CN102710006B - Double-power supply system with balance bridge arm - Google Patents
Double-power supply system with balance bridge arm Download PDFInfo
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- CN102710006B CN102710006B CN201210155422.7A CN201210155422A CN102710006B CN 102710006 B CN102710006 B CN 102710006B CN 201210155422 A CN201210155422 A CN 201210155422A CN 102710006 B CN102710006 B CN 102710006B
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Abstract
The invention provides a double-power supply system with a balance bridge arm, comprising an alternating current power supply, an alternating current rectifying module which is connected to the alternating current power supply through a switch SW1 and can realize the rectification and the boosting of the alternating current input through a bidirectional rectifying circuit, a direct current rectifying module which is used for realizing the boosting and charging of the battery, and is connected with the alternating current rectifying module, an inverting module which is used for realizing the inverting output, and is connected with the direct current rectifying module, and a balance module which is used for realizing the bus balance when the direct current power supply is carried out, is earthed through a switch SW2, and achieves the line multiplexing with the alternating current rectifying module. In the invention, the alternating current rectifying module and the balance module multiplex the balance bridge arm, the multiplex of the line and the balance between positive and negative buses can be realized by adding one selector switch only; the control method and the timing sequence of the double-power supply system are different in different modes; and furthermore, the double-power supply system is small in volume, low in cost, and high in reliability.
Description
Technical field
The present invention relates to a kind of dual power supply system, particularly relate to a kind of dual power supply system with balance brachium pontis.
Background technology
In existing dual power supply system, in the monocell commutation system of especially duplicate supply input, the equilibrium problem of positive and negative busbar is that industry technology personnel must not irrespective problem always; Major part related system, in order to control cost and reduce volume, just gives up this requirement in the design phase, does not namely do the consideration of bus balance, but like this, all can cause certain influence, reduce its quality and stability to the performance of complete machine and reliability.
Summary of the invention
Technical problem to be solved by this invention needs to provide the dual power supply system that a kind of cost is low, volume is little, and realize the balance of bus.
To this, the invention provides a kind of dual power supply system with balance brachium pontis, comprising:
For realizing the AC power of Alternating Current Power Supply;
AC rectification module, described AC rectification module is connected to AC power by interrupteur SW 1, and described AC rectification module realizes by the biphase rectification circuit of ac/dc the rectification and the boosting that exchange input;
DC Module, described DC Module and AC rectification model calling, described DC Module realizes boosting and the charging of battery by two-way step-up/down circuit;
For realizing the inversion module that AC/DC inversion exports, described inverter circuit is connected with DC Module; And,
For realizing the balance module of bus balance when direct current supply, described balance module is by interrupteur SW 2 ground connection, and described balance module and AC rectification module realize line sharing.
Wherein, described balance module and AC rectification module realize line sharing, described line sharing is the multiplexing of balance brachium pontis, described balance brachium pontis passes through transistor or the field effect transistor of serial connection mutually, for realizing the bridge arm balance of electric bridge, described field effect transistor is parallel with discrete diode, and described discrete diode is discrete power device, includes semiconductor diode; Described AC rectification module is the biphase rectification circuit of an ac/dc, is namely realized the rectifying circuit of two-way AC-DC by balance brachium pontis, also referred to as two-way AC/DC rectifying circuit; Described DC Module also claims battery rectification circuit, realizes direct current supply by battery, is a two-way DC-DC circuit, also referred to as two-way DC/DC circuit, described DC Module by two-way step-up/down circuit to realize boosting and the charging of battery; Described inversion module exports for the inversion realizing AC/DC, and be connected with DC Module, described inversion module can adopt the half-bridge circuit of AC/DC, i.e. the semibridge system circuit of DC/AC, can be realized the inversion output of AC/DC by semibridge system inverter line; Described balance module is by balancing brachium pontis with AC rectification module reuse, namely balance module and AC rectification module realize line sharing, described balance module is by interrupteur SW 2 ground connection, that is, the line sharing of described balance module and AC rectification module only increases the balance that a diverter switch just achieves the positive and negative busbar under direct current supply pattern.
The present invention is by line sharing, and namely balance the multiplexing of brachium pontis and then realize the positive and negative busbar balance of dual power supply system, make cost very low, volume is little, the dual power supply system of high-power in being highly suitable for, high reliability.
