CN102710007A - Double-power-supply system based on balance bridge arm - Google Patents
Double-power-supply system based on balance bridge arm Download PDFInfo
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- CN102710007A CN102710007A CN2012101554265A CN201210155426A CN102710007A CN 102710007 A CN102710007 A CN 102710007A CN 2012101554265 A CN2012101554265 A CN 2012101554265A CN 201210155426 A CN201210155426 A CN 201210155426A CN 102710007 A CN102710007 A CN 102710007A
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Abstract
The invention provides a double-power-supply system based on a balance bridge arm, which comprises an alternating current power supply, a rectification module, a storage cell and a balance module, wherein the alternating current power supply is used for realizing alternating current power supply; the rectification module is connected with the alternating current power supply, and comprises an alternating current rectification unit, a direct current rectification unit and a first switch unit; the alternating current rectification unit and the direct current rectification unit multiplex a rectification line; the alternating current rectification and the direct current rectification are switched by the first switch unit; the storage cell is used for realizing direct current power supply and is connected with the rectification module; the balance module is respectively connected with the rectification module and the storage cell; the balance module comprises a balance unit, a charging unit and a second switch unit, wherein the second switch unit is a bidirectional switching unit; the balance unit and the charging unit multiplex the balance line; and switching and positive and negative bus balance are realized by the bidirectional switching unit. According to the double-power-supply system, the balance line and the charging line are multiplexed to realize positive and negative bus balance; and the double-power-supply system has the advantages of small volume, low cost and high performance and reliability.
Description
Technical field
The present invention relates to a kind of electric power system of uninterrupted power supply, relate in particular to a kind of dual power supply system based on the balance brachium pontis.
Background technology
At any time electric equipment popularize the propelling with extensive use, it is particularly important that the application of uninterrupted power supply also seems, and in duplicate supply input monocell commutation system, the equilibrium problem of positive and negative busbar is that the industry technology personnel must not irrespective problem always; The most existing related system is just given up this requirement in order to save cost and to reduce volume in the design phase, if but not doing the positive and negative busbar balanced design all can cause certain influence to machine performance and reliability, reduce whole quality.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of volume little, the dual power supply system based on the balance brachium pontis of positive and negative busbar balance.
To this, the present invention provides a kind of dual power supply system based on the balance brachium pontis, comprising:
Be used to realize the AC power of Alternating Current Power Supply;
The rectification module that is connected with AC power, said rectification module comprise AC rectification unit, direct current rectification unit and first switch element; Said AC rectification unit and the multiplexing rectifying circuit of direct current rectification unit, and pass through the switching that first switch element is realized AC rectification and direct current rectification;
Be used to realize the storage battery of direct current supply, said storage battery is connected with rectification module; And,
The balance module that is connected with storage battery with rectification module respectively, said balance module comprises balancing unit, charhing unit and second switch unit, said second switch unit is two-way diverter switch; The multiplexing balanced circuit of said balancing unit and charhing unit, and through two-way diverter switch realization switching and positive and negative busbar balance.
Wherein, said rectifying circuit comprises the transistor or the FET of mutual serial connection, and the mid point of rectifying circuit is connected with inductance; Said first switch element comprises that alternating-current switch that is connected with AC power and the dc switch that is connected with storage battery, said alternating-current switch and dc switch are respectively applied for the break-make of control ac circuit and DC loop; The interchange input of said AC rectification unit and the direct current of direct current rectification unit are imported shared rectifying circuit, exchange the input of input and direct current and realize switching through first switch element; When exchanging input, the storage battery loop is broken off, and forms half-bridge circuit realization rectification and boosts; The storage battery anode is connected to the rectification input of rectification module through first switch, and the storage battery negative terminal is connected to negative busbar, during the storage battery input, forms booster circuit, realizes the rectification of boosting to positive and negative busbar; Thus; Constituted and exchanged the multiplexing of input rectifying and direct current input rectification circuit; Promptly constituted the multiplexing of AC rectification and direct current rectification, the AC rectification path when said interchange input rectifying is the AC power conducting, the direct current rectification path when said direct current input rectifying is the storage battery conducting.
