Method, device, equipment, storage medium and program product for determining transformer core eddy current loss

Abstract

A method, apparatus, device, storage medium, and program product for determining eddy current loss in a transformer core include: constructing a multi-level transformer core model; constructing an n-layer multi-level seamed core model based on the dimensions of the multi-level seamed core; replacing corresponding regions in the multi-level transformer core model with the n-layer multi-level seamed core model to obtain the replaced multi-level transformer core model; determining eddy current loss results corresponding to the n-layer laminated core in the replaced multi-level transformer core model; repeatedly constructing the n-layer multi-level seamed core model based on the dimensions of the multi-level seamed core until all regions in the multi-level transformer core model are replaced, obtaining eddy current loss results corresponding to multiple n-layer laminated cores; and determining the eddy current loss results of the transformer core based on the eddy current loss results corresponding to the multiple n-layer laminated cores. This method can accurately determine the eddy current loss results of the transformer core.

Description

Technical Field

[0001] The present application relates to the field of electric power technology, and in particular to a method, device, equipment, storage medium and program product for determining eddy current loss in a transformer core. Background Art

[0002] Ultra-high voltage transformers are key components of ultra-high voltage AC power transmission projects. They change voltage levels within power systems, and their operating efficiency and stability directly impact the safe and stable operation of ultra-high voltage transmission lines. The alternating magnetic field in the transformer core generates an induced electromotive force, generating eddy currents in the circuit. The thermal effect of eddy currents in this circuit is called eddy current loss, a component of transformer iron loss. Generally speaking, eddy current loss is negligible for small transformers due to their small size. However, ultra-high voltage transformers are large, requiring more accurate calculation of eddy current loss.

[0003] Therefore, how to accurately determine the eddy current loss of the transformer core has become an urgent problem to be solved. Summary of the Invention

[0004] The embodiments of the present application provide a method, apparatus, device, storage medium, and program product for determining the eddy current loss of a transformer core, which can accurately determine the eddy current loss result of the transformer core.

[0005] In a first aspect, an embodiment of the present application provides a method for determining eddy current loss in a transformer core, the method comprising:

[0006] Construct a multi-level model of the transformer core;

[0007] Based on the size information of the multi-level joint core, an n-layer multi-level joint core model is constructed; n is a positive integer;

[0008] The corresponding region in the transformer core multi-level model is replaced by the n-layer multi-level joint core model to obtain the replaced transformer core multi-level model;

[0009] Determine the eddy current loss results corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement; the position of the n-layer laminated core is the same as that of the n-layer multi-stage seam core model;

[0010] Repeat the steps of constructing an n-layer multi-stage seamed core model based on the size of the multi-stage seamed core until all regions in the transformer core multi-stage model are replaced, and obtain eddy current loss results corresponding to multiple n-layer laminated cores;

[0011] Based on the eddy current loss results corresponding to the multiple n-layer laminated cores, the eddy current loss results of the transformer core are determined.

[0012] In one embodiment, constructing a multi-stage model of a transformer core includes: constructing a model corresponding to each stage of the transformer core based on the size information of each stage of the transformer core; the size information includes the length and width of the core at this stage and the window width and window height of the core at this stage; and superimposing the models corresponding to each stage of the core to obtain a multi-stage model of the transformer core.

[0013] In one embodiment, determining the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model includes: adding material properties to the core, winding and shell in the replaced transformer core multi-stage model; drawing the mesh corresponding to the replaced transformer core multi-stage model; determining the parameters of the solver, and determining the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model based on the parameters of the solver, boundary conditions and mesh.

[0014] In one embodiment, material attributes are added to the core, windings, and casing of the replaced transformer core multi-stage model, including: adding silicon steel sheet material attributes to the core, adding pure copper material attributes to the windings, and adding steel material attributes to the casing of the replaced transformer core multi-stage model.

[0015] In one embodiment, the boundary conditions include at least one of the following: the current of the winding is the rated current; and the loss calculation node of the core is a preset loss calculation node.

[0016] In one embodiment, the method further includes: determining the rated current corresponding to the winding; and determining a preset loss calculation node corresponding to the core.

[0017] In a second aspect, the present application provides a device for determining eddy current loss in a transformer core, the device comprising:

[0018] Building module for building a multi-level model of transformer core;

[0019] The construction module is also used to construct an n-layer multi-level seam core model based on the size information of the multi-level seam core; n is a positive integer;

[0020] a processing module, configured to replace a corresponding region in the transformer core multi-level model with the n-layer multi-level seam core model to obtain a replaced transformer core multi-level model;

[0021] A determination module is used to determine the eddy current loss result corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement; the position of the n-layer laminated core is the same as the position of the n-layer multi-stage seam core model;

[0022] a processing module, configured to repeatedly execute the steps of constructing an n-layer multi-stage seamed core model based on the size of the multi-stage seamed core until all regions in the transformer core multi-stage model are replaced, thereby obtaining eddy current loss results corresponding to the multiple n-layer laminated cores;

[0023] The determination module is further configured to determine the eddy current loss result of the transformer core based on the eddy current loss results corresponding to the multiple n-layer laminated cores.

