CN102723744B - A kind of UPS module and ups system - Google Patents
A kind of UPS module and ups system Download PDFInfo
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- CN102723744B CN102723744B CN201110076511.8A CN201110076511A CN102723744B CN 102723744 B CN102723744 B CN 102723744B CN 201110076511 A CN201110076511 A CN 201110076511A CN 102723744 B CN102723744 B CN 102723744B
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Abstract
The present invention relates to a kind of UPS module and ups system, this UPS module includes DC/DC unit, and the PFC unit being sequentially connected with, inversion unit and charger, described PFC unit includes rectification circuit and the chopper circuit being connected, it is characterized in that, when electric main exception, the output voltage of described accumulator is converted into the first DC voltage by the first brachium pontis of described chopper circuit, and export the first input end to inversion unit, the output voltage of described accumulator is converted into the second DC voltage by described DC/DC unit, and export the second input to inversion unit, described first DC voltage and the second direct current component inversion are alternating voltage by described inversion unit.Implement technical scheme, improve efficiency, save space and cost.
Description
Technical field
The present invention relates to Power Electronic Technique, more particularly, it relates to a kind of UPS module and ups system.
Background technology
UPS (Uninterruptible Power Supply, uninterrupted power source) is widely used in electric power, telecommunications, gold
Melt, government, multiple industries such as manufacture, it works on a period of time after can being guaranteed in having a power failure, and makes the user will not be because having a power failure
And affect work or lose data, it is also possible to eliminate the surge on civil power, instant high-voltage, moment low-voltage, electric wire noise and
Frequency shift (FS) etc. " power pollution ".
Fig. 1 is the circuit diagram of a kind of UPS module of prior art, and this UPS module is used for carrying out discharge and recharge for accumulator, and
Including PFC unit 100, inversion unit 200, charger 300 and DC/DC unit 400, wherein, PFC unit 100 includes rectified current
Road and chopper circuit.When electric main is normal, rectification circuit carries out rectification to ac commercial power voltage, and chopper circuit is by changing
Photovoltaic conversion after rectification is stable DC voltage by the make-to-break ratio of switching tube, and this chopper circuit includes two brachium pontis, wherein, cuts
The upper brachium pontis of wave circuit is for being a stable DC voltage by the photovoltaic conversion after the positive half cycle rectification of electric main, and copped wave is electric
The lower brachium pontis on road is for being another stable DC voltage by the photovoltaic conversion after the negative half period rectification of electric main, and the two is steady
Fixed DC voltage is, after being added, the stable DC voltage that this chopper circuit finally exports.Inversion unit 200 is stable straight to this
Stream voltage carries out inversion, to power to the load and to be charged for accumulator by charger 300.When electric main exception,
The output voltage of accumulator is converted into DC voltage by DC/DC unit 400, and this DC voltage inversion is friendship by inversion unit 200
Stream voltage, this alternating voltage is load supplying.
But, in this ups system, PFC unit 100 and DC/DC unit 400 is entirely isolated out, although this
Completely isolated design for multiple UPS module in parallel with shared accumulator in the case of, the reliability of system can be improved, but real
On border, owing to DC/DC unit 400 is completely isolated with PFC unit 100, there is no coupling circuit, when electric main exception, DC/DC
Unit 400 need power relatively big, the most necessarily cause the cost of UPS module and space relatively big and inefficient.Below with one
Individual example illustrates: assume that the power of the upper brachium pontis that power is P, PFC unit 100 of the load of this UPS module at least needs P/
The power of the lower brachium pontis of 2, PFC unit 100 the most at least needs P/2, and the power of DC/DC unit 400 at least needs P, therefore exists
During design DC/DC unit 400, inevitable requirement selects element according to power P, the most necessarily causes the space of UPS module and becomes
This is the biggest, and efficiency is the lowest.Therefore, this completely isolated UPS module from the point of view of the angle of cost, space and efficiency all
It it not optimum selection.
Summary of the invention
The technical problem to be solved in the present invention is, causes for above-mentioned UPS module completely isolated of prior art
Cost is high, space is big, the low defect of efficiency, it is provided that a kind of low cost, the UPS module that space is little, efficiency is high.
The technical solution adopted for the present invention to solve the technical problems is: a kind of UPS module of structure, for entering accumulator
Row discharge and recharge, including DC/DC unit and the PFC unit, inversion unit and the charger that are sequentially connected with, described PFC unit includes phase
The rectification circuit connected and chopper circuit, when electric main exception, the first brachium pontis of described chopper circuit is by described accumulator
Output voltage be converted into the first DC voltage, and export the first input end to inversion unit, described DC/DC unit is by described
The output voltage of accumulator is converted into the second DC voltage, and exports the second input to inversion unit, described inversion unit
It is alternating voltage by described first DC voltage and the second direct current component inversion.
In UPS module of the present invention, described first brachium pontis is upper brachium pontis, and described second brachium pontis is lower brachium pontis；Or,
Described first brachium pontis is lower brachium pontis, and described second brachium pontis is upper brachium pontis.
