CN102723744A - UPS module and UPS system - Google Patents
UPS module and UPS system Download PDFInfo
- Publication number
- CN102723744A CN102723744A CN2011100765118A CN201110076511A CN102723744A CN 102723744 A CN102723744 A CN 102723744A CN 2011100765118 A CN2011100765118 A CN 2011100765118A CN 201110076511 A CN201110076511 A CN 201110076511A CN 102723744 A CN102723744 A CN 102723744A
- Authority
- CN
- China
- Prior art keywords
- diode
- connects
- switching tube
- unit
- inductance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention relates to a UPS module and a UPS system. The UPS module comprises a DC/DC unit, and a PFC unit, an inversion unit and a charger, wherein the PFC unit, the inversion unit and the charger are connected in turn. The PFC unit comprises a rectification circuit and a chopper circuit, wherein the rectification circuit and the chopper circuit are connected. The PFC unit is characterized in that, when the AC commercial power is abnormal, a first leg of the chopper circuit transforms an output voltage of a storage battery into a first DC voltage, and outputs to a first input end of the inversion unit, the DC/DC unit transforms the output voltage of the storage battery to a second DC voltage, and outputs to a second input end of the inversion unit, and the inversion unit inverts the first DC voltage and a second DC unit into an AC voltage. The execution of the technology scheme of the invention raises efficiency and saves space and cost.
Description
Technical field
The present invention relates to power electronic technology, more particularly, relate to a kind of UPS module and ups system.
Background technology
UPS (Uninterruptible Power Supply; Uninterrupted power supply) is widely used in a plurality of industries such as electric power, telecommunications, finance, government, manufacturing; It can ensure after having a power failure and work on a period of time; Make the user unlikely, can also eliminate " power pollutions " such as surge on the civil power, instant high-voltage, moment low-voltage, electric wire noise and frequency shift (FS)s because of power failure influences work or obliterated data.
Fig. 1 is the circuit diagram of a kind of UPS module of prior art; This UPS module is used to storage battery and discharges and recharges; And comprise PFC unit 100, inversion unit 200, charger 300 and DC/DC unit 400, wherein, PFC unit 100 comprises rectification circuit and chopper circuit.At electric main just often; Rectification circuit carries out rectification to the ac commercial power voltage; The voltage of the make-to-break ratio of chopper circuit through changing switching tube after with rectification is converted into stable DC voltage; This chopper circuit comprises two brachium pontis, and wherein, the last brachium pontis of chopper circuit is used for the voltage after the positive half cycle rectification of electric main is converted into a stable DC voltage; The following brachium pontis of chopper circuit is used for the voltage after the negative half period rectification of electric main is converted into another stable DC voltage, and these two galvanic currents are the final stable DC voltage of exporting of this chopper circuit after pressing addition.200 pairs of these stable DC voltages of inversion unit carry out inversion, to power to the load and to be that storage battery charges through charger 300.When electric main was unusual, DC/DC unit 400 was converted into direct voltage with the output voltage of storage battery, and inversion unit 200 is an alternating voltage with this direct voltage inversion, and this alternating voltage is an electric.
Yet in this ups system, PFC unit 100 keeps apart with DC/DC unit 400 fully; Though this design of isolating fully can improve the reliability of system, in fact for the situation of a plurality of UPS module parallel connection with shared storage battery; Because DC/DC unit 400 isolates with PFC unit 100 fully, does not have coupling circuit, when electric main is unusual; The required power of DC/DC unit 400 is bigger, therefore must cause the cost of UPS module and space bigger, and efficient is lower.Explain with an example below: the power of supposing the load of this UPS module is P; The power of the last brachium pontis of PFC unit 100 needs P/2 at least, and the power of the following brachium pontis of PFC unit 100 also needs P/2 at least, and the power of DC/DC unit 400 needs P at least; Therefore when design DC/DC unit 400; Inevitable requirement is selected element according to power P, must cause the space of UPS module and cost all very big like this, and efficient is very low.Therefore, this UPS module of isolating fully is not optimum selection from the angle of cost, space and efficient.
Summary of the invention
The technical problem that the present invention will solve is, causes to the isolation fully of the above-mentioned UPS module of prior art that cost is high, the space is big, the low defective of efficient, and the UPS that a kind of cost is low, the space is little, efficient is high is provided module.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of UPS module; Be used for storage battery is discharged and recharged; Comprise the DC/DC unit, reach the PFC unit, inversion unit and the charger that connect successively; Said PFC unit comprises rectification circuit and the chopper circuit that is connected, and when electric main was unusual, first brachium pontis of said chopper circuit was converted into first direct voltage with the output voltage of said storage battery; And export the first input end of inversion unit to; Said DC/DC unit is converted into second direct voltage with the output voltage of said storage battery, and exports second input of inversion unit to, and said inversion unit is an alternating voltage with said first direct voltage and the second direct current unit inversion.
In UPS module of the present invention, said first brachium pontis is last brachium pontis, and said second brachium pontis is following brachium pontis; Or said first brachium pontis is following brachium pontis, and said second brachium pontis is last brachium pontis.
