CN102593939A - Power source connection converting device and system - Google Patents
Power source connection converting device and system Download PDFInfo
- Publication number
- CN102593939A CN102593939A CN201110004040XA CN201110004040A CN102593939A CN 102593939 A CN102593939 A CN 102593939A CN 201110004040X A CN201110004040X A CN 201110004040XA CN 201110004040 A CN201110004040 A CN 201110004040A CN 102593939 A CN102593939 A CN 102593939A
- Authority
- CN
- China
- Prior art keywords
- power supply
- lead
- out terminal
- input
- group
- 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.)
- Pending
Links
Images
Landscapes
- Rectifiers (AREA)
Abstract
The invention provides a power source connection converting device and a power source connection converting system, relates to the field of electronic circuits, and solves the problems that the utilization ratio of devices is low, the levels of output power decline and the like when a bridge-free PFC (Power Factor Correction) circuit is worked under a direct current power source. The device comprises an input part, an output part and a connection part, wherein the input part at least comprises a group of alternating current input ends and a group of direct current input ends; and the output part at least comprises a group of output ends including a first output terminal, a second output terminal and a third output terminal. With the technical scheme, a boosting circuit is shared by the direct current input and the alternating current input, therefore, the power source connection converting device and the power source connection converting system are suitable for supplying power for the equipment.
Description
Technical field
The present invention relates to electronic circuit field, relate in particular to a kind of power supply and connect conversion equipment and system.
Background technology
High-voltage DC power supply is exactly: provide the DC power supply of electric energy to adopt high-voltage DC power supply (to be different from 48V commonly used; Be generally 240V, even up to 400V), directly to the original power devices that adopts the 220V alternating current input power supplying; Than UPS (Uninterruptible Power Supply; Uninterrupted power supply) system, high-voltage DC power supply has advantages such as reliability height, conversion efficiency is high, Harmonics of Input is little, and it is convenient to possess cutover; Therefore investment, the advantage that O&M cost is low more and more obtain the favor of equipment user.
High-voltage DC power supply requires the support of rear end power consumption equipment.Because the rear end power consumption equipment all is to adopt AC power traditionally, generally comprises two-stage circuit, prime is PFC (Power Factor Correction, a power factor correction) circuit, and the back level is DC/DC circuit or other circuit.
Generally expect that all the former rear end equipment that is used for AC power does not change interface and just can be used for high-voltage DC power supply, type that like this can rear end equipment remains unchanged, and has brought the convenience that uses.
When the rear end power consumption equipment adopts traditional when bridge PFC circuits is arranged; Work under the high-voltage DC power supply; Only there is half device participation work the rectifier bridge unit, but the inductance in the Boost circuit, switching tube and diode component are all participated in work, if the electric current allowance and the thermal margin of rectifier bridge are enough; Can also compatiblely exchange and high-voltage DC power supply, and export identical power.
Bridge PFC circuits is arranged, in any switch periods, three semiconductor device participation work are arranged all on the loop of power circuit; And non-bridge PFC circuits in any switch periods, all has two semiconductor device participation work on the loop of power circuit; Thereby the efficient of non-bridge PFC circuits is higher than bridge PFC circuits is arranged.Industry is brought into use non-bridge PFC circuits gradually, and improved-type non-bridge PFC circuits of diode as shown in Figure 1 or the improved-type circuit non-bridge PFC circuits of electric capacity shown in Figure 2 are the non-bridge PFC circuits topology that industry generally adopts at present.
When the rear end power consumption equipment adopts non-bridge PFC circuits, work under the high-voltage DC power supply, half the inductance is only arranged, switching tube, diode component (L1; S1, D1) participation work, and second half inductance, switching tube; (L2, S2 D2) are in idle state to diode component, and the power device utilance is low.Like this, under the identical input current and radiating condition, during high-voltage DC power supply, the rear end power consumption equipment can only be exported only about half of power, and the power output grade descends.For other DC power supply, also there are the problems referred to above.
Summary of the invention
The invention provides a kind of power supply and connect conversion equipment and system, solved non-bridge PFC circuits and worked under the DC power supply, the power device utilance is low, the problem that the power output grade descends.
A kind of power supply connects conversion equipment, comprises importation, output and coupling part, wherein:
Said importation comprises one group of ac input end and one group of direct-flow input end at least;
Said output comprises one group of output at least, and this group output comprises first lead-out terminal, second lead-out terminal and the 3rd lead-out terminal;
Said coupling part is used for when this group ac input end connects single phase alternating current power supply, the input terminal that inserts this AC power phase line being electrically connected with this first lead-out terminal, and the input terminal that inserts this AC power zero line is electrically connected with this second lead-out terminal; When this group direct-flow input end connects DC power supply, the input terminal that inserts this dc power anode is electrically connected with this first lead-out terminal and this second lead-out terminal, the input terminal that inserts this dc power cathode is electrically connected with the 3rd lead-out terminal.
Preferably, between the lead-out terminal of the input terminal of this group ac input end and this group direct-flow input end with fully separately partial common or fully shared mode be provided with.
