CN102468758A - High-voltage power supply module and its applicable power supply system - Google Patents
High-voltage power supply module and its applicable power supply system Download PDFInfo
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- CN102468758A CN102468758A CN201010537460XA CN201010537460A CN102468758A CN 102468758 A CN102468758 A CN 102468758A CN 201010537460X A CN201010537460X A CN 201010537460XA CN 201010537460 A CN201010537460 A CN 201010537460A CN 102468758 A CN102468758 A CN 102468758A
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Abstract
The invention relates to a high-voltage power supply module, which is applicable to a power supply system and at least comprises a preceding stage power supply conversion circuit, a first switching circuit and a second switching circuit, wherein the preceding stage power supply conversion circuit is used for receiving an input power supply and converting the input power supply into a bus voltage for output; the first post-stage circuit receives the bus voltage and outputs a first voltage, and is provided with a first output negative terminal; the second post-stage circuit receives the bus voltage and outputs a second voltage, and is provided with a second output positive end which is connected with the first output negative end and is provided with a connecting end; the equipment grounding end is connected with the connecting end; and the control unit is connected with the first post-stage circuit and the second post-stage circuit and is used for respectively outputting a first control signal and a second control signal to the first post-stage circuit and the second post-stage circuit according to the first voltage and the second voltage so as to respectively control the output voltage values of the first voltage and the second voltage. The invention can reduce the requirements on the safety regulation and the safety distance of the high-voltage power supply module.
Description
Technical field
The present invention relates to a kind of high voltage source supply module, the electric power system that relates in particular to a kind of high voltage source supply module and be suitable for.
Background technology
In order to reduce the power loss on the circuit and to improve the service efficiency of power supply unit, the supply power mode of HVDC power supply is used in the electric power system at leisure.The HVDC electric power system provides to the load at electric power, must not do the action of AC-DC conversion again, thereby can effectively increase work efficiency.In addition; Under long situation apart from distribution, the HVDC electric power system can be more more cheap than the cost of existing common ac-powered system, and its power loss also can be less relatively; And can support lower power loss, so the HVDC electric power system is present important development trend.
Usually comprise a power supply unit in the HVDC electric power system, and the isolated form transformer is one of necessary element of composition of power supply unit.When transformer is done isolation applications; Normally for the requirement of product safety (Safety); And the test of safety can be via (the Underwriter Laboratories Inc of for example U.S.'s product safety standard evolution and certification authority; UL), (the Canadian StandardsAssociation of Canadian Standards Association; CSA) or German safety (it carries out the withstand voltage test of high pressure (Hi-Pot) for the product that high-low pressure difference is arranged for Technisher Uberwachungs-Verein, the TUV) mensuration of German Bureau of Technical Supervision.
See also Fig. 1 of the present invention, it is the structural representation of known power supply unit.As shown in Figure 1, known power supply unit 1 comprises an isolated form transformer 11, in order to intercept input 12 and output 13; And for the safety of protecting the user also holds 14 to be connected with an equipment ground output plus terminal 131 or the output negative terminal 132 of the secondary side of isolated form transformer 11; So that secondary side output with respect to the voltage of equipment ground end 14 be Vo or-Vo, the danger in order to avoid causing the user to get an electric shock when isolated form transformer 11 faults that is to say; When isolated form transformer 11 faults take place; The fault current that the is produced equipment ground end 14 of can flowing through gets an electric shock with the person of avoiding the use of, and then reaches protection user's purpose.
Yet,, therefore can cause output voltage V because known device earth terminal 14 is connected directly to output plus terminal 131 or output negative terminal 132
oOr-V
oMagnitude of voltage up to hundreds of volt; For example 400 volts; Feasible safety for power supply unit 1 is comparatively strict apart from requiring with peace, and difficult relatively also less relatively with selected element in the selection of its inner element, thereby will promote production cost; And the volume of general high pressure resistant element is all bigger, is prone to cause the excessive problem of power supply unit 1 overall volume.
Therefore, how to develop and a kind ofly can improve problem and the high voltage source supply module of defective and the electric power system that is suitable for thereof that above-mentioned known technology meets with, be the problem of solution that various equivalent modifications of the present invention presses in fact.
