CN102347498A - Pressurizer for fuel cell and method thereof - Google Patents
Pressurizer for fuel cell and method thereof Download PDFInfo
- Publication number
- CN102347498A CN102347498A CN2010102423888A CN201010242388A CN102347498A CN 102347498 A CN102347498 A CN 102347498A CN 2010102423888 A CN2010102423888 A CN 2010102423888A CN 201010242388 A CN201010242388 A CN 201010242388A CN 102347498 A CN102347498 A CN 102347498A
- Authority
- CN
- China
- Prior art keywords
- voltage
- transducer
- fuel cell
- output
- load
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention relates to a pressurizer for a fuel cell and a method thereof. Input terminus of multiple converters are electrically connected to the fuel cell in parallel connection; and output terminus of the converters in series connection are electrically connected between a positive endpoint and a negative endpoint of a load. Output of the fuel cell is conversed by the converter and merged to output an output voltage as a working voltage of the load. A feedback signal corresponding to the output voltage is received by a control circuit, so as to carry out feedback control on each converter; therefore, each converter outputs a same constant voltage.
Description
Technical field
The present invention relates to a kind of electric power supply system of fuel cell, particularly relate to a kind of stable-pressure device and method thereof that is used for fuel cell.
Background technology
Fuel cell (Full Cell) is to utilize electrochemical reaction chemical energy to be changed into a kind of cell apparatus of electric energy output.The operation principle of fuel cell is to utilize to contain the fuel of hydrogen and anode and the negative electrode that oxidant (air or oxygen) is transported to fuel cell respectively; Wherein anode is that fuel decomposition is become hydrogen ion and electronics; Hydrogen ion from anode through PEM to negative electrode, and react with the electronics that conducts to negative electrode through external circuit and to be combined into water.Therefore, need only continuously fuel supplying, fuel cell just can constantly generate electricity.
Compared to traditional generation mode, fuel cell has low pollution, low noise, high-energy-density and higher advantages such as energy conversion efficiency, is to have the following prospective energy.And the range of application of fuel cell is very extensive at present, for example: each field such as electric power, industry, transportation, space, military affairs.
Because the transmission that the power supply process of fuel cell relates to fuel concentration, reaction temperature, fuel is mobile with electron stream, thus the output voltage electric current of fuel cell to receive the influence of load very big.With after load is connected, its terminal voltage produces tangible change easily along with the variation of load current at fuel cell, and the ratio Yue Keda 50% of change.Wherein, when load current was big more, the variable quantity of fuel cell also will be big more.
Therefore, the voltage that generally can't directly use fuel cell to export, but the voltage that can utilize power electronic technology steady fuel battery to be exported earlier are again using through stable voltage output afterwards.In other words, because the output voltage of fuel cell receives the influence of load change and fuel cell polarization loss easily, and cause VD unstable.Therefore, transducer capable of using (Converter) is converted to application end with the output voltage stabilization of fuel cell.
The specification of the power output of common fuel cell can be 1kW (kilowatt)-10kW.Yet; The transducer of high-power output specification has following point technically: the part of high power conversion device is difficult for obtaining and manufacturing cost is higher, the low-voltage, high-current of fuel cell can make that transducer is difficult for making, and big electric current can produce problems such as electromagnetic interference.
This shows that above-mentioned existing transducer obviously still has inconvenience and defective, and demands urgently further improving in structure and use.In order to solve the problem of above-mentioned existence; Relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly; But do not see always that for a long time suitable design is developed completion, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of stable-pressure device that is used for fuel cell of new structure, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
Main purpose of the present invention is; Overcome the defective that existing transducer exists; And a kind of stable-pressure device that is used for fuel cell and method thereof of new structure, technical problem to be solved are provided is the input parallel connection that makes its a plurality of transducers, bears high-power input to avoid single transducer; Problem so as to difficulty and large-current electric magnetic disturbance on the expensive and technology that solves the high power conversion device is very suitable for practicality.
Another object of the present invention is to; A kind of stable-pressure device that is used for fuel cell and method thereof of new structure are provided; Technical problem to be solved is to make its output series connection with a plurality of transducers; To reduce the voltage ratio of single transducer, amplify problems such as surging and the non-linear concussion of secondary side so as to avoiding, thereby be suitable for practicality more.