In UPS module of the present invention, the last brachium pontis of said chopper circuit comprises first switching tube of first inductance, second diode, first electrochemical capacitor and inverse parallel diode; The following brachium pontis of said chopper circuit comprises the second switch pipe of second inductance, the 3rd diode, second electrochemical capacitor and inverse parallel diode; Said chopper circuit also comprises switch, wherein,
First end of said first inductance connects first output of said rectification circuit; Second end of said first inductance connects the anode of said second diode and second end of first switching tube; The negative electrode of said second diode connects the anode of first electrochemical capacitor and the first input end of inversion unit; The 3rd end of the negative terminal of first electrochemical capacitor and first switching tube connects center line in the lump; First end of said second inductance connects second output of said rectification circuit, and second end of said second inductance connects the negative electrode of said the 3rd diode and the 3rd end of second switch pipe, and the anode of said the 3rd diode connects the negative terminal of second electrochemical capacitor and second input of said inversion unit; Second end of the anode of second electrochemical capacitor and second switch pipe connects center line
The anode of said storage battery connects first end of said first inductance through switch; The anode of said storage battery also connects the first input end of said DC/DC unit; The negative terminal of said storage battery connects second input of said center line and said DC/DC unit; First output of said DC/DC unit connects second input of said inversion unit, and second output of said DC/DC unit connects said center line.
In UPS module of the present invention, the last brachium pontis of said chopper circuit comprises first switching tube of first inductance, second diode, first electrochemical capacitor and inverse parallel diode; The following brachium pontis of said chopper circuit comprises the second switch pipe of second inductance, the 3rd diode, second electrochemical capacitor and inverse parallel diode; Said chopper circuit also comprises switch, wherein,
First end of said first inductance connects first output of said rectification circuit; Second end of said first inductance connects the anode of said second diode and second end of first switching tube; The negative electrode of said second diode connects the anode of first electrochemical capacitor and the first input end of inversion unit; The 3rd end of the negative terminal of first electrochemical capacitor and first switching tube connects center line in the lump; First end of said second inductance connects second output of said rectification circuit, and second end of said second inductance connects the negative electrode of said the 3rd diode and the 3rd end of second switch pipe, and the anode of said the 3rd diode connects the negative terminal of second electrochemical capacitor and second input of said inversion unit; Second end of the anode of second electrochemical capacitor and second switch pipe connects center line
The negative terminal of said storage battery connects first end of said second inductance through switch; The negative terminal of said storage battery also connects second input of said DC/DC unit; The anode of said storage battery connects the first input end of said center line and said DC/DC unit; First output of said DC/DC unit connects the first input end of said inversion unit, and second output of said DC/DC unit connects said center line.
In UPS module of the present invention, said DC/DC unit comprises the 11 switching tube of inverse parallel diode, twelvemo pass pipe, first transformer, the 4th diode, the 5th diode, the 5th electric capacity and the 6th inductance of inverse parallel diode, wherein,
Second end of the 11 switching tube is the first input end of DC/DC unit; The 3rd end that twelvemo is closed pipe is second input of DC/DC unit; The 3rd end of the 11 switching tube and twelvemo are closed the end of the same name that second end of managing connects the first primary winding in the lump; The non-same polarity of the first primary winding is connected the 3rd end that twelvemo is closed pipe through the 5th electric capacity that is in series with the 6th inductance; The anode of termination of the same name the 4th diode of first transformer, first secondary winding; The non-same polarity of the first transformer second subprime winding connects the anode of the 5th diode, and the negative electrode of the negative electrode of the 4th diode and the 5th diode connects center line in the lump, and the non-same polarity of first transformer, first secondary winding and the end of the same name of the first transformer second subprime winding connect the input of inversion unit in the lump.
In UPS module of the present invention; Said DC/DC unit comprises the 9th switching tube of inverse parallel diode, the tenth switching tube of inverse parallel diode, the 11 switching tube of inverse parallel diode, twelvemo pass pipe, first transformer, the 4th diode, the 5th diode, the 5th electric capacity and the 6th inductance of inverse parallel diode; Wherein
Second end of the 9th switching tube is connected with second end of the 11 switching tube; And be the first input end of DC/DC unit; The 3rd end of the tenth switching tube is connected with the 3rd end that twelvemo is closed pipe; And be second input of DC/DC unit; The 3rd end of the 9th switching tube and second end of the tenth switching tube are connected the non-same polarity of the first primary winding in the lump with the 5th electric capacity through the 6th inductance that is in series; The 3rd end of the 11 switching tube and twelvemo are closed the end of the same name that second end of managing connects the first primary winding in the lump, the anode of termination of the same name the 4th diode of first transformer, first secondary winding, and the non-same polarity of the first transformer second subprime winding connects the anode of the 5th diode; The negative electrode of the negative electrode of the 4th diode and the 5th diode connects center line in the lump, and the non-same polarity of first transformer, first secondary winding and the end of the same name of the first transformer second subprime winding connect the input of inversion unit in the lump.
In UPS module of the present invention, said charger comprises the 7th switching tube of inverse parallel diode, the 8th switching tube, the 4th inductance, the 5th inductance, the 6th diode, the 7th diode and the 4th electric capacity of inverse parallel diode, wherein,
First output of the second termination inversion unit of the 7th switching tube; The 3rd end of the 7th switching tube is through the anode of the 4th inductance connection storage battery, and the negative terminal of storage battery connects center line, second output of the 3rd termination inversion unit of the 8th switching tube; Second end of the 8th switching tube connects center line through the 5th inductance; The two ends of the 4th electric capacity connect the anode and the negative terminal of storage battery respectively, and 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 anode of the 7th diode connects the 3rd end of the 8th switching tube, and the negative electrode of the 7th diode connects the anode of storage battery.