Said balanced circuit comprises the transistor or the FET of mutual serial connection, and promptly said balance brachium pontis is the transistor or the FET of serial connection each other, is used to realize the bridge arm balance of electric bridge; The balance brachium pontis mid point of balanced circuit is connected with the second switch unit; The multiplexing balanced circuit of said balancing unit and charhing unit; The multiplexing of this balanced circuit switched through the second switch unit, and this circuit is realized charge function when exchanging input, when direct current is imported, realizes the balance of positive and negative busbar; In the circuit of said charhing unit, balance brachium pontis mid point is connected to the storage battery anode through the two-way diverter switch and the inductance of second switch unit, forms the step-down circuit to charge in batteries; Said balanced circuit is preferably in the balance brachium pontis; Its balance brachium pontis mid point is connected to the positive and negative busbar mid point through two-way diverter switch and inductance; The present invention is through the switch on and off up and down of the two-way diverter switch of Current Control balance brachium pontis of sampling positive and negative busbar voltage and balance brachium pontis mid point; Realize the positive and negative busbar balance, reach charging circuit multiplexing of balanced circuit and charhing unit.
Compared with prior art, in the balance module of the present invention, the charging circuit of balanced circuit and charhing unit is multiplexing; Different with sequential at the different mode period control method, said different mode is interchange input pattern or direct current input pattern, and then realizes the balance of positive and negative busbar; Storage battery and AC power alternately guarantee dual power supply, and on this basis, the rectifying circuit of said interchange input rectifying and direct current input rectifying is also multiplexing; And then realized the dual power supply system based on the balance brachium pontis of positive and negative busbar balance; Reduce its volume, save cost, can also guarantee the performance and the reliability of dual power supply system simultaneously.
Further improvement of the present invention is; Said rectifying circuit is the brachium pontis rectification; Said first switch element is connected to the mid point of brachium pontis rectification through inductance, and said brachium pontis rectification comprises the transistor of serial connection or the FET of parallelly connected discrete diode, or utilizes the diode in the transistor body.Preferably; The transistor of said brachium pontis rectification is an insulated gate bipolar transistor; Said insulated gate bipolar transistor is IGBT (Insulated Gate Bipolar Transistor), the compound full-control type voltage driven type power electronic device of being made up of BJT (double pole triode) and MOS (insulating gate type field effect tube).
Said brachium pontis rectification comprises the transistor or the FET of serial connection, and promptly the IGBT or the MOSFET of serial connection when using MOSFET, need parallelly connected discrete diode, and said discrete diode is the discrete power device, has comprised semiconductor diode; Said first switch element is connected to the mid point of brachium pontis rectification through inductance, promptly exchanges the input of input or direct current and is connected to the mid point of two transistors or FET through first switch element, has constituted good AC rectification and the direct current rectification is multiplexing.Compared with prior art, the present invention just can pass through same rectifying circuit and realize exchanging the multiplexing of input rectifying and direct current input rectifying as long as pass through the switching of first switch and then select to exchange input and the direct current input, reduces the volume of dual power supply system.
Further improvement of the present invention is that said balanced circuit is the balance brachium pontis, and said balance brachium pontis comprises the transistor of serial connection or the FET of parallelly connected discrete diode.Preferably, the transistor of said balance brachium pontis is an insulated gate bipolar transistor.
Further improvement of the present invention is that said rectification module comprises 3 groups of rectifying circuits, the shared storage battery of said rectifying circuit, and be connected to corresponding AC power respectively.
Said 3 groups of rectifying circuit correspondences are provided with 3 group of first switch element, and shared storage battery; Said AC power connects with corresponding rectifying circuit through first switch element respectively, forms the dual power supply system of 3 tunnel inputs.Said dual power supply system can carry out the selection of multichannel incoming line according to the actual requirements, and the way of incoming line is variable, and the way of output also can be selected according to the actual requirements, and the occupation mode flexibility and changeability connects simple.