A purpose more of the present invention is; A kind of stable-pressure device that is used for fuel cell and method thereof of new structure are provided, and technical problem to be solved is to make its control of passing through cell controller, so that the power output of each transducer is identical; So as to avoiding after the output of a plurality of transducers merges; Wherein there is transducer the excessive phenomenon of power output to occur and causes the problem of damage, thereby be suitable for practicality more, and have the value on the industry.
The object of the invention and solve its technical problem and adopt following technical scheme to realize.A kind of stable-pressure device that is used for fuel cell according to the present invention's proposition; Comprise: a plurality of transducers; Each this transducer has an input and an output; And the said input of said transducer is electrically connected to this fuel cell with parallelly connected electric connecting relation, and the said output of said transducer is to be connected between the positive end points and a negative terminal of a load with the series connection electric connecting relation again; And a control circuit, in order to according to controlling said transducer, so that each this transducer is exported the voltage of deciding of identical size corresponding to the operating voltage of this load.
The object of the invention and solve its technical problem and also can adopt following technical measures further to realize.
The aforesaid stable-pressure device that is used for fuel cell; Wherein said control circuit comprises: a plurality of cell controllers; The corresponding said transducer of difference, each this cell controller should be decided voltage in order to what export according to this corresponding transducer of operating voltage control of this load.
The aforesaid stable-pressure device that is used for fuel cell; Wherein said each cell controller comprises: a computing unit; In order to calculate an average voltage according to the operating voltage of this load and the sum of said transducer, wherein this average voltage is to get it by the operational voltage value with this load divided by the sum of said transducer; One comparing unit decided voltage in order to this that this average voltage and this corresponding transducer are exported and compare; And a regulon, in order to responsibility cycle according to this corresponding transducer of the comparative result selectivity adjustment of this comparing unit.
The aforesaid stable-pressure device that is used for fuel cell; Wherein said control circuit comprises: a computing unit; In order to calculate an average voltage according to the operating voltage of this load and the sum of said transducer, wherein this average voltage is to get it by the operational voltage value with this load divided by the sum of said transducer; And a plurality of cell controllers, the corresponding said transducer of difference, each this cell controller should be decided voltage in order to what export according to this corresponding transducer of this average voltage control.
The aforesaid stable-pressure device that is used for fuel cell, wherein said each cell controller comprises: a comparing unit, decide voltage in order to this that this average voltage and this corresponding transducer are exported and compare; And a regulon, in order to responsibility cycle according to this corresponding transducer of the comparative result selectivity adjustment of this comparing unit.
The object of the invention and solve its technical problem and also adopt following technical scheme to realize.According to a kind of method for stabilizing voltage that is used for fuel cell that the present invention proposes, it comprises the following steps: to utilize a plurality of transducers that the output conversion of this fuel cell is output as to decide voltage; Merge that said transducer exports said to decide voltage be an output voltage; And carrying out a back coupling controlled step, it is to feedback control said transducer according to this output voltage, so that each this transducer is exported the voltage of deciding of identical size.
The object of the invention and solve its technical problem and also can adopt following technical measures further to realize.
The aforesaid method for stabilizing voltage that is used for fuel cell; Wherein said back coupling controlled step is to comprise the following steps: to calculate an average voltage according to the sum of this output voltage and said transducer, and wherein this average voltage is by this output voltage is got it divided by the sum of said transducer; With each this transducer export should decide voltage and this average voltage compares; And carrying out a selectivity set-up procedure, it is the respectively responsibility cycle of this transducer of the pairing comparative result selectivity adjustment of this transducer correspondence of basis.
The aforesaid method for stabilizing voltage that is used for fuel cell; Wherein said selectivity set-up procedure comprises: when this decides voltage less than this average voltage; Increase this responsibility cycle of this corresponding transducer so that this transducer export should decide voltage and be increased to this average voltage; When this decides voltage greater than this average voltage, reduce this responsibility cycle of this corresponding transducer so that this transducer export should decide voltage and reduced to this average voltage; And when voltage should decide equaling this average voltage, then do not change this responsibility cycle of this transducer of correspondence.
The aforesaid method for stabilizing voltage that is used for fuel cell, wherein said selectivity set-up procedure are this responsibility cycle that increases or reduce this transducer by pulsewidth width modulation (PWM) controlling mechanism.