Preferably, this group ac input end and this group direct current are gone into end and are connected at said power supply that branch is arranged on the conversion equipment;
The input terminal of ac input end will be organized in said coupling part with fixed form and the input terminal lead-out terminal corresponding with this group output of this group direct-flow input end is electrically connected.
Preferably, this group ac input end and shared first input end of this group direct-flow input end and second input terminal;
When being connected with external power source, the sub-incoming transport phase line of power of this first input end, the zero line of this second input terminal incoming transport power supply; Perhaps, this first input end inserts the positive pole of DC power supply, and this second input terminal inserts the negative pole of DC power supply.
Preferably, said coupling part comprises first change over switch and second change over switch;
When this group ac input end connected single phase alternating current power supply, this first change over switch was communicated with this first input end with this first lead-out terminal; This second change over switch is communicated with this second input terminal with this second lead-out terminal;
When this group direct-flow input end connected DC power supply, this first change over switch was communicated with this first input end with this second lead-out terminal; This second change over switch is communicated with this second input terminal with the 3rd lead-out terminal.
Preferably, said first change over switch and second change over switch are relay.
The present invention also provides a kind of power supply to connect converting system; Comprise the Boost circuit; This system comprises that also the arbitrary described power supply of claim 1 to 6 connects conversion equipment; First lead-out terminal that said power supply connects conversion equipment is connected with the interchange input live wire tie point of said Boost circuit; Second lead-out terminal that said power supply connects conversion equipment is connected with the interchange input zero line tie point of said Boost circuit, and the 3rd lead-out terminal that said power supply connects conversion equipment is connected with the output dc bus negative terminal of said Boost circuit.
The present invention also provides a kind of power supply to connect conversion equipment, comprises importation, output and coupling part, wherein:
Said importation comprises one group of ac input end and one group of direct-flow input end at least;
Said output comprises one group of output at least, and this group output comprises first lead-out terminal, second lead-out terminal, the 3rd lead-out terminal and the 4th lead-out terminal;
Said coupling part; Be used for when this group ac input end connects three-phase alternating-current supply; The input terminal of three phase lines that insert this AC power is electrically connected with this first lead-out terminal, this second lead-out terminal and the 3rd lead-out terminal respectively, the input terminal that inserts this AC power zero line is electrically connected with the 4th lead-out terminal; When this group direct-flow input end connects DC power supply; The input terminal that inserts this dc power anode is electrically connected with this first lead-out terminal, this second lead-out terminal and the 3rd lead-out terminal, the input terminal that inserts this dc power cathode is electrically connected with the 4th lead-out terminal.
Preferably, between the lead-out terminal of the input terminal of this group ac input end and this group direct-flow input end with fully separately partial common or fully shared mode be provided with.
Preferably, this group ac input end and this group direct current are gone into end and are connected at said power supply that branch is arranged on the conversion equipment;
The input terminal of ac input end will be organized in said coupling part with fixed form and the input terminal lead-out terminal corresponding with this group output of this group direct-flow input end is electrically connected.
Preferably, this group ac input end and shared first input end of this group direct-flow input end, second input terminal, the 3rd input terminal and four-input terminal;
When being connected with external power source, the A phase line of the sub-incoming transport power supply of this first input end, the B phase line of this second input terminal incoming transport power supply, the C phase line of the 3rd input terminal incoming transport power supply, the zero line of the sub-incoming transport power supply of this four-input terminal; Perhaps, this first input end, this second input terminal and the 3rd input terminal insert the positive pole of DC power supply, and this four-input terminal inserts the negative pole of DC power supply.
The present invention also provides a kind of power supply to connect converting system; Comprise the Boost circuit; This system comprises that also the arbitrary described power supply of claim 8 to 11 connects conversion equipment; Corresponding with the corresponding phase line of the said Boost circuit respectively interchange input live wire tie point of first lead-out terminal, second lead-out terminal and the 3rd lead-out terminal that said power supply connects conversion equipment is connected, and the 4th output that said power supply connects conversion equipment is connected with the output dc bus negative terminal of said Boost circuit.
The invention provides a kind of power supply and connect conversion equipment and system; Through importation, output and coupling part; External dc power and AC power to input are changed; When obtaining the stabilizing equipment power supply, realized the high-efficiency reliable power source conversion, solved non-bridge PFC circuits and worked in the low excessively problem of power service efficiency under the DC power supply.
Description of drawings
Fig. 1 is the non-bridge PFC scheme electrical block diagram that existing increase improves diode;
Fig. 2 is the non-bridge PFC scheme electrical block diagram that existing increase improves electric capacity;
Fig. 3 is the structural representation that a kind of power supply that embodiments of the invention one provide connects conversion equipment;
Fig. 4 is the structural representation that a kind of power supply that embodiments of the invention one provide connects converting system;
Fig. 5 is the sketch map that a kind of power supply that embodiments of the invention two provide connects the circuit theory of converting system;
Fig. 6 is the non-bridge PFC circuits figure that adopts connected mode 2;
Fig. 7 is in the embodiments of the invention two, and the importation that HVDC input and interchange are imported under the shared input subcase not is connected sketch map with output;
Fig. 8 is in the embodiments of the invention two, and the HVDC input is connected sketch map with the importation that interchange is imported under the shared input subcase with output;
Fig. 9 is the structural representation that a kind of power supply that embodiments of the invention three provide connects conversion equipment;
Figure 10 is the structural representation that a kind of power supply that embodiments of the invention three provide connects converting system;
Figure 11 is the structural representation that a kind of power supply that embodiments of the invention four provide connects converting system;
Figure 12 is the three-phase pfc circuit figure that adopts connected mode 2;
Figure 13 is in the embodiments of the invention four, and the importation that HVDC input and interchange are imported under the shared input subcase not is connected sketch map with output;
In Figure 14 embodiments of the invention four, the HVDC input is connected sketch map with the importation that interchange is imported under the shared input subcase with output.