Further improvement of the present invention is; Also comprise the 3rd switch element that is used to connect storage battery and balance module; The anode of said storage battery is imported through the rectification that first switch element is connected to rectification module, and the anode of said storage battery is connected to the mid point of balance brachium pontis through the 3rd switch element and second switch unit.
More particularly, the anode of said storage battery is connected to the 3rd switch element through inductance, and the 3rd switch element is connected with the second switch unit; To switch the mid point that is connected to the balance brachium pontis through bidirectional switch; The realization storage battery is connected with balance module, is convenient to import under the pattern of switching with exchanging in the direct current input, realizes the multiplexing of rectifying circuit and balanced circuit; Reduce volume, guarantee the performance and the reliability of dual power supply system.
Further improvement of the present invention is, said first switch element and the 3rd switch element be in relay, controllable silicon and the contactor any one.
Further improvement of the present invention is that said first switch element and the 3rd switch element are single-way switch or bidirectional switch.
For guaranteeing the normal conversion work of Alternating Current Power Supply and direct current supply; Simultaneously according to different demands such as power and change-over times; Wherein first switch element and the 3rd switch element comprise in relay, controllable silicon and the contactor any one, and can be unidirectional or bidirectional switchs, like one-way SCR; During simultaneously for assurance direct current supply, need to cut off exchanging input, according to the demand of power and switching time, the alternating-current switch in first switch element also can correspondingly be selected different schemes for use, includes but not limited to relay, controllable silicon and contactor; Said two-way diverter switch can be selected two-way diverter switches such as relay, controllable silicon and contactor for use.
Preferably; Said AC power anode is connected to an end of the inductance of rectification module through bidirectional triode thyristor; Said storage battery anode is connected to the same end of the inductance of rectification module through one-way SCR, said storage battery negative terminal is connected to rectification module and balance module; The inductance other end of said rectification module is connected to the transistorized mid point of two serial connections, and the electric capacity of two serial connections of transistor AND gate of said two serial connections is in parallel, the electric capacity neutral earthing of these two serial connections; The electric capacity mid point of said two serial connections is connected to an input of two-way diverter switch through the inductance of balance module; Another input that inductance and the one-way SCR of said storage battery anode through balance module is connected to two-way diverter switch, the output of said two-way diverter switch is connected to the transistorized mid point of two serial connections; The transistor parallel connection of two other serial connection of transistor AND gate of two serial connections of said balance module, these two the transistor mid points parallelly connected with balance module are realized inversion output through inductance.
Preferably; Said AC power anode is connected to an end of the inductance of rectification module through bidirectional triode thyristor; Said storage battery anode is connected to the same end of the inductance of rectification module through one-way SCR, said storage battery negative terminal is connected to rectification module and balance module; The inductance other end of said rectification module is connected to the mid point of the FET of two serial connections, and the FET of said two serial connections is in parallel with two electric capacity that are connected in series, the electric capacity neutral earthing of these two serial connections; The electric capacity mid point of said two serial connections is connected to an input of two-way diverter switch through the inductance of balance module; Another input that inductance and the one-way SCR of said storage battery anode through balance module is connected to two-way diverter switch, the output of said two-way diverter switch is connected to the mid point of the FET of two serial connections; The FET parallel connection that the FET of two serial connections of said balance module is connected in series with two other, these two the FET mid points parallelly connected with balance module are realized inversion output through inductance.
Beneficial effect of the present invention is that in the balance module, the balanced circuit of balancing unit and the charging circuit of charhing unit are multiplexing; And the balance of realization positive and negative busbar, storage battery and AC power alternately guarantee dual power supply, on this basis; The rectifying circuit of said interchange input rectifying and direct current input rectifying is also multiplexing; And then realized the balance of positive and negative busbar having effectively reduced number of elements and equipment volume, the components and parts reusability is high; Reduce cost, can also guarantee the performance and the reliability of dual power supply system simultaneously.
