CN111046254A - Programmable non-isolated DC-DC converter topology searching method - Google Patents
Programmable non-isolated DC-DC converter topology searching method Download PDFInfo
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- CN111046254A CN111046254A CN201911265486.0A CN201911265486A CN111046254A CN 111046254 A CN111046254 A CN 111046254A CN 201911265486 A CN201911265486 A CN 201911265486A CN 111046254 A CN111046254 A CN 111046254A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000012216 screening Methods 0.000 claims abstract description 41
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 claims description 4
- 238000004590 computer program Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
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Abstract
The invention discloses a programmable non-isolated DC-DC converter topology searching method, which comprises the following steps: dividing the non-isolated DC-DC converter into a first structure, a second structure and a third structure; setting a second structure comprising the types and the number of devices, and carrying out structure initialization on the second structure to generate a netlist H; performing first condition screening on the network table H with the second structure to generate a network table G; combining the first structure, the third structure and the screened second structure network table G to obtain a network table F; and screening the network table F by using a second condition to generate all feasible topology network tables E. The method can search the topology of the non-isolated DC-DC converter, and realize the function of searching the topology of the non-isolated DC-DC converter by using a computer program mode.
Description
Technical Field
The invention relates to the technical field of power electronics, in particular to a programmable non-isolated DC-DC converter topology searching method.
Background
The non-isolated DC-DC converter plays an important role in various applications in the field of new energy power generation, data center power systems, satellite power systems, consumer electronics and the like. In the face of increasingly complex application fields, the conventional Buck, Boost and other converters are difficult to meet future requirements, and therefore a novel DC-DC converter needs to be researched.
The current proposals for new non-isolated DC-DC converters are generally done in several ways: (1) the method is characterized in that a new topology is constructed by using basic structures such as a switched capacitor, a switched inductor, a voltage doubling unit and the like, but the method can realize the construction of various topologies, but the method is composed of a plurality of basic structures and is difficult to realize new breakthrough; (2) depending on practical experience, a new topology is constructed, but the topology obtained by the method has randomness, and more new topologies are difficult to form; (3) the new topology is formed by using basic laws such as graph theory and the like, but the method has strong binding force, can only be constructed aiming at the topology of a certain structure, and needs a great amount of scientific researchers to select the topology.
In order to improve the innovation of the topology, more novel and practical topologies are provided, and the time consumed by scientific researchers in providing the new topology is reduced, further research and development of a method for providing the non-isolated DC-DC converter topology are needed.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the invention aims to provide a programmable non-isolated DC-DC converter topology searching method, which can search the topology of the non-isolated DC-DC converter and realize the function of searching the topology of the non-isolated DC-DC converter by using a computer program mode.
In order to achieve the above object, an embodiment of the present invention provides a programmable non-isolated DC-DC converter topology searching method, including the following steps: dividing the non-isolated DC-DC converter into a first structure, a second structure and a third structure; setting the second structure to contain the device types and the number, and carrying out structure initialization on the second structure to generate a network table H; performing first condition screening on the network table H with the second structure to generate a network table G; combining the first structure, the third structure and the screened second structure network table G to obtain a network table F; and screening the network table F by using a second condition to generate all feasible topology network tables E.
The programmable non-isolated DC-DC converter topology searching method provided by the embodiment of the invention realizes the function of searching the topology of the non-resonant non-isolated DC-DC converter through a computer, can improve the working efficiency of scientific researchers, improves the innovation of the topology, and promotes more novel topologies to be explored.
In addition, the programmable non-isolated DC-DC converter topology searching method according to the above embodiment of the present invention may further have the following additional technical features:
further, in an embodiment of the present invention, the first structure is an input side structure of the non-isolated DC-DC converter, the second structure is an intermediate switch network structure of the non-isolated DC-DC converter, and the third structure is an output side structure of the non-isolated DC-DC converter.
Further, in one embodiment of the present invention, the device types in the second structure include a power switch device, a diode, an inductor, a capacitor, and a coupling inductor.