In UPS module of the present invention, the upper brachium pontis of described chopper circuit include the first inductance, the second diode,
First electrochemical capacitor and the first switching tube of anti-paralleled diode；The lower brachium pontis of described chopper circuit include the second inductance, the 3rd
The second switch pipe of diode, the second electrochemical capacitor and anti-paralleled diode；Described chopper circuit also includes switching, wherein,
First end of described first inductance connects the first outfan of described rectification circuit, the second end of described first inductance
Connecting the anode of described second diode and the second end of the first switching tube, the negative electrode of described second diode connects the first electrolysis
The anode of electric capacity and the first input end of inversion unit, the negative terminal of the first electrochemical capacitor and the 3rd end of the first switching tube connect in the lump
Connecing center line, the first end of described second inductance connects the second outfan of described rectification circuit, the second end of described second inductance
Connecting negative electrode and the 3rd end of second switch pipe of described 3rd diode, the anode of described 3rd diode connects the second electrolysis
The negative terminal of electric capacity and the second input of described inversion unit, the anode of the second electrochemical capacitor and the second end of second switch pipe are even
Connect center line,
The anode of described accumulator connects the first end of described first inductance by switch, and the anode of described accumulator is also connected with
The first input end of described DC/DC unit, the negative terminal of described accumulator connects described center line and the second of described DC/DC unit
Input, the first outfan of described DC/DC unit connects the second input of described inversion unit, described DC/DC unit
Second outfan connects described center line.
In UPS module of the present invention, the upper brachium pontis of described chopper circuit include the first inductance, the second diode,
First electrochemical capacitor and the first switching tube of anti-paralleled diode；The lower brachium pontis of described chopper circuit include the second inductance, the 3rd
The second switch pipe of diode, the second electrochemical capacitor and anti-paralleled diode；Described chopper circuit also includes switching, wherein,
First end of described first inductance connects the first outfan of described rectification circuit, the second end of described first inductance
Connecting the anode of described second diode and the second end of the first switching tube, the negative electrode of described second diode connects the first electrolysis
The anode of electric capacity and the first input end of inversion unit, the negative terminal of the first electrochemical capacitor and the 3rd end of the first switching tube connect in the lump
Connecing center line, the first end of described second inductance connects the second outfan of described rectification circuit, the second end of described second inductance
Connecting negative electrode and the 3rd end of second switch pipe of described 3rd diode, the anode of described 3rd diode connects the second electrolysis
The negative terminal of electric capacity and the second input of described inversion unit, the anode of the second electrochemical capacitor and the second end of second switch pipe are even
Connect center line,
The negative terminal of described accumulator connects the first end of described second inductance by switch, and the negative terminal of described accumulator is also connected with
Second input of described DC/DC unit, it is first defeated that the anode of described accumulator connects described center line and described DC/DC unit
Entering end, the first outfan of described DC/DC unit connects the first input end of described inversion unit, the of described DC/DC unit
Two outfans connect described center line.
In UPS module of the present invention, described DC/DC unit include anti-paralleled diode the 11st switching tube,
The twelvemo of anti-paralleled diode closes pipe, the first transformator, the 4th diode, the 5th diode, the 5th electric capacity and the 6th electricity
Sense, wherein,
The first input end that second end is DC/DC unit of the 11st switching tube, it is DC/ that twelvemo closes the 3rd end of pipe
Second input of DC unit, the 3rd end of the 11st switching tube and twelvemo are closed the second end of pipe and are connect the first transformator in the lump
The Same Name of Ends of armature winding, the non-same polarity of the first primary winding is connected by the 5th electric capacity being in series and the 6th inductance
Connect twelvemo close pipe the 3rd end, the anode of termination of the same name 4th diode of first transformator the first secondary windings, first
The non-same polarity of transformator second subprime winding connects the anode of the 5th diode, the negative electrode of the 4th diode and the 5th diode
Negative electrode connects center line in the lump, the non-same polarity of first transformator the first secondary windings and the first transformator second subprime winding of the same name
End connects the input of inversion unit in the lump.
In UPS module of the present invention, described DC/DC unit includes the 9th switching tube of anti-paralleled diode, anti-
Tenth switching tube of parallel diode, the 11st switching tube of anti-paralleled diode, anti-paralleled diode twelvemo close pipe,
First transformator, the 4th diode, the 5th diode, the 5th electric capacity and the 6th inductance, wherein,
Second end of the 9th switching tube and the second end of the 11st switching tube connect, and are the first input of DC/DC unit
End, the 3rd end of the tenth switching tube and the three-terminal link of twelvemo pass pipe, and be the second input of DC/DC unit, the
3rd end of nine switching tubes and the second end of the tenth switching tube connect the by the 6th inductance that is in series and the 5th electric capacity in the lump
The non-same polarity of one primary winding, the 3rd end of the 11st switching tube and twelvemo are closed the second end of pipe and are connect the in the lump
The Same Name of Ends of one primary winding, the anode of termination of the same name 4th diode of first transformator the first secondary windings, the
The non-same polarity of one transformator second subprime winding connects the anode of the 5th diode, the negative electrode of the 4th diode and the 5th diode
Negative electrode connect center line in the lump, the non-same polarity of first transformator the first secondary windings and the first transformator second subprime winding same
Name end connects the input of inversion unit in the lump.
In UPS module of the present invention, described charger includes the 7th switching tube of anti-paralleled diode, inverse parallel
8th switching tube, the 4th inductance, the 5th inductance, the 6th diode, the 7th diode and the 4th electric capacity of diode, wherein,
First outfan of the second termination inversion unit of the 7th switching tube, the 3rd end of the 7th switching tube is by the 4th electricity
Sense connects the anode of accumulator, and the negative terminal of accumulator connects center line, the second output of the 3rd termination inversion unit of the 8th switching tube
End, the second end of the 8th switching tube connects center line by the 5th inductance, the two ends of the 4th electric capacity connect respectively accumulator anode and
Negative terminal, the anode of the 6th diode connects center line, and the negative electrode of the 6th diode connects the 3rd end of the 7th switching tube, the seven or two pole
The anode of pipe connects the 3rd end of the 8th switching tube, and the negative electrode of the 7th diode connects the anode of accumulator.
