Method and system for measuring winding loss of inductor

Abstract

The invention relates to the technical field of winding loss measurement, and discloses an inductor winding loss measurement method and system, and the method comprises the steps: carrying out the partitioning processing of an inductor winding, obtaining a partitioned winding, and setting an initial filling factor of the partitioned winding; after excitation current is input into the inductance winding, factor related parameters of the partition winding are measured through a factor detection tool, and winding related parameters of the partition winding are measured through a winding detection tool; based on the factor related parameters, analyzing a single deformation area of a single wire in the inductance winding, performing wire accumulation processing on the single deformation area, and converting an initial filling factor into a dynamic filling factor through a single area deformation area; and analyzing the initial eddy-current loss of the partitioned winding, performing loss dynamic adjustment on the initial eddy-current loss by using the dynamic fill factor to obtain dynamic eddy-current loss, and determining the final eddy-current loss of the inductance winding through the dynamic eddy-current loss. According to the invention, both measurement accuracy and measurement convenience can be considered.

Description

Technical Field

[0001] The invention relates to a method and a system for measuring the winding loss of an inductor, and belongs to the technical field of winding loss measurement. Background Art

[0002] Nowadays, routers are network hardware that is responsible for the network layer in the OSI reference model and forwards IP packets between different networks according to the routing table. The network here mainly refers to the IP subnet. During the routing transmission process, the source IP address and the destination IP address will not change, only the MAC address will change. The next router to be forwarded is found through the next-hop MAC address. The MAC address is a physical address working at the data link layer.

[0003] The accurate calculation of eddy current loss depends on the coupling between high-frequency electromagnetic field and conductor, but its distribution is affected by the winding geometry, material properties and proximity effect. Traditional analytical methods, such as Dowell's formula, are only applicable to simple regular structures. It is difficult to accurately model the nonlinear effects of complex windings, such as non-uniform inter-turn gaps and wire deformation. Furthermore, existing simulation technologies generally use the whole pancake model, but the whole pancake model is only applicable to windings with uniform multi-turn structures, and only sets a specific filling factor, which cannot reflect the actual inter-turn distance, resulting in errors in the actual calculation of eddy current loss. Finally, if layer-by-layer modeling or grid decomposition is used to improve the accuracy of winding modeling, it is necessary to establish a complex mathematical model and define material properties, boundary conditions and contact relationships layer by layer in the finite element software. Therefore, the measurement of eddy current loss cannot take into account both measurement accuracy and measurement simplicity. Summary of the invention

[0004] The present invention provides a method and system for measuring the winding loss of an inductor, the main purpose of which is to take into account both measurement accuracy and measurement simplicity.

[0005] To achieve the above object, the present invention provides a method for measuring the winding loss of an inductor, comprising: Partitioning the inductor winding to obtain partitioned windings, setting an initial filling factor of the partitioned windings, configuring a factor detection tool corresponding to the filling factor, and configuring a winding detection tool for the partitioned windings; After inputting the excitation current into the inductor winding, the factor-related parameters of the partition winding are measured by the factor detection tool, and the winding-related parameters of the partition winding are measured by the winding detection tool; Based on the factor-related parameters, a single deformation area of ​​a single wire in the inductor winding is analyzed, and according to the factor-related parameters, a wire accumulation process is performed on the single deformation area to obtain a single-zone deformation area of ​​the partitioned winding, and the initial filling factor is converted into a dynamic filling factor through the single-zone deformation area; Based on the winding-related parameters, analyzing the initial eddy current loss of the partition winding, dynamically adjusting the initial eddy current loss using the dynamic filling factor to obtain a dynamic eddy current loss, and determining the final eddy current loss of the inductor winding using the dynamic eddy current loss; The final eddy current loss is used as the loss measurement result of the inductor winding.

[0006] Optionally, partitioning the inductor winding to obtain the partitioned winding includes: Querying the conductivity and frequency response characteristics of the wire on the inductor winding; When the conductivity and the frequency response characteristics are the same, the conductive wires on the inductor winding are divided into the same layer of conductive wires; The partition windings are determined using the same layer of wires.