The aforesaid method for stabilizing voltage that is used for fuel cell, wherein said output voltage is in order to the operating voltage as a load.
The present invention compared with prior art has tangible advantage and beneficial effect.Know by above; For achieving the above object; The invention provides a kind of stable-pressure device that is used for fuel cell, comprising: a plurality of transducers, each transducer have an input and an output; And the said input of said transducer is electrically connected to fuel cell with parallelly connected electric connecting relation, and the said output of said transducer is to be connected between the positive end points and a negative terminal of a load with the series connection electric connecting relation again; And a control circuit, in order to according to controlling said transducer, so that each transducer is exported the voltage of deciding of identical size corresponding to the operating voltage of load.
For reaching above-mentioned effect, the present invention provides a kind of method for stabilizing voltage that is used for fuel cell again, and it comprises the following steps: to utilize a plurality of transducers that the output conversion of fuel cell is output as to decide voltage; Merge that said transducer exports said to decide voltage be an output voltage; Carry out a back coupling controlled step, it is to feedback control said transducer according to output voltage, so that each transducer is exported the voltage of deciding of identical size.
By technique scheme, the present invention has advantage and beneficial effect at least:
One, utilize the set-up mode of the input parallel connection of a plurality of transducers to come mean allocation fuel cell overall power output; To avoid single transducer to bear high-power input; Thereby can adopt the transducer of smaller power, so as to the problem of difficulty and large-current electric magnetic disturbance on the expensive and technology that solves the high power conversion device.
Two, utilize the set-up mode of the output series connection of a plurality of transducers to improve whole output voltage, reducing the voltage ratio of single conversion module, and then avoid amplifying problems such as surging and the non-linear concussion of secondary side.
Three, through the control of internal control unit, cause the power output of each transducer identical,, the output of a plurality of transducers wherein have transducer the excessive phenomenon of power output to occur and damage in advance so as to avoiding after merging.
In sum, the present invention is stable-pressure device and the method thereof that is used for fuel cell for a kind of.In this, the input of a plurality of transducers is to be electrically connected to fuel cell with parallelly connected electric connecting relation, and the output of said transducer then is connected between the positive end points and negative terminal of load with the series connection electric connecting relation.By transducer the operating voltage of an output voltage as this load exported in the output conversion and the merging of fuel cell.Wherein, utilize control circuit to receive feedback signal, carry out the back coupling control of each transducer according to this, so that each transducer is exported the voltage of deciding of identical size corresponding to output voltage.The present invention has obvious improvement technically, and has tangible good effect, really is the new design of a novelty, progress, practicality.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention; Understand technological means of the present invention in order can more to know; And can implement according to the content of specification, and for let of the present invention above-mentioned with other purposes, feature and advantage can be more obviously understandable, below special act preferred embodiment; And conjunction with figs., specify as follows.
Description of drawings
Fig. 1 is a kind of summary block diagram that is used for the stable-pressure device of fuel cell of the present invention.
Fig. 2 is a kind of flow chart that is used for the method for stabilizing voltage of fuel cell of the present invention.
Fig. 3 is the summary block diagram of the control circuit of first embodiment of the invention.
Fig. 4 is the summary block diagram of the cell controller of first embodiment of the invention.
Fig. 5 is the detail flowchart of the back coupling controlled step of one embodiment of the invention.
Fig. 6 is the detail flowchart of the step 453 and the step 455 of one embodiment of the invention.
Fig. 7 is the summary block diagram of the control circuit of second embodiment of the invention.
Fig. 8 is the summary block diagram of the cell controller of second embodiment of the invention.
10: fuel cell 20: the stable-pressure device that is used for fuel cell
21-1,21-2 ... 21-n: transducer 21-i: transducer
23: control circuit 230-1,230-2 ... 230-n: cell controller
230-i: cell controller 231: computing unit
233: comparing unit 235: regulon
30: supported V out: output voltage
FB: feedback signal Va: average voltage
Vi: decide voltage R: comparative result
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention; Below in conjunction with accompanying drawing and preferred embodiment; To a kind of stable-pressure device and the method thereof that is used for fuel cell that proposes according to the present invention; Its embodiment, structure, characteristic and effect thereof, specify as after.