[0024] In a third aspect, the present application provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are performed:

[0025] Construct a multi-level model of the transformer core;

[0026] Based on the size information of the multi-level joint core, an n-layer multi-level joint core model is constructed; n is a positive integer;

[0027] The corresponding region in the transformer core multi-level model is replaced by the n-layer multi-level joint core model to obtain the replaced transformer core multi-level model;

[0028] Determine the eddy current loss results corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement; the position of the n-layer laminated core is the same as that of the n-layer multi-stage seam core model;

[0029] Repeat the steps of constructing an n-layer multi-stage seamed core model based on the size of the multi-stage seamed core until all regions in the transformer core multi-stage model are replaced, and obtain eddy current loss results corresponding to multiple n-layer laminated cores;

[0030] Based on the eddy current loss results corresponding to the multiple n-layer laminated cores, the eddy current loss results of the transformer core are determined.

[0031] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the following steps:

[0032] Construct a multi-level model of the transformer core;

[0033] Based on the size information of the multi-level joint core, an n-layer multi-level joint core model is constructed; n is a positive integer;

[0034] The corresponding region in the transformer core multi-level model is replaced by the n-layer multi-level joint core model to obtain the replaced transformer core multi-level model;

[0035] Determine the eddy current loss results corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement; the position of the n-layer laminated core is the same as that of the n-layer multi-stage seam core model;

[0036] Repeat the steps of constructing an n-layer multi-stage seamed core model based on the size of the multi-stage seamed core until all regions in the transformer core multi-stage model are replaced, and obtain eddy current loss results corresponding to multiple n-layer laminated cores;

[0037] Based on the eddy current loss results corresponding to the multiple n-layer laminated cores, the eddy current loss results of the transformer core are determined.

[0038] In a fifth aspect, the present application further provides a computer program product, comprising a computer program, which, when executed by a processor, implements the following steps:

[0039] Construct a multi-level model of the transformer core;

[0040] Based on the size information of the multi-level joint core, an n-layer multi-level joint core model is constructed; n is a positive integer;

[0041] The corresponding region in the transformer core multi-level model is replaced by the n-layer multi-level joint core model to obtain the replaced transformer core multi-level model;

[0042] Determine the eddy current loss results corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement; the position of the n-layer laminated core is the same as that of the n-layer multi-stage seam core model;

[0043] Repeat the steps of constructing an n-layer multi-stage seamed core model based on the size of the multi-stage seamed core until all regions in the transformer core multi-stage model are replaced, and obtain eddy current loss results corresponding to multiple n-layer laminated cores;

[0044] Based on the eddy current loss results corresponding to the multiple n-layer laminated cores, the eddy current loss results of the transformer core are determined.

[0045] The above-mentioned method, device, equipment, storage medium and program product for determining the eddy current loss of the transformer core can be used by computer equipment to construct a multi-level model of the transformer core; based on the size information of the multi-level seam core, an n-layer multi-level seam core model is constructed; n is a positive integer; the corresponding area in the multi-level model of the transformer core is replaced with the n-layer multi-level seam core model to obtain the replaced multi-level model of the transformer core; the eddy current loss result corresponding to the n-layer laminated core in the replaced multi-level model of the transformer core is determined; the position of the n-layer laminated core is the same as the position of the n-layer multi-level seam core model; the step of constructing the n-layer multi-level seam core model based on the size of the multi-level seam core is repeated until all areas in the multi-level model of the transformer core are replaced, and the eddy current loss results corresponding to the multiple n-layer laminated cores are obtained; the eddy current loss result of the transformer core is determined based on the eddy current loss results corresponding to the multiple n-layer laminated cores. Using this method, a computer device sequentially replaces corresponding areas in a transformer multi-level model with an n-layer multi-level seam core model, and calculates the flow loss of the n-layer laminated core included in the area in the replaced transformer core multi-level model. In this way, the eddy current can be confined to a smaller area, thereby accurately determining the eddy current loss corresponding to each n-layer laminated core. Furthermore, based on the eddy current loss results corresponding to multiple n-layer laminated cores, the eddy current loss results of the transformer core can be accurately determined. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments of the present application or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0047] Figure 1 This is a schematic diagram of an application scenario of a method for determining eddy current loss in a transformer core provided by an embodiment of the present application;