[0007] Optionally, setting the initial filling factor of the partition winding includes: Obtaining the initial area, layer height, slot width and number of conductors of a single zone of the partitioned winding; The initial filling factor of the partition winding is calculated according to the initial area of ​​the single zone, the layer height, the slot width and the number of wires.

[0008] Optionally, analyzing a single deformation area of ​​a single wire in the inductor winding based on the factor-related parameters includes: Obtaining diameter, winding tension, elastic modulus and Poisson's ratio from the factor-related parameters; According to the diameter, the winding tension, the elastic modulus and the Poisson's ratio, Calculating the short axis value of the single wire; Calculating the long axis value of the single wire according to the diameter, the winding tension and the elastic modulus; The single deformation area of ​​a single wire in the inductor winding is calculated by the short axis value and the long axis value.

[0009] Optionally, performing wire accumulation processing on the single deformation area according to the factor-related parameters to obtain the single-zone deformation area of ​​the partitioned winding includes: Obtaining diameter, winding tension, elastic modulus and Poisson's ratio from the factor-related parameters; Obtaining the short axis value and the long axis value corresponding to the single deformation area; Performing short-axis compression on the short-axis value to obtain a compressed short-axis; The single-zone deformation area of ​​the partitioned winding is determined by using the compression minor axis and the major axis values.

[0010] Optionally, converting the initial filling factor into a dynamic filling factor by using the deformation area of ​​the single zone includes: Obtaining the layer height corresponding to the deformation area of ​​the single zone; Determine the contour volume of the partition winding by using the layer height and the slot width of the partition winding; Determine the actual volume of the partition winding using the deformation area of ​​the single zone and the number of wires of the partition winding; The ratio of the actual volume to the contour volume is taken as a dynamic filling factor.

[0011] Optionally, analyzing the initial eddy current loss of the partition winding based on the winding-related parameters includes: Obtaining the current frequency, material conductivity and magnetic induction intensity among the winding related parameters; Obtaining the layer height and the number of wires of the partition winding; The initial eddy current loss of the partition winding is analyzed based on the current frequency, the material conductivity, the magnetic induction intensity, the layer height and the number of wires.

[0012] Optionally, dynamically adjusting the initial eddy current loss by using the dynamic filling factor to obtain dynamic eddy current loss includes: determining an adjustment index of the dynamic fill factor; Based on the adjustment index and the dynamic filling factor, the initial eddy current loss is dynamically adjusted to obtain a dynamic eddy current loss.

[0013] Optionally, determining the final eddy current loss of the inductor winding by using the dynamic eddy current loss includes: The dynamic eddy current loss of each layer in the dynamic eddy current loss is integrated into the final eddy current loss of the inductor winding.

[0014] In order to solve the above problems, the present invention further provides a winding loss measurement system for an inductor, the system comprising: A tool configuration module, used to partition the inductor winding to obtain a partitioned winding, set an initial filling factor of the partitioned winding, configure a factor detection tool corresponding to the filling factor, and configure a winding detection tool for the partitioned winding; A parameter measurement module, used for measuring the factor-related parameters of the partition winding using the factor detection tool after inputting the excitation current into the inductor winding, and measuring the winding-related parameters of the partition winding using the winding detection tool; A factor conversion module, configured to analyze a single deformation area of ​​a single wire in the inductor winding based on the factor-related parameters, perform wire accumulation processing on the single deformation area according to the factor-related parameters, obtain a single-zone deformation area of ​​the partitioned winding, and convert the initial filling factor into a dynamic filling factor through the single-zone deformation area; A loss determination module, configured to analyze the initial eddy current loss of the partition winding based on the winding related parameters, dynamically adjust the initial eddy current loss using the dynamic filling factor to obtain a dynamic eddy current loss, and determine the final eddy current loss of the inductor winding using the dynamic eddy current loss; The loss measurement module is used to use the final eddy current loss as the loss measurement result of the inductor winding.