Embodiment
Because pfc circuit works under the high-voltage DC power supply, the half the circuit elements device participation work of only having an appointment, and then cause power output low excessively.In order to address the above problem, embodiments of the invention provide a kind of power supply to connect conversion equipment and system.Below in conjunction with accompanying drawing, embodiments of the invention are specified.
At first, embodiments of the invention one are described.
The embodiment of the invention provides a kind of power supply to connect conversion equipment, and its structure is as shown in Figure 3, comprises importation, output and coupling part, wherein:
Said importation comprises one group of ac input end and one group of direct-flow input end at least;
Said output comprises one group of output at least, and this group output comprises first lead-out terminal, second lead-out terminal and the 3rd lead-out terminal;
Said coupling part is used for when this group ac input end connects single phase alternating current power supply, the input terminal that inserts this AC power phase line being electrically connected with this first lead-out terminal, and the input terminal that inserts this AC power zero line is electrically connected with this second lead-out terminal; When this group direct-flow input end connects DC power supply, the input terminal that inserts this dc power anode is electrically connected with this first lead-out terminal and this second lead-out terminal, the input terminal that inserts this dc power cathode is electrically connected with the 3rd lead-out terminal.
Preferably, between the lead-out terminal of the input terminal of this group ac input end and this group direct-flow input end with fully separately partial common or fully shared mode be provided with.
Preferably, this group ac input end and this group direct current are gone into end and are connected at said power supply that branch is arranged on the conversion equipment;
The input terminal of ac input end will be organized in said coupling part with fixed form and the input terminal lead-out terminal corresponding with this group output of this group direct-flow input end is electrically connected.
Preferably, this group ac input end and shared first input end of this group direct-flow input end and second input terminal;
When being connected with external power source, the sub-incoming transport phase line of power of this first input end, the zero line of this second input terminal incoming transport power supply; Perhaps, this first input end inserts the positive pole of DC power supply, and this second input terminal inserts the negative pole of DC power supply.
Preferably, said coupling part comprises first change over switch and second change over switch;
When this group ac input end connected single phase alternating current power supply, this first change over switch was communicated with this first input end with this first lead-out terminal; This second change over switch is communicated with this second input terminal with this second lead-out terminal;
When this group direct-flow input end connected DC power supply, this first change over switch was communicated with this first input end with this second lead-out terminal; This second change over switch is communicated with this second input terminal with the 3rd lead-out terminal.
Preferably, said first change over switch and second change over switch are relay.
The embodiment of the invention also provides a kind of power supply to connect converting system; Its structure is as shown in Figure 4; Comprise that the Boost circuit is connected conversion equipment with above-mentioned power supply; First lead-out terminal that said power supply connects conversion equipment is connected with the interchange input live wire tie point of said Boost circuit; Second lead-out terminal that said power supply connects conversion equipment is connected with the interchange input zero line tie point of said Boost circuit, and the 3rd lead-out terminal that said power supply connects conversion equipment is connected with the output dc bus negative terminal of said Boost circuit.
The embodiment of the invention provides a kind of power supply to connect conversion equipment and system; Through importation, output and coupling part; External dc power and AC power to input are changed; When obtaining the stabilizing equipment power supply, realized the high-efficiency reliable power source conversion, solved non-bridge PFC circuits and worked in the low excessively problem of power service efficiency under the DC power supply.
Below in conjunction with accompanying drawing, embodiments of the invention two are described.
Embodiments of the invention provide a kind of power supply to connect converting system, and this system can all convert DC power supply or AC power into be fit to rear end equipment working power, and guarantee higher power output according to the difference of input power supply.In the embodiments of the invention, be that example describes with single phase alternating current power supply and high-voltage DC power supply.
The related Boost circuit of the embodiment of the invention is specially a non-bridge PFC circuits, and this circuit has two and exchanges incoming junction, specifically referring to Fig. 1 and Fig. 2.
In the embodiment of the invention; Before non-bridge PFC circuits, increase a power supply and connected conversion equipment; Supply unit comprises that the importation (comprises one group of ac input end and one group of direct-flow input end at least; Ac input end and direct-flow input end include a plurality of input terminals), output (comprise one group of output at least, this group output comprises first lead-out terminal, second lead-out terminal and the 3rd lead-out terminal) and the coupling part that is connected importation and output.The input that power supply connects conversion equipment comprises: AC power input AC-L (live wire); The positive input DC+ of AC-N (zero line) and/or high-voltage DC power supply (HVDC just); The negative input DC-of high-voltage DC power supply (HVDC is negative); Each item input all is connected with an input terminal, and also comprises a no connecting pin; The output that power supply connects conversion equipment comprises: the A of non-bridge PFC circuits (being former interchange input L tie point); B (being former interchange input N tie point), U-(being the output dc bus negative terminal of pfc circuit) 3 points, each item output all is connected with a lead-out terminal; Wherein, The lead-out terminal that links to each other with the A of non-bridge PFC circuits is first lead-out terminal, and the lead-out terminal that links to each other with the B of non-bridge PFC circuits is second lead-out terminal, and what link to each other with U-is the 3rd lead-out terminal.
