Winding and magnetic core synchronous integration main transformer capable of inhibiting magnetic circuit counteracting

Abstract

The invention relates to the technical field of transformers, in particular to a winding and magnetic core synchronous integration main transformer capable of suppressing magnetic circuit counteracting, which comprises a magnetic core body, a primary side inductor group and a secondary side inductor group, the primary side inductor group comprises a first primary side winding and a second primary side winding which are arranged in series, and two middle column groups which are arranged at intervals are arranged in the magnetic core body; the magnetic fluxes of the two middle column groups are kept in different directions, and each middle column group comprises a resonant inductor middle column and a main transformer middle column which are arranged at an interval. According to the invention, through the first primary winding and the second primary winding which are arranged in series, the magnetic fluxes of the two middle column groups are kept in different directions, so that the magnetic density of the middle columns can be utilized to the maximum extent, and meanwhile, the middle column groups comprising the resonant inductor middle columns and the main transformer middle columns which are arranged at intervals are adopted; the primary side inductor group is wound on the middle column group, so that the leakage inductor and the resonant inductor of the main transformer are connected in series, the circuit design is simplified, parasitic parameters can be utilized at the maximum efficiency, and the transmission efficiency of the main transformer can be further improved.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, and in particular to a main transformer with synchronous integration of windings and magnetic cores capable of suppressing magnetic circuit cancellation. Background Art

[0002] Transformers are an indispensable part of power systems and electronic equipment. They use the principle of electromagnetic induction. When the current passing through the primary winding changes, a changing magnetic field will be generated in the magnetic core. This changing magnetic field will induce an electromotive force in the secondary winding, thereby realizing voltage conversion. Ideally, the transformer can be regarded as a lossless energy transfer device, that is, the input power is basically equal to the output power, and it has a high energy transfer efficiency. The current energy transfer efficiency of transformers is about 94%-96%, but in high-power transmission, the energy loss cannot be ignored. At the same time, existing high-power transformers generally adopt a multi-layer stacking solution, such as Figure 6 A multi-layer stacked transformer skeleton is shown in the figure. It consists of multiple independent layers, each layer has its own winding slot, and the number of layers can be selected according to actual needs to meet the needs of high-power operation. However, its structure is relatively complex and the heat dissipation system is difficult to arrange. At the same time, the independent resonant inductor and main transformer also need to be arranged with independent magnetic cores and windings, which causes a lot of space waste and increases the difficulty of design. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the existing transformer has low energy transfer efficiency and is difficult to design, resulting in serious residual magnetism and leakage inductance, which is not conducive to the operation and use of high-power transformers.

[0004] In order to solve the above technical problems, the present invention adopts the following technical scheme: a main transformer with windings and magnetic cores synchronously integrated for suppressing magnetic circuit cancellation, comprising a magnetic core body, a primary inductance group and a secondary inductance group, the primary inductance group comprising a first primary winding and a second primary winding arranged in series, two groups of middle column groups arranged at intervals are arranged inside the magnetic core body, the first primary winding and the second primary winding are respectively wound on the two groups of middle column groups, the magnetic fluxes of the two groups of middle column groups are kept in opposite directions, the middle column group comprises a resonant inductance middle column and a main transformer middle column arranged at intervals, and two secondary inductance groups are provided, and the two secondary inductance groups are respectively wound on their corresponding main transformer middle columns.

[0005] When the present invention is working, the first primary winding and the second primary winding are arranged in series so that the magnetic flux of the two groups of center column groups remain in opposite directions, which can maximize the use of residual magnetism, reduce hysteresis loss, and maximize the use of the magnetic flux density of the center column, thereby improving the overall efficiency of the main transformer. At the same time, a center column group including a resonant inductor center column and a main transformer center column arranged at intervals is adopted, so that the primary inductor group is wound on the center column group to realize the series connection of the main transformer leakage inductance and the resonant inductor. While simplifying the circuit design, parasitic parameters can be used with maximum efficiency, which is helpful to improve the quality factor of the resonant circuit, and can further improve the transmission efficiency of the main transformer and reduce energy loss.

[0006] Preferably, the magnetic core body includes two interlocking magnetic core components, and two groups of magnetic flux components are protruding on one end surface of the two magnetic core components close to each other, each group of magnetic flux components includes two magnetic flux protrusions, and the magnetic flux protrusions respectively cooperate with their corresponding magnetic flux protrusions to form a resonant inductor middle column or a main transformer middle column.