[0015] Compared with the problem described in the background technology, the embodiment of the present invention partitions the inductor winding to divide the wires with the same conductivity and frequency response characteristics in the inductor winding into the same layer of wires, thereby realizing layered processing of the wires of the inductor winding, thereby paving the way for setting different filling factors for each layer later. Furthermore, the embodiment of the present invention sets the initial filling factor of the partitioned winding to calculate the initial filling factor of the partitioned winding based on the layout of the wires at the initial time. The embodiment of the present invention analyzes the single deformation area of ​​a single wire in the inductor winding based on the factor-related parameters to calculate the cross-sectional area of ​​the wire at the initial time. Furthermore, the embodiment of the present invention performs wire accumulation processing on the single deformation area according to the factor-related parameters to calculate the wire under the influence of the input excitation current. , the elastic deformation caused by the cross-sectional area, further, the embodiment of the present invention converts the initial filling factor into a dynamic filling factor through the single-zone deformation area, so as to dynamically adjust the filling factor of each layer of wire in the winding based on the elastic deformation of the wire when the current is passing, thereby improving the accuracy of the subsequent correction of eddy current loss using the dynamic filling factor, the embodiment of the present invention analyzes the initial eddy current loss of the partitioned winding based on the winding-related parameters, so as to calculate the eddy current loss of the partitioned winding using the conventional Dowell model, further, the embodiment of the present invention dynamically adjusts the initial eddy current loss by using the dynamic filling factor, so as to eliminate the process of finite element simulation of the winding, and directly calculates the accurate eddy current loss by the dynamic filling factor, thereby improving the simplicity of eddy current loss measurement. Therefore, the winding loss measurement method and system of the inductor provided in the embodiment of the present invention can take into account both measurement accuracy and measurement simplicity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a flow chart of a method for measuring winding loss of an inductor provided in one embodiment of the present invention; Figure 2A schematic diagram of a module of a winding loss measurement system for an inductor provided in an embodiment of the present invention.

[0017] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0018] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0019] The embodiment of the present application provides a method for measuring the winding loss of an inductor. The execution subject of the winding loss measurement method of the inductor includes but is not limited to at least one of the electronic devices such as a server and a terminal that can be configured to execute the method provided by the embodiment of the present application. In other words, the winding loss measurement method of the inductor can be executed by software or hardware installed in a terminal device or a server device. The server includes but is not limited to: a single server, a server cluster, a cloud server or a cloud server cluster, etc.

[0020] Embodiment 1: Reference Figure 1 FIG. 1 is a flow chart of a method for measuring the winding loss of an inductor provided in an embodiment of the present invention. In this embodiment, the method for measuring the winding loss of an inductor includes: S1. Partition the inductor winding to obtain partitioned windings, set an initial filling factor of the partitioned windings, configure a factor detection tool corresponding to the filling factor, and configure a winding detection tool for the partitioned windings.

[0021] In the embodiment of the present invention, the inductor winding refers to the winding inductance which is the basic component of the inductor, and is composed of a conductor coil wound on a magnetic core. The winding can be single-layer or multi-layer winding. The embodiment of the present invention only considers multi-layer winding.

[0022] Furthermore, the embodiment of the present invention partitions the inductor winding so as to divide the wires with the same conductivity and frequency response characteristics in the inductor winding into the same layer of wires, thereby realizing layered processing of the wires of the inductor winding, thereby paving the way for subsequently setting different filling factors for each layer.

[0023] The partitioned winding refers to a winding in which the conductor is divided into multiple layers.

[0024] In one embodiment of the present invention, the partitioning of the inductor winding to obtain the partitioned winding includes: querying the conductivity and frequency response characteristics of the wires on the inductor winding; when the conductivity and the frequency response characteristics are the same, dividing the wires on the inductor winding into the same layer of wires; and determining the partitioned winding using the wires on the same layer.