Fig. 1 is a kind of summary block diagram that is used for the stable-pressure device 20 of fuel cell of the present invention.Fig. 2 is a kind of flow chart that is used for the method for stabilizing voltage of fuel cell of the present invention.Fig. 3 is the summary block diagram of the control circuit 23 of first embodiment of the invention.
Please refer to Fig. 1 and Fig. 2, present embodiment is a kind of stable-pressure device 20 that is used for fuel cell, and it is connected between a fuel cell 10 and the load 30, to give load 30 with the stable conversion of the output of fuel cell 10.
This stable-pressure device 20 that is used for fuel cell comprises a plurality of transducer 21-1,21-2 ... A 21-n (following) and a control circuit 23 with 21 each transducer of general designation.
Each transducer 21 has an input and an output.Said transducer 21-1,21-2 ... The input of 21-n is to be electrically connected to fuel cell 10 with parallelly connected electric connecting relation, with the output of average received fuel cell 10.In other words, but the whole power output mean allocation of fuel cell 10 is given each transducer 21.Thus, can avoid single transducer to bear high-power input, thereby can adopt the transducer of smaller power, so as to the problem of difficulty and large-current electric magnetic disturbance on the expensive and technology that solves the high power conversion device.
Said transducer 21-1,21-2 ... 21-n is output as the output of fuel cell 10 conversion respectively and decides voltage (V1, V2-Vn) (step 410).
Said transducer 21-1,21-2 ... The output of 21-n is connected between the positive end points and a negative terminal of load 30 with the series connection electric connecting relation; With with said transducer 21-1,21-2 ... The voltage (V1, V2-Vn) of deciding that 21-n exported is merged into an output electric Vout (step 430), and output voltage V out is the operating voltage as this load 30.
Thus, the power output of each transducer 21 is identical, can avoid at a plurality of transducer 21-1,21-2 ... After the output of 21-n merges, wherein there is arbitrary transducer 21 the excessive phenomenon of power output to occur and damage in advance.
In this, each transducer 21 can be a direct current to direct current transducer (DC/DC Converter).
Please refer to Fig. 3, control circuit 23 can have a plurality of cell controller 230-1,230-2 ... 230-n (following) with 230 each cell controller of general designation.
Said cell controller 230-1,230-2 ... 230-n is corresponding conversion device 21-1,21-2 respectively ... 21-n, and cell controller 230-1,230-2 ... 230-n is electrically connected to transducer 21-1,21-2 one to one ... 21-n.In addition, each cell controller 230 can constitute a conversion module (figure does not show) with corresponding transducer 21, that is to say that each conversion module all comprises a cell controller 230 and a transducer 21, to simplify the integrated circuit structure.
Each cell controller 230 is in order to receiving feedback signal FB, and carries out the back coupling control of corresponding transducer 21 according to output voltage V out (operating voltage of load 30) so that the identical size of each transducer 21 output decide voltage.
Fig. 4 is the summary block diagram for the cell controller 230-i of first embodiment of the invention.Fig. 5 is the detail flowchart of the back coupling controlled step (step 450) of one embodiment of the invention.Because the structure of each cell controller 230 is identical haply, therefore in order to clearly demonstrate, the summary structure of only drawing out single cell controller 230-i in the drawings is as signal, and wherein i is to be 1 to n any positive integer wherein.
Please refer to Fig. 1 to Fig. 4, cell controller 230-i can comprise computing unit 231, comparing unit 233 and regulon 235.Wherein, computing unit 231 is electrically connected at load 30, and comparing unit 233 is the output that is electrically connected at computing unit 231 and corresponding transducer 21-i, between the output that regulon 235 then is connected in comparing unit 233 and the corresponding transducer 21-i.
Please arrange in pairs or groups with reference to figure 5; Computing unit 231 receives corresponding to output voltage V out (promptly; The operating voltage of load 30) feedback signal FB; And according to output voltage V out (that is the operating voltage of load 30) and transducer 21-1,21-2 ... The sum of 21-n (n) calculates an average voltage Va (step 451).Wherein, average voltage Va be by with output voltage V out divided by transducer 21-1,21-2 ... The sum of 21-n (n) and it.
The comparing unit 233 of each cell controller 230-i can compare (step 453) with the voltage Vi that decides that average voltage Va and each self-corresponding transducer 21-i are exported, and comparative result R is exported to regulon 235 separately.