Summary of the invention
The object of the invention is the electric power system that a kind of high voltage source supply module is provided and is suitable for; It is through being connected the link after the outlet side series connection of first late-class circuit and second late-class circuit with the equipment ground end; In order to the output negative terminal of the output plus terminal that reduces by first late-class circuit or second late-class circuit magnitude of voltage, can reduce requirement whereby for safety with the peace distance of high voltage source supply module to the equipment ground end.In addition, comparatively easy and selectable element is also more relatively for the selection of the inner element of high voltage source supply module, and then reach the purpose that reduces production costs and dwindle high voltage source supply module overall volume.
For reaching above-mentioned purpose, of the present invention one than broad sense embodiment for a kind of high voltage source supply module is provided, be applicable to an electric power system, comprise the prime power-switching circuit at least, receive an input power supply and also convert bus voltage output to; First late-class circuit receives bus voltage and exports first voltage, and has the first output negative terminal; Second late-class circuit receives bus voltage and also exports second voltage, and has second output plus terminal, and this second output plus terminal and first is exported negative terminal and is connected and has a link; The equipment ground end is connected with link; And control unit; Be connected with first late-class circuit and second late-class circuit; With according to first voltage and second voltage and export first control signal and second respectively and control signal to first late-class circuit and second late-class circuit, to control the output voltage values of first voltage and second voltage respectively.
For reaching above-mentioned purpose; Of the present invention another than broad sense embodiment for a kind of electric power system is provided; At least comprise a plurality of high voltage source supply modules, and each this high voltage source supply module comprises the prime power-switching circuit at least, receive an input power supply and also convert bus voltage output to; First late-class circuit receives bus voltage and exports first voltage and first electric current, and has the first output negative terminal; Second late-class circuit receives bus voltage and also exports second voltage and second electric current, and has second output plus terminal, and this second output plus terminal and first is exported negative terminal and is connected and has a link; The equipment ground end is connected with link; And control unit; Be connected with first late-class circuit and second late-class circuit; With according to first voltage and second voltage and export first control signal and second respectively and control signal to first late-class circuit and second late-class circuit, to control the output voltage values of first voltage and second voltage respectively; And communication interface, connect each this control unit respectively; Wherein, the outlet side of each this high voltage source supply module is connected in parallel, and links up through communication interface between the control unit that comprised of a plurality of high voltage source supply module, to adjust the first corresponding electric current and the output current value of second electric current.
For reaching above-mentioned purpose, of the present invention another than broad sense embodiment for a kind of electric power system is provided, comprise the high voltage source supply module at least, comprise the prime power-switching circuit at least, receive an input power supply and also convert bus voltage output to; First late-class circuit receives bus voltage and exports first voltage, and has the first output negative terminal; Second late-class circuit receives bus voltage and also exports second voltage, and has second output plus terminal, and this second output plus terminal and first is exported negative terminal and is connected and has a link; The equipment ground end is connected with link; And control unit; Be connected with first late-class circuit and second late-class circuit; With according to first voltage and second voltage and export first control signal and second respectively and control signal to first late-class circuit and second late-class circuit, to control the output voltage values of first voltage and second voltage respectively; Charging module is connected with control unit; Battery module connects charging module and equipment ground end; And distribution module, connect a battery module and a load; Wherein, distribution module optionally exports the output voltage of high voltage source supply module or the output voltage of battery module in the load to, required electric energy so that loaded work piece to be provided.
Beneficial effect of the present invention is; High voltage source supply module provided by the present invention and the electric power system that is suitable for thereof; It is through being connected the link after the outlet side series connection of first late-class circuit and second late-class circuit with the equipment ground end; In order to the output negative terminal of the output plus terminal that reduces by first late-class circuit or second late-class circuit magnitude of voltage, can reduce requirement whereby for safety with the peace distance of high voltage source supply module to the equipment ground end.In addition, comparatively easy and selectable element is also more relatively for the selection of the inner element of high voltage source supply module, and then reach the purpose that reduces production costs and dwindle high voltage source supply module overall volume.
Description of drawings
Fig. 1: be the structural representation of known power supply unit.
Fig. 2: be the high voltage source supply module structural representation of the present invention's first preferred embodiment.
Fig. 3: be the present invention's first late-class circuit shown in Figure 2 and the internal circuit configuration diagram of second late-class circuit.
Fig. 4: be the present invention's first late-class circuit shown in Figure 2 and another internal circuit configuration diagram of second late-class circuit.
Fig. 5: be the electric power system structural representation of the present invention's second preferred embodiment.