[0025] The frequency response characteristics refer to the response characteristics of the conductor to currents of different frequencies, mainly including gain and phase delay.

[0026] Furthermore, the embodiment of the present invention sets the initial filling factor of the partition winding so as to calculate the initial filling factor of the partition winding based on the layout of the wires at the initial time.

[0027] In one embodiment of the present invention, the setting of the initial filling factor of the partitioned winding includes: obtaining the initial area of ​​a single zone, the layer height, the slot width and the number of wires of the partitioned winding; and calculating the initial filling factor of the partitioned winding using the following formula according to the initial area of ​​the single zone, the layer height, the slot width and the number of wires: ; in, represents the initial filling factor, Indicates Layer height of layer conductors, Indicates the slot width, represents the initial area of ​​a single zone, Indicates The number of wires in the layer.

[0028] The single-zone initial area refers to the cross-sectional area of ​​each layer of wire in the partitioned winding, and the slot width refers to the width of the slot accommodating the winding in a direction perpendicular to the winding axis.

[0029] Furthermore, in an embodiment of the present invention, the factor detection tool refers to a plurality of tools for detecting the diameter, winding tension, elastic modulus and Poisson's ratio of an inductor winding, for example, the diameter detection tool is a ruler, the winding tension detection tool is a tension detector, etc. The winding tension refers to the pulling force of the winder on the winding during the winding process, the elastic modulus refers to the stress under a unidirectional stress state divided by the strain in that direction, and the Poisson's ratio refers to the ratio of the transverse normal strain to the axial normal strain when the material is subjected to unidirectional tension or compression. Furthermore, the winding detection tool refers to a tool for measuring the current frequency, material conductivity and magnetic induction intensity of the inductor winding, wherein the material conductivity refers to the ability of the wire material to conduct current, and the magnetic induction intensity refers to a physical quantity that describes the strength and direction of the magnetic field.

[0030] S2. After inputting the excitation current into the inductor winding, using the factor detection tool to measure the factor-related parameters of the partition winding, and using the winding detection tool to measure the winding-related parameters of the partition winding.

[0031] In the embodiment of the present invention, the excitation current refers to a current signal applied to the inductor winding to excite the inductor winding to work.

[0032] S3. Based on the factor-related parameters, analyze the single deformation area of ​​a single wire in the inductor winding, perform wire accumulation processing on the single deformation area according to the factor-related parameters to obtain the single-zone deformation area of ​​the partitioned winding, and convert the initial filling factor into a dynamic filling factor through the single-zone deformation area.

[0033] The embodiment of the present invention analyzes the deformation area of ​​a single wire in the inductor winding based on the factor-related parameters to calculate the initial cross-sectional area of ​​the wire.

[0034] The single deformation area refers to the cross-sectional area of ​​a single wire.

[0035] In one embodiment of the present invention, the analysis of the deformation area of ​​a single wire in the inductor winding based on the factor-related parameters includes: obtaining the diameter, winding tension, elastic modulus and Poisson's ratio from the factor-related parameters; and calculating the short axis value of the single wire according to the diameter, the winding tension, the elastic modulus and the Poisson's ratio using the following formula: ; in, Indicates the inductor winding The initial short axis value of the layer wire, Indicates The initial diameter of the layer wire, Indicates The winding tension of the layer conductor, Indicates The elastic modulus of the layer conductor, Indicates Poisson's ratio of the layer conductor; According to the diameter, the winding tension and the elastic modulus, the long axis value of the single wire is calculated using the following formula: ; in, Indicates the inductor winding The initial long axis value of the layer wire, Indicates The initial diameter of the layer wire, Indicates The winding tension of the layer conductor, Indicates Elastic modulus of the layer conductor; The single deformation area of ​​a single wire in the inductor winding is calculated by the short axis value and the long axis value.