Further, in one embodiment of the present invention, the first conditional screening includes: the device in the second structure is not connected with screening; screening devices in the second structure in series-parallel connection; and (4) redundant screening.
Further, in an embodiment of the present invention, the network table F obtained by combining the first structure, the third structure and the screened second structure network table G needs to consider a positive direction of a device.
Further, in one embodiment of the present invention, the second condition includes: screening short circuits between a power supply and an energy storage element; screening open circuits of the loop; input and output direct screening; and (4) redundant screening.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow diagram of a programmable non-isolated DC-DC converter topology searching method according to an embodiment of the invention;
FIG. 2 is a flow diagram of a first condition screening of a programmable non-isolated DC-DC converter topology searching method according to one embodiment of the invention;
FIG. 3 is a flow diagram of a second condition screening of a programmable non-isolated DC-DC converter topology searching method according to an embodiment of the invention;
FIG. 4 is a converter topology group having an intermediate structure with 1 switch, 1 diode, 1 inductor, according to one embodiment of the present invention;
fig. 5 is a programmable non-isolated DC-DC converter topology searching method according to an embodiment of the present invention, and a topology structure obtained by performing a computer search on the converter shown in fig. 4.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The programmable non-isolated DC-DC converter topology searching method proposed according to the embodiment of the present invention is described below with reference to the accompanying drawings.
FIG. 1 is a flow diagram of a programmable non-isolated DC-DC converter topology searching method according to one embodiment of the invention.
As shown in fig. 1, the programmable non-isolated DC-DC converter topology searching method includes the following steps:
in step S101, the non-isolated DC-DC converter is divided into a first configuration, a second configuration, and a third configuration.
The first structure is an input side structure of the non-isolated DC-DC converter, the second structure is an intermediate switch network structure of the non-isolated DC-DC converter, and the third structure is an output side structure of the non-isolated DC-DC converter.
In step S102, a second structure including the device type and the number is set, and the structure initialization is performed on the second structure to generate a netlist H.
It can be understood that, according to the requirements and applications, the types and the number of the devices included in the second structure are set, wherein the types of the devices in the second structure include a power switch device, a diode, an inductor, a capacitor, and a coupling inductor; then, the second structure is initialized to generate a net list H.
In step S103, a first conditional filtering is performed on the network table H having the second configuration, and a network table G is generated.
Wherein, as shown in fig. 2, the first conditional screening includes: (1) the internal devices of the second structure are not connected with screening; (2) screening devices in the second structure in series-parallel connection; (3) and (4) redundant screening.
In step S104, the first structure, the third structure and the screened second structure network table G are combined to obtain a network table F.
And combining the first structure, the third structure and the screened second structure network table G to obtain a network table F, wherein the positive direction of the device needs to be considered.
In step S105, the network table F is screened by the second condition, and all feasible topology network tables E are generated.
Wherein, as shown in fig. 3, the second condition includes: (1) short-circuit screening of a power supply and an energy storage element; (2) screening open circuits of the loop; (3) input and output direct screening; (4) and (4) redundant screening.
It should be noted that, a programmable non-isolated DC-DC converter topology searching method proposed by the embodiment of the present invention can be used for searching a non-isolated DC-DC converter topology in a non-resonant condition.
A programmable non-isolated DC-DC converter topology searching method according to an embodiment of the present invention is verified below with reference to a specific embodiment.