Mode of operation of the present invention comprises Alternating Current Power Supply pattern and direct current supply pattern, under Alternating Current Power Supply pattern, AC rectification module is can the half-bridge circuit of two-way flow, exchange input realizes interchange rectification and boosting by interrupteur SW 1, inductance L 1, transistor/field effect transistor Q1 and transistor/field effect transistor Q2, AC rectification module two-way flow can ensure that the simplicity that balancing circuitry realizes, and only needs increase interrupteur SW 2 can realize the balance of positive and negative busbar; Described DC Module is two-way flowable DC-DC circuit, also be battery charger, charged the battery by bus, when exchanging input, bus forms buck circuit by transistor/field effect transistor Q3, transistor/field effect transistor Q5, transistor/field effect transistor Q6, inductance L 2, inductance L 3, interrupteur SW 3 and interrupteur SW 5 and charges the battery, and namely step-down circuit charges the battery; Inverter circuit can be semi-bridge inversion circuit.
Under direct current supply pattern, namely under battery powered mode, DC rectifier circuit forms boos circuit by transistor/field effect transistor Q3, transistor/field effect transistor Q5, transistor/field effect transistor Q6, inductance L 2, inductance L 3, interrupteur SW 3 and interrupteur SW 5 and boosts to bus, namely forms booster circuit and boosts to bus; Balance module realizes line sharing by balance brachium pontis with the AC rectification circuit exchanged when inputting, i.e. multiplexing inductance L 1, transistor/field effect transistor Q1 and transistor/field effect transistor Q2, only need, by interrupteur SW 1 and interrupteur SW 2, input is switched to center line, the balance of bus can be realized by the break-make controlling transistor/field effect transistor Q1 and transistor/field effect transistor Q2; Inverter circuit is semi-bridge inversion circuit.
Compared with prior art, AC rectification module of the present invention and balance module reuse balance brachium pontis, only need the balance that just can realize the multiplexing of circuit and positive and negative busbar by increasing a diverter switch, when different mode, its control method is different with sequential; Described different mode is Alternating Current Power Supply pattern or direct current supply pattern, achieve the balance of the positive and negative busbar of dual power supply system, described battery and AC power alternately ensure dual power supply, and volume is little, cost is low, and can ensure performance and the reliability of dual power supply system.The high-power dual power supply system high with reliability requirement during the present invention is particularly suitable for.
Further improvement of the present invention is, the biphase rectification circuit of described AC rectification module is bi-directional half bridge rectifying circuit.Described bi-directional half bridge rectifying circuit is semibridge system AC/DC biphase rectification circuit, i.e. semibridge system ac/dc biphase rectification circuit, can by only increasing a diverter switch on hardware, the switching of Alternating Current Power Supply pattern and direct current supply pattern can be realized, the bus balance under direct current supply pattern is realized by amendment sequential, structure is simple, cost is low, volume is little, compared with prior art, by balancing the line sharing of brachium pontis, only only increase a diverter switch, just the balance of positive and negative busbar is achieved, increase on cost is considerably less, Be very effective, circuit obtains well to be optimized and improves.
Further improvement of the present invention is, described bi-directional half bridge rectifying circuit comprises the transistor of serial connection or is parallel with the field effect transistor of discrete diode, and described interrupteur SW 1 and interrupteur SW 2 are connected to the mid point of bi-directional half bridge rectifying circuit by inductance L 1.
Wherein, described transistor is preferably IGBT, i.e. insulated gate bipolar transistor; Described field effect transistor is MOSFET, when using MOSFET, needs discrete diode in parallel; Described interrupteur SW 1 and interrupteur SW 2 are connected to the mid point of bi-directional half bridge rectifying circuit by inductance L 1, namely interrupteur SW 1 and interrupteur SW 2 are connected to the mid point of transistor or field effect transistor by inductance L 1, can when direct current supply, make the positive and negative busbar counterbalance effect of balance module more remarkable, the rectification and the boosting that realize interchange input can also be promoted simultaneously.
Further improvement of the present invention is, described bi-directional half bridge rectifying circuit comprises the transistor of serial connection; Described AC power is connected to inductance L 1 by interrupteur SW 1, and inductance L 1 is connected to transistor Q1 and exchanges with the mid point of transistor Q2 the rectification inputted with realization.
Wherein, interrupteur SW 1, inductance L 1, transistor Q1 and transistor Q2 form the AC rectification circuit of semibridge system, i.e. bi-directional half bridge rectifying circuit, and rectifier boost is carried out in the interchange of described bi-directional half bridge rectifying circuit to input; The balance brachium pontis circuit of interrupteur SW 2, inductance L 1, transistor Q1 and transistor Q2 Compositional balance module, when direct current supply pattern, namely during battery powered mode, realizes the balance of busbar voltage by the break-make controlling transistor Q1 and transistor Q2; Interrupteur SW 3, interrupteur SW 5, inductance L 2, inductance L 3, transistor Q3, transistor Q5 and transistor Q6 form boost/buck circuit, i.e. step-up/down circuit, form buck circuit (step-down circuit) during Alternating Current Power Supply pattern to charge to battery, form boost circuit (booster circuit) time direct current supply pattern (battery input), bus is boosted; Transistor Q8 and transistor Q9 forms semi-bridge inversion circuit and realizes AC/DC inversion.