[0036] The minor axis value and the major axis value refer to the minor axis and the major axis of the ellipse surrounded by the wires. Therefore, the single deformation area refers to the value obtained by calculating the area of ​​the ellipse using the minor axis and the major axis.

[0037] Furthermore, the embodiment of the present invention performs wire accumulation processing on the single deformation area according to the factor-related parameters to calculate the influence of the elastic deformation of the wire under the influence of the input excitation current on the cross-sectional area.

[0038] The single-zone deformation area refers to the cross-sectional area of ​​each layer of the winding.

[0039] In one embodiment of the present invention, the single deformation area is subjected to wire accumulation processing according to the factor-related parameters to obtain the single-zone deformation area of ​​the partitioned winding, including: obtaining the diameter, winding tension, elastic modulus and Poisson's ratio from the factor-related parameters; obtaining the short axis value and the long axis value corresponding to the single deformation area; and performing short axis compression on the short axis value using the following formula to obtain the compressed short axis: ; ; in, represents the compressed minor axis, Indicates the inductor winding The initial short axis value of the layer wire, Indicates The density of the layer wires, Indicates The layer height of the layer conductor, represents the acceleration due to gravity, Indicates that the external The pressure on the layer conductor, Indicates external pressure and The contact area between the layer conductors, represents the nonlinear compression coefficient, represents the total external pressure, Indicates The elastic modulus of the layer conductor in the period after the initial period, Indicates Yield strength of layer conductors; The single-zone deformation area of ​​the partitioned winding is determined by using the compression minor axis and the major axis values.

[0040] Optionally, determining the single-zone deformation area of ​​the partitioned winding using the compressed minor axis and the major axis values ​​refers to a process of calculating the area of ​​an ellipse using the compressed minor axis and the major axis values.

[0041] Furthermore, the embodiment of the present invention converts the initial filling factor into a dynamic filling factor through the single-zone deformation area, so as to dynamically adjust the filling factor of each layer of wire in the winding based on the elastic deformation of the wire when current is passing through the wire, thereby improving the accuracy of subsequent correction of eddy current loss using the dynamic filling factor.

[0042] It should be noted that the embodiment of the present invention only considers the elastic deformation of the wire when current is flowing. Since the elastic deformation is caused by low current, the embodiment of the present invention only considers the excitation current of low current.

[0043] In one embodiment of the present invention, the initial filling factor is converted into a dynamic filling factor through the single-zone deformation area, including: obtaining the layer height corresponding to the single-zone deformation area; determining the contour volume of the partitioned winding using the layer height and the slot width of the partitioned winding; determining the actual volume of the partitioned winding using the single-zone deformation area and the number of wires of the partitioned winding; and using the ratio of the actual volume to the contour volume as the dynamic filling factor.

[0044] Optionally, the process of using the ratio of the actual volume to the contour volume as a dynamic filling factor is as follows: ; in, represents the dynamic fill factor, Indicates Layer height of layer conductors, Indicates the slot width, represents the deformation area of ​​a single zone, Indicates The number of layer wires.

[0045] The outline volume refers to the total volume enclosed by the outline of the partitioned winding.

[0046] S4. Based on the winding-related parameters, the initial eddy current loss of the partition winding is analyzed, and the initial eddy current loss is dynamically adjusted using the dynamic filling factor to obtain the dynamic eddy current loss, and the final eddy current loss of the inductor winding is determined by the dynamic eddy current loss.

[0047] The embodiment of the present invention analyzes the initial eddy current loss of the partition winding based on the winding related parameters, so as to calculate the eddy current loss of the partition winding by using the conventional Dowell model.

[0048] Among them, the Dowell model is as follows: ; in, , represents the current frequency, represents the angular frequency, represents the vacuum permeability, Represents the material's electrical conductivity, also known as electrical conductivity, Indicates the layer height, Indicates the number of wires. represents the volume of the conductor, express The reciprocal of .

