 and SCR1, and the anode of SCR1 connects the positive pole of storage battery, and its negative electrode is received the output of rectifier filter.