Described interrupteur SW 1 closes, and interrupteur SW 2 disconnects, be then in Alternating Current Power Supply pattern, described interrupteur SW 1 disconnects, interrupteur SW 2 closes, then be in direct current supply pattern, the above-mentioned technical characteristic of further employing, the present invention by diverter switch and then can realize the switching exchanging input and direct current input fast, achieved the positive and negative busbar balance of low cost by line sharing simultaneously, described line sharing is that the balance brachium pontis of the Half bridge rectifier circuit of AC rectification module and balance module is multiplexing, structure is simple, volume is little, on this basis, the Half bridge rectifier circuit of described AC rectification module, balance brachium pontis and the DC Module step-up/down circuit of balance module all adopt transistor to realize, promote quality and the stability of product more further.
Further improvement of the present invention is, described bi-directional half bridge rectifying circuit comprises the field effect transistor of serial connection, and described field effect transistor is parallel with discrete diode; Described AC power is connected to inductance L 1 by interrupteur SW 1, and inductance L 1 is connected to field effect transistor Q1 and exchanges with the mid point of field effect transistor Q2 the rectification inputted with realization.
Wherein, interrupteur SW 1, inductance L 1, field effect transistor Q1 and field effect transistor Q2 form the AC rectification circuit of semibridge system, i.e. bi-directional half bridge rectifying circuit, and rectifier boost is carried out in the interchange of described bi-directional half bridge rectifying circuit to input; The balance brachium pontis circuit of interrupteur SW 2, inductance L 1, field effect transistor Q1 and field effect transistor Q2 Compositional balance module, when direct current supply pattern, namely during battery powered mode, realizes the balance of busbar voltage by the break-make controlling field effect transistor Q1 and field effect transistor Q2; Interrupteur SW 3, interrupteur SW 5, inductance L 2, inductance L 3, field effect transistor Q3, field effect transistor Q5 and field effect transistor Q6 form boost/buck circuit, i.e. step-up/down circuit, form buck circuit (step-down circuit) during Alternating Current Power Supply pattern to battery charging, namely form step-down circuit and battery is charged; Form boost circuit (booster circuit) time direct current supply pattern (battery input), namely form booster circuit when battery inputs and bus is boosted; Field effect transistor Q8 and field effect transistor Q9 forms semi-bridge inversion circuit and realizes AC/DC inversion.
The present invention by diverter switch and then can realize the switching exchanging input and direct current input fast, achieved the positive and negative busbar balance of low cost by line sharing simultaneously, structure is simple, volume is little, on this basis, the Half bridge rectifier circuit of described AC rectification module, the balance brachium pontis of balance module and DC Module step-up/down circuit all adopt field effect transistor to realize, and further promote quality and the stability of product.
Further improvement of the present invention is, inductance L 1 is connected to the positive pole of AC power by interrupteur SW 1, the minus earth of AC power; Inductance L 1 is by interrupteur SW 2 ground connection.By the switching of interrupteur SW 1 and interrupteur SW 2, the switching of Alternating Current Power Supply and direct current supply can be realized fast, and then under achieving Alternating Current Power Supply pattern, charged the battery by bus; Under direct current supply pattern, realized the balance of positive and negative busbar by balance brachium pontis, realize DC rectifier and bus boosting by DC Module.
Further improvement of the present invention is, under Alternating Current Power Supply pattern, described DC Module is charged the battery by step-down circuit; Under direct current supply pattern, described DC Module is boosted to bus by booster circuit.Described DC Module is under different powering modes, and realize step-down charging and boosting power supply respectively, and then save the quantity of components and parts, circuit is rationally effective.
Further improvement of the present invention is, the step-up/down circuit of described DC Module comprises: battery V1, the positive pole of battery V1 is connected to interrupteur SW 3 and inductance L 2, the negative pole of battery V1 is connected to interrupteur SW 5 and inductance L 3, the two ends of interrupteur SW 3 and interrupteur SW 5 are parallel with electric capacity C5, inductance L 2 is connected to the mid point of field effect transistor Q3 and field effect transistor Q6, and inductance L 3 is connected to the mid point of field effect transistor Q6 and field effect transistor Q5; Wherein, field effect transistor Q3, field effect transistor Q6 and field effect transistor Q5 are mutually connected in series and are parallel with discrete diode.
Wherein, field effect transistor Q3 one end is connected to inductance L 2 and field effect transistor Q6, and the other end is connected to the transistor/field effect transistor Q1 of AC rectification module; Field effect transistor Q5 one end is connected to inductance L 3 and field effect transistor Q6, and the other end is connected to the transistor/field effect transistor Q2 of AC rectification module; Described battery V1 realizes DC rectifier by switch and LC filtering, and then realizes boosting and the charging of battery, and its advantage is, the present invention is simple and reasonable, and bus good balance effect, cost is low.