Description of drawings
Fig. 1 is the operation principle sketch map of the embodiment of the invention 1;
Fig. 2 is the interchange input pattern operation principle sketch map of the embodiment of the invention 1;
Fig. 3 is the direct current input pattern operation principle sketch map of the embodiment of the invention 1;
Fig. 4 is the operation principle sketch map that the province of the embodiment of the invention 2 removes the inductance of balance brachium pontis;
Fig. 5 is the balance brachium pontis of the embodiment of the invention 2 and the operation principle sketch map of the shared inductance of charging circuit;
Fig. 6 is the operation principle sketch map that three of the embodiment of the invention 3 is advanced three dual power supply systems that go out;
Fig. 7 is the operation principle sketch map that three of the embodiment of the invention 3 is advanced the dual power supply system that singly goes out.
Embodiment
Below in conjunction with accompanying drawing, more excellent embodiment of the present invention is done further detailed description.
Embodiment 1:
To shown in Figure 3, this example provides a kind of dual power supply system based on the balance brachium pontis, comprising like Fig. 1:
Be used to realize the AC power 1 of Alternating Current Power Supply;
The rectification module 2 that is connected with AC power 1, said rectification module 2 comprise AC rectification unit 201, direct current rectification unit 202 and first switch element 203; Said AC rectification unit 201 and direct current rectification unit 202 multiplexing rectifying circuits, and through first switch element, 203 realization AC rectifications and direct current rectification switching;
Be used to realize the storage battery 3 of direct current supply, said storage battery 3 is connected with rectification module 2;
The balance module 4 that is connected with storage battery 3 with rectification module 2 respectively, said balance module 4 comprises balancing unit 401, charhing unit 402 and second switch unit 403, said second switch unit 403 is two-way diverter switch; Said balancing unit 401 and charhing unit 402 multiplexing balanced circuits, and through two-way diverter switch realization switching and positive and negative busbar balance.
Wherein, said rectifying circuit comprises the transistor or the FET of mutual serial connection, and the mid point of rectifying circuit is connected with inductance; Said first switch element 203 comprises that alternating-current switch that is connected with AC power 1 and the dc switch that is connected with storage battery 3, said alternating-current switch and dc switch are respectively applied for the break-make of control ac circuit and DC loop; The interchange input of said AC rectification unit 201 and the direct current of direct current rectification unit 202 are imported shared rectifying circuit, exchange the input of input and direct current and realize switching through first switch element 203; When exchanging input, storage battery 3 loops are broken off, and form half-bridge circuit realization rectification and boost; Storage battery 3 anodes are connected to the rectification input of rectification module 2 through first switch, and storage battery 3 negative terminals are connected to negative busbar, during storage battery 3 inputs, form booster circuit, realize the rectification of boosting to positive and negative busbar; Thus, constituted the multiplexing of interchange input rectifying and direct current input rectification circuit, the AC rectification path when said interchange input rectifying is AC power 1 conducting, the direct current rectification path when said direct current input rectifying is storage battery 3 conductings.
Said balanced circuit comprises the transistor or the FET of mutual serial connection; The mid point of balanced circuit is connected with second switch unit 403; Said balancing unit 401 and charhing unit 402 multiplexing balanced circuits; The multiplexing of this balanced circuit switched through second switch unit 403, and this circuit is realized charge function when exchanging input, when direct current is imported, realizes the balance of positive and negative busbar; In the circuit of said charhing unit 402, balance brachium pontis mid point is connected to storage battery 3 anodes through the two-way diverter switch and the inductance of second switch unit 403, forms the step-down circuit to storage battery 3 chargings; Said balanced circuit is preferably in the balance brachium pontis; Its balance brachium pontis mid point is connected to the positive and negative busbar mid point through two-way diverter switch and inductance; This example is through the switch on and off up and down of the two-way diverter switch of Current Control balance brachium pontis of sampling positive and negative busbar voltage and balance brachium pontis mid point; Realize the positive and negative busbar balance, reach charging circuit multiplexing of balanced circuit and charhing unit 402.