[0048] Figure 2 1 is a flow chart of a method for determining eddy current loss in a transformer core provided by an embodiment of the present application;

[0049] Figure 3 1 is a flow chart of another method for determining eddy current loss in a transformer core provided by an embodiment of the present application;

[0050] Figure 4 This is a schematic diagram of the overall geometric structure of a transformer core multi-stage model provided by an embodiment of the present application;

[0051] Figure 5It is a partially enlarged schematic diagram of a multi-stage seam core model provided in an embodiment of the present application;

[0052] Figure 6 1 is a schematic structural diagram of a device for determining eddy current loss in a transformer core provided by an embodiment of the present application;

[0053] Figure 7 It is a structural diagram of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0055] The following introduces the application scenarios of the method for determining the eddy current loss of the transformer core provided in the embodiment of the present application.

[0056] See Figure 1 , Figure 1 Schematic diagram of an application scenario of a method for determining eddy current loss of a transformer core provided by an embodiment of the present application. Figure 1 As shown, the computer device 101 ( Figure 1 In the figure, the computer device 101 is drawn as an example of a terminal device) and the computer device 102, wherein the computer device 101 is a device for simulation calculation, and the computer device 102 is a device of the transformer manufacturer. Data can be transmitted between the computer device 101 and the computer device 102 through the network.

[0057] Computer device 101 may first obtain a drawing corresponding to a transformer core from computer device 102, wherein the drawing includes dimension information of the transformer core. Computer device 101 may then construct a multi-level transformer core model based on the obtained dimension information; construct an n-layer multi-level seamed core model based on the dimension information of the multi-level seamed core, where n is a positive integer; replace corresponding regions in the multi-level transformer core model with the n-layer multi-level seamed core model to obtain a replaced multi-level transformer core model; determine an eddy current loss result corresponding to the n-layer laminated core in the replaced multi-level transformer core model; the position of the n-layer laminated core is the same as that of the n-layer multi-level seamed core model; repeatedly execute the steps of constructing the n-layer multi-level seamed core model based on the dimensions of the multi-level seamed core until all regions in the multi-level transformer core model are replaced, obtaining eddy current loss results corresponding to multiple n-layer laminated cores; and determine the eddy current loss result of the transformer core based on the eddy current loss results corresponding to the multiple n-layer laminated cores. In this way, the computer device sequentially replaces the corresponding area in the transformer multi-level model with the n-layer multi-level seam core model, and calculates the flow loss of the n-layer laminated core included in the area in the replaced transformer core multi-level model. In this way, the eddy current can be confined to a smaller area, so that the eddy current loss corresponding to each n-layer laminated core can be accurately determined. Furthermore, based on the eddy current loss results corresponding to multiple n-layer laminated cores, the eddy current loss results of the transformer core can be accurately determined.

[0058] Optionally, both computer device 101 and computer device 102 may be terminal devices or servers. The terminal devices mentioned herein may include, but are not limited to, smartphones, tablet computers, laptop computers, desktop computers, smart watches, smart TVs, and smart car terminals. The servers mentioned herein may be independent physical servers, or they may be server clusters or distributed systems composed of multiple physical servers.

[0059] See Figure 2 , Figure 2 1 is a flow chart of a method for determining eddy current loss of a transformer core provided by an embodiment of the present application. The method can be executed by a computer device (for example, the computer device 101 mentioned above). Figure 2 As shown, the method for determining the eddy current loss of the transformer core may include but is not limited to the following steps:

[0060] S201. Construct a multi-level model of the transformer core.

[0061] Among them, computer equipment can build a multi-level model of the transformer core in simulation software.

[0062] S202: Construct an n-layer multi-stage seamed core model based on the size information of the multi-stage seamed core.

[0063] Wherein, n is a positive integer.

[0064] Optionally, the dimension information of the multi-stage seam core may include but is not limited to the length and width of each stage core, and the window width and window height of the stage core, etc., which are not limited here.

[0065] In an optional embodiment, the computer device may construct the n-layer multi-stage seamed core model and the transformer core multi-stage model in the same coordinate system. That is, after constructing the transformer core multi-stage model in one coordinate system, the computer device may construct the n-layer multi-stage seamed core model in the same coordinate system based on the dimensional information of the multi-stage seamed core.

[0066] S203 , using the n-layer multi-stage joint core model to replace the corresponding region in the transformer core multi-stage model, to obtain the replaced transformer core multi-stage model.

[0067] S204: Determine the eddy current loss result corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement.

