CN107887965B - Method for verifying matching of solar cell circuit and shunt regulating circuit for space - Google Patents
Method for verifying matching of solar cell circuit and shunt regulating circuit for space Download PDFInfo
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- CN107887965B CN107887965B CN201711043621.8A CN201711043621A CN107887965B CN 107887965 B CN107887965 B CN 107887965B CN 201711043621 A CN201711043621 A CN 201711043621A CN 107887965 B CN107887965 B CN 107887965B
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 title abstract description 18
- 238000012795 verification Methods 0.000 claims abstract description 49
- 238000011161 development Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
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- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention provides a method for verifying the matching of a solar cell circuit and a shunt regulating circuit for space, which is used for verifying the matching of a large-area real solar cell circuit and the shunt regulating circuit by combining a small amount of real solar cell circuits with a solar array simulator and performing matching verification with the shunt regulating circuit, thereby solving the problem that the matching of the large-area real solar cell circuit and the shunt regulating circuit is difficult to verify, optimizing verification items, saving development cost and improving efficiency.
Description
Technical Field
The invention relates to the field of aircraft power supply-shunt regulation control verification, in particular to a method for verifying the matching of a solar battery circuit and a shunt regulation circuit for a space.
Background
The solar cell circuit is widely applied to the field of spacecrafts such as satellites and space stations, and solar cells selected by the existing spacecraft power supply system comprise silicon solar cells, gallium arsenide solar cells, thin film solar cells and the like. In order to ensure that the voltage of a power supply bus of the spacecraft meets the design requirement, a power supply system needs to be provided with a corresponding shunt regulating circuit. The parameters of the shunt regulating circuit are different due to different corresponding electrical characteristics of different types of solar cells, and in order to ensure that the designed shunt regulating circuit is matched with the characteristic parameters of the selected solar cell circuit and ensure that the quality of the bus voltage meets the requirements, the matching between the shunt regulating circuit and the solar cell circuit needs to be verified on the ground.
For aircrafts such as space stations, ChangE detectors and the like which are provided with large-area solar cell circuits, if all real solar cell circuits are put into production and matched with a shunt regulating circuit for verification, the cost is too high and the realization is difficult; if the solar cell wings are all simulated by adopting the electronic power supply, the matching of the real junction capacitance effect of the solar cell and the shunt circuit cannot be verified. In short, the matching verification of the large-area battery circuit and the shunt regulating circuit is not easy to realize on the ground.
Disclosure of Invention
The invention mainly aims to provide a method for verifying the matching between a solar cell circuit for space and a shunt regulation circuit, so as to solve the problem that the verification of the matching between a large-area cell circuit and the shunt regulation circuit on the ground is difficult to realize in the prior art.
In order to achieve the aim, the invention provides a method for verifying the matching performance of a solar cell circuit and a shunt regulating circuit for space, which is characterized in that a verification system consisting of a reference product and ground equipment is used for verification, a real solar cell circuit board and a solar array simulator are combined for verification, and the method for verifying the matching performance comprises the following steps:
the method comprises the steps that firstly, a real solar cell circuit board and a solar array simulator are connected into a power supply circuit of a shunt regulator in a verification system, the total number of the power supply circuit is N, the circuits of the real solar cell circuit board are respectively an Mth circuit and an M +1 th circuit in the shunt sequence, wherein M, N and P are integers, M is not less than 1, P is not less than 0, and N is more than M + P;
gradually reducing the load under the condition that the verification system, the solar array simulator and the real solar cell circuit board supply power together, enabling an Mth path to an Mth + P path of the real solar cell circuit board to be in linear shunt and/or switch shunt in sequence, observing the size of bus ripples, and recording data;
adjusting the electronic load under the condition that the verification system and the real solar cell circuit board supply power together, so that the front 1 path (the (M-1) th path) of the real solar cell circuit board is shunted, the load is gradually reduced, the Mth path to the (M + P) th path of the real solar cell circuit board are shunted step by step, the size of bus ripple is observed, and data is recorded; then, gradually increasing the load to ensure that the path from the M + P to the path M is not shunted step by step, observing the size of bus ripple waves, and recording data;
step four, under the state that the verification system and the real solar cell circuit board supply power together, adjusting the electronic load to shunt the first 1 (M-1) paths of the real solar cell circuit board, gradually reducing the load to jump and shunt the Mth path and the M +1 path of the real solar cell circuit board, observing the size of bus ripples and recording data; continuously and gradually reducing the load to shunt the (M + P) th path of the real solar cell circuit board; and then, gradually increasing the load, so that the (M + P) th path and the (M + P-1) th path of the real solar cell circuit board jump without shunting, observing the size of bus ripple, and recording data.