Fig. 6: be the electric power system structural representation of the present invention's the 3rd preferred embodiment.
Wherein, description of reference numerals is following:
1: power supply unit
11: the isolated form transformer
12: input
13: output
131: output plus terminal
132: the output negative terminal
14: the equipment ground end
2: the high voltage source supply module
21: the prime power-switching circuit
22: the first late-class circuits
221: the first output negative terminals
222: the first output plus terminals
223: the first switching circuits
224: the first output rectification circuits
225: the first output filter circuits
23: the second late-class circuits
231: the second output plus terminals
232: the second output negative terminals
233: the second switch circuit
234: the second output rectification circuits
235: the second output filter circuits
24: control unit
241: the prime control circuit
242: microcontroller
243: back level control circuit
3: the first high voltage source supply modules
4: the second high voltage source supply modules
31,41: the prime power-switching circuit
32,42: the first late-class circuits
33,43: the second late-class circuits
34,44: control unit
341,441: the prime control circuit
342,442: microcontroller
343,443: back level control circuit
5: communication interface
6: electric power system
7: electric power system
71: charging module
72: battery module
73: distribution module
731: the first diode circuits
732: the second diode circuits
8: load
C
1: first electric capacity
C
2: second electric capacity
C
Bus: bus capacitance
D
1: first diode
D
2: second diode
D
a～D
b, D
a'～D
b': diode
E, E ': detecting unit
I
1, I
1': first electric current
I
2, I
2': second electric current
I
O1: first output current
I
O2: second output current
I
o: output current
L
1: first inductance
L
2: second inductance
M, M ': link
PG: equipment ground end
PWM
1, PWM
1': first control signal
PWM
2, PWM
2': second control signal
PWM
1a: the first positive half cycle control signal
PWM
1b: the first negative half period control signal
PWM
2a: the second positive half cycle control signal
PWM
2b: the second negative half period control signal
S
1: first switch
S
2: second switch
S
a～S
d, S
a'～S
d': switch
S
Pfc: the prime control signal
Tr
1: first isolating transformer
Tr
2: second isolating transformer
V
1, V
1': first voltage
V
2, V
2': second voltage
V
Bus: bus voltage
V
In: input voltage
V
o, V
o': output voltage
Embodiment
Some exemplary embodiments that embody characteristic of the present invention and advantage will be described in detail in the explanation of back segment.Be understood that the present invention can have various variations on different embodiment, so its neither departing from the scope of the present invention, and explanation wherein and be shown in the usefulness of being used as explanation in essence, but not in order to restriction the present invention.
See also Fig. 2, it is for the high voltage source supply module structural representation of the present invention's first preferred embodiment.As shown in Figure 2, high voltage source supply module 2 of the present invention comprises prime power-switching circuit 21, first late-class circuit 22, second late-class circuit 23, equipment ground end PG and control unit 24 at least.In present embodiment, prime power-switching circuit 21 receives an input power supply V
InAnd convert a bus voltage V to
BusOutput.First late-class circuit 22 receives this bus voltage V
BusAnd export the first voltage V
1, and have the first output negative terminal 221.Second late-class circuit 23 can receive bus voltage V
BusAnd export the second voltage V
2, and having second output plus terminal 231, this second output plus terminal 231 and the first output negative terminal 221 are connected and have a link M.Equipment ground end PG is connected with this link M.As for, control unit 24 is connected with first late-class circuit 22 and second late-class circuit 23, in order to receive the first voltage V
1And the second voltage V
2And according to the first voltage V
1And the second voltage V
2And export the first control signal PWM respectively
1And the second control signal PWM
2To first late-class circuit 22 and second late-class circuit 23, to control the first voltage V respectively
1And the second voltage V
2Output voltage values.In present embodiment, the output voltage V of high voltage source supply module 2
oThe first voltage V by first late-class circuit 22
1The second voltage V with second late-class circuit 23
2Institute is formed by stacking, i.e. V
o=V
1+ V
2
Please consult Fig. 2 again, control unit 24 comprises prime control circuit 241, microcontroller 242 and back level control circuit 243 at least, and microcontroller 242 control prime control circuits 241 are to produce a prime control signal S
Pfc, and then the work of control prime power-switching circuit 21, and microcontroller 242 level control circuit 243 after the may command also are through receiving the first voltage V of first late-class circuit, 22 outlet sides
1And the second voltage V of second late-class circuit, 23 outlet sides
2, and according to the first voltage V that is received
1And the second voltage V
2And produce the first control signal PWM
1And the second control signal PWM
2, make the late-class circuit 22 of winning according to the first control signal PWM
1Work period (duty cycle) control and adjust the first voltage V of follow-up output
1Output voltage values, in like manner second late-class circuit 23 is also according to the second control signal PWM
2Work period control and adjust the second voltage V of follow-up output
2Output voltage values.