[0068] The position of the n-layer laminated core is the same as that of the n-layer multi-stage seam core model.

[0069] S205 , repeatedly executing the step of constructing an n-layer multi-stage seamed core model based on the size of the multi-stage seamed core until all regions in the transformer core multi-stage model are replaced, and obtaining eddy current loss results corresponding to multiple n-layer laminated cores.

[0070] That is, after executing step S204, the computer device may repeatedly execute steps S202 to S204 until all regions in the transformer core multi-level model are replaced, and eddy current loss results corresponding to multiple n-layer laminated cores are obtained.

[0071] S206 : Determine the eddy current loss result of the transformer core based on the eddy current loss results corresponding to the multiple n-layer laminated cores.

[0072] In an optional embodiment, the computer device determines the eddy current loss result of the transformer core based on the eddy current loss results corresponding to multiple n-layer laminated cores, which may include: adding the eddy current loss results corresponding to the multiple n-layer laminated cores to obtain the eddy current loss result of the transformer core.

[0073] In an embodiment of the present application, a computer device can construct a multi-level model of a transformer core; construct an n-layer multi-level seam core model based on the size information of the multi-level seam core; n is a positive integer; use the n-layer multi-level seam core model to replace the corresponding area in the transformer core multi-level model to obtain the replaced transformer core multi-level model; determine the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-level model; the position of the n-layer laminated core is the same as the position of the n-layer multi-level seam core model; repeat the steps of constructing the n-layer multi-level seam core model based on the size of the multi-level seam core until all areas in the transformer core multi-level model are replaced, and obtain the eddy current loss results corresponding to multiple n-layer laminated cores; determine the eddy current loss result of the transformer core based on the eddy current loss results corresponding to the multiple n-layer laminated cores. Using this method, a computer device sequentially replaces corresponding areas in a transformer multi-level model with an n-layer multi-level seam core model, and calculates the flow loss of the n-layer laminated core included in the area in the replaced transformer core multi-level model. In this way, the eddy current can be confined to a smaller area, thereby accurately determining the eddy current loss corresponding to each n-layer laminated core. Furthermore, based on the eddy current loss results corresponding to multiple n-layer laminated cores, the eddy current loss results of the transformer core can be accurately determined.

[0074] See Figure 3 , Figure 3 This is a flow chart of another method for determining the eddy current loss of the transformer core provided by an embodiment of the present application. Figure 2 Compared with the method of determining transformer core eddy current losses shown, Figure 3 The method shown specifically describes how the computer device constructs a multi-level model of the transformer core and how to determine the eddy current loss results corresponding to the n-layer laminated core in the multi-level model of the transformer core after replacement. Figure 3 As shown, the method for determining the eddy current loss of the transformer core may include but is not limited to the following steps:

[0075] S301: Based on the size information of each stage of the transformer core, a model corresponding to each stage of the transformer core is constructed.

[0076] The size information includes the length and width of the core at this level and the window width and window height of the core at this level.

[0077] For example, see Figure 4 , Figure 4 This is a schematic diagram of the overall geometric structure of a transformer core multi-level model provided in an embodiment of the present application. Figure 4 As shown, parts numbered 4, 5, and 6 represent the primary core respectively.

[0078] S302: superimpose the models corresponding to each level of the core to obtain a multi-level model of the transformer core.

[0079] join Figure 4 , Figure 4 It is a multi-level model of the transformer core obtained by superimposing the models corresponding to each level of the core using computer equipment.

[0080] S303: Construct an n-layer multi-stage seamed core model based on the size information of the multi-stage seamed core.

[0081] Wherein, n is a positive integer.

[0082] See Figure 5 , Figure 5 This is a partially enlarged schematic diagram of a multi-stage joint core model provided in an embodiment of the present application. Figure 5 As shown, serial number 1 represents a multi-stage core; serial number 2 represents a multi-stage joint core; and serial number 3 represents a winding.

[0083] S304 , using the n-layer multi-stage joint core model to replace the corresponding region in the transformer core multi-stage model, to obtain the replaced transformer core multi-stage model.

[0084] S305. Add material properties to the core, winding, and shell of the replaced transformer core multi-stage model.

[0085] In an optional implementation, the material property value may be obtained by a computer device from a material library; or it may be customized, which is not limited here.

[0086] Since different materials have different physical properties, setting the correct material properties ensures that the simulation model can accurately describe the behavior of these materials under specific conditions, thereby ensuring the accuracy of the simulation results.

[0087] In an optional embodiment, the computer device adds material attributes to the core, windings, and casing of the replaced transformer core multi-stage model. This may include adding silicon steel sheet material attributes to the core, pure copper material attributes to the windings, and steel material attributes to the casing. In other words, the computer device may assign silicon steel sheet material to the core, pure copper material to the windings, and steel material to the casing of the replaced transformer core multi-stage model.