By Fig. 2 and shown in Figure 3, compared with prior art, in this routine balance module 4; The charging circuit of the balanced circuit of balancing unit 401 and charhing unit 402 is multiplexing, and is different with sequential at the different mode period control method, and said different mode is for exchanging input pattern or direct current input pattern; And then the balance of realization positive and negative busbar; Storage battery 3 alternately guarantees dual power supply with AC power 1, and on this basis, the rectifying circuit of said interchange input rectifying and direct current input rectifying is also multiplexing; And then realized the dual power supply system based on the balance brachium pontis of positive and negative busbar balance; Reduce its volume, save cost, can also guarantee the performance and the reliability of dual power supply system simultaneously.
The fundamental diagram of this example under city's power mode and battery mode as shown in Figures 2 and 3, said city power mode promptly exchanges input pattern and direct current input pattern with battery mode.
The further improvement of this example is that said rectifying circuit is the brachium pontis rectification, and said first switch element 203 is connected to the mid point of brachium pontis rectification through inductance, and said brachium pontis rectification comprises the transistor of serial connection or the FET of parallelly connected discrete diode.Preferably, the transistor of said brachium pontis rectification is an insulated gate bipolar transistor.
Said brachium pontis rectification comprises the transistor or the FET of serial connection, and promptly the IGBT or the MOSFET of serial connection when using MOSFET, need parallelly connected discrete diode; Said first switch element 203 is connected to the mid point of brachium pontis rectification through inductance, promptly exchanges the input of input or direct current and is connected to the mid point of two transistors or FET through first switch element 203, has constituted good AC rectification and the direct current rectification is multiplexing.Compared with prior art, this example just can be passed through same rectifying circuit and realize exchanging the multiplexing of input rectifying and direct current input rectifying as long as pass through the switching of first switch and then select to exchange input and the direct current input, reduces the volume of dual power supply system.
The further improvement of this example is that said balanced circuit is the balance brachium pontis, and said balance brachium pontis comprises the transistor of serial connection or the FET of parallelly connected discrete diode.Preferably, the transistor of said balance brachium pontis is an insulated gate bipolar transistor.
The further improvement of this example is; Also comprise the 3rd switch element 404 that is used to connect storage battery 3 and balance module 4; The anode of said storage battery 3 is imported through the rectification that first switch element 203 is connected to rectification module 2, and the anode of said storage battery 3 is connected to the mid point of balance brachium pontis through the 3rd switch element 404 and second switch unit 403.
More particularly, the anode of said storage battery 3 is connected to the 3rd switch element 404, the three switch elements 404 through inductance and is connected with second switch unit 403; To switch the mid point that is connected to the balance brachium pontis through bidirectional switch; Realization storage battery 3 is connected with balance module 4, is convenient to import under the pattern of switching with exchanging in the direct current input, realizes the multiplexing of rectifying circuit and balanced circuit; Reduce volume, guarantee the performance and the reliability of dual power supply system.
The further improvement of this example is, said first switch element 203 and the 3rd switch element 404 be in relay, controllable silicon and the contactor any one.
The further improvement of this example is that said first switch element 203 and the 3rd switch element 404 are single-way switch or bidirectional switch.
For guaranteeing the normal conversion work of Alternating Current Power Supply and direct current supply; Simultaneously according to different demands such as power and change-over times; Wherein first switch element 203 and the 3rd switch element 404 comprise in relay, controllable silicon and the contactor any one; And can be unidirectional or bidirectional switch, like one-way SCR; During simultaneously for assurance direct current supply, need to cut off exchanging input, according to the demand of power and switching time, the alternating-current switch in first switch element 203 also can correspondingly be selected different schemes for use, includes but not limited to relay, controllable silicon and contactor; Said two-way diverter switch can be selected two-way diverter switches such as relay, controllable silicon and contactor for use.