In UPS module of the present invention, described charger include anti-paralleled diode the 13rd switching tube, anti-the most also
14th switching tube, the second transformator, diode rectifier bridge, the 6th inductance, the 8th diode and the 6th electric capacity of connection diode,
Wherein,
Second end of the 13rd switching tube connects the first outfan of inversion unit, and the 3rd termination of the 14th switching tube is inverse
Becoming the second outfan of unit, the 3rd end of the 13rd switching tube and the second end of the 14th switching tube connect the second transformator in the lump
The Same Name of Ends of armature winding, the non-same polarity of the armature winding of the second transformator connects center line, the secondary windings of the second transformator
The first input end of termination diode rectifier bridge of the same name, the non-same polarity of the secondary windings of the second transformator connects diode rectifier bridge
The second input, the first outfan of diode rectifier bridge connects the anode of the 8th diode, the eight or two pole by the 6th inductance
The negative electrode of pipe connects the anode of accumulator, and the second output termination center line of diode rectifier bridge, the anode of the 6th electrochemical capacitor connects
The anode of the 8th diode, the negative terminal of the 6th electrochemical capacitor connects center line.
In UPS module of the present invention, described inversion unit is two level inverter circuits, I type tri-level inversion electricity
Road or T-shaped three-level inverter circuit.
The present invention also constructs a kind of ups system, the UPS module being in parallel including at least two, it is characterised in that described
UPS module is above-described UPS module.
Implement technical scheme, due to when electric main exception, can be by the output voltage of accumulator, a road warp
First brachium pontis of chopper circuit exports the first input end to inversion unit after processing, and another road is defeated after DC/DC cell processing
Going out the second input to inversion unit, the inversion unit voltage to being inputted carries out inversion to power to the load, and uses this
The mode being not fully insulated, it is possible to decrease the cost of DC/DC unit and space, and improve efficiency.For below with an example
Bright: to assume that the power of the upper brachium pontis that power is P, PFC unit of the load of this UPS module at least needs under P/2, PFC unit
The power of brachium pontis the most at least needs P/2, and the power of DC/DC unit at least has only to P/2, therefore when designing DC/DC unit,
Inevitable requirement selects element according to power P/2, compared to existing technology in select element, required one-tenth according to power P
This and space all will be substantially reduced, and efficiency is improved.
It addition, use this mode being not fully insulated, the transformator (transformation in charger in charger also can be saved
Device plays buffer action), also can improve efficiency, save space and cost；
Finally, DC/DC unit uses the LLC resonance circuit being made up of transformator, the 5th electric capacity and the 6th inductance, and LLC is humorous
Circuit soft switch of shaking technology reduces loss, improves efficiency.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the circuit diagram of a kind of UPS module of prior art；
Fig. 2 is the logic chart of UPS module embodiment one of the present invention；
Fig. 3 is the circuit diagram of UPS module embodiment one of the present invention；
Fig. 4 is the circuit diagram of UPS module embodiment two of the present invention；
Fig. 5 is the circuit diagram of UPS module embodiment three of the present invention；
Fig. 6 is the circuit diagram of UPS module embodiment four of the present invention；
Fig. 7 is the circuit diagram of UPS module embodiment five of the present invention.
Detailed description of the invention
As in figure 2 it is shown, in the logic chart of UPS module of the present invention, this UPS module includes DC/DC unit 400, and successively
PFC unit 100, inversion unit 200 and the charger 300 connected, wherein, PFC unit 100 includes rectification circuit and copped wave electricity
Road.
This UPS module is when electric main is normal, and electric main obtains DC voltage by rectifier circuit rectifies, this direct current
After the chopped processing of circuit of voltage, exporting stable DC voltage to inversion unit 200, inversion unit 200 is by this stable DC electricity
Pressure inversion is alternating voltage, to power to load (not shown) and to be charged to accumulator by charger 300.
This UPS module is when electric main exception, and the output voltage of accumulator is converted into by the first brachium pontis of chopper circuit
First DC voltage, and the first input end exported to inversion unit 200, the output voltage of accumulator is turned by DC/DC unit 400
Turn to the second DC voltage, and export the second input to inversion unit 200, inversion unit 200 by the first DC voltage and
Second direct current component inversion is alternating voltage, to power to the load.
Implement the technical scheme of this embodiment, due to when electric main exception, can be by the output voltage of accumulator, a road
First brachium pontis of chopped circuit exports the first input end to inversion unit after processing, and another road is after DC/DC cell processing
Exporting to the second input of inversion unit, the inversion unit voltage to being inputted carries out inversion to power to the load, and uses this
Plant the mode being not fully insulated, it is possible to decrease the cost of DC/DC unit and space, and improve efficiency.Come with an example below
Illustrate: assume that the power of the upper brachium pontis that power is P, PFC unit of the load of this UPS module at least needs P/2, PFC unit
The power of lower brachium pontis the most at least needs P/2, and the power of DC/DC unit at least has only to P/2, therefore at design DC/DC unit
Time, inevitable requirement selects element according to power P/2, compared to existing technology in DC/DC unit select unit according to power P
Part, required cost and space all will be substantially reduced, and efficiency is improved.