[0088] Optionally, the silicon steel sheet material may be a silicon steel sheet material with a BH curve; the steel material may be Q235 steel material.

[0089] Optionally, the computer device may also assign air material to the remaining solution domain in the replaced transformer core multi-level model.

[0090] S306: Draw a mesh corresponding to the replaced transformer core multi-level model.

[0091] S307 , determining solver parameters, and based on the solver parameters, boundary conditions, and mesh, determining eddy current loss results corresponding to the n-layer laminated core in the replaced transformer core multi-level model.

[0092] In an optional implementation, the boundary conditions may include at least one of the following: the current of the winding is the rated current; and the loss calculation node of the core is a preset loss calculation node.

[0093] In this embodiment, before step S307 , the computer device may further determine the rated current corresponding to the winding, and determine the loss calculation node corresponding to the core.

[0094] In an optional embodiment, the parameters of the solver may include: the frequency of the solver is 50 Hertz (Hz).

[0095] S308. Repeat the steps of constructing an n-layer multi-stage seamed core model based on the size of the multi-stage seamed core until all regions in the transformer core multi-stage model are replaced, and eddy current loss results corresponding to multiple n-layer laminated cores are obtained.

[0096] That is, after executing step S307, the computer device repeatedly executes steps S303 to S307 until all regions in the transformer core multi-level model are replaced, and eddy current loss results corresponding to multiple n-layer laminated cores are obtained.

[0097] S309 : Determine the eddy current loss result of the transformer core based on the eddy current loss results corresponding to the multiple n-layer laminated cores.

[0098] In an optional embodiment, the computer device determines the eddy current loss result of the transformer core based on the eddy current loss results corresponding to multiple n-layer laminated cores, which may include: adding the eddy current loss results corresponding to the multiple n-layer laminated cores to obtain the eddy current loss result of the transformer core.

[0099] In an embodiment of the present application, a computer device can construct a model corresponding to each level of the transformer core based on the size information of each level of the transformer core; superimpose the models corresponding to each level of the core to obtain a multi-level model of the transformer core; construct an n-layer multi-level seam core model based on the size information of the multi-level seam core; use the n-layer multi-level seam core model to replace the corresponding area in the transformer core multi-level model to obtain the replaced transformer core multi-level model; add material properties to the core, winding and shell in the replaced transformer core multi-level model respectively; draw the mesh corresponding to the replaced transformer core multi-level model; determine the parameters of the solver, and determine the eddy current loss results corresponding to the n-layer laminated core in the replaced transformer core multi-level model based on the parameters, boundary conditions and mesh of the solver; repeat the steps of constructing the n-layer multi-level seam core model based on the size of the multi-level seam core until all areas in the transformer core multi-level model are replaced, and the eddy current loss results corresponding to multiple n-layer laminated cores are obtained; and determine the eddy current loss results of the transformer core based on the eddy current loss results corresponding to the multiple n-layer laminated cores. Using this method, a computer device sequentially replaces corresponding areas in a transformer multi-level model with an n-layer multi-level seam core model, and calculates the flow loss of the n-layer laminated core included in the area in the replaced transformer core multi-level model. In this way, the eddy current can be confined to a smaller area, thereby accurately determining the eddy current loss corresponding to each n-layer laminated core. Furthermore, based on the eddy current loss results corresponding to multiple n-layer laminated cores, the eddy current loss results of the transformer core can be accurately determined.

[0100] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0101] Based on the same inventive concept, an embodiment of the present application further provides a device for determining transformer core eddy current loss, which is used to implement the aforementioned method for determining transformer core eddy current loss. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more embodiments of the device for determining transformer core eddy current loss provided below can be found in the aforementioned method for determining transformer core eddy current loss, and will not be further elaborated here.

[0102] See Figure 6 , Figure 6 Schematic diagram of a device for determining eddy current loss in a transformer core provided by an embodiment of the present application. Figure 6 As shown, the device for determining the eddy current loss of the transformer core may include but is not limited to:

[0103] Construction module 601, used to construct a multi-level model of the transformer core;

[0104] The construction module 601 is further used to construct an n-layer multi-level seam core model based on the size information of the multi-level seam core, where n is a positive integer;

[0105] Processing module 602, configured to replace a corresponding region in the transformer core multi-level model with the n-layer multi-level seam core model to obtain a replaced transformer core multi-level model;

[0106] Determination module 603, for determining the eddy current loss result corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement; the position of the n-layer laminated core is the same as the position of the n-layer multi-stage seam core model;

[0107] Processing module 602 is configured to repeatedly execute the step of constructing an n-layer multi-stage seamed core model based on the dimensions of the multi-stage seamed core until all regions in the transformer core multi-stage model are replaced, thereby obtaining eddy current loss results corresponding to the n-layer laminated cores.