[0007] Preferably, an air gap is maintained between the magnetic flux protrusions and the corresponding magnetic flux protrusions, and the air gap is arranged in the middle of the primary inductance group and is located away from the secondary inductance group.

[0008] When the present invention is working, a symmetrically arranged magnetic core body is used, and the air gap is arranged in the middle position, which can optimize the magnetic flux path distribution of the main transformer, reduce the occurrence of local saturation, and effectively improve the linearity and stability of the main transformer. At the same time, the secondary inductance group is kept away from the air gap, which can avoid the eddy current effect caused by the strong magnetic field change at the air gap, thereby further improving the transmission efficiency of the main transformer.

[0009] Preferably, limiting protrusions are provided on both side edges of one end face of the two magnetic core components close to each other, and the limiting protrusions are extended along the connecting direction of the two magnetic flux protrusions in the magnetic flux component. The two groups of magnetic flux components are arranged between the two limiting protrusions, and the limiting protrusions abut against the corresponding limiting protrusions when the magnetic core components are buckled.

[0010] Preferably, both sides of the inner end surface of the limiting protrusion are provided with wrapping flanges protruding inwardly, and the wrapping flanges are arranged on the periphery of the magnetic flux component.

[0011] Preferably, a fixed base is further included, the shape of the magnetic core assembly is set to be a flat plate, the magnetic core body is installed on the fixed base, and the wiring parts of the primary inductance group and the secondary inductance group are both led out through the fixed base.

[0012] When the present invention is working, the magnetic core body formed by buckling the flat magnetic core components has a compact structure, high mechanical strength, a large heat dissipation area, uniform temperature distribution, and good heat dissipation performance. At the same time, it shortens the distance between windings and reduces leakage inductance, making it suitable for high-power and high-frequency working scenarios.

[0013] Preferably, the two secondary inductor groups are arranged in parallel.

[0014] Preferably, the secondary inductor group includes a first copper bar and a third copper bar, the first copper bar and the third copper bar are both wound around the corresponding main transformer center column, the first copper bar and the third copper bar are arranged at two ends of the primary inductor group at intervals, the first end of the first copper bar is led out through a corresponding switching component and connected to the first end of the third copper bar, and the second end of the first copper bar and the second end of the third copper bar are both led out by way of a center tap.

[0015] Preferably, the secondary inductor group also includes a second copper bar and a fourth copper bar, the second copper bar and the fourth copper bar are both wound around the corresponding main transformer center column, the second copper bar and the fourth copper bar are arranged at intervals at both ends of the primary inductor group, the first end of the second copper bar is led out through a corresponding switching component and connected to the first end of the fourth copper bar, and the second end of the second copper bar and the second end of the fourth copper bar are both led out by way of a center tap.

[0016] When the present invention is working, positive and negative symmetrical voltage output can be achieved through the mutual cooperation of the first copper bar, the second copper bar, the third copper bar and the fourth copper bar, and the application range is wide. At the same time, the first copper bar and the third copper bar are arranged at intervals, and the second copper bar and the fourth copper bar are arranged at intervals to avoid heat accumulation and improve heat dissipation efficiency, thereby further improving the stability of the main transformer.

[0017] Preferably, the end faces of the resonant inductor center column and the main transformer center column that are away from each other are both set to be convex arc surfaces that match the shape of the primary inductor group or the secondary inductor group, the other end face of the resonant inductor center column is set to be a concave arc surface that matches the shape of the secondary inductor group, and the other end face of the main transformer center column is set to be a convex arc surface that matches the shape of the secondary inductor group.

[0018] The beneficial technical effects of the present invention include: 1. The present invention maintains anachronism in the magnetic flux of the two middle column groups by arranging the first primary winding and the second primary winding in series, which can maximize the use of residual magnetism, reduce hysteresis loss, and maximize the use of the magnetic flux density of the middle column, thereby improving the overall efficiency of the main transformer. At the same time, a middle column group including a resonant inductor middle column and a main transformer middle column arranged at intervals is adopted, so that the primary inductor group is wound on the middle column group to realize the series connection of the main transformer leakage inductance and the resonant inductor. While simplifying the circuit design, parasitic parameters can be utilized with maximum efficiency, which is helpful to improve the quality factor of the resonant circuit, and can further improve the transmission efficiency of the main transformer and reduce energy loss.

