CN111046254B - 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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- CN111046254B CN111046254B CN201911265486.0A CN201911265486A CN111046254B CN 111046254 B CN111046254 B CN 111046254B CN 201911265486 A CN201911265486 A CN 201911265486A CN 111046254 B CN111046254 B CN 111046254B
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000012216 screening Methods 0.000 claims abstract description 37
- 238000004146 energy storage Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000004590 computer program Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/903—Querying
- G06F16/90335—Query processing
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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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- Dc-Dc Converters (AREA)
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 quantity of devices, and initializing the second structure to generate a network table H; performing first condition screening on the network table H of 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 the second condition to generate all feasible topology network tables E. The method can search 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 the field of new energy power generation, a data center power supply system, a satellite power supply system, consumer electronics and other various applications. In the face of increasingly complex application fields, the conventional Buck, boost and other converters are difficult to meet future requirements, so that a novel DC-DC converter needs to be explored.
The current proposals for new non-isolated DC-DC converters are generally made by several means: (1) The novel topology is built by using basic structures such as a switch capacitor, a switch inductor, a voltage doubling unit and the like, but the method can realize the construction of various topologies, but is formed by several basic structures, so that the novel breakthrough is difficult to realize; (2) Depending on practical experience, a new topology is constructed, but the topology obtained by the method has randomness, and more novel topologies are difficult to form; (3) The novel topology is formed by using basic laws such as graph theory, but the method has strong constraint force, can only be constructed for the topology of a certain structure, and needs to take a large number of scientific researchers to select the topology.
In order to improve the innovative topology, more novel and practical topologies are provided, the time consumed by scientific researchers in providing new topologies is reduced, and further research and development of a non-isolated DC-DC converter topology providing method are required.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
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 searching function of the non-isolated DC-DC converter topology by using a computer program mode.
In order to achieve the above objective, the embodiment of the present invention provides a programmable non-isolated DC-DC converter topology searching method, which includes the following steps: dividing the non-isolated DC-DC converter into a first structure, a second structure and a third structure; setting the type and the number of the devices contained in the second structure, and initializing the structure of the second structure to generate a network table H; performing first condition screening on the network table H of 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 performing topology searching of the non-resonant non-isolated DC-DC converter through a computer, can improve the working efficiency of scientific researchers, improves the innovation of 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 one 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 switching 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 an embodiment of the present invention, the device types in the second structure include a power switching device, a diode, an inductance, a capacitance, and a coupling inductance.
Further, in one embodiment of the present invention, the first condition screening includes: the second structure internal devices are not connected and screened; screening the internal devices of the second structure in series-parallel connection; and (5) redundant screening.
Further, in an embodiment of the present invention, the combination of the first structure, the third structure and the screened second structure netlist G to obtain the netlist F needs to consider the positive direction of the device.
Further, in an embodiment of the present invention, the second condition includes: screening short circuits between a power supply and an energy storage element; loop circuit breaking screening; input-output direct screening; and (5) 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 invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a flow chart of a programmable non-isolated DC-DC converter topology search method according to an embodiment of the invention;
FIG. 2 is a flow chart of a first condition screening method of a programmable non-isolated DC-DC converter topology searching method according to an embodiment of the invention;
FIG. 3 is a flow chart of a second condition screening method of a programmable non-isolated DC-DC converter topology searching method according to an embodiment of the invention;
FIG. 4 is a diagram of a topology group of a converter with 1 switch, 1 diode, 1 inductor in an intermediate configuration in accordance with one embodiment of the present invention;
fig. 5 is a topology of a programmable non-isolated DC-DC converter topology search method according to an embodiment of the invention, the topology being obtained by computer searching the converter of fig. 4.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The topology searching method of the programmable non-isolated DC-DC converter according to the embodiment of the invention is described below with reference to the accompanying drawings.
FIG. 1 is a flow chart of a programmable non-isolated DC-DC converter topology search method of an embodiment of the invention.
As shown in fig. 1, the programmable non-isolated DC-DC converter topology searching method includes the steps of:
in step S101, the non-isolated DC-DC converter is divided into a first structure, a second structure, and a third structure.
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, the second structure is set to include the device types and the number, and the second structure is initialized to generate the netlist H.