[0049] In one embodiment of the present invention, the initial eddy current loss of the partitioned winding is analyzed based on the winding-related parameters, including: obtaining the current frequency, material conductivity and magnetic induction intensity in the winding-related parameters; obtaining the layer height and the number of wires of the partitioned winding; and analyzing the initial eddy current loss of the partitioned winding based on the current frequency, the material conductivity, the magnetic induction intensity, the layer height and the number of wires.

[0050] Furthermore, the embodiment of the present invention dynamically adjusts the initial eddy current loss by utilizing the dynamic filling factor to eliminate the process of finite element simulation of the winding, and directly calculates the accurate eddy current loss by the dynamic filling factor, thereby improving the simplicity of eddy current loss measurement.

[0051] In one embodiment of the present invention, the dynamic filling factor is used to dynamically adjust the initial eddy current loss to obtain the dynamic eddy current loss, including: determining an adjustment index of the dynamic filling factor; based on the adjustment index and the dynamic filling factor, the initial eddy current loss is dynamically adjusted using the following formula to obtain the dynamic eddy current loss: ; in, represents the dynamic eddy current loss, represents the initial eddy current loss, represents the dynamic fill factor, Represents the adjustment index.

[0052] The adjustment index refers to a constant set according to different application scenarios, such as 1.2 to 1.5.

[0053] In one embodiment of the present invention, determining the final eddy current loss of the inductor winding through the dynamic eddy current loss includes: integrating the dynamic eddy current loss of each layer in the dynamic eddy current loss into the final eddy current loss of the inductor winding.

[0054] Optionally, the process of integrating the dynamic eddy current loss of each layer of the dynamic eddy current loss into the final eddy current loss of the inductor winding refers to adding the dynamic eddy current losses of all layers to obtain the final eddy current loss, for example, adding the dynamic eddy current losses of the first layer of wire to the tenth layer of wire to obtain the total loss, and taking this total loss as the final eddy current loss.

[0055] S5. Using the final eddy current loss as the loss measurement result of the inductor winding.

[0056] It should be noted that since there is no unified eddy current loss calculation formula in the industry, the measurement of eddy current loss is more difficult than the measurement of other losses. The measurement of other types of losses is relatively mature, so the embodiment of the present invention only considers the measurement of eddy current loss.

[0057] Compared with the problem described in the background technology, the embodiment of the present invention partitions the inductor winding to divide the wires with the same conductivity and frequency response characteristics in the inductor winding into the same layer of wires, thereby realizing layered processing of the wires of the inductor winding, thereby paving the way for setting different filling factors for each layer later. Furthermore, the embodiment of the present invention sets the initial filling factor of the partitioned winding to calculate the initial filling factor of the partitioned winding based on the layout of the wires at the initial time. The embodiment of the present invention analyzes the single deformation area of ​​a single wire in the inductor winding based on the factor-related parameters to calculate the cross-sectional area of ​​the wire at the initial time. Furthermore, the embodiment of the present invention performs wire accumulation processing on the single deformation area according to the factor-related parameters to calculate the wire under the influence of the input excitation current. , the elastic deformation caused by the cross-sectional area, further, the embodiment of the present invention converts the initial filling factor into a dynamic filling factor through the single-zone deformation area, so as to dynamically adjust the filling factor of each layer of wire in the winding based on the elastic deformation of the wire when the current is passing, thereby improving the accuracy of the subsequent correction of eddy current loss using the dynamic filling factor, the embodiment of the present invention analyzes the initial eddy current loss of the partitioned winding based on the winding-related parameters, so as to calculate the eddy current loss of the partitioned winding using the conventional Dowell model, further, the embodiment of the present invention dynamically adjusts the initial eddy current loss by using the dynamic filling factor, so as to eliminate the process of finite element simulation of the winding, and directly calculates the accurate eddy current loss by the dynamic filling factor, thereby improving the simplicity of eddy current loss measurement. Therefore, the winding loss measurement method and system of the inductor provided in the embodiment of the present invention can take into account both measurement accuracy and measurement simplicity.