In present embodiment, prime power-switching circuit 21 is in order to receive an input power supply V
In, such as but not limited to DC power supply or AC power, AC power can be for example civil power 110V/220V, and through its internal conversion circuit (not indicating among the figure), such as but not limited to DC/DC conversion circuit or AC/DC converting circuit, in order to will import power supply V
InConvert galvanic bus voltage V to
Bus, and via the bus capacitance C that is parallel to prime power-switching circuit 21 outlet sides
BusAfter the filtering, export first late-class circuit 22 and second late-class circuit 23 respectively to.
Moreover; Because the outlet side of first late-class circuit 22 and the outlet side of second late-class circuit 23 constitute series relationship; And has link M between the two; And this link M connection device earth terminal PG; And then each end points in first late-class circuit 22 and second late-class circuit 23 is reduced to the output voltage values of 232 pairs of equipment grounds ends of second output negative terminal PG of first output plus terminal 222 or second late-class circuit 23 of first late-class circuit 22, the i.e. first voltage V respectively to the maximum voltage value of equipment ground end PG
1Or the second voltage V
2That is to say; The inner member of first late-class circuit 22 and second late-class circuit 23, for example electric capacity, inductance, transformer, fuse (Fuse), circuit breaker (Breaker), relay (Relay) and connector elements such as (Connector), its class of insulation is respectively the first voltage V
1Or the second voltage V
2
In addition, because output voltage V
oBy the first voltage V
1And the second voltage V
2Institute is formed by stacking, i.e. V
o=V
1+ V
2, and the first voltage V
1Or the second voltage V
2Magnitude of voltage less than output voltage V
oMagnitude of voltage, therefore from the above, in the identical output voltage V of high voltage source supply module 2 outputs
oSituation under; The class of insulation of the present invention's first late-class circuit 22 and second late-class circuit, 23 inner members is less than the class of insulation of known power supply unit 1 inner member shown in Figure 1, thereby can reduce the demand of voltage peace distance and reach element and select to be easy to purpose.
On the other hand, because the first voltage V
1And the second voltage V
2Output voltage values by the first voltage V of control unit 24 according to first late-class circuit 22
1And the second voltage V of second late-class circuit 23
2-control respectively and get, can overcome whereby when using single centre cap formula transformer (not shown), its output is controlled by same input, so cause can't each self-adjusting first voltage V
1And the second voltage V
2The defective of magnitude of voltage.
See also Fig. 3 and cooperate Fig. 2, wherein Fig. 3 is the present invention's first late-class circuit shown in Figure 2 and the internal circuit configuration diagram of second late-class circuit.Like Fig. 2 and shown in Figure 3, in present embodiment, first late-class circuit 22 comprises first switching circuit 223, the first isolating transformer Tr
1, first output rectification circuit 224 and first output filter circuit 225; Second late-class circuit 23 comprises second switch circuit 233, the second isolating transformer Tr
2, second output rectification circuit 234 and second output filter circuit 235.In present embodiment, first switching circuit 223 and second switch circuit 233 are respectively by for example first switch S
1And second switch S
2Form, but not as limit; First output rectification circuit 224 and second output rectification circuit 234 are respectively by the for example first diode D
1And the second diode D
2Form, but not as limit; And first output filter circuit 225 and second output filter circuit 235 are respectively by for example first inductance L
1First capacitor C of connecting
1And second inductance L
2Second capacitor C of connecting
2Form, but not as limit.