[0108] The determination module 603 is further configured to determine the eddy current loss result of the transformer core based on the eddy current loss results corresponding to the plurality of n-layer laminated cores.

[0109] In one embodiment, when the construction module 601 is used to construct a multi-stage model of a transformer core, it is specifically used to: construct a model corresponding to each stage of the transformer core based on the size information of each stage of the transformer core; the size information includes the length and width of the core at this stage and the window width and window height of the core at this stage; the models corresponding to each stage of the core are superimposed to obtain a multi-stage model of the transformer core.

[0110] In one embodiment, when the determination module 603 is used to determine the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model, it is specifically used to: add material properties to the core, winding and shell in the replaced transformer core multi-stage model; draw the mesh corresponding to the replaced transformer core multi-stage model; determine the parameters of the solver, and determine the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model based on the parameters, boundary conditions and mesh of the solver.

[0111] In one embodiment, when the determination module 603 is used to add material attributes to the core, winding and casing in the replaced transformer core multi-level model, it is specifically used to: add silicon steel sheet material attributes to the core, add pure copper material attributes to the winding, and add steel material attributes to the casing in the replaced transformer core multi-level model.

[0112] In one embodiment, the boundary conditions include at least one of the following: the current of the winding is the rated current; and the loss calculation node of the core is a preset loss calculation node.

[0113] In one embodiment, the determination module 603 is further configured to determine the rated current corresponding to the winding; and determine a preset loss calculation node corresponding to the core.

[0114] Each module in the apparatus for determining transformer core eddy current loss can be implemented in whole or in part via software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a terminal device in hardware form, or can be stored in a memory in the terminal device in software form, so that the processor can call and execute the corresponding operations of each module.

[0115] In an exemplary embodiment, the present application provides a computer device, which may be a terminal device, and its internal structure diagram may be as follows: Figure 7As shown. The computer device includes a processor, memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals via wired or wireless means, and the wireless means can be implemented via Wi-Fi, a mobile cellular network, near-field communication (NFC), or other technologies. When executed by the processor, the computer program implements a method for determining eddy current loss in a transformer core. The display unit of the computer device is used to form a visually visible image, and can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device casing, or an external keyboard, touchpad or mouse.

[0116] Those skilled in the art will understand that Figure 7 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0117] In an exemplary embodiment, the present application provides a computer device including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0118] Construct a multi-level model of the transformer core;

[0119] Based on the size information of the multi-level joint core, an n-layer multi-level joint core model is constructed; n is a positive integer;

[0120] The corresponding region in the transformer core multi-level model is replaced by the n-layer multi-level joint core model to obtain the replaced transformer core multi-level model;

[0121] Determine the eddy current loss results corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement; the position of the n-layer laminated core is the same as that of the n-layer multi-stage seam core model;

[0122] Repeat the steps of constructing an n-layer multi-stage seamed core model based on the size of the multi-stage seamed core until all regions in the transformer core multi-stage model are replaced, and obtain eddy current loss results corresponding to multiple n-layer laminated cores;

[0123] Based on the eddy current loss results corresponding to the multiple n-layer laminated cores, the eddy current loss results of the transformer core are determined.

[0124] In one embodiment, when a processor executes a computer program to implement construction of a multi-stage model of a transformer core, the following steps are specifically implemented: based on the dimension information of each stage of the transformer core, a model corresponding to each stage of the transformer core is constructed; the dimension information includes the length and width of the core at that stage and the window width and window height of the core at that stage; the models corresponding to each stage of the core are superimposed to obtain a multi-stage model of the transformer core.

[0125] In one embodiment, when a processor executes a computer program to determine an eddy current loss result corresponding to an n-layer laminated core in a replaced transformer core multi-stage model, the processor specifically implements the following steps: adding material properties to the core, winding, and casing in the replaced transformer core multi-stage model; drawing a mesh corresponding to the replaced transformer core multi-stage model; determining solver parameters, and determining the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model based on the solver parameters, boundary conditions, and mesh.

[0126] In one embodiment, when the processor executes a computer program to respectively add material attributes to the core, winding, and casing in the replaced transformer core multi-stage model, the following steps are specifically implemented: adding silicon steel sheet material attributes to the core, adding pure copper material attributes to the winding, and adding steel material attributes to the casing in the replaced transformer core multi-stage model.