[0058] Embodiment 2: like Figure 2 The figure shows a functional module diagram of a winding loss measurement system of an inductor according to the present invention.

[0059] The winding loss measurement system 200 of an inductor described in the present invention can be installed in an electronic device. According to the functions to be implemented, the winding loss measurement system of the inductor can include a tool configuration module 201, a parameter measurement module 202, a factor conversion module 203, a loss determination module 204 and a loss measurement module 205. The module described in the present invention can also be called a unit, which refers to a series of computer program segments that can be executed by an electronic device processor and can complete fixed functions, which are stored in the memory of the electronic device.

[0060] In the embodiment of the present invention, the functions of each module / unit are as follows: The tool configuration module 201 is used to partition the inductor winding to obtain partitioned windings, set the initial filling factor of the partitioned windings, configure a factor detection tool corresponding to the filling factor, and configure a winding detection tool for the partitioned windings; The parameter measurement module 202 is used to measure the factor-related parameters of the partition winding using the factor detection tool after inputting the excitation current into the inductor winding, and to measure the winding-related parameters of the partition winding using the winding detection tool; The factor conversion module 203 is used to analyze the single deformation area of ​​a single wire in the inductor winding based on the factor-related parameters, perform wire accumulation processing on the single deformation area according to the factor-related parameters, obtain the single-zone deformation area of ​​the partitioned winding, and convert the initial filling factor into a dynamic filling factor through the single-zone deformation area; The loss determination module 204 is used to analyze the initial eddy current loss of the partition winding based on the winding related parameters, dynamically adjust the initial eddy current loss by using the dynamic filling factor to obtain the dynamic eddy current loss, and determine the final eddy current loss of the inductor winding by using the dynamic eddy current loss; The loss measurement module 205 is used to use the final eddy current loss as the loss measurement result of the inductor winding.

[0061] In detail, each module in the inductor winding loss measurement system 200 in the embodiment of the present invention is used in the same manner as described above. Figure 1 The same technical means are used to measure the winding loss of the inductor described in the invention and can produce the same technical effect, so it will not be repeated here.

[0062] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A method for measuring the winding loss of an inductor, characterized in that: The method comprises: Partitioning the inductor winding to obtain partitioned windings, setting an initial filling factor of the partitioned windings, configuring a factor detection tool corresponding to the filling factor, and configuring a winding detection tool for the partitioned windings; After inputting the excitation current into the inductor winding, the factor-related parameters of the partition winding are measured by the factor detection tool, and the winding-related parameters of the partition winding are measured by the winding detection tool; Based on the factor-related parameters, a single deformation area of ​​a single wire in the inductor winding is analyzed, and according to the factor-related parameters, a wire accumulation process is performed on the single deformation area to obtain a single-zone deformation area of ​​the partitioned winding, and the initial filling factor is converted into a dynamic filling factor through the single-zone deformation area; Based on the winding-related parameters, analyzing the initial eddy current loss of the partition winding, dynamically adjusting the initial eddy current loss using the dynamic filling factor to obtain a dynamic eddy current loss, and determining the final eddy current loss of the inductor winding using the dynamic eddy current loss; The final eddy current loss is used as the loss measurement result of the inductor winding.

2. The method for measuring the winding loss of an inductor according to claim 1, characterized in that: The partitioning of the inductor winding to obtain the partitioned winding includes: Querying the conductivity and frequency response characteristics of the wire on the inductor winding; When the conductivity and the frequency response characteristics are the same, the conductive wires on the inductor winding are divided into the same layer of conductive wires; The partition windings are determined using the same layer of conductors.

3. The method for measuring the winding loss of an inductor according to claim 1, characterized in that: The step of setting the initial filling factor of the partition winding comprises: Obtaining the initial area, layer height, slot width and number of conductors of a single zone of the partitioned winding; The initial filling factor of the partition winding is calculated according to the initial area of ​​the single zone, the layer height, the slot width and the number of wires.