Please consult Fig. 2 and Fig. 3 again, as the first control signal PWM
1Control first switch S of first switching circuit 223
1During conducting, bus voltage V
BusWill be via the first isolating transformer Tr
1The conversion back is by the first isolating transformer Tr
1Secondary side export one first alternating voltage, then, this first alternating voltage is again via the first diode D of first output rectification circuit 224
1Do the direct current rectification, and the output first voltage V after 225 filtering of first output filter circuit
1In like manner, as the second control signal PWM
2The second switch S of control second switch circuit 233
2During conducting, bus voltage V
BusWill be via the second isolating transformer Tr
2The conversion back is by the second isolating transformer Tr
2Secondary side export one second alternating voltage, then, this second alternating voltage is again via the second diode D of second output rectification circuit 234
2Do the direct current rectification, and the output second voltage V after 235 filtering of second output filter circuit
2
See also Fig. 4 and cooperate Fig. 2, wherein Fig. 4 is the present invention's first late-class circuit shown in Figure 2 and another internal circuit configuration diagram of second late-class circuit.Like Fig. 2 and shown in Figure 4, first late-class circuit 22 comprises first switching circuit 223, the first isolating transformer Tr
1, first output rectification circuit 224 and first output filter circuit 225; Second late-class circuit 23 comprises second switch circuit 233, the second isolating transformer Tr
2, second output rectification circuit 234 and second output filter circuit 235, and its annexation and working method are similar with Fig. 3, repeat no more in this.
Only, in present embodiment, first switching circuit 223 and second switch circuit 233 are respectively by for example a plurality of switch S
a～S
dAnd a plurality of switch S
a～S
d' the full-bridge type switching circuit formed, but not as limit, and by the first control signal PWM of back level control circuit 243 outputs of control unit 24
1The first positive half cycle control signal PWM
1aExport switch S respectively to
a, S
c, with control switch S
a, S
cConducting with end and the first control signal PWM
1The first negative half period control signal PWM
1bExport switch S respectively to
b, S
d, with control switch S
b, S
dConducting with end.In like manner, the second control signal PWM that exports by back level control circuit 243
2The second positive half cycle control signal PWM
2aExport switch S respectively to
a', S
c', with control switch S
a', S
c' conducting with end and the second control signal PWM
2The second negative half period control signal PWM
2bExport switch S respectively to
b', S
d', with control switch S
b', S
d' conducting with end.
In addition, in present embodiment, first output rectification circuit 224 and second output rectification circuit 234 are respectively by a plurality of diode D
a～D
bAnd a plurality of diode D
a'～D
b' the synchronous rectification circuit formed, but not as limit.The first isolating transformer Tr
1And the second isolating transformer Tr
2Be centre cap formula transformer, and the link M after the two group switching centre taps series connection be connected with equipment ground end PG that in order to reducing the class of insulation of first late-class circuit 22 and second late-class circuit, 23 inner members, and then the demand of distance is pacified in reduction to voltage.
On the other hand, in present embodiment, the first positive half cycle control signal PWM
1aAnd the first negative half period control signal PWM
1bWork period by the first voltage V of first late-class circuit, 22 outlet sides
1The size that feeds back to the back level control circuit 243 of control unit 24 determines, and the second positive half cycle control signal PWM
2aAnd the second negative half period control signal PWM
2bWork period by the second voltage V of second late-class circuit, 23 outlet sides
2The size that feeds back to this back level control circuit 243 determines.Therefore, the circuit framework that uses full-bridge type switching circuit, centre cap formula transformer and circuit of synchronous rectification to be made up can work in positive-negative half-cycle, improves the operating efficiency of power supply module 2 whereby and avoids working as the first isolating transformer Tr
1Or the second isolating transformer Tr
2The danger that causes the user to get an electric shock when breaking down, and on parallel connection is used, can reach the purpose of the control and the equally loaded of positive negative output balance.
See also Fig. 5 and cooperate Fig. 3, wherein Fig. 5 is the electric power system structural representation of the present invention's second preferred embodiment.Like Fig. 3 and shown in Figure 5, wherein electric power system 6 comprises the first high voltage source supply module 3, the second high voltage source supply module 4 and communication interface 5.In present embodiment; The first high voltage source supply module 3 and the second high voltage source supply module 4 comprise prime power-switching circuit 31 and 41, first late- class circuit 32 and 42, second late-class circuit 33 and 43, equipment ground end PG and control unit 34 and 44 respectively at least; This control unit 34 and 44 has prime control circuit 341 and 441, microcontroller 342 and 442 and back level control circuit 343 and 443 respectively; And its annexation and working method are similar with Fig. 2 respectively, repeat no more in this.