When this group ac input end connects single phase alternating current power supply, the input terminal that inserts this AC power phase line is electrically connected with this first lead-out terminal, the input terminal that inserts this AC power zero line is electrically connected with this second lead-out terminal; When this group direct-flow input end connects DC power supply, the input terminal that inserts this dc power anode is electrically connected with this first lead-out terminal and this second lead-out terminal, the input terminal that inserts this dc power cathode is electrically connected with the 3rd lead-out terminal.
Be handled easily, go back two kinds of connected modes that the definable power supply connects coupling part in the conversion equipment, that is: during AC power, be connected mode 1 (A connects L, and B connects N, and U-does not connect), the working method of non-bridge PFC circuits is constant; During high-voltage DC power supply, be connected mode 2 (A connects DC+, and B connects DC+, and U-connects DC-), non-bridge PFC circuits becomes the Boost circuit of two-way parallel connection, further, can carry out work by the crisscross parallel pattern.Under above-mentioned two kinds of connected modes, the annexation of input terminal and lead-out terminal is referring to table 1.
Table 1
Fig. 5 is that the power supply that the embodiment of the invention provides connects the principle schematic that conversion equipment is applied to not have bridge Boost circuit.It is improved-type wherein not have bridge Boost circuit and can be diode as shown in Figure 1 electric capacity improved-type or as shown in Figure 2.To the circuit shown in Fig. 5, describe below about different connected modes.
Under the Alternating Current Power Supply condition, when adopting connected mode 1, non-bridge PFC circuits is realized the PFC function, and the operate as normal of circuit is not affected, and operation principle and Fig. 1 or no bridge Boost shown in Figure 2 are identical, repeat no more at this.
Under HVDC input condition of power supply, when adopting connected mode 2, circuit connecting relation as shown in Figure 6; Still adopt connected mode 1 to compare with this moment; Variation has taken place in the annexation of Boost circuit, and two-phase Boost circuit is connected in parallel to the high-voltage DC power supply input, and power can be shared by two-phase Boost circuit jointly; This moment, the current stress and the thermal stress of device reduced half, and the Boost converter can be exported higher power; And in any switch periods, every road Boost circuit only has a semiconductor devices participation job, and efficient is higher than the non-bridge PFC topology.Through switch unit, optimized circuit connecting relation, promoted the power output grade and the service efficiency of Boost converter.
Whole advantages such as the power supply that the two Boost circuit that are in parallel constitute connects the mode of operation of conversion equipment can be controlled flexibly, for example can realize crisscross parallel control, and it is little to possess crisscross parallel topology ripple, and stresses of parts is low.
Power supply connects the conversion equipment input terminal, and to dispose two kinds of connectivity scenarios available, and a kind of to be the HVDC input import that shared input is sub, as shown in Figure 7 with exchanging; A kind of is HVDC input and exchanges that to import shared input sub, as shown in Figure 8.
When adopting power supply shown in Figure 8 to connect the conversion equipment connected mode, shared first input end of ac input end and direct-flow input end and second input terminal.That is, shared first input end of the DC+ of the AC-L of AC power input and direct current input exchanges the AC-N of input and shared second input terminal of DC-of high-voltage DC power supply input.This power supply connects conversion equipment can be positioned over power consumption equipment inside, need not change the power consumption equipment external interface, can realize AC power or high-voltage DC power supply, has bigger practical value.
Related power supply connects conversion equipment in the embodiment of the invention, when externally power supply changes, can through manual control or automatically control start the coupling part and accomplish the switching that connects according to the difference of external power supply type.If it is manual control that power supply connects conversion equipment,, then need manual switchover like switch; But preferably automatic power connects conversion equipment, like controllable devices, and relay etc.Be that example describes below with the relay, the identical operations mode also can be applicable in the embodiment of non-relay.
Relay has normally-closed contact and normally opened contact, and normally-closed contact connects by connected mode 1, and normally opened contact connects by connected mode 2.When being input as AC power, relay keeps normally-closed contact closed, need not any action.When being input as high-voltage DC power supply, relay need be changed into connected mode 2, and normally opened contact is closed, and normally-closed contact breaks off.Particularly, relay can have following several kinds of control modes.
Mode 1: increase the accessory power supply of one road high-voltage DC power supply, after this accessory power supply works together, give the driving winding power supply of relay; Control relay switches to connected mode 2 from connected mode 1, like this, only needs to adopt the relay that exchanges the contact; The problems such as sparking that do not have the HVDC contact to break off; The relay volume that increases is very little, and the cost increase also seldom, and is very little for the power density and the cost impact of power supply.