[0019] 2. The present invention adopts a symmetrically arranged magnetic core body and arranges the air gap in the middle position, which can optimize the magnetic flux path distribution of the main transformer and reduce the occurrence of local saturation. It can effectively improve the linearity and stability of the main transformer. At the same time, the secondary inductance group is kept away from the air gap, which can avoid the eddy current effect caused by the strong magnetic field changes at the air gap, thereby further improving the transmission efficiency of the main transformer.

[0020] 3. The present invention has a magnetic core body formed by buckling together flat-plate magnetic core components, which has a compact structure, high mechanical strength, a large heat dissipation area, uniform temperature distribution, and good heat dissipation performance. At the same time, it reduces the distance between windings and reduces leakage inductance, making it suitable for high-power and high-frequency working scenarios.

[0021] 4. The present invention can achieve positive and negative symmetrical voltage output through the mutual cooperation of the first copper bar, the second copper bar, the third copper bar and the fourth copper bar, and has a wide range of applications. At the same time, arranging the first copper bar and the third copper bar at intervals, and arranging the second copper bar and the fourth copper bar at intervals can avoid heat accumulation and improve heat dissipation efficiency, thereby further improving the stability of the main transformer.

[0022] Other features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1 An exploded view of a main transformer with synchronous integration of windings and magnetic cores to suppress magnetic circuit cancellation; Figure 2 A cross-sectional view of a main transformer having synchronous integration of windings and magnetic cores for suppressing magnetic circuit cancellation; Figure 3 It is the working state wiring diagram of the main transformer with synchronous integration of winding and magnetic core to suppress magnetic circuit cancellation; Figure 4 A schematic diagram of magnetic circuit simulation of a main transformer with synchronous integration of windings and magnetic cores for suppressing magnetic circuit cancellation; Figure 5Schematic diagram of loss simulation of the main transformer with synchronous integration of windings and magnetic cores to suppress magnetic circuit cancellation Figure 6 It is a schematic diagram of the structure of a multi-layer stacked transformer skeleton. DETAILED DESCRIPTION

[0024] The technical solutions of the embodiments of the present invention are explained and described below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0025] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operate in a specific direction. Therefore, it should not be understood as a limitation of the present invention. Embodiment 1:

[0026] See also Figure 1 This embodiment discloses a main transformer with synchronous integration of windings and magnetic cores for suppressing magnetic circuit cancellation, including a magnetic core body 1, a primary inductance group 2 and a secondary inductance group 3, which will be described in detail below with reference to the accompanying drawings.

[0027] See also Figures 1 to 5 In this embodiment, the primary inductance group 2 includes a first primary winding 21 and a second primary winding 22 arranged in series, and two groups of middle column groups arranged at intervals are provided inside the magnetic core body 1. The first primary winding 21 and the second primary winding 22 are respectively wound on the two groups of middle column groups, and the magnetic fluxes of the two groups of middle column groups remain in opposite directions. The middle column group includes a resonant inductance middle column 111 and a main transformer middle column 112 arranged at intervals. There are two secondary inductance groups 3, and the two secondary inductance groups 3 are respectively wound on their corresponding main transformer middle columns 112.

[0028] When the present embodiment is working, the magnetic flux of the two middle column groups is kept in opposite directions by the first primary winding 21 and the second primary winding 22 arranged in series. Figure 4 , Figure 4: is a schematic diagram of magnetic circuit simulation of this embodiment, wherein the magnetic field intensity at the positions of the two groups of middle columns is the largest, the magnetic flux distribution is concentrated, the overall magnetic flux leakage of the main transformer is small, the residual magnetism can be utilized to the maximum extent, the hysteresis loss can be reduced, and the magnetic density of the middle column can be utilized to the maximum extent, thereby improving the overall efficiency of the main transformer. At the same time, a middle column group including a resonant inductor middle column 111 and a main transformer middle column 112 arranged at intervals is adopted, so that the primary inductor group 2 is wound on the middle column group to realize the series connection of the main transformer leakage inductance and the resonant inductor, which can simplify the circuit design and utilize the parasitic parameters with the maximum efficiency, which is helpful to improve the quality factor of the resonant circuit, and can further improve the transmission efficiency of the main transformer and reduce energy loss. Please refer to Figure 5 and Table 1 below, Figure 5 It is a loss simulation diagram of the present embodiment, wherein the horizontal axis of the graph is time in microseconds, and the vertical axis of the graph is power loss in watts. The red curve in the graph is core loss, indicating energy loss in the core material, the green curve is solid loss, indicating conductor loss in the winding, the blue curve is harness loss, indicating additional loss generated when multiple strands of wire are twisted, and the orange curve is AC harness loss, indicating loss generated by the harness under AC conditions. According to the simulation results, at an output power of 2190 W, the loss is 22.46 W, and the calculated comprehensive efficiency is 98.98%, which is a significant improvement compared to the maximum efficiency of 96% of the prior art solution.