Only, the first high voltage source supply module 3 is connected with parallel way with the outlet side of the second high voltage source supply module 4, and first late- class circuit 32,42 and second late-class circuit 33,43 are exported the first voltage V respectively
1, V
1', the second voltage V
2, V
2', first electric current I
1, I
1' and second electric current I
2, I
2', wherein, the first voltage V
1, V
1' and the second voltage V
2, V
2' feed back to the back level control circuit 343,443 of control unit 34,44 respectively, with framework in producing the first control signal PWM
1, PWM
1' and the second control signal PWM
2, PWM
2' to first late- class circuit 32,42 and second late-class circuit 33,43.
In addition, first electric current I
1, I
1' and second electric current I
2, I
2' feed back to the microcontroller 342,442 of control unit 34,44 respectively; So that the microcontroller 342 of the first high voltage source supply module 3 is according to detecting unit E; Such as but not limited to current transformer (Current Transformer; CT), Hall element or detect element such as resistance, detect first electric current I respectively
1And second electric current I
2Size, judge the first output current I of the first high voltage source supply module 3 whereby
O1, that is, first electric current I
1And second electric current I
2The size of summation, i.e. I
O1=I
1+ I
2In like manner, the microcontroller 442 of the second high voltage source supply module 4 detects first electric current I respectively according to detecting unit E '
1' and second electric current I
2' size, judge the second output current I of the second high voltage source supply module 4 whereby
O2, that is, first electric current I
1' and second electric current I
2' the size of summation, i.e. I
O2=I
1'+I
2', and the first output current I
O1With the second output current I
O2Summation be the first high voltage source supply module 3 and total output current I after the second high voltage source supply module, 4 outlet sides are parallelly connected
o, i.e. I
o=I
O1+ I
O2
Moreover; Communicate through communication interface 5 between the microcontroller 342 of the first high voltage source supply module 3 and the microcontroller 442 of the second high voltage source supply module 4; To obtain the other side's output current respectively through communication interface 5, promptly obtain the second output current I of the second high voltage source supply module, 4 outlet sides respectively
O2The first output current I with the first high voltage source supply module, 3 outlet sides
O1Information, and according to the second output current I that obtained
O2And the first output current I
O1Current value adjust first late-class circuit 32 of the first high voltage source supply module 3, first electric current I of second late-class circuit 33
1And second electric current I
2, and first late-class circuit 42 of the second high voltage source supply module 4, first electric current I of second late-class circuit 43
1' and second electric current I
2' size; Can make the first high voltage source supply module 3 and the second high voltage source supply module 4 reach the purpose of balance output current whereby, and overcome when using single centre cap formula transformer the easy drift of its positive negative output voltage; Uppity problem; In addition, the output that also can solve single centre cap formula transformer is controlled by same input, and causing can't each self-adjusting first voltage V
1And the second voltage V
2Magnitude of voltage and the disappearance that causes parallel connection to be difficult for.
For example, when first electric current I of the first high voltage source supply module 3
1First electric current I greater than the second high voltage source supply module 4
1', i.e. I
1＞I
1', and second electric current I of the first high voltage source supply module 3
2Second electric current I less than the second high voltage source supply module 4
2', i.e. I
2＜I
2' time, the microcontroller 342 of the first high voltage source supply module 3 will be according to the second output current I of the second high voltage source supply module 4
O2Information, controlling back level control circuit 343 increases its first control signal PWM that export
1Work period, increase by the second control signal PWM simultaneously
2Work period, and the microcontroller 442 of the second high voltage source supply module 4 will be according to the first output current I of the first high voltage source supply module 3
O1Information, increase by the first control signal PWM of level control circuit 443 output thereafter
1' work period, reduce by the second control signal PWM simultaneously
2' work period, further to make first electric current I of the first high voltage source supply module 3
1Equal first electric current I of the second high voltage source supply module 4 in fact
1', i.e. I
1≈ I
1', and second electric current I of the first high voltage source supply module 3
2Equal second electric current I of the second high voltage source supply module 4 in fact
2', i.e. I
2≈ I
2', so promptly can reach when 3,4 parallel connections of two groups of high voltage source supply modules are used, the electric current that both exported can reach the effect of current-sharing.