In UPS module of the present invention, said charger comprises the 13 switching tube of inverse parallel diode, the 14 switching tube, second transformer, diode rectifier bridge, the 6th inductance, the 8th diode and the 6th electric capacity of inverse parallel diode, wherein,
Second end of the 13 switching tube connects first output of inversion unit; Second output of the 3rd termination inversion unit of the 14 switching tube; The 3rd end of the 13 switching tube and second end of the 14 switching tube connect the end of the same name of the second primary winding in the lump, and the non-same polarity of the elementary winding of second transformer connects center line, the first input end of the terminating diode rectifier bridge of the same name of second Secondary winding of transformer; The non-same polarity of second Secondary winding of transformer connects second input of diode rectifier bridge; First output of diode rectifier bridge connects the anode of the 8th diode through the 6th inductance, and the negative electrode of the 8th diode connects the anode of storage battery, the second output termination center line of diode rectifier bridge; The anode of the 6th electrochemical capacitor connects the anode of the 8th diode, and the negative terminal of the 6th electrochemical capacitor connects center line.
In UPS module of the present invention, said inversion unit is two level inverter circuits, I type tri-level inversion circuit or T type tri-level inversion circuit.
The present invention also constructs a kind of ups system, comprises at least two UPS modules that are in parallel, and it is characterized in that, said UPS module is above-described UPS module.
The technical scheme of embodiment of the present invention, because when electric main is unusual, can be with the output voltage of storage battery; One the tunnel exports the first input end of inversion unit to after first brachium pontis of chopper circuit is handled; Another road exports second input of inversion unit to after the DC/DC cell processing, inversion unit carries out inversion to power to the load to the voltage of being imported, and adopts the mode of this incomplete isolation; Can reduce the cost and the space of DC/DC unit, and improve efficient.Explain with an example below: the power of supposing the load of this UPS module is P, and the power of the last brachium pontis of PFC unit needs P/2 at least, and the power of the following brachium pontis of PFC unit also needs P/2 at least; And the power of DC/DC unit at least only needs P/2; Therefore when design DC/DC unit, inevitable requirement is selected element according to power P/2, compares of the prior artly to select element according to power P; Needed cost and space all will reduce greatly, and efficient is improved.
In addition, adopt the mode of this incomplete isolation, also can save the transformer (transformer in the charger plays buffer action) in the charger, also can raise the efficiency, save space and cost;
At last, the DC/DC unit adopts the LLC resonant circuit of being made up of transformer, the 5th electric capacity and the 6th inductance, and LLC resonant circuit soft switch technique has reduced loss, has improved efficient.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the circuit diagram of a kind of UPS module of prior art;
Fig. 2 is the logic diagram 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.
Embodiment
As shown in Figure 2, in the logic diagram of UPS module of the present invention, this UPS module comprises DC/DC unit 400, and the PFC unit 100, inversion unit 200 and the charger 300 that connect successively, and wherein, PFC unit 100 comprises rectification circuit and chopper circuit.
This UPS module at electric main just often; Electric main obtains direct voltage through the rectification circuit rectification; This direct voltage is after chopper circuit is handled; To inversion unit 200 output stable DC voltages, inversion unit 200 is an alternating voltage with this stable DC voltage inversion, to reach through charger 300 to charge in batteries to the power supply of load (not shown).
This UPS module is when electric main is unusual; First brachium pontis of chopper circuit is converted into first direct voltage with the output voltage of storage battery; And exporting the first input end of inversion unit 200 to, DC/DC unit 400 is converted into second direct voltage with the output voltage of storage battery, and exports second input of inversion unit 200 to; Inversion unit 200 is an alternating voltage with first direct voltage and the second direct current unit inversion, to power to the load.
Implement the technical scheme of this embodiment, because when electric main is unusual, can be with the output voltage of storage battery; One the tunnel exports the first input end of inversion unit to after first brachium pontis of chopper circuit is handled; Another road exports second input of inversion unit to after the DC/DC cell processing, inversion unit carries out inversion to power to the load to the voltage of being imported, and adopts the mode of this incomplete isolation; Can reduce the cost and the space of DC/DC unit, and improve efficient.Explain with an example below: the power of supposing the load of this UPS module is P, and the power of the last brachium pontis of PFC unit needs P/2 at least, and the power of the following brachium pontis of PFC unit also needs P/2 at least; And the power of DC/DC unit at least only needs P/2; Therefore when design DC/DC unit, inevitable requirement is selected element according to power P/2, compares DC/DC of the prior art unit and selects element according to power P; Needed cost and space all will reduce greatly, and efficient is improved.
First brachium pontis of above-mentioned chopper circuit can be brachium pontis, and the second then corresponding brachium pontis is following brachium pontis; Perhaps, first brachium pontis of above-mentioned chopper circuit can be down brachium pontis, and the second then corresponding brachium pontis is last 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 rectifier bridge D1, stresses chopper circuit, inversion unit 200, charger 300 and DC/DC unit 400 below.
1. chopper circuit
The last brachium pontis of this chopper circuit comprises the first switching tube Q1 of first inductance L 1, the second diode D2, the first electrochemical capacitor C1, inverse parallel diode; The following brachium pontis of chopper circuit comprises the second switch pipe Q2 of second inductance L 2, the 3rd diode D3, the second electrochemical capacitor C2, inverse parallel diode, and this chopper circuit also comprises first switch S 1, second switch S2 and the 3rd switch S 3.
In this embodiment, the preferred IGBT pipe of the first switching tube Q1 and second switch pipe Q2, second end of switching tube is its collector electrode, and the 3rd end of switching tube is its emitter, and first end of switching tube is its gate-drive utmost point, and connects the control circuit (not shown).First end that should be noted that the switching tube among all embodiment of the application all connects control circuit, and this control circuit is used to control the break-make frequency and the make-and-break time of each switching tube.