Mode 2: need not independently accessory power supply; Only need in the original accessory power supply of former pfc circuit, increase the input of one road high-voltage DC power supply, after accessory power supply works together, the sampling of input voltage judged in conjunction with the control circuit of former pfc circuit; Confirm that pfc circuit is AC power or high-voltage DC power supply; If be operated in the high voltage direct current source module, send control signal by control circuit, the accessory power supply power supply; Drive the driving winding of relay, control relay switches to connected mode 2 from connected mode 1.
Mode 3:, then can this driving winding directly be connected the input terminal of high-voltage DC power supply, i.e. DC+/DC-if the driving winding of relay is supported high-voltage DC power supply.When the input of high-voltage DC power supply exists, can directly drive relay and switch to connected mode 2 from connected mode 1.
Need to prove that relay also can adopt other modes to start, and is not limited to above several kinds of schemes.
Below, embodiments of the invention three are described.
The embodiment of the invention provides a kind of power supply to connect conversion equipment, and its structure is as shown in Figure 9, comprises importation, output and coupling part, wherein:
Said importation comprises one group of ac input end and one group of direct-flow input end at least;
Said output comprises one group of output at least, and this group output comprises first lead-out terminal, second lead-out terminal, the 3rd lead-out terminal and the 4th lead-out terminal;
Said coupling part; Be used for when this group ac input end connects three-phase alternating-current supply; The input terminal of three phase lines that insert this AC power is electrically connected with this first lead-out terminal, this second lead-out terminal and the 3rd lead-out terminal respectively, the input terminal that inserts this AC power zero line is electrically connected with the 4th lead-out terminal; When this group direct-flow input end connects DC power supply; The input terminal that inserts this dc power anode is electrically connected with this first lead-out terminal, this second lead-out terminal and the 3rd lead-out terminal, the input terminal that inserts this dc power cathode is electrically connected with the 4th lead-out terminal.
Preferably, between the lead-out terminal of the input terminal of this group ac input end and this group direct-flow input end with fully separately partial common or fully shared mode be provided with.
Preferably, this group ac input end and this group direct current are gone into end and are connected at said power supply that branch is arranged on the conversion equipment;
The input terminal of ac input end will be organized in said coupling part with fixed form and the input terminal lead-out terminal corresponding with this group output of this group direct-flow input end is electrically connected.
Preferably, this group ac input end and shared first input end of this group direct-flow input end, second input terminal, the 3rd input terminal and four-input terminal;
When being connected with external power source, the A phase line of the sub-incoming transport power supply of this first input end, the B phase line of this second input terminal incoming transport power supply, the C phase line of the 3rd input terminal incoming transport power supply, the zero line of the sub-incoming transport power supply of this four-input terminal; Perhaps, this first input end, this second input terminal and the 3rd input terminal insert the positive pole of DC power supply, and this four-input terminal inserts the negative pole of DC power supply.
The embodiment of the invention also provides a kind of power supply to connect converting system; Its structure is shown in figure 10; Comprise that the Boost circuit is connected conversion equipment with above-mentioned power supply; Corresponding with the corresponding phase line of the said Boost circuit respectively interchange input live wire tie point of first lead-out terminal, second lead-out terminal and the 3rd lead-out terminal that said power supply connects conversion equipment is connected, and the 4th output that said power supply connects conversion equipment is connected with the output dc bus negative terminal of said Boost circuit.
The embodiment of the invention provides a kind of power supply to connect conversion equipment and system; Through importation, output and coupling part; External dc power and AC power to input are changed; When obtaining the stabilizing equipment power supply, realized the high-efficiency reliable power source conversion, solved non-bridge PFC circuits and worked in the low excessively problem of power delivery efficiency under the DC power supply.
Below, embodiments of the invention four are described.
Embodiments of the invention provide a kind of power supply to connect converting system, and this system can all convert DC power supply or AC power into be fit to rear end equipment working power, and guarantee higher power output according to the difference of input power supply.In the embodiment of the invention, be that example describes with three-phase alternating-current supply and high-voltage DC power supply.
In the embodiment of the invention, said Boost circuit is specially a three-phase pfc circuit.Before the three-phase pfc circuit, increase a power supply and connected conversion equipment; The importation that power supply connects conversion equipment comprises: AC power input AC_A (A phase), AC_B (B phase), AC_C (C phase), AC_N (N line) and/or high-voltage DC power supply input DC+ (HVDC just); DC-(HVDC is negative), each item input all is connected with an input terminal; The output that power supply connects conversion equipment comprises: the A of three-phase pfc circuit (being that the continuous contact of A is imported in former interchange), B (being the continuous contact of former interchange input B), C (being the continuous contact of former interchange input C), U-(being the output dc bus negative terminal of pfc circuit) 4 points; Each item output all is connected with a lead-out terminal; Wherein, the lead-out terminal of the A of access three-phase pfc circuit, B, the input of C three-phase is followed successively by first lead-out terminal, second lead-out terminal and the 3rd lead-out terminal.