See also Fig. 6 and cooperate Fig. 3, wherein Fig. 6 is the electric power system structural representation of the present invention's the 3rd preferred embodiment.Like Fig. 3 and shown in Figure 6, the electric power system 7 of present embodiment can be a for example non-interrupted power supply system, comprises high voltage source supply module 2, charging module 71, battery module 72 and distribution module 73 at least.In present embodiment; High voltage source supply module 2 comprises prime power-switching circuit 21, first late-class circuit 22, second late-class circuit 23, equipment ground end PG and control unit 24 at least; This control unit 24 has prime control circuit 241, microcontroller 242 and back level control circuit 243; And its annexation and working method are similar with Fig. 2, repeat no more in this.
Only, in present embodiment, the outlet side of high voltage source supply module 2 connects charging module 71 and distribution module 73 respectively, in order to output voltage V
oBe sent to charging module 71 and distribution module 73.Charging module 71 is connected with the microcontroller 242 and the battery module 72 of high voltage source supply module 2, and battery module 72 is connected with distribution module 73 and equipment ground end PG.Moreover; Distribution module 73 can be made up of for example first diode circuit 731 and 732 of second diode circuits; But not as limit; And first diode circuit 631 is connected between a battery module 72 and the load 8, and second diode circuit 732 is connected between high voltage source supply module 2 and the load 8, and distribution module 73 is in order to optionally with the output voltage V of high voltage source supply module 2
oOr the output voltage V of battery module 72
o' export in the load 8 required electric energy so that load 8 work to be provided to.
For example, as input power supply V
InDuring normal power supply, distribution module 73 is optionally with the output voltage V of high voltage source supply module 2
oExport in the load 8, that is to say, required electric energy is provided by high voltage source supply module 2 during load 8 work, and meanwhile, microcontroller 242 transmits the output voltage V of control signal control charging module 71 with high voltage source supply module 2
o Battery module 72 is charged.On the contrary, as input power supply V
InDuring unusual the power supply, distribution module 73 changes by the output voltage V with battery module 72
o' export in the load 8, that is to say that required electric energy changes by battery module 72 during load 8 work provides, and reaches the purpose that electric power system 7 does not interrupt load 8 is provided electric energy whereby.
In sum; The electric power system that the present invention provides a kind of high voltage source supply module and is suitable for; It is through being connected the link after the outlet side series connection of first late-class circuit and second late-class circuit with the equipment ground end; In order to the output negative terminal of the output plus terminal that reduces by first late-class circuit or second late-class circuit magnitude of voltage, can reduce requirement whereby for safety with the peace distance of high voltage source supply module to the equipment ground end.In addition, comparatively easy and selectable element is also more relatively for the selection of the inside element of high voltage source supply module, and then reach the purpose that reduces production costs and dwindle high voltage source supply module overall volume.
Moreover the present invention provides a kind of electric power system, with the parallel connection of the outlet side of two groups of high voltage source supply modules, and through a communication interface to obtain the other side's output current, can reach the purpose of the output current of balance high voltage source supply module.
In addition; The present invention provides a kind of electric power system in addition; Optionally the output voltage of high voltage source supply module or the output voltage of battery module are exported in the load through distribution module; Required electric energy so that loaded work piece to be provided, and then reach the purpose that electric power system does not interrupt load is provided electric energy.
Though the present invention discloses as above with aforesaid preferred embodiments, yet it is not in order to limit the present invention.Those skilled in the art should recognize that change of being done and retouching all belong within the protection range of claim of the present invention under the situation that does not break away from appended scope of the present invention that claim disclosed of the present invention and spirit.
Claims (10)
1. a high voltage source supply module is applicable to an electric power system, comprises at least:
One prime power-switching circuit receives an input power supply and converts bus voltage output to;
One first late-class circuit receives this bus voltage and exports one first voltage, and has one first output negative terminal;
One second late-class circuit receives this bus voltage and exports one second voltage, and has one second output plus terminal, and this second output plus terminal is connected with this first output negative terminal and has a link;
One equipment ground end is connected with this link; And
One control unit; Be connected with this first late-class circuit and this second late-class circuit; With according to this first voltage and this second voltage and export one first control signal and one second respectively and control signal to this first late-class circuit and this second late-class circuit, to control the output voltage values of this first voltage and this second voltage respectively.
2. high voltage source supply module as claimed in claim 1 is characterized in that, this high voltage source supply module is exported an output voltage, and this output voltage is the summation of this second voltage of this first voltage and this second late-class circuit of this first late-class circuit.