The regulon 235 of each cell controller 230-i can carry out a selectivity set-up procedure, to adjust the responsibility cycle (step 455) of pairing transducer 21-i according to each transducer 21 pairing comparative result R selectivity.
Fig. 6 is the detail flowchart of the step 453 and the step 455 of one embodiment of the invention.Please further with reference to figure 6; When the transducer 21-i of correspondence exported decide voltage Vi greater than average voltage Va (step 4531) time; Regulon 235 can reduce the responsibility cycle (step 4551) of corresponding transducer 21-i, so that the voltage Vi that decides that corresponding transducer 21-i is exported reduces to average voltage Va.
When the transducer 21-i of correspondence exported decide voltage Vi less than average voltage Va (step 4533) time; Regulon 235 can increase the responsibility cycle (step 4553) of corresponding transducer 21-i, so that the voltage Vi that decides that transducer 21-i is exported is increased to average voltage Va.
When the transducer 21-i of correspondence exported decide voltage Vi and equal average voltage Va the time, regulon 235 does not change the responsibility cycle (step 4555) of corresponding transducer 21-i.
Wherein, Carry out the adjustment of responsibility cycle of corresponding transducer 21-i at the regulon 235 of any cell controller 230-i after; Output voltage V out can change thereupon; Therefore computing unit 231 can recomputate average voltage Va (step 451), and continues and carry out follow-up comparison, until all transducer 21-1,21-2 ... What 21-n exported identical size decides voltage (V1, V2-Vn).
Wherein, the regulon 235 selectivity set-up procedure of being carried out can increase or reduce the responsibility cycle of corresponding transducer 21-i by pulsewidth width modulation (PWM) controlling mechanism.
In addition; Though be to draw out judgement earlier whether to decide voltage Vi in Fig. 6 greater than average voltage Va (step 4531); The result judges for not the time again and whether decides voltage Vi less than average voltage Va (step 4533); Yet this execution sequence is not restriction of the present invention, also can be to judge earlier and whether decide voltage Vi less than average voltage Va (step 4533), and the result judges when denying again and whether decides voltage Vi greater than average voltage Va (step 4531); Or; Carry out simultaneously deciding voltage Vi whether greater than average voltage Va with decide voltage Vi whether less than the judgement (step 4531 and step 4533) of average voltage Va; When both results were not, regulon 235 did not just change the responsibility cycle (step 4555) of corresponding transducer 21-i.
Fig. 7 is the summary block diagram of the control circuit 23 of second embodiment of the invention.
Please refer to Fig. 7, in a second embodiment, control circuit 23 can have a plurality of cell controller 230-1,230-2 ... A 230-n and a computing unit 231.
Said cell controller 230-1,230-2 ... 230-n is corresponding conversion device 21-1,21-2 respectively ... 21-n, and cell controller 230-1,230-2 ... 230-n is electrically connected to transducer 21-1,21-2 one to one ... 21-n.Wherein, computing unit 231 is electrically connected at load 30, and the output of computing unit 231 then is electrically connected to each cell controller 230.In addition, each cell controller 230 can constitute a conversion module (figure does not show) with corresponding transducer 21, that is to say that each conversion module all comprises a cell controller 230 and a transducer 21, to simplify the integrated circuit structure.
Please arrange in pairs or groups with reference to figure 5; Computing unit 231 receives corresponding to output voltage V out (promptly; The operating voltage of load 30) feedback signal FB; And according to output voltage V out (that is the operating voltage of load 30) and transducer 21-1,21-2 ... The sum of 21-n (n) calculates an average voltage Va (step 451).Wherein, average voltage Va be by with output voltage V ou t divided by transducer 21-1,21-2 ... The sum of 21-n (n) and it.
230 of each cell controllers carry out the back coupling control (step 453 and step 455) of the transducer 21 of correspondence according to average voltage Va, so that each transducer 21 is exported the voltage of deciding of identical size.
Fig. 8 is the summary block diagram for the cell controller 230-i of second embodiment of the invention.Because the structure of each cell controller 230 is identical haply, therefore in order to clearly demonstrate, the summary structure of in graphic, only drawing out single cell controller 230-i is as signal, and wherein i is to be 1 to n any positive integer wherein.
Please refer to Fig. 1, Fig. 7 and Fig. 8, cell controller 230-i can comprise comparing unit 233 and regulon 235.Wherein, comparing unit 233 is electrically connected at the output of computing unit 231 and corresponding transducer 21-i, between the output that regulon 235 then is connected in comparing unit 233 and the corresponding transducer 21-i.