Further improvement of the present invention is, the step-up/down circuit of described DC Module comprises: battery V1, the positive pole of battery V1 is connected to interrupteur SW 3 and inductance L 2, the negative pole of battery V1 is connected to interrupteur SW 5 and inductance L 3, the two ends of interrupteur SW 3 and interrupteur SW 5 are parallel with electric capacity C5, inductance L 2 is connected to the mid point of transistor Q3 and transistor Q6, and inductance L 3 is connected to the mid point of transistor Q6 and transistor Q5, and transistor Q3, transistor Q6 and transistor Q5 are connected in series.
Transistor Q3 one end is connected to inductance L 2 and transistor Q6, and the other end is connected to the transistor/field effect transistor Q1 of AC rectification module; Transistor Q5 one end is connected to inductance L 3 and transistor Q6, and the other end is connected to the transistor/field effect transistor Q2 of AC rectification module; Described battery V1 realizes DC rectifier by switch and LC filtering, and then realizes boosting and the charging of battery, promotes the counterbalance effect of positive and negative busbar.
Beneficial effect of the present invention is, described AC rectification module and balance module reuse balance brachium pontis, compared with prior art, only need the balance that just can realize the multiplexing of circuit and positive and negative busbar by increasing a diverter switch, different with sequential at different mode period control method, described different mode is Alternating Current Power Supply pattern or direct current supply pattern, and then achieve the balance of positive and negative busbar of dual power supply system well, volume is little, cost is low, the performance of dual power supply system can be ensured, improve its stability.The high-power dual power supply system higher with reliability requirement during the present invention is particularly suitable for.
Accompanying drawing explanation
Fig. 1 is the circuit connection diagram of the embodiment of the present invention 1;
Fig. 2 is the circuit connection diagram of the Alternating Current Power Supply pattern of the embodiment of the present invention 1;
Fig. 3 is the circuit connection diagram of the direct current supply pattern of the embodiment of the present invention 1;
Fig. 4 is that three of the embodiment of the present invention 6 enters the dual power supply system circuit connection diagram singly gone out;
Fig. 5 is that three of the embodiment of the present invention 6 enters the three dual power supply system circuit connection diagrams gone out.
Embodiment
Below in conjunction with accompanying drawing, preferably embodiment of the present invention is described in further detail.
Embodiment 1:
As shown in Figure 1 to Figure 3, this example provides a kind of dual power supply system with balance brachium pontis 201, comprising:
For realizing the AC power 1 of Alternating Current Power Supply;
AC rectification module 2, described AC rectification module 2 is connected to AC power 1 by interrupteur SW 1, and described AC rectification module 2 realizes by the biphase rectification circuit of ac/dc the rectification and the boosting that exchange input;
DC Module 3, described DC Module 3 is connected with AC rectification module 2, and described DC Module 3 realizes boosting and the charging of battery by two-way step-up/down circuit;
For realizing the inversion module 4 that AC/DC inversion exports, described inverter circuit is connected with DC Module 3; And,
For realizing the balance module 5 of bus balance when direct current supply, described balance module 5 is by interrupteur SW 2 ground connection, and described balance module 5 realizes line sharing with AC rectification module 2.
Wherein, as shown in Figure 1, described balance module 5 realizes line sharing with AC rectification module 2, described line sharing is the multiplexing of balance brachium pontis 201, described balance brachium pontis 201 passes through transistor or the field effect transistor of serial connection mutually, for realizing the bridge arm balance of electric bridge, described field effect transistor is parallel with discrete diode; Described AC rectification module 2 is biphase rectification circuits of an ac/dc, is namely realized the rectifying circuit of two-way AC-DC by balance brachium pontis 201; Described DC Module 3 also claims battery rectification circuit, realizes direct current supply by battery, is a two-way DC-DC circuit, described DC Module 3 by two-way step-up/down circuit to realize boosting and the charging of battery; Described inversion module 4 is half-bridge circuits of an AC/DC, exports to realize inversion; Described balance module 5 is by balance brachium pontis 201 multiplexing with AC rectification module 2, namely balance module 5 and AC rectification module 2 realize line sharing, described balance module 5 is by interrupteur SW 2 ground connection, that is, described balance module 5 and the line sharing of AC rectification module 2 only increase the balance that a diverter switch just achieves the positive and negative busbar under direct current supply pattern.
This example is by line sharing, and namely balance the multiplexing of brachium pontis 201 and then achieve the positive and negative busbar balance of dual power supply system, make cost control very low, volume is little, the dual power supply system of high-power in being applicable to, high reliability.