Fig. 4 is a converter topology group having an intermediate structure with 1 switch, 1 diode, and 1 inductor, and three converters having a common first structure and a common third structure, so that a programmable non-isolated DC-DC converter topology searching method according to an embodiment of the present invention can be verified, and specifically includes the following steps:
step S101, dividing the three converters shown in fig. 4(a), 4(b), and 4(c) into a first configuration, a second configuration, and a third configuration, and the result is shown in fig. 4;
step S102, setting the types and the number of devices contained in a second structure, wherein the second structure comprises 1 switching tube, 1 diode and 1 inductor; carrying out structure initialization on the second structure to generate a network table H with 216 structures;
step S103, performing first condition screening on the second structure network table H, wherein 196 structures are obtained after screening by disconnecting the internal devices of the second structure, the matrix is changed into 120 structures after screening by connecting the internal devices of the second structure in series and in parallel, and the matrix is changed into 5 structures after screening by redundant screening to obtain a network table G;
step S104, combining the first structure, the third structure and the screened second structure G to obtain a network table F, wherein the network table F has 480 structures;
step S105, performing (1) power supply and energy storage element short circuit screening, (2) loop circuit breaking screening, (3) 12 conditions remaining after input and output through screening, and (4) 3 conditions remaining after redundant screening on the network table F. The remaining 3 cases are used to generate a new net table G, which is shown in table 1, table 2, table 3:
the three results shown in tables 1, 2 and 3 were converted to the topology of the converter as shown in fig. 5. By comparing the topology shown in fig. 5 with the topology shown in fig. 4, it can be found that the Buck, Boost and Buck-Boost converters can be obtained by searching the programmable non-isolated DC-DC converter topology searching method provided by the embodiment of the invention by using a computer program, and the correctness of the programmable non-isolated DC-DC converter topology searching method provided by the embodiment of the invention is verified.
In summary, through verification of the specific embodiment, it is proved that the programmable non-isolated DC-DC converter topology search provided by the embodiment of the present invention can search out topology structures under all possible conditions by inputting the number and types of devices of the second structure of the converter, reduce time consumed by researchers in researching new topologies, and improve efficiency.
The programmable non-isolated DC-DC converter topology searching method provided by the embodiment of the invention realizes the function of searching the topology of the non-resonant non-isolated DC-DC converter through a computer, can improve the working efficiency of researchers, improves the innovation of the topology, and promotes more novel topologies to be explored.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (5)
1. A programmable non-isolated DC-DC converter topology searching method is characterized by comprising the following steps:
dividing the non-isolated DC-DC converter into a first structure, a second structure and a third structure;
setting the second structure to contain the device types and the number, and carrying out structure initialization on the second structure to generate a network table H;
performing first condition screening on the network table H with the second structure to generate a network table G;
combining the first structure, the third structure and the screened second structure network table G to obtain a network table F; and
and screening the network table F by using a second condition to generate all feasible topology network tables E.
2. The method of claim 1, wherein the first configuration is an input-side configuration of the non-isolated DC-DC converter, wherein the second configuration is an intermediate switching network configuration of the non-isolated DC-DC converter, and wherein the third configuration is an output-side configuration of the non-isolated DC-DC converter.
3. The method of claim 1, wherein the device types in the second structure comprise power switches, diodes, inductors, capacitors, and coupled inductors.
4. The method of claim 1, wherein the first conditional screening comprises:
the device in the second structure is not connected with screening;
screening devices in the second structure in series-parallel connection;
and (4) redundant screening.
5. The method of claim 1, wherein the second condition comprises:
screening short circuits between a power supply and an energy storage element;
screening open circuits of the loop;
input and output direct screening;
and (4) redundant screening.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113691149A (en) * | 2021-08-03 | 2021-11-23 | 北京交通大学 | Common direct current side capacitive multilevel converter topology generation method and system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040172603A1 (en) * | 2003-02-14 | 2004-09-02 | Iwatt | Multi-output power supply design system |
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| US20040172603A1 (en) * | 2003-02-14 | 2004-09-02 | Iwatt | Multi-output power supply design system |
Non-Patent Citations (2)
| Title |
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| DRAGAN MAKSIMOVIC等: "GENERAL PROPERTIES AND SYNTHESIS OF PWM DC-to-DC CONVERTERS" * |
| GUIPENG CHEN 等: "Programmable Topology Derivation and Analysis of Integrated Three-Port DC–DC Converters With Reduced Switches for Low-Cost Applications" * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113691149A (en) * | 2021-08-03 | 2021-11-23 | 北京交通大学 | Common direct current side capacitive multilevel converter topology generation method and system |
| CN113691149B (en) * | 2021-08-03 | 2023-09-26 | 北京交通大学 | Topology generation method and system for common direct current side capacitor type multi-level converter |
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