Please arrange in pairs or groups with reference to figure 5, the comparing unit of each cell controller 230-i 233 can compare (step 453) with the voltage Vi that decides that average voltage Va and each self-corresponding transducer 21-i are exported, and comparative result R is exported to regulon 235 separately again.
The regulon 235 of each cell controller 230-i can carry out a selectivity set-up procedure, in order to adjust the responsibility cycle (step 455) of pairing transducer 21-i according to comparative result R selectivity.
Hence one can see that; The present invention can be through the internal control unit (promptly; Control circuit 23) control; So that the power output of each transducer 21 is identical, so as to avoiding at a plurality of transducer 21-1,21-2 ... After the output of 21-n merges, wherein there is transducer the excessive phenomenon of power output to occur and damage in advance.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferred embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technical scheme scope of the present invention; When the technology contents of above-mentioned announcement capable of using is made a little change or is modified to the equivalent embodiment of equivalent variations; In every case be the content that does not break away from technical scheme of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (10)
1. stable-pressure device that is used for fuel cell is characterized in that comprising:
A plurality of transducers; Each this transducer has an input and an output; And the said input of said transducer is electrically connected to this fuel cell with parallelly connected electric connecting relation, and the said output of said transducer is to be connected between the positive end points and a negative terminal of a load with the series connection electric connecting relation again; And
One control circuit is controlled said transducer in order to basis corresponding to the operating voltage of this load, so that each this transducer is exported the voltage of deciding of identical size.
2. the stable-pressure device that is used for fuel cell according to claim 1; It is characterized in that wherein said control circuit comprises: a plurality of cell controllers; The corresponding said transducer of difference, each this cell controller should be decided voltage in order to what export according to this corresponding transducer of operating voltage control of this load.
3. the stable-pressure device that is used for fuel cell according to claim 2 is characterized in that wherein said each cell controller comprises:
One computing unit, in order to calculate an average voltage according to the operating voltage of this load and the sum of said transducer, wherein this average voltage is to get it by the operational voltage value with this load divided by the sum of said transducer;
One comparing unit decided voltage in order to this that this average voltage and this corresponding transducer are exported and compare; And
One regulon is in order to the responsibility cycle according to this corresponding transducer of the comparative result selectivity adjustment of this comparing unit.
4. the stable-pressure device that is used for fuel cell according to claim 1 is characterized in that wherein said control circuit comprises:
One computing unit, in order to calculate an average voltage according to the operating voltage of this load and the sum of said transducer, wherein this average voltage is to get it by the operational voltage value with this load divided by the sum of said transducer; And
A plurality of cell controllers, the corresponding said transducer of difference, each this cell controller should be decided voltage in order to what export according to this corresponding transducer of this average voltage control.
5. the stable-pressure device that is used for fuel cell according to claim 4 is characterized in that wherein said each cell controller comprises:
One comparing unit decided voltage in order to this that this average voltage and this corresponding transducer are exported and compare; And
One regulon is in order to the responsibility cycle according to this corresponding transducer of the comparative result selectivity adjustment of this comparing unit.
6. a method for stabilizing voltage that is used for fuel cell is characterized in that it comprises the following steps:
Utilize a plurality of transducers that the output of this fuel cell conversion is output as and decide voltage;
Merge that said transducer exports said to decide voltage be an output voltage; And
Carry out a back coupling controlled step, it is to feedback control said transducer according to this output voltage, so that each this transducer is exported the voltage of deciding of identical size.
7. the method for stabilizing voltage that is used for fuel cell according to claim 6 is characterized in that wherein said back coupling controlled step is to comprise the following steps:
Sum according to this output voltage and said transducer calculates an average voltage, and wherein this average voltage is by this output voltage is got it divided by the sum of said transducer;
With each this transducer export should decide voltage and this average voltage compares; And
Carry out a selectivity set-up procedure, it is the respectively responsibility cycle of this transducer of the pairing comparative result selectivity adjustment of this transducer correspondence of basis.