The mode of operation of this example comprises Alternating Current Power Supply pattern and direct current supply pattern, as shown in Figure 2, under Alternating Current Power Supply pattern, AC rectification module 2 is can the half-bridge circuit of two-way flow, exchange input realizes exchanging input rectification and boosting by interrupteur SW 1, inductance L 1, transistor/field effect transistor Q1 and transistor/field effect transistor Q2, AC rectification module 2 two-way flow can ensure that the simplicity that balancing circuitry realizes, and only needs increase interrupteur SW 2 can realize the balance of positive and negative busbar; Described DC Module 3 is two-way flowable DC-DC circuit, also be battery charger, charged the battery by bus, exchange bus when inputting and form buck circuit by transistor/field effect transistor Q3, transistor/field effect transistor Q5, transistor/field effect transistor Q6, inductance L 2, inductance L 3, interrupteur SW 3 and interrupteur SW 5, namely step-down circuit charges the battery; Inverter circuit is semi-bridge inversion circuit, namely comprises transistor/field effect transistor Q8, transistor/field effect transistor Q9 and inductance L 5.
As shown in Figure 3, under direct current supply pattern, namely under battery powered mode, DC rectifier circuit forms boos circuit by transistor/field effect transistor Q3, transistor/field effect transistor Q5, transistor/field effect transistor Q6, inductance L 2, inductance L 3, interrupteur SW 3 and interrupteur SW 5, namely form booster circuit to boost to bus, realize DC rectifier and charging circuit; Balance module 5 realizes line sharing by balance brachium pontis 201 with the AC rectification circuit exchanged when inputting, i.e. multiplexing inductance L 1, transistor/field effect transistor Q1 and transistor/field effect transistor Q2, only need, by interrupteur SW 1 and interrupteur SW 2, input is switched to center line, the balance of bus can be realized by the break-make controlling transistor/field effect transistor Q1 and transistor/field effect transistor Q2; Inverter circuit is semi-bridge inversion circuit.Can find out that AC rectification module 2, DC Module 3, inversion module 4 and balance module 5 share electric capacity C1 and electric capacity C2 by Fig. 2 and Fig. 3.
Compared with prior art, this routine AC rectification module 2 and the multiplexing balance brachium pontis 201 of balance module 5, only need the balance that just can realize the multiplexing of circuit and positive and negative busbar by increasing a diverter switch, different with sequential at different mode period control method, described different mode is Alternating Current Power Supply pattern or direct current supply pattern, and then realize the balance of positive and negative busbar of dual power supply system, described battery and AC power 1 alternately ensure dual power supply, volume is little, cost is low, and can ensure performance and the reliability of dual power supply system.The high-power dual power supply system high with reliability requirement during this example is particularly suitable for.
The further improvement of this example is, the biphase rectification circuit of described AC rectification module 2 is bi-directional half bridge rectifying circuit.Described bi-directional half bridge rectifying circuit is semibridge system AC/DC biphase rectification circuit, i.e. semibridge system ac/dc biphase rectification circuit, can by only increasing a diverter switch on hardware, the switching of Alternating Current Power Supply pattern and direct current supply pattern can be realized, the bus balance under direct current supply pattern is realized by amendment sequential, structure is simple, cost is low, volume is little, compared with prior art, by balancing the line sharing of brachium pontis 201, only only increase a diverter switch, just the balance of positive and negative busbar is achieved, increase on cost is considerably less, Be very effective, circuit obtains well to be optimized and improves.
The further improvement of this example is, described bi-directional half bridge rectifying circuit comprises the transistor of serial connection or is parallel with the field effect transistor of discrete diode, and described interrupteur SW 1 and interrupteur SW 2 are connected to the mid point of bi-directional half bridge rectifying circuit by inductance L 1.
Wherein, described transistor is preferably IGBT, i.e. insulated gate bipolar transistor; Described field effect transistor is MOSFET, when using MOSFET, needs discrete diode in parallel; Described interrupteur SW 1 and interrupteur SW 2 are connected to the mid point of bi-directional half bridge rectifying circuit by inductance L 1, namely interrupteur SW 1 and interrupteur SW 2 are connected to the mid point of transistor or field effect transistor by inductance L 1, can when direct current supply, make the positive and negative busbar counterbalance effect of balance module 5 more remarkable, the rectification and the boosting that realize interchange input can also be promoted simultaneously.
Embodiment 2:
On the basis of embodiment 1, this routine described bi-directional half bridge rectifying circuit comprises the transistor of serial connection; Described AC power 1 is connected to inductance L 1 by interrupteur SW 1, and inductance L 1 is connected to transistor Q1 and exchanges with the mid point of transistor Q2 the rectification inputted with realization.