In this chopper circuit; First end of first inductance L 1 connects first output of rectification circuit through first switch S 1; Second end of first inductance L 1 connects the anode of the second diode D2 and second end of the first switching tube Q1; The negative electrode of the second diode D2 connects the anode of the first electrochemical capacitor C1 and the first input end of inversion unit 200; The 3rd end of the negative terminal of the first electrochemical capacitor C1 and the first switching tube Q1 connects center line N in the lump, and first end of second inductance L 2 is through second output of second switch S2 connection rectification circuit, and second end of second inductance L 2 connects the negative electrode of the 3rd diode D3 and the 3rd end of second switch pipe Q2; The anode of the 3rd diode D3 connects the negative terminal of the second electrochemical capacitor C2 and second input of inversion unit 200; Second end of the anode of the second electrochemical capacitor C2 and second switch pipe Q2 connects center line N, and the anode BAT+ of storage battery connects first end of first inductance L 1 through the 3rd switch S 3, and the negative terminal of storage battery connects center line N.
2. inversion unit 200
This inversion unit 200 is a T type inverter circuit, comprises the 3rd switching tube Q3 of inverse parallel diode, the 4th switching tube Q4 of inverse parallel diode, the 5th switching tube Q5 of inverse parallel diode, the 6th switching tube Q6, the 3rd inductance L 3 and the 3rd capacitor C 3 of inverse parallel diode.In this embodiment, the 3rd switching tube Q3, the 4th switching tube Q4, the 5th switching tube Q5, the preferred IGBT pipe of the 6th switching tube Q6, at this moment, second end of switching tube is its collector electrode, the 3rd end of switching tube is its emitter.Should be noted that; It is the IGBT pipe that the present invention does not limit the 3rd switching tube Q3, the 4th switching tube Q4, the 5th switching tube Q5, the 6th switching tube Q6; Under to the not too high situation of switch frequency requirement, also can select metal-oxide-semiconductor for use, at this moment; Second end of switching tube is its drain electrode, and the 3rd end of switching tube is its source electrode.
In this inversion unit 200; Second end of the 5th switching tube Q5 is the first input end of inversion unit 200; The 3rd end of the 6th switching tube Q6 is second input of inversion unit 200; The 3rd end of the 5th switching tube Q5 connects second end of the 6th switching tube Q6, the 3rd end of the 4th switching tube Q4 and first end of the 3rd inductance L 3; 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, and second end of the 3rd inductance L 3 meets center line N through the 3rd electric capacity.
3. charger 300
This charger 300 comprises the 8th switching tube Q8, the 4th inductance L 4, the 5th inductance L 5, the 6th diode D6, the 7th diode D7 and the 4th capacitor C 4 of the 7th switching tube Q7, the inverse parallel diode of inverse parallel diode.In this embodiment, the 7th switching tube Q7, the preferred IGBT pipe of the 8th switching tube Q8, at this moment, second end of switching tube is its collector electrode, the 3rd end of switching tube is its emitter.Should be noted that the present invention does not limit the 7th switching tube Q7, the 8th switching tube Q8 is the IGBT pipe, under to the not too high situation of switch frequency requirement, also can select metal-oxide-semiconductor for use, at this moment, second end of switching tube is its drain electrode, and the 3rd end of switching tube 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 3rd end of the 7th switching tube Q7 is through the anode BAT+ of the 4th inductance L 4 connection storage batterys, and the negative terminal of storage battery meets center line N, the 3rd end of the 3rd termination the 6th switching tube Q6 of the 8th switching tube Q8; Second end of the 8th switching tube Q8 meets center line N through the 5th inductance L 5; The two ends of the 4th capacitor C 4 connect the anode and the negative terminal of storage battery respectively, and the anode of the 6th diode D6 connects center line N, and the negative electrode of the 6th diode D6 connects the 3rd end of the 7th switching tube Q7; The anode of the 7th diode D7 connects second end of the 8th switching tube Q8, and the negative electrode of the 7th diode D7 connects the anode of storage battery.
4. the DC/DC unit 400
This DC/DC unit 400 comprises the 9th switching tube Q9 of inverse parallel diode, the tenth switching tube Q10 of inverse parallel diode, the 11 switching tube Q11 of inverse parallel diode, twelvemo pass pipe Q12, transformer T1, the 4th diode D4, the 5th diode D5, the 5th capacitor C 5 and the 6th inductance L 6 of inverse parallel diode.In this embodiment, the 9th switching tube Q9, the tenth switching tube Q10, the 11 switching tube Q11, twelvemo are closed the preferred metal-oxide-semiconductor of pipe Q12, and at this moment, second end of switching tube is its drain electrode, and the 3rd end of switching tube is its source electrode.Should be noted that; The present invention does not limit the 9th switching tube Q9, the tenth switching tube Q10, the 11 switching tube Q11, twelvemo, and to close pipe Q12 be metal-oxide-semiconductor, also can select the IGBT pipe for use, at this moment; Second end of switching tube is its collector electrode, and the 3rd end of switching tube is its emitter.