When this group ac input end connects single phase alternating current power supply; The input terminal of three phase lines that insert this AC power is electrically connected with this first lead-out terminal, this second lead-out terminal and the 3rd lead-out terminal respectively, the input terminal that inserts this AC power zero line is electrically connected with the 4th lead-out terminal; When this group direct-flow input end connects DC power supply; The input terminal that inserts this dc power anode is electrically connected with this first lead-out terminal, this second lead-out terminal and the 3rd lead-out terminal, the input terminal that inserts this dc power cathode is electrically connected with the 4th lead-out terminal.
Be handled easily, go back two kinds of connected modes that the definable power supply connects conversion equipment, during AC power, be connected mode 1 (A connects AC_A, and B connects AC_B, and C connects AC_C, and U-connects AC_N), the working method of three-phase pfc circuit is constant; During high-voltage DC power supply, be connected mode 2 (A connects DC+, and B connects DC+, and C connects DC+, and U-connects DC-), the three-phase pfc circuit becomes the Boost circuit of three tunnel parallel connections, and further, the circuit of these three tunnel parallel connections can carry out work by the crisscross parallel pattern.Under above-mentioned two kinds of connected modes, the annexation of input terminal and lead-out terminal is referring to table 2.
Table 2
Figure 11 is the principle schematic of the power supply that provides of the embodiment of the invention when connecting conversion equipment and being applied to the three-phase pfc circuit.To the circuit shown in Figure 11, describe below about different connected modes.
Exchanging under the input condition of power supply, when adopting connected mode 1, operation principle is identical with the common three-phase pfc circuit scheme of prior art, is not affected, and repeats no more at this.
Under HVDC input condition of power supply; When adopting connected mode 2, circuit connecting relation is shown in figure 12, still adopts connected mode 1 to compare with this moment; Variation has taken place in the annexation of three-phase pfc circuit, promptly has three road Boost circuit to be connected in parallel to HVDC input end; Power can be shared by three road Boost circuit jointly; Participation work is compared with only there being one road pfc circuit to be connected to HVDC input end; The current stress and the thermal stress of device reduce greatly, and reliability improves, and power supply connection converting system can be exported higher power simultaneously.Cross switch unit, optimized circuit connecting relation, promoted power output grade and efficient.
Whole advantages such as the mode of operation of the Boost circuit of parallel three phase can be controlled flexibly, for example can realize crisscross parallel control, and it is little to possess crisscross parallel topology ripple, and stresses of parts is low.
Power supply connects the practical implementation way of conversion equipment in embodiment illustrated in fig. 11, and the implementing method that is connected conversion equipment with power supply shown in Figure 5 is basic identical, does brief description at this.
Power supply connects the conversion equipment input terminal has two kinds of connectivity scenarios available, and a kind of to be the HVDC input import that shared input is sub, shown in figure 13 with exchanging; A kind of is HVDC input and exchanges that to import shared input sub, shown in figure 14.
When adopting power supply shown in Figure 14 to connect the conversion equipment connected mode, shared first input end of ac input end and direct-flow input end, second input terminal, the 3rd input terminal and four-input terminal.Promptly; Shared first input end of the AC_A of AC power and the DC+ of high-voltage DC power supply; Shared second input terminal of the AC_B of AC power and the DC+ of high-voltage DC power supply; Shared the 3rd input terminal of the AC_C of AC power and the DC+ of high-voltage DC power supply, shared four-input terminal of the AC_N of AC power and the DC-of high-voltage DC power supply.This power supply connects conversion equipment can be positioned over power consumption equipment inside, only need change external cabling, need not change the power consumption equipment external interface, can realize AC power or high-voltage DC power supply, has bigger practical value.
Embodiments of the invention provide a kind of power supply to connect conversion equipment and system; Do not increase under the condition of inductance, switching tube and diode component quantity and capacity; Connect conversion equipment through increasing a power supply,, change Boost circuit topology syndeton through switching controls; Can both normal use in order to realize that this type of power supply connects converting system in AC power or two kinds of power supplies of high-voltage DC power supply occasion, make that the Boost circuit can compatible AC power and high-voltage DC power supply.And when high-voltage DC power supply, connect conversion equipment through power supply and change circuit connecting relation, make the Boost circuit become multi-channel parallel Boost circuit and carry out work; Under identical input current and radiating condition, can export higher power, and in any switch periods; Every road Boost circuit; A semiconductor device participation job is only arranged, effectively reduce the current stress and the thermal stress of device in the converter, improved fan-out capability and reliability.
The all or part of step that the one of ordinary skill in the art will appreciate that the foregoing description program circuit that can use a computer is realized; Said computer program can be stored in the computer-readable recording medium; Said computer program (like system, unit, device etc.) on the relevant hardware platform is carried out; When carrying out, comprise one of step or its combination of method embodiment.
Alternatively, all or part of step of the foregoing description also can use integrated circuit to realize, these steps can be made into integrated circuit modules one by one respectively, perhaps a plurality of modules in them or step is made into the single integrated circuit module and realizes.Like this, the present invention is not restricted to any specific hardware and software combination.
Each device/functional module/functional unit in the foregoing description can adopt the general calculation device to realize, they can concentrate on the single calculation element, also can be distributed on the network that a plurality of calculation element forms.
Each device/functional module/functional unit in the foregoing description is realized with the form of software function module and during as independently production marketing or use, can be stored in the computer read/write memory medium.The above-mentioned computer read/write memory medium of mentioning can be a read-only memory, disk or CD etc.