Wherein, interrupteur SW 1, inductance L 1, transistor Q1 and transistor Q2 form the AC rectification circuit of semibridge system, i.e. bi-directional half bridge rectifying circuit, and rectifier boost is carried out in the interchange of described bi-directional half bridge rectifying circuit to input; Balance brachium pontis 201 circuit of interrupteur SW 2, inductance L 1, transistor Q1 and transistor Q2 Compositional balance module 5, when direct current supply pattern, namely during battery powered mode, realizes the balance of busbar voltage by the break-make controlling transistor Q1 and transistor Q2; Interrupteur SW 3, interrupteur SW 5, inductance L 2, inductance L 3, transistor Q3, transistor Q5 and transistor Q6 form boost/buck circuit, i.e. step-up/down circuit, form buck circuit (step-down circuit) during Alternating Current Power Supply pattern to charge to battery, form boost circuit (booster circuit) time direct current supply pattern (battery input), bus is boosted; Transistor Q8 and transistor Q9 forms semi-bridge inversion circuit and realizes AC/DC inversion.
Described interrupteur SW 1 closes, and interrupteur SW 2 disconnects, be then in Alternating Current Power Supply pattern, described interrupteur SW 1 disconnects, interrupteur SW 2 closes, then be in direct current supply pattern, the above-mentioned technical characteristic of further employing, this example by diverter switch and then can realize the switching exchanging input and direct current input fast, achieved the positive and negative busbar balance of low cost by line sharing simultaneously, described line sharing is that the balance brachium pontis 201 of the Half bridge rectifier circuit of AC rectification module 2 and balance module 5 is multiplexing, structure is simple, volume is little, on this basis, the Half bridge rectifier circuit of described AC rectification module 2, balance brachium pontis 201 and the DC Module 3 step-up/down circuit of balance module 5 all adopt transistor to realize, promote quality and the stability of product more further.
Embodiment 3:
On the basis of embodiment 1, this routine described bi-directional half bridge rectifying circuit comprises the field effect transistor of serial connection, and described field effect transistor is parallel with discrete diode; Described AC power 1 is connected to inductance L 1 by interrupteur SW 1, and inductance L 1 is connected to field effect transistor Q1 and exchanges with the mid point of field effect transistor Q2 the rectification inputted with realization.
Wherein, interrupteur SW 1, inductance L 1, field effect transistor Q1 and field effect transistor Q2 form the AC rectification circuit of semibridge system, i.e. bi-directional half bridge rectifying circuit, and rectifier boost is carried out in the interchange of described bi-directional half bridge rectifying circuit to input; Balance brachium pontis 201 circuit of interrupteur SW 2, inductance L 1, field effect transistor Q1 and field effect transistor Q2 Compositional balance module 5, when direct current supply pattern, namely, during battery powered mode, the balance of busbar voltage is realized by the break-make controlling field effect transistor Q1 and field effect transistor Q2; Interrupteur SW 3, interrupteur SW 5, inductance L 2, inductance L 3, field effect transistor Q3, field effect transistor Q5 and field effect transistor Q6 form boost/buck circuit, i.e. step-up/down circuit, form buck circuit (step-down circuit) during Alternating Current Power Supply pattern to charge to battery, form boost circuit (booster circuit) time direct current supply pattern (battery input), bus is boosted; Field effect transistor Q8 and field effect transistor Q9 forms semi-bridge inversion circuit and realizes AC/DC inversion.
This example by diverter switch and then can realize the switching exchanging input and direct current input fast, achieved the positive and negative busbar balance of low cost by line sharing simultaneously, structure is simple, volume is little, on this basis, the Half bridge rectifier circuit of described AC rectification module 2, the balance brachium pontis 201 of balance module 5 and DC Module 3 step-up/down circuit all adopt field effect transistor to realize, and further promote quality and the stability of product.
The further improvement of this example is, inductance L 1 is connected to the positive pole of AC power 1 by interrupteur SW 1, the minus earth of AC power 1; Inductance L 1 is by interrupteur SW 2 ground connection.By the switching of interrupteur SW 1 and interrupteur SW 2, the switching of Alternating Current Power Supply and direct current supply can be realized fast, and then under achieving Alternating Current Power Supply pattern, charged the battery by bus; Under direct current supply pattern, realized the balance of positive and negative busbar by balance brachium pontis 201, realize DC rectifier and bus boosting by DC Module 3.
Embodiment 4:
On the basis of embodiment 1, this example is under Alternating Current Power Supply pattern, and described DC Module 3 is charged the battery by step-down circuit; Under direct current supply pattern, described DC Module 3 is boosted to bus by booster circuit.Described DC Module 3 is under different powering modes, and realize step-down charging and boosting power supply respectively, and then save the quantity of components and parts, circuit is rationally effective.