In this DC/DC unit 400; Second end of the 9th switching tube Q9 is connected with second end of the 11 switching tube Q11; And be the first input end of DC/DC unit 400; This first input end connects the anode BAT+ of storage battery; The 3rd end of the tenth switching tube Q10 is connected with the 3rd end that twelvemo is closed pipe Q12, and is second input of DC/DC unit, and this second input connects the negative terminal of storage battery; Second end of the 3rd end of the 9th switching tube Q9 and the tenth switching tube Q10 is connected the non-same polarity of the elementary winding of transformer T1 in the lump with the 5th capacitor C 5 through the 6th inductance L 6 that is in series; The 3rd end of the 11 switching tube Q11 and twelvemo are closed the end of the same name that second end of managing Q12 connects the elementary winding of transformer T1 in the lump, the anode of termination of the same name the 4th diode D4 of transformer T1 first secondary winding, and the non-same polarity of transformer T1 second subprime winding connects the anode of the 5th diode D5; The negative electrode of the negative electrode of the 4th diode D4 and the 5th diode D5 meets center line N in the lump, and the end of the same name of the non-same polarity of transformer T1 first secondary winding and transformer T1 second subprime winding connects the 3rd end of the 6th switching tube Q6 in the lump.
Should be noted that the present invention does not limit the rectifier system of the transformer T1 secondary of DC/DC unit 400, can be the full-wave rectifying circuit described in above-mentioned embodiment, also can be full bridge rectifier.
The operation principle of this UPS module is described below; When electric main just often; First switch S 1 is closed with second switch S2, and the 3rd switch S 3 is broken off, at this moment; Electric main is output AC voltage behind PFC unit 100, inversion unit 200, and this alternating voltage is electric and passes through charger 300 to charge in batteries.
Should be noted that those skilled in the art should be able to know in the electric main realization principle of each unit just often, do not do at this and give unnecessary details.
The situation that electric main is unusual only is described below; At this moment, break off first switch S 1 and second switch S2, closed the 3rd switch S 3; The voltage that storage battery is exported; First direct voltage is exported in one tunnel processing through the last brachium pontis of chopper circuit (is 1 charging of first capacitor C through first inductance L 1, the second diode D2, the first switching tube Q1) back, and second direct voltage is exported on another road after the processing of DC/DC unit 200, should be noted that; This processing is through controlling the complementary in twos conducting of the 9th switching tube Q9, the tenth switching tube Q10, the 11 switching tube Q11, twelvemo pass pipe Q12; To produce alternating voltage, transformer T1, the 5th capacitor C 5 and the 6th inductance L 6 produce the working point that is in resonance, and the voltage that transformer T1 is exported is to 2 chargings of second capacitor C.In two-way, produce two inputs that first direct voltage and second direct voltage export inversion unit 200 to respectively, to produce alternating voltage and to be electric.
Fig. 4 is the circuit diagram of UPS module embodiment two of the present invention; Compare the embodiment one of UPS module shown in Figure 3; UPS module in the present embodiment different only be: storage battery inserts the connected mode of output of mode and the DC/DC unit 400 of PFC unit 100; Other identical part is not done here and is given unnecessary details, and below different portions only is described:
The negative terminal of storage battery connects first end of second inductance L 2 through the 3rd switch S 3; The negative terminal of storage battery also connects second input of DC/DC unit; The anode of storage battery connects the first input end of center line and DC/DC unit; First output of DC/DC unit connects the first input end of inversion unit, i.e. second end of the 5th switching tube Q5, and second output of DC/DC unit connects center line.
In this embodiment; When AC power is unusual; The voltage that storage battery is exported; One tunnel processing (is 2 chargings of second capacitor C through second inductance L 2, the 3rd diode D3, second switch pipe Q2) back output first direct voltage through the following brachium pontis of chopper circuit, second direct voltage is exported on another road after the processing of DC/DC unit 200, and the voltage that transformer T1 is exported charges to first capacitor C 1.In two-way, produce two inputs that first direct voltage and second direct voltage export inversion unit 200 to respectively, to produce alternating voltage and to be electric.
Fig. 5 is the circuit diagram of UPS module embodiment three of the present invention; Compare the embodiment one of UPS module shown in Figure 3; UPS module in the present embodiment different only be the mode that in the DC/DC unit direct voltage of storage battery output is converted into alternating voltage; Other identical part is not done here and is given unnecessary details, and below different portions only is described:
At first explanation is, in this embodiment, the 11 switching tube Q11 and twelvemo are closed the preferred metal-oxide-semiconductor of pipe Q12, and at this moment, 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; Second end of the 11 switching tube Q11 is the first input end of DC/DC unit; The 3rd end that twelvemo is closed pipe Q12 is second input of DC/DC unit; The 3rd end of the 11 switching tube Q11 and twelvemo are closed the end of the same name that second end of managing Q12 connects the elementary winding of transformer T1 in the lump, and the non-same polarity of the elementary winding of transformer T1 is connected the 3rd end that twelvemo is closed pipe Q12 through the 5th capacitor C 5 that is in series with the 6th inductance L 6.
Fig. 6 is the circuit diagram of UPS module embodiment four of the present invention; Compare the embodiment one of UPS module shown in Figure 3; UPS module in the present embodiment different only be the implementation of inversion unit 200, other identical part is not done here and is given unnecessary details, and below different portions only is described:
At first explanation is, in this embodiment, the preferred IGBT pipe of the 5th switching tube Q5 and the 6th switching tube Q6, at this moment, second end of switching tube is its collector electrode, the 3rd end of switching tube is its emitter.In this DC/DC unit 400; Inversion unit 200 in the present embodiment adopts the half-bridge inversion circuit of I type two level; The anode of second termination, the first electrochemical capacitor C1 of the 5th switching tube Q5; The negative terminal of the 3rd termination second electrochemical capacitor of the 6th switching tube Q6, second end of the 3rd end of the 5th switching tube Q5 and the 6th switching tube Q6 are connected center line N through the 3rd inductance L 3, the 3rd capacitor C 3 in the lump.