Any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses, and the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the described protection range of claim.
Claims (12)
1. a power supply connects conversion equipment, it is characterized in that, comprises importation, output and coupling part, wherein:
Said importation comprises one group of ac input end and one group of direct-flow input end at least;
Said output comprises one group of output at least, and this group output comprises first lead-out terminal, second lead-out terminal and the 3rd lead-out terminal;
Said coupling part is used for when this group ac input end connects single phase alternating current power supply, the input terminal that inserts this AC power phase line being electrically connected with this first lead-out terminal, and the input terminal that inserts this AC power zero line is electrically connected with this second lead-out terminal; When this group direct-flow input end connects DC power supply, the input terminal that inserts this dc power anode is electrically connected with this first lead-out terminal and this second lead-out terminal, the input terminal that inserts this dc power cathode is electrically connected with the 3rd lead-out terminal.
2. connect conversion equipment based on the described power supply of claim 1, it is characterized in that, between the lead-out terminal of the input terminal of this group ac input end and this group direct-flow input end to separate fully or partial common or complete shared mode are provided with.
3. power supply according to claim 1 connects conversion equipment, it is characterized in that,
This group ac input end and this group direct current are gone into end and are connected at said power supply that branch is arranged on the conversion equipment;
The input terminal of ac input end will be organized in said coupling part with fixed form and the input terminal lead-out terminal corresponding with this group output of this group direct-flow input end is electrically connected.
4. power supply according to claim 1 connects conversion equipment, it is characterized in that:
This group ac input end and shared first input end of this group direct-flow input end and second input terminal;
When being connected with external power source, the sub-incoming transport phase line of power of this first input end, the zero line of this second input terminal incoming transport power supply; Perhaps, this first input end inserts the positive pole of DC power supply, and this second input terminal inserts the negative pole of DC power supply.
5. power supply according to claim 4 connects conversion equipment, it is characterized in that said coupling part comprises first change over switch and second change over switch;
When this group ac input end connected single phase alternating current power supply, this first change over switch was communicated with this first input end with this first lead-out terminal; This second change over switch is communicated with this second input terminal with this second lead-out terminal;
When this group direct-flow input end connected DC power supply, this first change over switch was communicated with this first input end with this second lead-out terminal; This second change over switch is communicated with this second input terminal with the 3rd lead-out terminal.
6. power supply according to claim 5 connects conversion equipment, it is characterized in that said first change over switch and second change over switch are relay.
7. a power supply connects converting system; Comprise (Boost) circuit that boosts; It is characterized in that; This system comprises that also the arbitrary described power supply of claim 1 to 6 connects conversion equipment; First lead-out terminal that said power supply connects conversion equipment is connected with the interchange input live wire tie point of said Boost circuit, and second lead-out terminal that said power supply connects conversion equipment is connected with the interchange input zero line tie point of said Boost circuit, and the 3rd lead-out terminal that said power supply connects conversion equipment is connected with the output dc bus negative terminal of said Boost circuit.
8. a power supply connects conversion equipment, it is characterized in that, comprises importation, output and coupling part, wherein:
Said importation comprises one group of ac input end and one group of direct-flow input end at least;
Said output comprises one group of output at least, and this group output comprises first lead-out terminal, second lead-out terminal, the 3rd lead-out terminal and the 4th lead-out terminal;
Said coupling part; Be used for when this group ac input end connects three-phase alternating-current supply; The input terminal of three phase lines that insert this AC power is electrically connected with this first lead-out terminal, this second lead-out terminal and the 3rd lead-out terminal respectively, the input terminal that inserts this AC power zero line is electrically connected with the 4th lead-out terminal; When this group direct-flow input end connects DC power supply; The input terminal that inserts this dc power anode is electrically connected with this first lead-out terminal, this second lead-out terminal and the 3rd lead-out terminal, the input terminal that inserts this dc power cathode is electrically connected with the 4th lead-out terminal.
9. connect conversion equipment based on the described power supply of claim 8, it is characterized in that, between the lead-out terminal of the input terminal of this group ac input end and this group direct-flow input end to separate fully or partial common or complete shared mode are provided with.
10. power supply according to claim 8 connects conversion equipment, it is characterized in that,
This group ac input end and this group direct current are gone into end and are connected at said power supply that branch is arranged on the conversion equipment;
The input terminal of ac input end will be organized in said coupling part with fixed form and the input terminal lead-out terminal corresponding with this group output of this group direct-flow input end is electrically connected.
11. power supply according to claim 8 connects conversion equipment, it is characterized in that:
This group ac input end and shared first input end of this group direct-flow input end, second input terminal, the 3rd input terminal and four-input terminal;
When being connected with external power source, the A phase line of the sub-incoming transport power supply of this first input end, the B phase line of this second input terminal incoming transport power supply, the C phase line of the 3rd input terminal incoming transport power supply, the zero line of the sub-incoming transport power supply of this four-input terminal; Perhaps, this first input end, this second input terminal and the 3rd input terminal insert the positive pole of DC power supply, and this four-input terminal inserts the negative pole of DC power supply.