The further improvement of this example is, the step-up/down circuit of described DC Module 3 comprises: battery V1, the positive pole of battery V1 is connected to interrupteur SW 3 and inductance L 2, the negative pole of battery V1 is connected to interrupteur SW 5 and inductance L 3, the two ends of interrupteur SW 3 and interrupteur SW 5 are parallel with electric capacity C5, inductance L 2 is connected to the mid point of field effect transistor Q3 and field effect transistor Q6, and inductance L 3 is connected to the mid point of field effect transistor Q6 and field effect transistor Q5; Wherein, field effect transistor Q3, field effect transistor Q6 and field effect transistor Q5 are mutually connected in series and are parallel with discrete diode.
Wherein, field effect transistor Q3 one end is connected to inductance L 2 and field effect transistor Q6, and the other end is connected to the transistor/field effect transistor Q1 of AC rectification module 2; Field effect transistor Q5 one end is connected to inductance L 3 and field effect transistor Q6, and the other end is connected to the transistor/field effect transistor Q2 of AC rectification module 2; Described battery V1 realizes DC rectifier by switch and LC filtering, and then realizes boosting and the charging of battery, and its advantage is, this example is simple and reasonable, and bus good balance effect, cost is low.
This example is also applicable to embodiment 2 and embodiment 3.
Embodiment 5:
As different from Example 4, the step-up/down circuit of this routine described DC Module 3 comprises: battery V1, the positive pole of battery V1 is connected to interrupteur SW 3 and inductance L 2, the negative pole of battery V1 is connected to interrupteur SW 5 and inductance L 3, the two ends of interrupteur SW 3 and interrupteur SW 5 are parallel with electric capacity C5, inductance L 2 is connected to the mid point of transistor Q3 and transistor Q6, and inductance L 3 is connected to the mid point of transistor Q6 and transistor Q5, and transistor Q3, transistor Q6 and transistor Q5 are connected in series.
Transistor Q3 one end is connected to inductance L 2 and transistor Q6, and the other end is connected to the transistor/field effect transistor Q1 of AC rectification module 2; Transistor Q5 one end is connected to inductance L 3 and transistor Q6, and the other end is connected to the transistor/field effect transistor Q2 of AC rectification module 2; Described battery V1 realizes DC rectifier by switch and LC filtering, and then realizes boosting and the charging of battery, promotes the counterbalance effect of positive and negative busbar.
The beneficial effect of this example is, described AC rectification module 2 and the multiplexing balance brachium pontis 201 of balance module 5, compared with prior art, only need the balance that just can realize the multiplexing of circuit and positive and negative busbar by increasing a diverter switch, different with sequential at different mode period control method, described different mode is Alternating Current Power Supply pattern or direct current supply pattern, and then achieve the balance of positive and negative busbar of dual power supply system well, volume is little, cost is low, the performance of dual power supply system can be ensured, improve its stability.The high-power dual power supply system higher with reliability requirement during this example is particularly suitable for.
The AC power 1 of above embodiment 1 to embodiment 5 is single phase alternating current (A.C.) input, is called for short and singly enters the dual power supply system singly gone out, powerful dual power supply system in being applicable to.Pass through, dual power supply system of the present invention also can support heterogeneous interchange input.
Embodiment 6:
As shown in Figure 4, on the basis of embodiment 1, this example provides three to enter the dual power supply system singly gone out further, its operation principle is with embodiment 1, difference is that interchange is input as three-phase input, and direct current inputs, and namely battery is input as many brachium pontis parallel connection input, DC parallel as three brachium pontis inputs, and this example also can realize input in parallel according to specific design demand single brachium pontis or doube bridge arm; Inversion exports as single-phase output.