First brachium pontis of above-mentioned chopper circuit can be upper brachium pontis, then the second corresponding brachium pontis is lower brachium pontis；Or, above-mentioned
The first brachium pontis of chopper circuit can be lower brachium pontis, then the second corresponding brachium pontis is upper brachium pontis.
Fig. 3 is the circuit diagram of UPS module embodiment one of the present invention, and in this UPS module, rectification circuit is diode rectification
Bridge D1, stresses chopper circuit, inversion unit 200, charger 300 and DC/DC unit 400 below.
1. chopper circuit
The upper brachium pontis of this chopper circuit includes the first inductance L1, the second diode D2, the first electrochemical capacitor C1, inverse parallel two
First switching tube Q1 of pole pipe, the lower brachium pontis of chopper circuit includes the second inductance L2, the 3rd diode D3, the second electrochemical capacitor
C2, the second switch pipe Q2 of anti-paralleled diode, this chopper circuit also includes the first switch S1, second switch S2 and the 3rd switch
S3。
In this embodiment, the first switching tube Q1 and second switch pipe Q2 preferred IGBT pipe, the second end of switching tube is it
Colelctor electrode, the 3rd end of switching tube is its emitter stage, and the first end of switching tube is its gate-drive pole, and connects control circuit
(not shown).It should be noted that, the first end of the switching tube in all embodiments of the application all connects control circuit, this control
Circuit is for controlling break-make frequency and the make-and-break time of each switching tube.
In this chopper circuit, first end of the first inductance L1 connects the first output of rectification circuit by the first switch S1
End, second end of the first inductance L1 connects anode and second end of the first switching tube Q1, second diode of the second diode D2
The negative electrode of D2 connects anode and the first input end of inversion unit 200 of the first electrochemical capacitor C1, and the first electrochemical capacitor C1's is negative
3rd end of end and the first switching tube Q1 connects center line N in the lump, and first end of the second inductance L2 connects whole by second switch S2
Second outfan of current circuit, second end of the second inductance L2 connects the of the negative electrode of the 3rd diode D3 and second switch pipe Q2
Three ends, the anode of the 3rd diode D3 connects the negative terminal of the second electrochemical capacitor C2 and the second input of inversion unit 200, and second
The anode of electrochemical capacitor C2 and second end of second switch pipe Q2 connect center line N, the anode BAT+ of accumulator by the 3rd switch
S3 connects first end of the first inductance L1, and the negative terminal of accumulator connects center line N.
2. inversion unit 200
This inversion unit 200 is T-shaped inverter circuit, including the 3rd switching tube Q3, inverse parallel two pole of anti-paralleled diode
4th switching tube Q4 of pipe, the 5th switching tube Q5 of anti-paralleled diode, the 6th switching tube Q6 of anti-paralleled diode, the 3rd electricity
Sense L3 and the 3rd electric capacity C3.In this embodiment, the 3rd switching tube Q3, the 4th switching tube Q4, the 5th switching tube Q5, the 6th switch
The preferred IGBT of pipe Q6 manages, and now, the second end of switching tube is its colelctor electrode, and the 3rd end of switching tube is its emitter stage.Should say
Bright, the present invention do not limit the 3rd switching tube Q3, the 4th switching tube Q4, the 5th switching tube Q5, the 6th switching tube Q6 as
IGBT manages, in the case of the highest to switch frequency requirement, it is possible to selecting metal-oxide-semiconductor, now, the second end of switching tube is its leakage
Pole, the 3rd end of switching tube is its source electrode.
In this inversion unit 200, the first input end that the second end is inversion unit 200 of the 5th switching tube Q5, the 6th
Second input that 3rd end is inversion unit 200 of switching tube Q6, three-terminal link the 6th switching tube of the 5th switching tube Q5
Second end of Q6, the 3rd end of the 4th switching tube Q4 and first end of the 3rd inductance L3, second end of the 4th switching tube Q4 connects
Second end of the 3rd switching tube Q3, the 3rd termination center line of the 3rd switching tube Q3, second end of the 3rd inductance L3 is by the 3rd electricity
Hold and meet center line N.
3. charger 300
This charger 300 include the 7th switching tube Q7 of anti-paralleled diode, the 8th switching tube Q8 of anti-paralleled diode,
4th inductance L4, the 5th inductance L5, the 6th diode D6, the 7th diode D7 and the 4th electric capacity C4.In this embodiment, the 7th
Switching tube Q7, the 8th switching tube Q8 preferred IGBT pipe, now, the second end of switching tube is its colelctor electrode, the 3rd end of switching tube
For its emitter stage.Manage as IGBT, right it should be noted that, the present invention does not limit the 7th switching tube Q7, the 8th switching tube Q8
In the case of switching frequency requirement is the highest, it is possible to selecting metal-oxide-semiconductor, now, the second end of switching tube is its drain electrode, switching tube
3rd end is its source electrode.
In this charger 300, second end of second termination the 5th switching tube Q5 of the 7th switching tube Q7, the 7th switching tube
3rd end of Q7 connects the anode BAT+ of accumulator by the 4th inductance L4, and the negative terminal of accumulator meets center line N, the 8th switching tube Q8
The 3rd termination the 6th switching tube Q6 the 3rd end, second end of the 8th switching tube Q8 meets center line N by the 5th inductance L5, the 4th
The two ends of electric capacity C4 connect anode and the negative terminal of accumulator respectively, and the anode of the 6th diode D6 connects center line N, the 6th diode
The negative electrode of D6 connects the 3rd end of the 7th switching tube Q7, and the anode of the 7th diode D7 connects second end of the 8th switching tube Q8, the
The negative electrode of seven diode D7 connects the anode of accumulator.