[0127] In one embodiment, the boundary conditions include at least one of the following: the current of the winding is the rated current; and the loss calculation node of the core is a preset loss calculation node.

[0128] In one embodiment, the processor executes the computer program to further implement the following steps: determining the rated current corresponding to the winding; and determining a preset loss calculation node corresponding to the core.

[0129] In an exemplary embodiment, the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the following steps are implemented:

[0130] Construct a multi-level model of the transformer core;

[0131] Based on the size information of the multi-level joint core, an n-layer multi-level joint core model is constructed; n is a positive integer;

[0132] The corresponding region in the transformer core multi-level model is replaced by the n-layer multi-level joint core model to obtain the replaced transformer core multi-level model;

[0133] Determine the eddy current loss results corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement; the position of the n-layer laminated core is the same as that of the n-layer multi-stage seam core model;

[0134] Repeat the steps of constructing an n-layer multi-stage seamed core model based on the size of the multi-stage seamed core until all regions in the transformer core multi-stage model are replaced, and obtain eddy current loss results corresponding to multiple n-layer laminated cores;

[0135] Based on the eddy current loss results corresponding to the multiple n-layer laminated cores, the eddy current loss results of the transformer core are determined.

[0136] In one embodiment, when a computer program is executed by a processor to implement construction of a multi-stage model of a transformer core, the following steps are specifically implemented: based on the dimension information of each stage of the transformer core, a model corresponding to each stage of the transformer core is constructed; the dimension information includes the length and width of the core at that stage and the window width and window height of the core at that stage; the models corresponding to each stage of the core are superimposed to obtain a multi-stage model of the transformer core.

[0137] In one embodiment, when a computer program is executed by a processor to determine the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model, the computer program specifically implements the following steps: adding material properties to the core, winding, and casing in the replaced transformer core multi-stage model; drawing a mesh corresponding to the replaced transformer core multi-stage model; determining solver parameters, and determining the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model based on the solver parameters, boundary conditions, and mesh.

[0138] In one embodiment, when a computer program is executed by a processor to implement adding material attributes to the core, windings, and casing in a replaced transformer core multi-stage model, the following steps are specifically implemented: adding silicon steel sheet material attributes to the core, adding pure copper material attributes to the windings, and adding steel material attributes to the casing in the replaced transformer core multi-stage model.

[0139] In one embodiment, the boundary conditions include at least one of the following: the current of the winding is the rated current; and the loss calculation node of the core is a preset loss calculation node.

[0140] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining the rated current corresponding to the winding; and determining a preset loss calculation node corresponding to the core.

[0141] In an exemplary embodiment, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the following steps:

[0142] Construct a multi-level model of the transformer core;

[0143] Based on the size information of the multi-level joint core, an n-layer multi-level joint core model is constructed; n is a positive integer;

[0144] The corresponding region in the transformer core multi-level model is replaced by the n-layer multi-level joint core model to obtain the replaced transformer core multi-level model;

[0145] Determine the eddy current loss results corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement; the position of the n-layer laminated core is the same as that of the n-layer multi-stage seam core model;

[0146] Repeat the steps of constructing an n-layer multi-stage seamed core model based on the size of the multi-stage seamed core until all regions in the transformer core multi-stage model are replaced, and obtain eddy current loss results corresponding to multiple n-layer laminated cores;

[0147] Based on the eddy current loss results corresponding to the multiple n-layer laminated cores, the eddy current loss results of the transformer core are determined.

[0148] In one embodiment, when a computer program is executed by a processor to implement construction of a multi-stage model of a transformer core, the following steps are specifically implemented: based on the dimension information of each stage of the transformer core, a model corresponding to each stage of the transformer core is constructed; the dimension information includes the length and width of the core at that stage and the window width and window height of the core at that stage; the models corresponding to each stage of the core are superimposed to obtain a multi-stage model of the transformer core.

[0149] In one embodiment, when a computer program is executed by a processor to determine the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model, the computer program specifically implements the following steps: adding material properties to the core, winding, and casing in the replaced transformer core multi-stage model; drawing a mesh corresponding to the replaced transformer core multi-stage model; determining solver parameters, and determining the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model based on the solver parameters, boundary conditions, and mesh.

[0150] In one embodiment, when a computer program is executed by a processor to implement adding material attributes to the core, windings, and casing in a replaced transformer core multi-stage model, the following steps are specifically implemented: adding silicon steel sheet material attributes to the core, adding pure copper material attributes to the windings, and adding steel material attributes to the casing in the replaced transformer core multi-stage model.

[0151] In one embodiment, the boundary conditions include at least one of the following: the current of the winding is the rated current; and the loss calculation node of the core is a preset loss calculation node.