Further, M + P is not less than 3.
Further, N > 5.
Further, after the step one, the method further comprises the following steps: and after the real solar cell circuit board and the solar array simulator are accessed into the verification system, a total verification system is formed, and the functionality verification is carried out on the total verification system.
By applying the technical scheme of the invention, the matching verification is carried out by combining the real solar cell circuit board and the solar array simulator, and the problem that the matching of a large-area cell circuit and a shunt regulating circuit in the prior art is difficult to realize on the ground is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a block diagram of a solar cell circuit and shunt regulator match verification connection.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, the thicknesses of layers and regions are exaggerated for clarity, and the same apparatus products are denoted by the same reference numerals, and thus the description thereof will be omitted.
Referring to fig. 1, the invention provides a method for verifying the matching between a solar cell circuit and a shunt regulator circuit for space use, which is to use a verification system composed of a reference product and ground equipment to verify, and combine a real solar cell circuit board with a solar array simulator, i.e. a verification test scheme is formulated according to the shunt regulation principle and the design characteristics of the solar cell circuit, and the matching verification is performed by using a method of combining the real solar cell circuit board with the solar array simulator, wherein the shunt principle is generally sequential shunting step by step, and the shunt sequence is the 1 st, 2 nd and 3 ∙ ∙ ∙ N ways.
The matching verification method comprises the following steps:
the method comprises the steps that firstly, a real solar cell circuit board and a solar array simulator are connected into a power supply circuit of a shunt regulator in a verification system, the total number of the power supply circuit is N, the circuits of the real solar cell circuit board are respectively an Mth circuit and an M +1 th circuit in the shunt sequence, wherein M, N and P are integers, M is not less than 1, P is not less than 0, and N is more than M + P;
gradually reducing the load under the condition that the verification system, the solar array simulator and the real solar cell circuit board supply power together, enabling an Mth path to an Mth + P path of the real solar cell circuit board to be in linear shunt and/or switch shunt in sequence, observing the size of bus ripples, and recording data;
adjusting the electronic load under the condition that the verification system and the real solar cell circuit board supply power together, so that the front 1 path (the (M-1) th path) of the real solar cell circuit board is shunted, the load is gradually reduced, the Mth path to the (M + P) th path of the real solar cell circuit board are shunted step by step, the size of bus ripple is observed, and data is recorded; then, gradually increasing the load to ensure that the path from the M + P to the path M is not shunted step by step, observing the size of bus ripple waves, and recording data;
step four, under the state that the verification system and the real solar cell circuit board supply power together, adjusting the electronic load to shunt the first 1 (M-1) paths of the real solar cell circuit board, gradually reducing the load to jump and shunt the Mth path and the M +1 path of the real solar cell circuit board, observing the size of bus ripples and recording data; continuously and gradually reducing the load to shunt the (M + P) th path of the real solar cell circuit board; and then, gradually increasing the load, so that the (M + P) th path and the (M + P-1) th path of the real solar cell circuit board jump without shunting, observing the size of bus ripple, and recording data.
In order to ensure the verification effect, the real solar cell circuit board at least comprises 3 real solar cell circuits, namely M + P is more than or equal to 3.
The total number of battery circuits of a general power supply system is more than 5, namely N is more than 5.
Generally, after a real solar cell circuit board and a solar array simulator are accessed to a verification system to form a total verification system, the functionality of the total verification system needs to be verified to ensure that subsequent verification work is smoothly carried out.
The invention is further explained below with reference to a matching test of a solar cell circuit and a shunt regulator of a certain target aircraft:
step one, a verification test system is formed by a reference product and ground equipment according to the figure 1, a real solar cell circuit and a solar array simulator are connected into the verification test system, the number of power supply circuits of a shunt regulator is 24, and the real solar cell circuit of an EM (electromagnetic field) plate is respectively connected into a power supply circuit of the 11 th path, a power supply circuit of the 12 th path and a power supply circuit of the 13 th path of the shunt regulator.
And step two, performing functional verification according to the verification test rules to ensure that each part works normally before testing.
And step three, gradually adjusting the load, reducing the amplitude of the adjusted load after the 10 th path is shunted, enabling the 11 th path of shunt circuit to be in a switch shunt state, observing the size of bus ripples by using an oscilloscope, and recording data as shown in table 1. And sequentially reducing the load continuously, so that the 12 th shunt circuit is in a switch shunt state, then the 13 th shunt circuit is in a switch shunt state, and sequentially recording data as shown in tables 2 and 3.