In addition, should be noted that also above all only is embodiments of the invention; Only be used to explain the present invention; And being not used in qualification the present invention, the inversion unit of other inverting of semi-bridge inversion, full-bridge inverting is also in protection scope of the present invention, like I type tri-level inversion circuit etc.
Fig. 7 is the circuit diagram of UPS module embodiment five of the present invention; Compare the embodiment one of UPS module shown in Figure 3; UPS module in the present embodiment different only be the implementation of charger 300, other identical part is not done here and is given unnecessary details, and below different portions only is described:
At first explanation is, in this embodiment, the preferred IGBT pipe of the 13 switching tube Q13 and the 14 switching tube Q14, at this moment, second end of switching tube is its collector electrode, the 3rd end of switching tube is its emitter.In this charger 300; Second end of the 13 switching tube Q13 connects second end of the 5th switching tube Q5; The 3rd end of the 3rd termination the 6th switching tube Q6 of the 14 switching tube Q14; The 3rd end of the 13 switching tube Q13 and second end of the 14 switching tube Q14 connect the end of the same name of the elementary winding of transformer T2 in the lump, and the non-same polarity of the elementary winding of transformer T2 connects center line, the first input end of the terminating diode rectifier bridge D8 of the same name of the secondary winding of transformer T2; The non-same polarity of the secondary winding of transformer T2 connects second input of diode rectifier bridge D8; First output of diode rectifier bridge D8 connects the anode of the 8th diode D8 through the 6th inductance L 6, and the negative electrode of the 8th diode D8 connects the anode of storage battery, the second output termination center line of diode rectifier bridge D8; The anode of the 6th electrochemical capacitor C6 connects the anode of the 8th diode D8, and the negative terminal of the 6th electrochemical capacitor C6 connects center line.
In addition, the circuit structure of charger 300 does not limit the circuit structure in the foregoing description, can adopt Boost, Buck, Boost-Buck, half-bridge or full-bridge buffer circuit or the wherein combination of several kinds of circuit, and this is also in protection scope of the present invention.
Should be noted that; The present invention does not limit the syntagmatic of PFC unit, inversion unit, charhing unit and DC/DC unit among above-mentioned each embodiment yet; For example; The connected mode of the storage battery among Fig. 4 also can be combined with DC/DC unit among Fig. 5 and/or the inversion unit among Fig. 6 and/or the charger among Fig. 7, and this does not break away from protection scope of the present invention yet.
The present invention also constructs a kind of ups system, and this ups system comprises at least two UPS modules, and each UPS module all can adopt such scheme, and these at least two UPS module parallel connections are charge in batteries.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (10)
1. a UPS module is used for storage battery is discharged and recharged, and comprises the DC/DC unit, reaches the PFC unit, inversion unit and the charger that connect successively; Said PFC unit comprises rectification circuit and the chopper circuit that is connected; It is characterized in that when electric main was unusual, first brachium pontis of said chopper circuit was converted into first direct voltage with the output voltage of said storage battery; And export the first input end of inversion unit to; Said DC/DC unit is converted into second direct voltage with the output voltage of said storage battery, and exports second input of inversion unit to, and said inversion unit is an alternating voltage with said first direct voltage and the second direct current unit inversion.
2. UPS module according to claim 1 is characterized in that,
Said first brachium pontis is last brachium pontis, and said second brachium pontis is following brachium pontis; Or
Said first brachium pontis is following brachium pontis, and said second brachium pontis is last brachium pontis.
3. UPS module according to claim 2 is characterized in that, the last brachium pontis of said chopper circuit comprises first switching tube (Q1) of first inductance (L1), second diode (D2), first electrochemical capacitor (C1) and inverse parallel diode; The following brachium pontis of said chopper circuit comprises the second switch pipe (Q2) of second inductance (L2), the 3rd diode (D3), second electrochemical capacitor (C2) and inverse parallel diode; Said chopper circuit also comprises switch (S3), wherein,
First end of said first inductance (L1) connects first output of said rectification circuit; Second end of said first inductance (L1) connects the anode of said second diode (D2) and second end of first switching tube (Q1); The negative electrode of said second diode (D2) connects the anode of first electrochemical capacitor (C1) and the first input end of inversion unit; The 3rd end of the negative terminal of first electrochemical capacitor (C1) and first switching tube (Q1) connects center line in the lump; First end of said second inductance (L2) connects second output of said rectification circuit; Second end of said second inductance (L2) connects the negative electrode of said the 3rd diode (D3) and the 3rd end of second switch pipe (Q2); The anode of said the 3rd diode (D3) connects the negative terminal of second electrochemical capacitor (C2) and second input of said inversion unit, and second end of the anode of second electrochemical capacitor (C2) and second switch pipe (Q2) connects center line
The anode of said storage battery connects first end of said first inductance (L1) through switch (S3); The anode of said storage battery also connects the first input end of said DC/DC unit; The negative terminal of said storage battery connects second input of said center line and said DC/DC unit; First output of said DC/DC unit connects second input of said inversion unit, and second output of said DC/DC unit connects said center line.