8. the method for stabilizing voltage that is used for fuel cell according to claim 7 is characterized in that wherein said selectivity set-up procedure comprises:
When this decides voltage less than this average voltage, increase this responsibility cycle of this corresponding transducer so that this transducer export should decide voltage and be increased to this average voltage;
When this decides voltage greater than this average voltage, reduce this responsibility cycle of this corresponding transducer so that this transducer export should decide voltage and reduced to this average voltage; And
When this is decided voltage and equals this average voltage, then do not change this responsibility cycle of this corresponding transducer.
9. the method for stabilizing voltage that is used for fuel cell according to claim 7 is characterized in that wherein said selectivity set-up procedure is this responsibility cycle that increases or reduce this transducer by pulsewidth width modulation controlling mechanism.
10. the method for stabilizing voltage that is used for fuel cell according to claim 6 is characterized in that wherein said output voltage is in order to the operating voltage as a load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102423888A CN102347498A (en) | 2010-07-29 | 2010-07-29 | Pressurizer for fuel cell and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102423888A CN102347498A (en) | 2010-07-29 | 2010-07-29 | Pressurizer for fuel cell and method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102347498A true CN102347498A (en) | 2012-02-08 |
Family
ID=45545912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102423888A Pending CN102347498A (en) | 2010-07-29 | 2010-07-29 | Pressurizer for fuel cell and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102347498A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050286277A1 (en) * | 2004-06-25 | 2005-12-29 | The Board Of Trustees Of The University Of Illinois | Dynamic current sharing dc-dc switching power supply |
| JP2010148242A (en) * | 2008-12-18 | 2010-07-01 | Sharp Corp | Power conversion device, method for controlling charge and discharge of power conversion device, program for controlling power conversion device, and recording medium recorded with program for controlling power conversion device |
-
2010
- 2010-07-29 CN CN2010102423888A patent/CN102347498A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050286277A1 (en) * | 2004-06-25 | 2005-12-29 | The Board Of Trustees Of The University Of Illinois | Dynamic current sharing dc-dc switching power supply |
| JP2010148242A (en) * | 2008-12-18 | 2010-07-01 | Sharp Corp | Power conversion device, method for controlling charge and discharge of power conversion device, program for controlling power conversion device, and recording medium recorded with program for controlling power conversion device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210041650U (en) | Non-isolated high-gain three-port converter | |
| KR20120084616A (en) | Charging device for electric vehicle | |
| CN111313527A (en) | Method for controlling power balance of direct current micro-grid system | |
| CN102709976B (en) | Common bus energy-saving recovery type storage battery charging-discharging power supply equipment | |
| KR100661920B1 (en) | Fuel cell possible load countermove working and working method thereof | |
| CN108512423A (en) | A kind of vehicle-mounted DCDC power supplys of high-efficiency high-power | |
| CN207896675U (en) | The retired battery of electric vehicle matching energy storage inverter compatible with new battery | |
| CN101267040A (en) | Grid-connected fuel cell system and load using the same | |
| Bhuyan et al. | Fuel cell connected to grid through inverter | |
| CN107193312B (en) | A kind of list battery core simulator | |
| CN111404248A (en) | Micro-grid system and method based on coupling of fuel cell test and charging pile | |
| CN102347498A (en) | Pressurizer for fuel cell and method thereof | |
| TWI416788B (en) | Fuel cell system | |
| KR20120001335A (en) | Dual loop control apparatus for dc/dc converter of grid-connection typed fuel cell generating system and control method thereof | |
| CN103683959A (en) | Power unit burn-in method for high-voltage frequency converter | |
| CN207764330U (en) | It is a kind of that the fully loaded test system of frequency converter is realized using SVG | |
| CN204578377U (en) | A kind of cascade-mixing transformation apparatus in parallel | |
| CN204465446U (en) | A kind of photovoltaic generating system topological structure based on direct current photovoltaic module | |
| CN114337322A (en) | Hydrogen production power supply system | |
| CN209803302U (en) | Fuel cell test system capable of efficiently utilizing electric energy | |
| CN203645344U (en) | Hybrid AC/DC microgrid control system | |
| CN112018852B (en) | DCDC protection control system and method for hydrogen fuel cell vehicle | |
| CN111404184A (en) | Fuel cell test and electric vehicle charging coupling system and control method | |
| CN108169605A (en) | A kind of test system and method being fully loaded with using SVG realization frequency converters | |
| CN201194369Y (en) | Ultra-high-voltage DC generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120208 |