[0152] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining the rated current corresponding to the winding; and determining a preset loss calculation node corresponding to the core.

[0153] It should be noted that the data involved in this application (including but not limited to the size information of each level of the transformer core, the size information of the multi-level joint core, etc.) are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0154] Those skilled in the art will understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. In particular, any reference to memory, database, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), quantum computing-based data processing logic devices, artificial intelligence (AI) processors, and the like.

[0155] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0156] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A method for determining eddy current loss in transformer core, characterized in that: The method comprises: Based on the dimension information of each stage of the transformer core, a model corresponding to each stage of the transformer core is constructed; the dimension information includes the length and width of the core of the stage and the window width and window height of the core of the stage; Superimposing the models corresponding to each stage of the core to obtain a multi-stage model of the transformer core; Based on the size information of the multi-stage seam core, an n-layer multi-stage seam core model is constructed, wherein n is a positive integer; Replacing the corresponding region in the transformer core multi-stage model with the n-layer multi-stage seam core model to obtain a replaced transformer core multi-stage model; Adding material properties to the core, winding and shell of the replaced transformer core multi-level model respectively; Drawing a grid corresponding to the replaced transformer core multi-level model; Determining solver parameters, and determining eddy current loss results corresponding to an n-layer laminated core in the replaced transformer core multi-stage model based on the solver parameters, boundary conditions, and the grid; wherein the position of the n-layer laminated core is the same as the position of the n-layer multi-stage seamed core model; Repeating the steps of constructing an n-layer multi-stage seamed core model based on the dimension information of the multi-stage seamed core until all regions in the transformer core multi-stage model are replaced, and obtaining eddy current loss results corresponding to a plurality of the n-layer laminated cores; Based on the eddy current loss results corresponding to the plurality of n-layer laminated cores, the eddy current loss result of the transformer core is determined.

2. The method according to claim 1, characterized in that Adding material properties to the core, winding, and shell of the replaced transformer core multi-level model respectively includes: In the replaced transformer core multi-stage model, silicon steel sheet material attributes are added to the core, pure copper material attributes are added to the winding, and steel material attributes are added to the shell.

3. The method according to claim 1, characterized in that The boundary conditions include at least one of the following: The current of the winding is the rated current; The loss calculation node of the core is a preset loss calculation node.

4. The method according to claim 3, characterized in that The method further comprises: determining the rated current corresponding to the winding; Determine a preset loss calculation node corresponding to the core.

5. The method according to any one of claims 1 to 4, characterized in that Determining the eddy current loss result of the transformer core based on the eddy current loss results corresponding to the plurality of n-layer laminated cores includes: The eddy current loss results corresponding to the plurality of n-layer laminated cores are added together to obtain the eddy current loss result of the transformer core.

6. A device for determining eddy current loss in transformer core, characterized in that: The device comprises: A construction module is configured to construct a model corresponding to each stage of the transformer core based on the dimension information of each stage of the transformer core, wherein the dimension information includes the length and width of the core at that stage and the window width and window height of the core at that stage; and to superimpose the models corresponding to each stage of the core to obtain a multi-stage model of the transformer core; The construction module is further used to construct an n-layer multi-level seam core model based on the size information of the multi-level seam core, wherein n is a positive integer; a processing module, configured to replace a corresponding region in the transformer core multistage model with the n-layer multistage seam core model to obtain a replaced transformer core multistage model; A determination module is configured to add material properties to the core, winding, and casing of the replaced transformer core multi-stage model; draw a mesh corresponding to the replaced transformer core multi-stage model; determine solver parameters, and based on the solver parameters, boundary conditions, and mesh, determine eddy current loss results corresponding to an n-layer laminated core in the replaced transformer core multi-stage model; the position of the n-layer laminated core is the same as the position of the n-layer multi-stage seam core model; The processing module is configured to repeatedly execute the step of constructing an n-layer multi-stage seamed core model based on the dimensional information of the multi-stage seamed core until all regions of the transformer core multi-stage model are replaced, thereby obtaining eddy current loss results corresponding to the n-layer laminated cores; The determination module is further configured to determine the eddy current loss result of the transformer core based on the eddy current loss results corresponding to the plurality of n-layer laminated cores.

7. The device according to claim 6, characterized in that When the determination module is used to add material attributes to the core, winding, and shell in the replaced transformer core multi-level model, the determination module is specifically used to: For the replaced transformer core multi-level model, add silicon steel sheet material properties to the core, pure copper material properties to the winding, and steel material properties to the casing.

8. A computer device, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the method according to any one of claims 1 to 5 when executing the computer program.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

10. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

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