4.DC/DC unit 400
This DC/DC unit 400 includes the 9th switching tube Q9 of anti-paralleled diode, the tenth switching tube of anti-paralleled diode
Q10, the 11st switching tube Q11 of anti-paralleled diode, anti-paralleled diode twelvemo close pipe Q12, transformator T1, the 4th
Diode D4, the 5th diode D5, the 5th electric capacity C5 and the 6th inductance L6.In this embodiment, the 9th switching tube Q9, the tenth open
Closing pipe Q10, the 11st switching tube Q11, the twelvemo pass preferred metal-oxide-semiconductor of pipe Q12, now, the second end of switching tube is its drain electrode,
3rd end of switching tube is its source electrode.It should be noted that, the present invention do not limit the 9th switching tube Q9, the tenth switching tube Q10,
It is metal-oxide-semiconductor that 11st switching tube Q11, twelvemo close pipe Q12, it is possible to selecting IGBT pipe, now, the second end of switching tube is it
Colelctor electrode, the 3rd end of switching tube is its emitter stage.
In this DC/DC unit 400, second end of the 9th switching tube Q9 and second end of the 11st switching tube Q11 connect,
And be the first input end of DC/DC unit 400, this first input end connects the anode BAT+ of accumulator, the tenth switching tube Q10's
3rd end and the three-terminal link of twelvemo pass pipe Q12, and be the second input of DC/DC unit, this second input is even
Connect the negative terminal of accumulator, the 3rd end of the 9th switching tube Q9 and second end of the tenth switching tube Q10 in the lump by be in series the
Six inductance L6 and the non-same polarity of the 5th electric capacity C5 connection transformer T1 armature winding, the 3rd end of the 11st switching tube Q11 and
Second end of twelvemo pass pipe Q12 connects the Same Name of Ends of transformator T1 armature winding in the lump, transformator T1 the first secondary windings
The anode of termination the 4th diode D4 of the same name, the non-same polarity of transformator T1 second subprime winding connects the sun of the 5th diode D5
Pole, the negative electrode of the 4th diode D4 and the negative electrode of the 5th diode D5 connect the non-of center line N, transformator T1 the first secondary windings in the lump
The Same Name of Ends of Same Name of Ends and transformator T1 second subprime winding connects the 3rd end of the 6th switching tube Q6 in the lump.
It should be noted that, the present invention does not limit the rectifier system of the transformator T1 secondary of DC/DC unit 400, permissible
It is the full-wave rectifying circuit as described in above-described embodiment, it is also possible to be full bridge rectifier.
The operation principle of this UPS module is described below, and when electric main is normal, the first switch S1 and second switch S2 closes
Closing, the 3rd switch S3 disconnects, and now, electric main is output AC voltage, this exchange after PFC unit 100, inversion unit 200
Voltage is load supplying and is charged to accumulator by charger 300.
It should be noted that, those skilled in the art should be able to understand when electric main is normal unit realize former
Reason, does not repeats at this.
The situation that the most only explanation electric main is abnormal, now, disconnects the first switch S1 and second switch S2, closes the 3rd
Switch S3, the voltage that accumulator is exported, the process of the upper brachium pontis of a chopped circuit in road is (through the first inductance L1, the two or two pole
Pipe D2, the first switching tube Q1 are the first electric capacity C1 charging) export the first DC voltage afterwards, another road is through the place of DC/DC unit 200
Export the second DC voltage after reason, it should be noted that this process be by control the 9th switching tube Q9, the tenth switching tube Q10,
11st switching tube Q11, twelvemo close the complementary two-by-two conducting of pipe Q12, to produce alternating voltage, transformator T1, the 5th electricity
Holding C5 and the 6th inductance L6 and produce the operating point being in resonance, the voltage that transformator T1 is exported charges to the second electric capacity C2.Point
In two-way, do not produced the first DC voltage and the second direct voltage output to two inputs of inversion unit 200, to produce
Alternating voltage be load supplying.
Fig. 4 is the circuit diagram of UPS module embodiment two of the present invention, compares the embodiment one of the UPS module shown in Fig. 3, this
UPS module in embodiment different only: accumulator accesses mode and the output of DC/DC unit 400 of PFC unit 100
The connected mode of end, other identical part does not repeats, and different parts is the most only described:
The negative terminal of accumulator connects first end of the second inductance L2 by the 3rd switch S3, and the negative terminal of accumulator is also connected with DC/
Second input of DC unit, the anode of accumulator connects center line and the first input end of DC/DC unit, the of DC/DC unit
One outfan connects the first input end of inversion unit, second end of the i.e. the 5th switching tube Q5, the second outfan of DC/DC unit
Connect center line.
In this embodiment, when alternating current power supply exception, the voltage that accumulator is exported, the lower bridge of a chopped circuit in road
First is exported straight after the process (being the second electric capacity C2 charging through the second inductance L2, the 3rd diode D3, second switch pipe Q2) of arm
Stream voltage, another road exports the second DC voltage after the process of DC/DC unit 200, and the voltage that transformator T1 is exported is to the
One electric capacity C1 charging.The first DC voltage and the second direct voltage output is produced respectively to inversion unit 200 in two-way
Two inputs, to produce alternating voltage and as load supplying.