When the operation principle in this illustration 1 was imported for interchange: bidirectional switch Q4 was logical, and single-way switch Q1 is disconnected, and inductance L 1, transistor Q3 and transistor Q5 form the half-bridge rectifying circuit, and the realization rectification is boosted; Transistor Q6, transistor Q7 and inductance L 5 are formed the step-down circuit, realize the charging to storage battery 3; Said transistor Q6 and transistor Q7 utilize diode in the IGBT body, and this routine described transistor also can replace to the FET of parallelly connected discrete diode.
Among Fig. 1, during the direct current input, bidirectional switch Q4 is disconnected, and single-way switch Q1 is logical, and inductance L 1, transistor Q3 and transistor Q5 form booster circuit, realize boosting rectification; Transistor Q6, transistor Q7 and inductance L 2 Compositional balance circuits; Break-make and then adjustment busbar voltage through PWM modulation transistor Q6 or transistor Q7; Realize the bus balance; Said transistor Q3 utilizes diode in its body, and this routine described transistor also can replace to the FET of parallelly connected discrete diode.
This routine beneficial effect is that in the balance module 4, the charging circuit of the balanced circuit of balancing unit 401 and charhing unit 402 is multiplexing; And the balance of realization positive and negative busbar, storage battery 3 alternately guarantees dual power supply with AC power 1, on this basis; The rectifying circuit of said interchange input rectifying and direct current input rectifying is also multiplexing; And then realized the balance of positive and negative busbar having effectively reduced number of elements and equipment volume, the components and parts reusability is high; Reduce cost, can also guarantee the performance and the reliability of dual power supply system simultaneously.
This routine said rectification module 2 can comprise 3 groups of rectifying circuits, the shared storage battery 3 of said rectifying circuit, and be connected to corresponding AC power 1 respectively.
Said 3 groups of rectifying circuit correspondences are provided with 3 group of first switch element 203, and shared storage battery 3; Said AC power 1 connects with corresponding rectifying circuit through first switch element 203 respectively, forms the dual power supply system of 3 tunnel inputs.Said dual power supply system can carry out the selection of multichannel incoming line according to the actual requirements, and the way of incoming line is variable, and the way of output also can be selected according to the actual requirements, and the occupation mode flexibility and changeability connects simple.
Embodiment 2:
Like Fig. 4 and shown in Figure 5, different with embodiment 1 is, the dual power supply system that this example provides embodiment 1 to develop, and this routine described transistor also can replace to the FET of parallelly connected discrete diode.
Wherein, circuit shown in Figure 4 can be economized except that balance brachium pontis inductance, and its operation principle is: during the interchange input, bidirectional switch Q4 is logical, and single-way switch Q1 is disconnected, and inductance L 1, transistor Q3 and transistor Q5 form the half-bridge rectifying circuit, and the realization rectification is boosted; Transistor Q6, transistor Q7 and inductance L 5 are formed the step-down circuit, realize the charging to battery.During the direct current input, bidirectional switch Q4 is disconnected, and single-way switch Q1 is logical, and inductance L 1, transistor Q3 and transistor Q5 form booster circuit, realizes boosting rectification; Transistor Q6 and transistor Q7 Compositional balance circuit are through the break-make adjustment busbar voltage of PWM modulation transistor Q6 or transistor Q7.