4. UPS module according to claim 2 is characterized in that, the last brachium pontis of said chopper circuit comprises: first switching tube (Q1) of first inductance (L1), second diode (D2), first electrochemical capacitor (C1) and inverse parallel diode; The following brachium pontis of said chopper circuit comprises: the second switch pipe (Q2) of second inductance (L2), the 3rd diode (D3), second electrochemical capacitor (C2) and inverse parallel diode; Said chopper circuit also comprises switch (S3), wherein,
First end of said first inductance (L1) connects first output of said rectification circuit; Second end of said first inductance (L1) connects the anode of said second diode (D2) and second end of first switching tube (Q1); The negative electrode of said second diode (D2) connects the anode of first electrochemical capacitor (C1) and the first input end of inversion unit; The 3rd end of the negative terminal of first electrochemical capacitor (C1) and first switching tube (Q1) connects center line in the lump; First end of said second inductance (L2) connects second output of said rectification circuit; Second end of said second inductance (L2) connects the negative electrode of said the 3rd diode (D3) and the 3rd end of second switch pipe (Q2); The anode of said the 3rd diode (D3) connects the negative terminal of second electrochemical capacitor (C2) and second input of said inversion unit, and second end of the anode of second electrochemical capacitor (C2) and second switch pipe (Q2) connects center line
The negative terminal of said storage battery connects first end of said second inductance (L2) through switch (S3); The negative terminal of said storage battery also connects second input of said DC/DC unit; The anode of said storage battery connects the first input end of said center line and said DC/DC unit; First output of said DC/DC unit connects the first input end of said inversion unit, and second output of said DC/DC unit connects said center line.
5. UPS module according to claim 1; It is characterized in that; Said DC/DC unit comprises the 11 switching tube (Q11) of inverse parallel diode, twelvemo pass pipe (Q12), first transformer (T1), the 4th diode (D4), the 5th diode (D5), the 5th electric capacity (C5) and the 6th inductance (L6) of inverse parallel diode; Wherein
Second end of the 11 switching tube (Q11) is the first input end of DC/DC unit; The 3rd end that twelvemo is closed pipe (Q12) is second input of DC/DC unit; The 3rd end of the 11 switching tube (Q11) and twelvemo are closed the end of the same name that second end of managing (Q12) connects the elementary winding of first transformer (T1) in the lump; The non-same polarity of the elementary winding of first transformer (T1) is connected the 3rd end that twelvemo is closed pipe (Q12) through the 5th electric capacity (C5) that is in series with the 6th inductance (L6); The anode of termination of the same name the 4th diode (D4) of first transformer (T1), first secondary winding; The non-same polarity of first transformer (T1) second subprime winding connects the anode of the 5th diode (D5); The negative electrode of the negative electrode of the 4th diode (D4) and the 5th diode (D5) connects center line in the lump, and the end of the same name of the non-same polarity of first transformer (T1), first secondary winding and first transformer (T1) second subprime winding connects the input of inversion unit in the lump.
6. UPS module according to claim 1; It is characterized in that; Said DC/DC unit comprises the 9th switching tube (Q9) of inverse parallel diode, the tenth switching tube (Q10) of inverse parallel diode, the 11 switching tube (Q11) of inverse parallel diode, twelvemo pass pipe (Q12), first transformer (T1), the 4th diode (D4), the 5th diode (D5), the 5th electric capacity (C5) and the 6th inductance (L6) of inverse parallel diode; Wherein
Second end of the 9th switching tube (Q9) is connected with second end of the 11 switching tube (Q11); And be the first input end of DC/DC unit; The 3rd end of the tenth switching tube (Q10) is connected with the 3rd end that twelvemo is closed pipe (Q12); And be second input of DC/DC unit; Second end of the 3rd end of the 9th switching tube (Q9) and the tenth switching tube (Q10) is connected the non-same polarity of the elementary winding of first transformer (T1) in the lump with the 5th electric capacity (C5) through the 6th inductance (L6) that is in series; The 3rd end of the 11 switching tube (Q11) and twelvemo are closed the end of the same name that second end of managing (Q12) connects the elementary winding of first transformer (T1) in the lump; The anode of termination of the same name the 4th diode (D4) of first transformer (T1), first secondary winding; The non-same polarity of first transformer (T1) second subprime winding connects the anode of the 5th diode (D5), and the negative electrode of the negative electrode of the 4th diode (D4) and the 5th diode (D5) connects center line in the lump, and the end of the same name of the non-same polarity of first transformer (T1), first secondary winding and first transformer (T1) second subprime winding connects the input of inversion unit in the lump.
7. UPS module according to claim 1; It is characterized in that; Said charger comprises the 7th switching tube (Q7) of inverse parallel diode, the 8th switching tube (Q8), the 4th inductance (L4), the 5th inductance (L5), the 6th diode (D6), the 7th diode (D7) and the 4th electric capacity (C4) of inverse parallel diode; Wherein
First output of the second termination inversion unit of the 7th switching tube (Q7); The 3rd end of the 7th switching tube (Q7) connects the anode of storage battery through the 4th inductance (L4); The negative terminal of storage battery connects center line; Second output of the 3rd termination inversion unit of the 8th switching tube (Q8), second end of the 8th switching tube (Q8) connects center line through the 5th inductance (L5), and the two ends of the 4th electric capacity (C4) connect the anode and the negative terminal of storage battery respectively; The anode of the 6th diode (D6) connects center line; The negative electrode of the 6th diode (D6) connects the 3rd end of the 7th switching tube (Q7), and the anode of the 7th diode (D7) connects the 3rd end of the 8th switching tube (Q8), and the negative electrode of the 7th diode (D7) connects the anode of storage battery.