Fig. 5 is the circuit diagram of UPS module embodiment three of the present invention, compares the embodiment one of the UPS module shown in Fig. 3, this
What UPS module in embodiment was different is only, in DC/DC unit, the DC voltage that accumulator exports is converted into alternating voltage
Mode, other identical part does not repeats, and different parts is the most only described:
First illustrating, in this embodiment, the 11st switching tube Q11 and twelvemo close the preferred metal-oxide-semiconductor of pipe Q12,
Now, the second end of switching tube is its drain electrode, and the 3rd end of switching tube is its source electrode.In this DC/DC unit 400, the 11st
The first input end that second end is DC/DC unit of switching tube Q11, it is DC/DC unit that twelvemo closes the 3rd end of pipe Q12
Second input, the 3rd end of the 11st switching tube Q11 and twelvemo are closed second end of pipe Q12 and are connect transformator T1 primary in the lump
The Same Name of Ends of winding, the non-same polarity of transformator T1 armature winding is connected by the 5th electric capacity C5 being in series and the 6th inductance L6
Twelvemo closes the 3rd end of pipe Q12.
Fig. 6 is the circuit diagram of UPS module embodiment four of the present invention, compares the embodiment one of the UPS module shown in Fig. 3, this
What UPS module in embodiment was different is only the implementation of inversion unit 200, and other identical part is not the most done superfluous
State, different parts be the most only described:
First illustrate, in this embodiment, the 5th switching tube Q5 and the 6th switching tube Q6 preferred IGBT pipe, now,
Second end of switching tube is its colelctor electrode, and the 3rd end of switching tube is its emitter stage.In this DC/DC unit 400, the present embodiment
In inversion unit 200 use the half-bridge inversion circuit of I type two level, second termination first electrochemical capacitor of the 5th switching tube Q5
The anode of C1, the negative terminal of the 3rd termination second electrochemical capacitor of the 6th switching tube Q6, the 3rd end and the 6th of the 5th switching tube Q5
Second end of switching tube Q6 connects center line N by the 3rd inductance L3, the 3rd electric capacity C3 in the lump.
It addition, it should also be noted that be only all embodiments of the invention above, be served only for explaining the present invention, not
For limiting the present invention, semi-bridge inversion, full-bridge inverting the inversion unit of other inverting also in protection scope of the present invention
In, such as I type three-level inverter circuit etc..
Fig. 7 is the circuit diagram of UPS module embodiment five of the present invention, compares the embodiment one of the UPS module shown in Fig. 3, this
What UPS module in embodiment was different is only the implementation of charger 300, and other identical part does not repeats,
Different parts is below only described:
First illustrate, in this embodiment, the 13rd switching tube Q13 and the 14th switching tube Q14 preferred IGBT pipe,
Now, the second end of switching tube is its colelctor electrode, and the 3rd end of switching tube is its emitter stage.In this charger 300, the 13rd
Second end of switching tube Q13 connects second end of the 5th switching tube Q5, the 3rd termination the 6th switching tube of the 14th switching tube Q14
It is primary that 3rd end of Q6, the 3rd end of the 13rd switching tube Q13 and second end of the 14th switching tube Q14 meet transformator T2 in the lump
The Same Name of Ends of winding, the non-same polarity of the armature winding of transformator T2 connects center line, the termination of the same name of the secondary windings of transformator T2
The first input end of diode rectifier bridge D8, the non-same polarity of the secondary windings of transformator T2 connects the second of diode rectifier bridge D8
Input, first outfan of diode rectifier bridge D8 connects the anode of the 8th diode D8, the eight or two pole by the 6th inductance L6
The negative electrode of pipe D8 connects the anode of accumulator, and the second output termination center line of diode rectifier bridge D8, the 6th electrochemical capacitor C6 is just
End connects the anode of the 8th diode D8, and the negative terminal of the 6th electrochemical capacitor C6 connects center line.
It addition, the circuit structure of charger 300 does not limit the circuit structure in above-described embodiment, can use Boost,
Buck, Boost-Buck, half-bridge or full-bridge isolation circuit or the combination of the most several circuit, this is also in protection scope of the present invention
In.
It should be noted that, the present invention does not the most limit PFC unit, inversion unit, charhing unit in each embodiment above-mentioned
With the syntagmatic of DC/DC unit, such as, the connected mode of the accumulator in Fig. 4 also can with the DC/DC unit in Fig. 5 and/or
Inversion unit in Fig. 6 and/or the charger in Fig. 7 are combined, and this is also without departing from protection scope of the present invention.
The present invention also constructs a kind of ups system, and this ups system includes at least two UPS module, and each UPS module can
Using such scheme, this at least two UPS module parallel connection is accumulator charging.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies
Change, equivalent, improvement etc., within should be included in scope of the presently claimed invention.