In the circuit shown in Figure 5, balance brachium pontis inductance and charging circuit inductance can shared inductance L 2 inductance, and its operation principle is: bidirectional switch Q4 is logical, and single-way switch Q1 is disconnected, and inductance L 1, transistor Q3 and transistor Q5 form the half-bridge rectifying circuit, realizes that rectification boosts; Transistor Q6, transistor Q7 and inductance L 5 are formed the step-down circuit, realize the charging to storage battery.During the direct current input, bidirectional switch Q4 is disconnected, and single-way switch Q1 is logical, and inductance L 1, transistor Q3 and transistor Q5 form booster circuit, realizes boosting rectification; Transistor Q6 and transistor Q7 Compositional balance circuit are through the break-make adjustment busbar voltage of PWM modulation transistor Q6 or transistor Q7.
Embodiment 3:
Like Fig. 6 and shown in Figure 7, different with embodiment 1 or 2 is, this example can be applicable to three to be advanced three and go out circuit or three and advance singly to go out circuit, and this routine described transistor also can replace to the FET of parallelly connected discrete diode.
Wherein, shown in Figure 6 is three to advance the three line work schematic diagrams that go out, its operation principle: when exchanging input, single-way switch Q10R, single-way switch Q10S and single-way switch Q10T are logical; Single-way switch Q1, single-way switch Q11 and single-way switch Q111 are disconnected, (inductance L 1-R, transistor Q3-R; Transistor Q5-R), (inductance L 1-S, transistor Q3-S, transistor Q5-S) and (inductance L 1-T; Transistor Q3-T, transistor Q5-T) form three-phase half-bridge rectifying circuit, the realization rectification is boosted; Transistor Q6, transistor Q7 and inductance L 2 are formed the step-down circuit, realize the charging to battery.During direct current (battery) input, single-way switch Q10R, single-way switch Q10S and single-way switch Q10T are disconnected, and single-way switch Q1, single-way switch Q11 and single-way switch Q111 are logical, and inductance L 1, transistor Q3 and transistor Q5 form booster circuit, realize boosting rectification; Transistor Q6, transistor Q7 and inductance L 5 Compositional balance circuits are through the break-make adjustment busbar voltage of PWM modulation transistor Q6 or transistor Q7.Output is adopted as 3 tunnel outputs.
Shown in Figure 7 is three to advance the line work schematic diagram that singly goes out, its operation principle: when exchanging input, single-way switch Q10R, single-way switch Q10S and single-way switch Q10T are logical; Single-way switch Q1, single-way switch Q11 and single-way switch Q111 are disconnected, (inductance L 1-R, transistor Q3-R; Transistor Q5-R), (inductance L 1-S, transistor Q3-S, transistor Q5-S) and (inductance L 1-T; Transistor Q3-T, transistor Q5-T) form three-phase half-bridge rectifying circuit, the realization rectification is boosted; Transistor Q6, transistor Q7 and inductance L 2 are formed the step-down circuit, realize the charging to battery.During direct current (battery) input, single-way switch Q10R, single-way switch Q10S and single-way switch Q10T are disconnected, and single-way switch Q1, single-way switch Q11 and single-way switch Q111 are logical, and inductance L 1, transistor Q3 and transistor Q5 form booster circuit, realize boosting rectification; Transistor Q6, transistor Q7 and inductance L 5 Compositional balance circuits are through the break-make adjustment busbar voltage of PWM modulation transistor Q6 or transistor Q7.Be output as single channel output.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (10)
1. the dual power supply system based on the balance brachium pontis is characterized in that, comprising:
Be used to realize the AC power of Alternating Current Power Supply;
With the rectification module that said AC power is connected, said rectification module comprises AC rectification unit, direct current rectification unit and first switch element; Said AC rectification unit and the multiplexing rectifying circuit of direct current rectification unit, and pass through the switching that first switch element is realized AC rectification and direct current rectification;
Be used to realize the storage battery of direct current supply, said storage battery is connected with rectification module; And,
The balance module that is connected with storage battery with said rectification module respectively, said balance module comprises balancing unit, charhing unit and second switch unit, said second switch unit is two-way diverter switch; The multiplexing balanced circuit of said balancing unit and charhing unit, and through two-way diverter switch realization switching and positive and negative busbar balance.