4. The method for measuring the winding loss of an inductor according to claim 1, characterized in that: The analyzing the deformation area of ​​a single wire in the inductor winding based on the factor-related parameters includes: Obtaining diameter, winding tension, elastic modulus and Poisson's ratio from the factor-related parameters; According to the diameter, the winding tension, the elastic modulus and the Poisson's ratio, Calculating the short axis value of the single wire; Calculating the long axis value of the single wire according to the diameter, the winding tension and the elastic modulus; The single deformation area of ​​a single wire in the inductor winding is calculated by the short axis value and the long axis value.

5. The method for measuring the winding loss of an inductor according to claim 1, characterized in that: The step of performing wire accumulation processing on the single deformation area according to the factor-related parameters to obtain the single-zone deformation area of ​​the partitioned winding includes: Obtaining diameter, winding tension, elastic modulus and Poisson's ratio from the factor-related parameters; Obtaining the short axis value and the long axis value corresponding to the single deformation area; Performing short-axis compression on the short-axis value to obtain a compressed short-axis; The single-zone deformation area of ​​the partitioned winding is determined by using the compression minor axis and the major axis values.

6. The method for measuring the winding loss of an inductor according to claim 1, characterized in that: The converting the initial filling factor into a dynamic filling factor by using the deformation area of ​​the single zone comprises: Obtaining the layer height corresponding to the deformation area of ​​the single zone; Determine the contour volume of the partition winding by using the layer height and the slot width of the partition winding; Determine the actual volume of the partition winding using the deformation area of ​​the single zone and the number of wires of the partition winding; The ratio of the actual volume to the contour volume is taken as a dynamic filling factor.

7. The method for measuring the winding loss of an inductor according to claim 1, characterized in that: The analyzing the initial eddy current loss of the partition winding based on the winding related parameters includes: Obtaining the current frequency, material conductivity and magnetic induction intensity among the winding related parameters; Obtaining the layer height and the number of wires of the partition winding; The initial eddy current loss of the partition winding is analyzed based on the current frequency, the material conductivity, the magnetic induction intensity, the layer height and the number of wires.

8. The method for measuring the winding loss of an inductor according to claim 1, characterized in that: The method of dynamically adjusting the initial eddy current loss by using the dynamic filling factor to obtain the dynamic eddy current loss includes: determining an adjustment index of the dynamic fill factor; Based on the adjustment index and the dynamic filling factor, the initial eddy current loss is dynamically adjusted to obtain a dynamic eddy current loss.

9. The method for measuring the winding loss of an inductor according to claim 1, characterized in that: Determining the final eddy current loss of the inductor winding by using the dynamic eddy current loss includes: The dynamic eddy current loss of each layer in the dynamic eddy current loss is integrated into the final eddy current loss of the inductor winding.

10. A system for measuring the winding loss of an inductor, characterized in that: The system comprises: A tool configuration module, used to partition the inductor winding to obtain a partitioned winding, set an initial filling factor of the partitioned winding, configure a factor detection tool corresponding to the filling factor, and configure a winding detection tool for the partitioned winding; A parameter measurement module, used for measuring the factor-related parameters of the partition winding using the factor detection tool after inputting the excitation current into the inductor winding, and measuring the winding-related parameters of the partition winding using the winding detection tool; A factor conversion module, configured to analyze a single deformation area of ​​a single wire in the inductor winding based on the factor-related parameters, perform wire accumulation processing on the single deformation area according to the factor-related parameters, obtain a single-zone deformation area of ​​the partitioned winding, and convert the initial filling factor into a dynamic filling factor through the single-zone deformation area; A loss determination module, configured to analyze the initial eddy current loss of the partition winding based on the winding related parameters, dynamically adjust the initial eddy current loss using the dynamic filling factor to obtain a dynamic eddy current loss, and determine the final eddy current loss of the inductor winding using the dynamic eddy current loss; The loss measurement module is used to use the final eddy current loss as the loss measurement result of the inductor winding.

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