Claims (9)
1. a UPS module, for accumulator is carried out discharge and recharge, the PFC unit that including DC/DC unit and is sequentially connected with, inverse
Becoming unit and charger, described PFC unit includes rectification circuit and the chopper circuit being connected, it is characterised in that in exchange city
During electrical anomaly, the output voltage of described accumulator is converted into the first DC voltage by the first brachium pontis of described chopper circuit, and defeated
Going out the first input end to inversion unit, the output voltage of described accumulator is converted into the second unidirectional current by described DC/DC unit
Pressure, and export the second input to inversion unit, described inversion unit is by described first DC voltage and described second direct current
Voltage inversion is alternating voltage；
Wherein, described first brachium pontis is upper brachium pontis, and the second brachium pontis is lower brachium pontis；Or described first brachium pontis is lower brachium pontis, described
Two brachium pontis are upper brachium pontis；
The upper brachium pontis of described chopper circuit includes the first inductance (L1), the second diode (D2), the first electrochemical capacitor (C1) and anti-
First switching tube (Q1) of parallel diode；The lower brachium pontis of described chopper circuit includes the second inductance (L2), the 3rd diode
(D3), the second switch pipe (Q2) of the second electrochemical capacitor (C2) and anti-paralleled diode；Described chopper circuit also includes that the 3rd opens
Close (S3).
UPS module the most according to claim 1, it is characterised in that the first end of described first inductance (L1) connects described
First outfan of rectification circuit, the second end of described first inductance (L1) connects the anode and the of described second diode (D2)
Second end of one switching tube (Q1), the negative electrode of described second diode (D2) connects anode and the inversion of the first electrochemical capacitor (C1)
The first input end of unit, the negative terminal of the first electrochemical capacitor (C1) and the 3rd end of the first switching tube (Q1) connect center line in the lump,
First end of described second inductance (L2) connects the second outfan of described rectification circuit, the second end of described second inductance (L2)
Connect negative electrode and the 3rd end of second switch pipe (Q2) of described 3rd diode (D3), the anode of described 3rd diode (D3)
Connect the negative terminal of the second electrochemical capacitor (C2) and the second input of described inversion unit, the anode of the second electrochemical capacitor (C2) and
Second end of second switch pipe (Q2) connects center line,
The anode of described accumulator connects the first end of described first inductance (L1) by the 3rd switch (S3), and described accumulator is just
End is also connected with the first input end of described DC/DC unit, and the negative terminal of described accumulator connects described center line and described DC/DC unit
The second input, described DC/DC unit first outfan connect described inversion unit the second input, described DC/DC
Second outfan of unit connects described center line.
UPS module the most according to claim 1, it is characterised in that the first end of described first inductance (L1) connects described
First outfan of rectification circuit, the second end of described first inductance (L1) connects the anode and the of described second diode (D2)
Second end of one switching tube (Q1), the negative electrode of described second diode (D2) connects anode and the inversion of the first electrochemical capacitor (C1)
The first input end of unit, the negative terminal of the first electrochemical capacitor (C1) and the 3rd end of the first switching tube (Q1) connect center line in the lump,
First end of described second inductance (L2) connects the second outfan of described rectification circuit, the second end of described second inductance (L2)
Connect negative electrode and the 3rd end of second switch pipe (Q2) of described 3rd diode (D3), the anode of described 3rd diode (D3)
Connect the negative terminal of the second electrochemical capacitor (C2) and the second input of described inversion unit, the anode of the second electrochemical capacitor (C2) and
Second end of second switch pipe (Q2) connects center line,
The negative terminal of described accumulator connects the first end of described second inductance (L2) by the 3rd switch (S3), bearing of described accumulator
End is also connected with the second input of described DC/DC unit, and the anode of described accumulator connects described center line and described DC/DC unit
First input end, described DC/DC unit first outfan connect described inversion unit first input end, described DC/DC
Second outfan of unit connects described center line.
UPS module the most according to claim 1, it is characterised in that described DC/DC unit includes the of anti-paralleled diode
11 switching tubes (Q11), the twelvemo of anti-paralleled diode close pipe (Q12), the first transformator (T1), the 4th diode
(D4), the 5th diode (D5), the 5th electric capacity (C5) and the 6th inductance (L6), wherein,
The first input end that second end is DC/DC unit of the 11st switching tube (Q11), twelvemo closes the 3rd of pipe (Q12)
End closes the second of pipe (Q12) for the second input of DC/DC unit, the 3rd end of the 11st switching tube (Q11) and twelvemo
End connects the Same Name of Ends of the first transformator (T1) armature winding in the lump, and the non-same polarity of the first transformator (T1) armature winding passes through phase
5th electric capacity (C5) of series connection and the 6th inductance (L6) connect twelvemo and close the 3rd end of pipe (Q12), the first transformator (T1)
The anode of the termination of the same name 4th diode (D4) of the first secondary windings, the first transformator (T1) second subprime winding non-of the same name
Terminate during the anode of the 5th diode (D5), the negative electrode of the 4th diode (D4) and the negative electrode of the 5th diode (D5) connect in the lump
Line, the non-same polarity of the first transformator (T1) the first secondary windings and the Same Name of Ends one of the first transformator (T1) second subprime winding
And connect the input of inversion unit.
UPS module the most according to claim 1, it is characterised in that described DC/DC unit includes the of anti-paralleled diode
Nine switching tubes (Q9), the tenth switching tube (Q10) of anti-paralleled diode, the 11st switching tube (Q11) of anti-paralleled diode, anti-
The twelvemo of parallel diode close pipe (Q12), the first transformator (T1), the 4th diode (D4), the 5th diode (D5), the
Five electric capacity (C5) and the 6th inductance (L6), wherein,
Second end of the 9th switching tube (Q9) and the second end of the 11st switching tube (Q11) connect, and are the first of DC/DC unit
Input, the 3rd end of the tenth switching tube (Q10) and twelvemo close the three-terminal link of pipe (Q12), and are DC/DC unit
Second input, the 3rd end of the 9th switching tube (Q9) and the second end of the tenth switching tube (Q10) in the lump by be in series the
Six inductance (L6) and the 5th electric capacity (C5) connect the non-same polarity of the first transformator (T1) armature winding, the 11st switching tube
(Q11) the 3rd end and twelvemo are closed the second end of pipe (Q12) and are connect the Same Name of Ends of the first transformator (T1) armature winding in the lump,
The anode of the termination of the same name 4th diode (D4) of the first transformator (T1) the first secondary windings, the first transformator (T1) is for the second time
The non-same polarity of level winding connects the anode of the 5th diode (D5), the negative electrode of the 4th diode (D4) and the 5th diode (D5)
Negative electrode connects center line in the lump, the non-same polarity of the first transformator (T1) the first secondary windings and the first transformator (T1) second subprime around
The Same Name of Ends of group connects the input of inversion unit in the lump.