12. a power supply connects converting system; Comprise the Boost circuit; It is characterized in that; This system comprises that also the arbitrary described power supply of claim 8 to 11 connects conversion equipment, and corresponding with the corresponding phase line of the said Boost circuit respectively interchange input live wire tie point of first lead-out terminal, second lead-out terminal and the 3rd lead-out terminal that said power supply connects conversion equipment is connected, and the 4th output that said power supply connects conversion equipment is connected with the output dc bus negative terminal of said Boost circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110004040XA CN102593939A (en) | 2011-01-10 | 2011-01-10 | Power source connection converting device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110004040XA CN102593939A (en) | 2011-01-10 | 2011-01-10 | Power source connection converting device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102593939A true CN102593939A (en) | 2012-07-18 |
Family
ID=46482261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110004040XA Pending CN102593939A (en) | 2011-01-10 | 2011-01-10 | Power source connection converting device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102593939A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107579650A (en) * | 2017-08-21 | 2018-01-12 | 上海空间电源研究所 | Multi-source fusion power conversion topologies circuit and its transformation topology method |
| CN108400706A (en) * | 2018-04-25 | 2018-08-14 | 华南理工大学 | A kind of high efficiency interleaved parallel PFC converter |
| CN108667323A (en) * | 2018-06-25 | 2018-10-16 | 广州金升阳科技有限公司 | Alternating current-direct current input adaptive switching power circuit |
| CN112687458A (en) * | 2019-10-18 | 2021-04-20 | 联合汽车电子有限公司 | Multiphase staggered parallel integrated inductor and magnetic integrated circuit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1248812A (en) * | 1998-09-18 | 2000-03-29 | 冉德君 | Multiplex output multi-source power supply |
| CN1797912A (en) * | 2004-12-14 | 2006-07-05 | 国际整流器公司 | Emi noise-reduction circuit and method for no-bridge power factor correction circuit |
-
2011
- 2011-01-10 CN CN201110004040XA patent/CN102593939A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1248812A (en) * | 1998-09-18 | 2000-03-29 | 冉德君 | Multiplex output multi-source power supply |
| CN1797912A (en) * | 2004-12-14 | 2006-07-05 | 国际整流器公司 | Emi noise-reduction circuit and method for no-bridge power factor correction circuit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107579650A (en) * | 2017-08-21 | 2018-01-12 | 上海空间电源研究所 | Multi-source fusion power conversion topologies circuit and its transformation topology method |
| CN108400706A (en) * | 2018-04-25 | 2018-08-14 | 华南理工大学 | A kind of high efficiency interleaved parallel PFC converter |
| CN108667323A (en) * | 2018-06-25 | 2018-10-16 | 广州金升阳科技有限公司 | Alternating current-direct current input adaptive switching power circuit |
| CN108667323B (en) * | 2018-06-25 | 2024-05-17 | 广州金升阳科技有限公司 | AC/DC input self-adaptive switch power supply circuit |
| CN112687458A (en) * | 2019-10-18 | 2021-04-20 | 联合汽车电子有限公司 | Multiphase staggered parallel integrated inductor and magnetic integrated circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102368631B (en) | Efficient and reliable power supply architecture of data center electronic equipment | |
| Pires et al. | DC–DC converters for bipolar microgrid voltage balancing: A comprehensive review of architectures and topologies | |
| CN104078992A (en) | Energy-storage voltage-balanced power electronic electric energy converting system and control method thereof | |
| CN103178549A (en) | Control system and control method for photovoltaic auxiliary grid-connected power generation | |
| CN103187785B (en) | A kind of UPS module and ups system | |
| CN101202461A (en) | Main circuit structure for changing storage battery into charge and discharge | |
| CN101409453B (en) | Uninterruption power supply | |
| CN102394510A (en) | Efficient and reliable power supply architecture of data center information technology (IT) equipment | |
| CN213585162U (en) | AC/DC power supply structure of data center | |
| CN209217732U (en) | Alternating current-direct current mixing micro-capacitance sensor energy-storage system | |
| CN211790770U (en) | Original electric power capacity-increasing voltage-stabilizing system of base station | |
| CN112886594A (en) | AC/DC power supply structure of data center | |
| CN103715754A (en) | UPS and power supply system | |
| CN102593939A (en) | Power source connection converting device and system | |
| US20220200290A1 (en) | Power System | |
| CN104638688A (en) | Single-phase uninterrupted power supply circuit and three-phase uninterrupted power supply circuit | |
| CN202353297U (en) | Data center IT device power supply system and standby high voltage DC power supply | |
| CN101494388B (en) | Multi-power input transformer device and non-outages power supply system | |
| CN212435428U (en) | Uninterruptible power supply | |
| CN203218892U (en) | Photovoltaic auxiliary grid-connected power generation controller and power generation system using same | |
| CN204559131U (en) | Be connected to the transformer and distribution power station of energy-storage system | |
| CN107465258A (en) | A kind of electric power system and method for IDC computer rooms | |
| CN216959346U (en) | Alternating current-direct current microgrid router system for comprehensive energy station | |
| CN105244884A (en) | Flexible-access intelligent household interface | |
| CN104821594A (en) | Transformation and distribution station connected with energy storage system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120718 |