As shown in Figure 5, on the basis of embodiment 1, this example also provides three to enter three dual power supply systems gone out further, its operation principle is with embodiment 1, and difference is that interchange is input as three-phase input, and three-phase exports, straight input, namely battery is input as many brachium pontis parallel connection input, and the DC parallel as three brachium pontis inputs, and this example also can according to specific design demand single brachium pontis or doube bridge arm parallel connection input; Inversion exports as three-phase exports.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (7)
1. the dual power supply system with balance brachium pontis, is characterized in that, comprising:
For realizing the AC power of Alternating Current Power Supply;
AC rectification module, described AC rectification module is connected to AC power by interrupteur SW 1, and described AC rectification module realizes by the biphase rectification circuit of ac/dc the rectification and the boosting that exchange input;
DC Module, described DC Module and AC rectification model calling, described DC Module realizes boosting and the charging of battery by two-way step-up/down circuit;
For realizing the inversion module that AC/DC inversion exports, described inverter circuit is connected with DC Module;
And for realizing the balance module of bus balance when direct current supply, described balance module is by interrupteur SW 2 ground connection, and described balance module and AC rectification module realize line sharing;
Under Alternating Current Power Supply pattern, described DC Module is charged the battery by step-down circuit, and described AC rectification module is can the half-bridge circuit of two-way flow; Under direct current supply pattern, described DC Module is boosted to bus by booster circuit, and described balance module realizes line sharing by balance brachium pontis with the AC rectification circuit exchanged when inputting; The step-up/down circuit of described DC Module comprises: battery V1, the positive pole of battery V1 is connected to interrupteur SW 3 and inductance L 2, the negative pole of battery V1 is connected to interrupteur SW 5 and inductance L 3, the two ends of interrupteur SW 3 and interrupteur SW 5 are parallel with electric capacity C5, inductance L 2 is connected to the mid point of field effect transistor/transistor Q3 and field effect transistor/transistor Q6, and inductance L 3 is connected to the mid point of field effect transistor/transistor Q6 and field effect transistor/transistor Q5; Wherein, field effect transistor/transistor Q3, field effect transistor/transistor Q6 and field effect transistor/transistor Q5 is connected in series mutually, and field effect transistor Q3, field effect transistor Q6 and field effect transistor Q5 are parallel with discrete diode.
2. the dual power supply system of band balance brachium pontis according to claim 1, it is characterized in that, the biphase rectification circuit of described AC rectification module is bi-directional half bridge rectifying circuit.
3. the dual power supply system of band balance brachium pontis according to claim 2, it is characterized in that, described bi-directional half bridge rectifying circuit comprises the transistor of serial connection or is parallel with the field effect transistor of discrete diode, and described interrupteur SW 1 and interrupteur SW 2 are connected to the mid point of bi-directional half bridge rectifying circuit by inductance L 1.
4. the dual power supply system of band balance brachium pontis according to claim 3, it is characterized in that, described bi-directional half bridge rectifying circuit comprises the transistor of serial connection; Described AC power is connected to inductance L 1 by interrupteur SW 1, and inductance L 1 is connected to transistor Q1 and exchanges with the mid point of transistor Q2 the rectification inputted with realization.
5. the dual power supply system of band balance brachium pontis according to claim 3, it is characterized in that, described bi-directional half bridge rectifying circuit comprises the field effect transistor of serial connection, and described field effect transistor is parallel with discrete diode; Described AC power is connected to inductance L 1 by interrupteur SW 1, and inductance L 1 is connected to field effect transistor Q1 and exchanges with the mid point of field effect transistor Q2 the rectification inputted with realization.
6. the dual power supply system of the band balance brachium pontis according to claim 1 to 5 any one, it is characterized in that, inductance L 1 is connected to the positive pole of AC power by interrupteur SW 1, the minus earth of AC power; Inductance L 1 is by interrupteur SW 2 ground connection.
7. the dual power supply system of band balance brachium pontis according to claim 6, it is characterized in that, inductance L 1 is connected to the positive pole of AC power by interrupteur SW 1, the minus earth of AC power; Inductance L 1 is by interrupteur SW 2 ground connection.
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| CN201210155422.7A CN102710006B (en) | 2012-05-18 | 2012-05-18 | Double-power supply system with balance bridge arm |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210155422.7A CN102710006B (en) | 2012-05-18 | 2012-05-18 | Double-power supply system with balance bridge arm |
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| CN102710006B true CN102710006B (en) | 2014-12-24 |
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| CN105141153B (en) * | 2015-08-13 | 2018-07-24 | 厦门科华恒盛股份有限公司 | A kind of three phase rectifier booster circuit and its control method and uninterruptible power supply |
| JP6832775B2 (en) * | 2017-03-30 | 2021-02-24 | 本田技研工業株式会社 | Engine generator |
| CN114301291A (en) * | 2021-12-17 | 2022-04-08 | 科华数据股份有限公司 | DC converter and control method |
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| CN202679053U (en) * | 2012-05-18 | 2013-01-16 | 深圳市健网科技有限公司 | A dual power supply system equipped with a balance bridge arm |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CH703453A2 (en) * | 2010-07-15 | 2012-01-31 | Woodward Ids Switzerland Ag | Difference converter as a string converter. |
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| CN1284777A (en) * | 1999-08-13 | 2001-02-21 | 帕尔威电力器具公司 | Multi-mode power converter with equalizer circuit and its operational method |
| CN1531189A (en) * | 2003-03-13 | 2004-09-22 | ���＼�й�ҵ��ʽ���� | Generator |
| CN1934774A (en) * | 2004-03-24 | 2007-03-21 | 伊顿动力品质公司 | Power conversion apparatus with DC bus precharge circuits and methods of operation thereof |
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