8. UPS module according to claim 1; It is characterized in that; Said charger comprises the 13 switching tube (Q13) of inverse parallel diode, the 14 switching tube (Q14), second transformer (T2), diode rectifier bridge (D8), the 6th inductance (L6), the 8th diode (D8) and the 6th electric capacity (C6) of inverse parallel diode; Wherein
Second end of the 13 switching tube (Q13) connects first output of inversion unit; Second output of the 3rd termination inversion unit of the 14 switching tube (Q14); The 3rd end of the 13 switching tube (Q13) and second end of the 14 switching tube (Q14) connect the end of the same name of the elementary winding of second transformer (T2) in the lump; The non-same polarity of the elementary winding of second transformer (T2) connects center line; The first input end of the terminating diode rectifier bridge of the same name (D8) of the secondary winding of second transformer (T2); The non-same polarity of the secondary winding of second transformer (T2) connects second input of diode rectifier bridge (D8); First output of diode rectifier bridge (D8) connects the anode of the 8th diode (D8) through the 6th inductance (L6), and the negative electrode of the 8th diode (D8) connects the anode of storage battery, the second output termination center line of diode rectifier bridge (D8); The anode of the 6th electrochemical capacitor (C6) connects the anode of the 8th diode (D8), and the negative terminal of the 6th electrochemical capacitor (C6) connects center line.
9. UPS module according to claim 1 is characterized in that, said inversion unit is two level inverter circuits, I type tri-level inversion circuit or T type tri-level inversion circuit.
10. a ups system comprises at least two UPS modules that are in parallel, and it is characterized in that, said UPS module is each described UPS module of claim 1-9.
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 true CN102723744A (en) | 2012-10-10 |
| CN102723744B CN102723744B (en) | 2016-12-14 |
Family
ID=
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753140A (en) * | 2015-04-07 | 2015-07-01 | 佛山市柏克新能科技股份有限公司 | Double-T-shaped three-level online UPS (uninterrupted power supply) |
| TWI504103B (en) * | 2013-03-11 | 2015-10-11 | Univ Yuan Ze | Hybrid power conversion system |
| CN107332341A (en) * | 2017-07-27 | 2017-11-07 | 深圳市泰昂能源科技股份有限公司 | Direct current ups power device and system |
| CN107769538A (en) * | 2017-12-07 | 2018-03-06 | 深圳市华星光电技术有限公司 | Power factor correction circuit and circuit of reversed excitation |
| CN111817548A (en) * | 2020-07-28 | 2020-10-23 | 广东汇芯半导体有限公司 | Intelligent power module |
| CN112564265A (en) * | 2020-12-10 | 2021-03-26 | 深圳市瑞能时代科技有限公司 | Power supply switching circuit |
| CN112821774A (en) * | 2021-02-02 | 2021-05-18 | 深圳弘德智能有限公司 | Converter |
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 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI504103B (en) * | 2013-03-11 | 2015-10-11 | Univ Yuan Ze | Hybrid power conversion system |
| CN104753140A (en) * | 2015-04-07 | 2015-07-01 | 佛山市柏克新能科技股份有限公司 | Double-T-shaped three-level online UPS (uninterrupted power supply) |
| CN107332341A (en) * | 2017-07-27 | 2017-11-07 | 深圳市泰昂能源科技股份有限公司 | Direct current ups power device and system |
| CN107769538A (en) * | 2017-12-07 | 2018-03-06 | 深圳市华星光电技术有限公司 | Power factor correction circuit and circuit of reversed excitation |
| CN111817548A (en) * | 2020-07-28 | 2020-10-23 | 广东汇芯半导体有限公司 | Intelligent power module |
| CN111817548B (en) * | 2020-07-28 | 2024-03-22 | 广东汇芯半导体有限公司 | Intelligent power module |
| CN112564265A (en) * | 2020-12-10 | 2021-03-26 | 深圳市瑞能时代科技有限公司 | Power supply switching circuit |
| CN112821774A (en) * | 2021-02-02 | 2021-05-18 | 深圳弘德智能有限公司 | Converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103208855B (en) | A kind of uninterrupted power source and DC-DC converter | |
| CN100578888C (en) | Uninterruptible power supply | |
| CN103187785B (en) | A kind of UPS module and ups system | |
| CN101789690B (en) | UPS preceding stage electric volt increase station | |
| CN101572429B (en) | UPS system | |
| CN208386212U (en) | A kind of uninterruptible power supply | |
| EP3783784A2 (en) | Balancing multilevel dc-dc converter apparatus | |
| CN101685973B (en) | Uninterrupted power supply | |
| CN108768176B (en) | Three-level Boost circuit and inverter system | |
| KR20220029522A (en) | Single stage ac-dc converter | |
| CN203278632U (en) | Uninterrupted power supply (UPS) | |
| CN109088462A (en) | A kind of active equalization of battery device containing AC module | |
| CN113547945A (en) | Immittance network-based battery charging device with voltage-sharing function and method | |
| CN103187788A (en) | Nematic powered UPS module and UPS system | |
| CN101814762B (en) | UPS power supply | |
| CN102723744A (en) | UPS module and UPS system | |
| CN116317036B (en) | Battery system and power supply device | |
| CN216751225U (en) | Charging and discharging circuit and charging and discharging equipment | |
| CN215772576U (en) | Battery device and power supply system | |
| CN102723744B (en) | A kind of UPS module and ups system | |
| CN215498336U (en) | Energy storage circuit | |
| CN216451290U (en) | Bidirectional circuit and inverter | |
| CN116054355B (en) | Energy storage system and power grid system thereof | |
| CN219415136U (en) | Power supply control circuit of multi-channel switching power supply | |
| CN219938014U (en) | Energy storage module equalizing circuit and power supply device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Columbo Road, Ohio, Dearborn 1050 Patentee after: Vitamin Corporation Address before: Columbo Road, Ohio, Dearborn 1050 Patentee before: Libot Inc. |