2. the dual power supply system based on the balance brachium pontis according to claim 1; It is characterized in that; Said rectifying circuit is the brachium pontis rectification; Said first switch element is connected to the mid point of brachium pontis rectification through inductance, and said brachium pontis rectification comprises the transistor of serial connection or the FET of parallelly connected discrete diode.
3. the dual power supply system based on the balance brachium pontis according to claim 1 and 2 is characterized in that, said balanced circuit is the balance brachium pontis, and said balance brachium pontis comprises the transistor of serial connection or the FET of parallelly connected discrete diode.
4. the dual power supply system based on the balance brachium pontis according to claim 3 is characterized in that, said rectification module comprises 3 groups of rectifying circuits, the shared storage battery of said rectifying circuit, and be connected to corresponding AC power respectively.
5. the dual power supply system based on the balance brachium pontis according to claim 3; It is characterized in that; Also comprise the 3rd switch element that is used to connect storage battery and balance module; The anode of said storage battery is imported through the rectification that first switch element is connected to rectification module, and the anode of said storage battery is connected to the mid point of balance brachium pontis through the 3rd switch element and second switch unit.
6. the dual power supply system based on the balance brachium pontis according to claim 5 is characterized in that, said first switch element and the 3rd switch element be in relay, controllable silicon and the contactor any one.
7. the dual power supply system based on the balance brachium pontis according to claim 5 is characterized in that, said first switch element and the 3rd switch element are single-way switch or bidirectional switch.
8. the dual power supply system based on the balance brachium pontis according to claim 7 is characterized in that, said first switch element and the 3rd switch element be in relay, controllable silicon and the contactor any one.
9. the dual power supply system based on the balance brachium pontis according to claim 8; It is characterized in that; Said AC power anode is connected to an end of the inductance of rectification module through bidirectional triode thyristor; Said storage battery anode is connected to the same end of the inductance of rectification module through one-way SCR, said storage battery negative terminal is connected to rectification module and balance module; The inductance other end of said rectification module is connected to the transistorized mid point of two serial connections, and the electric capacity of two serial connections of transistor AND gate of said two serial connections is in parallel, the electric capacity neutral earthing of these two serial connections; The electric capacity mid point of said two serial connections is connected to an input of two-way diverter switch through the inductance of balance module; Another input that inductance and the one-way SCR of said storage battery anode through balance module is connected to two-way diverter switch, the output of said two-way diverter switch is connected to the transistorized mid point of two serial connections; The transistor parallel connection of two other serial connection of transistor AND gate of two serial connections of said balance module, these two the transistor mid points parallelly connected with balance module are realized inversion output through inductance.
10. the dual power supply system based on the balance brachium pontis according to claim 8; It is characterized in that; Said AC power anode is connected to an end of the inductance of rectification module through bidirectional triode thyristor; Said storage battery anode is connected to the same end of the inductance of rectification module through one-way SCR, said storage battery negative terminal is connected to rectification module and balance module; The inductance other end of said rectification module is connected to the mid point of the FET of two serial connections, and the FET of said two serial connections is in parallel with two electric capacity that are connected in series, the electric capacity neutral earthing of these two serial connections; The electric capacity mid point of said two serial connections is connected to an input of two-way diverter switch through the inductance of balance module; Another input that inductance and the one-way SCR of said storage battery anode through balance module is connected to two-way diverter switch, the output of said two-way diverter switch is connected to the mid point of the FET of two serial connections; The FET parallel connection that the FET of two serial connections of said balance module is connected in series with two other, these two the FET mid points parallelly connected with balance module are realized inversion output through inductance.
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| CN201210155426.5A CN102710007B (en) | 2012-05-18 | 2012-05-18 | Double-power-supply system based on balance bridge arm |
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| CN113467563A (en) * | 2021-07-06 | 2021-10-01 | 中国航发北京航科发动机控制系统科技有限公司 | Bidirectional current source circuit |
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| CN102710007B (en) | 2014-08-06 |
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