UPS module the most according to claim 1, it is characterised in that described charger includes the 7th of anti-paralleled diode
Switching tube (Q7), the 8th switching tube (Q8) of anti-paralleled diode, the 4th inductance (L4), the 5th inductance (L5), the 6th diode
(D6), the 7th diode (D7) and the 4th electric capacity (C4), wherein, the first of the second termination inversion unit of the 7th switching tube (Q7)
Outfan, the 3rd end of the 7th switching tube (Q7) connects the anode of accumulator by the 4th inductance (L4), and the negative terminal of accumulator connects
Center line, the second outfan of the 3rd termination inversion unit of the 8th switching tube (Q8), the second end of the 8th switching tube (Q8) passes through
5th inductance (L5) connects center line, and the two ends of the 4th electric capacity (C4) connect anode and the negative terminal of accumulator, the 6th diode respectively
(D6) anode connects center line, and the negative electrode of the 6th diode (D6) connects the 3rd end of the 7th switching tube (Q7), the 7th diode
(D7) anode connects the 3rd end of the 8th switching tube (Q8), and the negative electrode of the 7th diode (D7) connects the anode of accumulator.
UPS module the most according to claim 1, it is characterised in that described charger includes the tenth of anti-paralleled diode
Three switching tubes (Q13), the 14th switching tube (Q14) of anti-paralleled diode, the second transformator (T2), diode rectifier bridge,
Six inductance (L6), the 8th diode and the 6th electric capacity (C6), wherein,
Second end of the 13rd switching tube (Q13) connects the first outfan of inversion unit, the 3rd of the 14th switching tube (Q14)
Second outfan of termination inversion unit, the 3rd end of the 13rd switching tube (Q13) and the second end of the 14th switching tube (Q14)
Connect the Same Name of Ends of the second transformator (T2) armature winding in the lump, during the non-same polarity of the armature winding of the second transformator (T2) connects
Line, the first input end of the termination diode rectifier bridge of the same name of the secondary windings of the second transformator (T2), the second transformator (T2)
The non-same polarity of secondary windings connect the second input of diode rectifier bridge, the first outfan of diode rectifier bridge is by the
Six inductance (L6) connect the anode of the 8th diode, and the negative electrode of the 8th diode connects the anode of accumulator, the of diode rectifier bridge
Two output termination center lines, the anode of the 6th electrochemical capacitor (C6) connects the anode of the 8th diode, the 6th electrochemical capacitor (C6)
Negative terminal connects center line.
UPS module the most according to claim 1, it is characterised in that described inversion unit is two level inverter circuits, I type
Three-level inverter circuit or T-shaped three-level inverter circuit.
9. a ups system, the UPS module being in parallel including at least two, it is characterised in that described UPS module is that right is wanted
Seek the UPS module described in any one of 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110076511.8A CN102723744B (en) | 2011-03-29 | A kind of UPS module and ups system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110076511.8A CN102723744B (en) | 2011-03-29 | A kind of UPS module and ups system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102723744A CN102723744A (en) | 2012-10-10 |
| CN102723744B true CN102723744B (en) | 2016-12-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6151234A (en) * | 1999-03-08 | 2000-11-21 | Oldenkamp; Hendrik | Apparatus for converting a direct current into an alternating current |
| CN101064438A (en) * | 2006-04-26 | 2007-10-31 | 台达电子工业股份有限公司 | Uninterruption power supply capable of providing sine wave output AC voltage |
| CN101404417A (en) * | 2007-10-03 | 2009-04-08 | 电盛兰达株式会社 | Uninterruptible power supply |
| CN201336579Y (en) * | 2008-12-19 | 2009-10-28 | 广东工业大学 | Photovoltaic accumulator charging controller with weak-light charging function |
| CN201752075U (en) * | 2010-03-11 | 2011-02-23 | 深圳市盛弘电气有限公司 | Charge-discharge and energy storage circuit |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6151234A (en) * | 1999-03-08 | 2000-11-21 | Oldenkamp; Hendrik | Apparatus for converting a direct current into an alternating current |
| CN101064438A (en) * | 2006-04-26 | 2007-10-31 | 台达电子工业股份有限公司 | Uninterruption power supply capable of providing sine wave output AC voltage |
| CN101404417A (en) * | 2007-10-03 | 2009-04-08 | 电盛兰达株式会社 | Uninterruptible power supply |
| CN201336579Y (en) * | 2008-12-19 | 2009-10-28 | 广东工业大学 | Photovoltaic accumulator charging controller with weak-light charging function |
| CN201752075U (en) * | 2010-03-11 | 2011-02-23 | 深圳市盛弘电气有限公司 | Charge-discharge and energy storage circuit |
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