It can be understood that the type and the number of the devices included in the second structure are set according to the requirements and the applications, wherein the type of the devices in the second structure includes a power switch device, a diode, an inductor, a capacitor and a coupling inductor; then, the second structure is initialized to generate a netlist H.
In step S103, the first condition screening is performed on the network table H of the second structure, and the network table G is generated.
Wherein, as shown in fig. 2, the first condition screening includes: (1) second structure internal device disconnection screening; (2) screening the internal devices of the second structure in series-parallel connection; (3) redundant screening.
In step S104, the first structure, the third structure and the screened second structure net list G are combined to obtain a net list F.
The network table F is obtained by combining the first structure, the third structure and the screened second structure network table G, and the positive direction of the device needs to be considered.
In step S105, the network table F is screened using the second condition, and all possible 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) loop circuit breaking screening; (3) input/output through screening; (4) redundant screening.
It should be noted that the proposed method for searching the topology of the programmable non-isolated DC-DC converter according to the embodiments of the present invention may be used for searching the topology of the non-isolated DC-DC converter under the non-resonance condition.
A programmable non-isolated DC-DC converter topology search method in accordance with an embodiment of the present invention is verified as follows.
Fig. 4 shows a topology group of converters with 1 switch, 1 diode, and 1 inductor in an intermediate configuration, and three converters with a common first configuration and a third configuration, according to an embodiment of the present invention, so that the topology group search method of a programmable non-isolated DC-DC converter 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 structure, a second structure, and a third structure, 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; initializing the second structure to generate a network table H, wherein the network table H has 216 structures;
step S103, carrying out first condition screening on the second structure network table H, wherein 196 structures are screened after the second structure internal devices are not connected, then the second structure internal devices are screened in series and parallel, the screened matrix is changed into 120 structures, and finally the redundant screening is carried out, and the screened matrix is changed into 5 structures, so as to obtain the 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) input/output through screening, and then remaining 12 cases, and (4) redundancy screening, and then remaining 3 cases. The remaining 3 cases were generated into a new network table G, shown in tables 1, 2, and 3:
the three results shown in tables 1, 2 and 3 were converted into 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 after searching by using a computer program, the proposed topology searching method for the programmable non-isolated DC-DC converter in the embodiment of the invention can obtain a Buck, boost, buck-Boost converter, and the correctness of the proposed topology searching method for the programmable non-isolated DC-DC converter in the embodiment of the invention is verified.
In a word, through the verification of the specific embodiment, the topology searching of the programmable non-isolated DC-DC converter provided by the embodiment of the invention can search out the topology structures under all possible conditions by inputting the number and the types of the devices of the second structure of the converter, thereby reducing the time consumed by scientific researchers in researching new topology and improving the efficiency.
The programmable non-isolated DC-DC converter topology searching method provided by the embodiment of the invention realizes the function of performing topology searching of the non-resonant non-isolated DC-DC converter through a computer, can improve the working efficiency of scientific researchers, improves the innovations of topology, and promotes more novel topologies to be explored.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 present invention. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (2)
1. A programmable non-isolated DC-DC converter topology search method, comprising the steps of:
dividing the non-isolated DC-DC converter into a first structure, a second structure and a third structure;
setting the type and the number of the devices contained in the second structure, and initializing the structure of the second structure to generate a network table H;
performing first condition screening on the network table H of 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; wherein,
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;
the first condition screening comprises: the second structure internal devices are not connected and screened; screening the internal devices of the second structure in series-parallel connection; redundant screening;
the second condition includes: screening short circuits between a power supply and an energy storage element; loop circuit breaking screening; input-output direct screening; and (5) redundant screening.
2. The method of claim 1, wherein the device types in the second structure include power switching devices, diodes, inductors, capacitors, and coupling inductors.
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Non-Patent Citations (2)
| Title |
|---|
| Dragan Maksimovic等.GENERAL PROPERTIES AND SYNTHESIS OF PWM DC-to-DC CONVERTERS.20th Annual IEEE Power Electronics Specialists Conference.2002,515-525页. * |
| Guipeng Chen 等.Programmable Topology Derivation and Analysis of Integrated Three-Port DC–DC Converters With Reduced Switches for Low-Cost Applications.IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS.2018,第66卷(第9期),6649-6660页. * |
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