TABLE 1 11 th way switch area stream matching test data table
TABLE 2 12 th branch switch area flow matching test data table
TABLE 3 13 th channel switch area stream matching test data table
And when the 10 th path is shunted, reducing the amplitude of the regulating load. And reducing the load, so that the 11 th path, the 12 th path and the 13 th path are subjected to jump shunting. On the contrary, the load is increased from 8.5A to 10.8A, and the 11 th path, the 12 th path and the 13 th path are suddenly changed from the shunting state to the non-shunting state, and data and bus waveforms are recorded.
Analyzing the obtained data and bus waveform to draw the following conclusion:
a. under each shunting working condition, the maximum ripple of the bus is 270 mV;
b. in the test process, the illumination condition is that the single-path working current is about 1A, in the shunting process, the switching duty ratio of the shunt is adjustable, the jump amplitude of the single-path current is about 6.5A, and the pulse peak width is about 4 us;
c. under the influence of the junction capacitance of the solar cell circuit, the solar cell circuit is in a charging and discharging working state. When the working voltage of the solar circuit is reduced, the circuit is discharged, when the working voltage of the solar circuit is increased, the circuit is charged, the switching period of the separator is calculated by the charging and discharging waveforms to be about 60us, and the switching frequency corresponding to the current divider is about 16 kHz.
d. Under each shunting working condition, the solar cell wing has good matching performance with the shunt regulator.
In actual production, the switch shunt state is sometimes a linear shunt state, and matching verification only needs to be performed according to actual conditions.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the solar cell system has the advantages that a small number of real solar cell circuits are combined with the solar array simulator and are subjected to matching verification with the shunt regulating circuit, so that the problem that the matching of large-area real solar cell circuits and the shunt regulating circuit is not easy to verify is solved, verification items are optimized, development cost is saved, efficiency is improved, and reference is provided for matching verification of large-area real solar cell wings and the shunt regulating circuit.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A method for verifying the matching of a solar cell circuit and a shunt regulation circuit for a space utilizes a verification system consisting of a reference product and ground equipment to verify, and is characterized in that a real solar cell circuit board and a solar array simulator are combined to verify, and the method for verifying the matching comprises the following steps:
the method comprises the following steps that firstly, a real solar cell circuit board and a solar array simulator are connected into a power supply circuit of a shunt regulator in a verification system, the total number of the power supply circuit is N, the circuits of the real solar cell circuit board are respectively an Mth circuit and an M +1 th circuit in the shunting sequence, wherein M, N and P are integers, M is more than or equal to 1, P is more than or equal to 0, and N is more than M + P;
gradually reducing the load in a state that the verification system, the solar array simulator and the real solar cell circuit board supply power together, so that the Mth path to the Mth and the P + th paths of the real solar cell circuit board are in linear shunt or switch shunt in sequence, observing the size of bus ripples, and recording data;
adjusting an electronic load under the state that the verification system and the real solar cell circuit board supply power together, so that the front 1 path (the (M-1) th path) of the real solar cell circuit board is shunted, the load is gradually reduced, the Mth path to the (M + P) th path of the real solar cell circuit board are shunted step by step, the size of bus ripple is observed, and data is recorded; then, gradually increasing the load to ensure that the path from the M + P to the path M is not shunted step by step, observing the size of bus ripple waves, and recording data;
step four, under the state that the verification system and the real solar cell circuit board supply power together, adjusting an electronic load to shunt the first 1 path (the M-1 path) of the real solar cell circuit board, gradually reducing the load to enable the Mth path and the M +1 path of the real solar cell circuit board to jump and shunt, observing the size of bus ripples, and recording data; continuously and gradually reducing the load to shunt the (M + P) th path of the real solar cell circuit board; and then, gradually increasing the load, so that the Mth + P path and the Mth + P-1 path of the real solar cell circuit board jump without shunting, observing the size of bus ripple, and recording data.
2. The method for verifying the matching between a space solar battery circuit and a shunt regulation circuit according to claim 1, wherein M + P is greater than or equal to 3.
3. The method for verifying the matching between a spatial solar cell circuit and a shunt regulator circuit according to claim 1, wherein N > 5.
4. The method for verifying the matching between a spatial solar cell circuit and a shunt regulator circuit according to claim 1, further comprising the following steps after the first step: and after the real solar cell circuit board and the solar array simulator are accessed into the verification system, a total verification system is formed, and the functionality verification is carried out on the total verification system.
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