3. high voltage source supply module as claimed in claim 1 is characterized in that, this control unit comprises at least:
One prime control circuit connects this prime power-switching circuit;
One microcontroller connects this prime control circuit, produces a prime and controls signal to this prime power-switching circuit to control this prime control circuit; And
One back grade control circuit connects this microcontroller;
Wherein, this microprocessor controls should produce this first control signal and this second control signal by back level control circuit, and was sent to this first late-class circuit and this second late-class circuit respectively.
4. high voltage source supply module as claimed in claim 3 is characterized in that, the work period of this first control signal and this second control signal is determined by the size of this back level this first voltage that control circuit received and this second voltage respectively.
5. high voltage source supply module as claimed in claim 1 is characterized in that, the outlet side of the outlet side of this first late-class circuit and this second late-class circuit connects with series system.
6. high voltage source supply module as claimed in claim 1; It is characterized in that; This first late-class circuit comprises one first switching circuit, one first isolating transformer, one first output rectification circuit and one first output filter circuit, and this second late-class circuit comprises a second switch circuit, one second isolating transformer, one second output rectification circuit and one second output filter circuit.
7. high voltage source supply module as claimed in claim 6; It is characterized in that; This first switching circuit and this second switch circuit are made up of one first switch and a second switch respectively; This first output rectification circuit and this second output rectification circuit are made up of one first diode and one second diode respectively, and this first output filter circuit and this second output filter circuit are made up of one first inductance, one first electric capacity and one second inductance one second electric capacity of connecting of connecting respectively.
8. high voltage source supply module as claimed in claim 6; It is characterized in that; This first switching circuit and this second switch circuit are formed a full-bridge type switching circuit by a plurality of switches respectively; This first output rectification circuit and this second output rectification circuit are formed a synchronous rectification circuit by a plurality of diodes respectively, and this first isolating transformer and this second isolating transformer are centre cap formula transformer.
9. electric power system comprises at least:
A plurality of high voltage source supply modules, and each this high voltage source supply module comprises at least:
One prime power-switching circuit receives an input power supply and converts bus voltage output to;
One first late-class circuit receives this bus voltage and exports one first voltage and one first electric current, and has one first output negative terminal;
One second late-class circuit receives this bus voltage and exports one second voltage and one second electric current, and has one second output plus terminal, and this second output plus terminal is connected with this first output negative terminal and has a link;
One equipment ground end is connected with this link; And
One control unit; Be connected with this first late-class circuit and this second late-class circuit; With according to this first voltage and this second voltage and export one first control signal and one second respectively and control signal to this first late-class circuit and this second late-class circuit, to control the output voltage values of this first voltage and this second voltage respectively; And
One communication interface connects each this control unit respectively;
Wherein, the outlet side of each this high voltage source supply module is connected in parallel, and links up through this communication interface between this control unit of being comprised of a plurality of high voltage source supply module, to adjust this corresponding first electric current and the output current value of this second electric current.
10. electric power system comprises at least:
One high voltage source supply module comprises at least:
One prime power-switching circuit receives an input power supply and converts bus voltage output to;
One first late-class circuit receives this bus voltage and exports one first voltage, and has one first output negative terminal;
One second late-class circuit receives this bus voltage and exports one second voltage, and has one second output plus terminal, and this second output plus terminal is connected with this first output negative terminal and has a link;
One equipment ground end is connected with this link; And
One control unit; Be connected with this first late-class circuit and this second late-class circuit; With according to this first voltage and this second voltage and export one first control signal and one second respectively and control signal to this first late-class circuit and this second late-class circuit, to control the output voltage values of this first voltage and this second voltage respectively;
One charging module is connected with this control unit;
One battery module connects this charging module and this equipment ground end; And
One distribution module connects this battery module and a load;
Wherein, this distribution module optionally exports the output voltage of this high voltage source supply module or the output voltage of this battery module in this load to, required electric energy so that this loaded work piece to be provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010537460XA CN102468758A (en) | 2010-11-05 | 2010-11-05 | High-voltage power supply module and its applicable power supply system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010537460XA CN102468758A (en) | 2010-11-05 | 2010-11-05 | High-voltage power supply module and its applicable power supply system |
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| CN102468758A true CN102468758A (en) | 2012-05-23 |
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| CN201010537460XA Pending CN102468758A (en) | 2010-11-05 | 2010-11-05 | High-voltage power supply module and its applicable power supply system |
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Application publication date: 20120523 |