[0029] Table 1 Loss simulation table

[0030] In a specific implementation, the magnetic core body 1 includes two interlocking magnetic core components 12, and two groups of magnetic flux components are protruding from one end surface of the two magnetic core components 12 close to each other, and each group of magnetic flux components includes two magnetic flux protrusions 13, and the magnetic flux protrusions 13 respectively cooperate with their respective corresponding magnetic flux protrusions 13 to form a resonant inductor middle column 111 or a main transformer middle column 112.

[0031] When the present embodiment is working, a symmetrically arranged magnetic core body 1 is used, and the air gap is arranged in the middle position, which can optimize the magnetic flux path distribution of the main transformer, reduce the occurrence of local saturation, and effectively improve the linearity and stability of the main transformer. At the same time, the secondary inductance group 3 is kept away from the air gap, which can avoid the eddy current effect caused by the strong magnetic field change at the air gap, thereby further improving the transmission efficiency of the main transformer.

[0032] Preferably, in order to further reduce magnetic leakage, limiting protrusions 14 are provided on the edge positions of both sides of one end surface where the two magnetic core components 12 are close to each other, and the limiting protrusions 14 are extended along the connecting direction of the two magnetic flux protrusions 13 in the magnetic flux component. The two groups of magnetic flux components are arranged between the two limiting protrusions 14. The limiting protrusions 14 abut against the corresponding limiting protrusions 14 when the magnetic core components 12 are buckled. At the same time, wrapping flanges 15 are provided inwardly on both sides of the inner end surfaces of the limiting protrusions 14. The wrapping flanges 15 are arranged on the periphery of the magnetic flux component, with high structural strength and good heat dissipation effect. In the specific implementation, it also includes a fixed base 4, and the shape of the magnetic core component 12 is set to be flat, and the magnetic core body 1 is installed on the fixed base 4, and the wiring parts of the primary inductance group 2 and the wiring parts of the secondary inductance group 3 are both led out through the fixed base 4.

[0033] When this embodiment is working, the magnetic core body 1 formed by buckling the flat magnetic core components 12 has a compact structure, high mechanical strength, a large heat dissipation area, uniform temperature distribution, and good heat dissipation performance. At the same time, it shortens the distance between windings and reduces leakage inductance, making it suitable for high-power and high-frequency working scenarios. Embodiment 2:

[0034] See also Figure 1 This embodiment provides a main transformer with synchronous integration of windings and magnetic cores that suppress magnetic circuit cancellation. The same points as those in the first embodiment are not repeated here, and the differences are described in detail below with reference to the accompanying drawings.

[0035] See also Figure 2 and Figure 3 In this embodiment, the two secondary inductor groups 3 are arranged in parallel, which can better distribute the load and improve the overall efficiency of the main transformer.

[0036] Preferably, an air gap is maintained between the magnetic flux protrusion 13 and the corresponding magnetic flux protrusion 13, and the air gap is arranged in the middle of the primary inductance group 2 and is located away from the secondary inductance group 3. In a specific implementation, the secondary inductance group 3 includes a first copper bar 31 and a third copper bar 33, and the first copper bar 31 and the third copper bar 33 are both wound around the corresponding main transformer middle column 112. The first copper bar 31 and the third copper bar 33 are arranged at intervals at both ends of the primary inductance group 2, and the first end of the first copper bar 31 is led out through the corresponding on-off component and connected to the first end of the third copper bar 33, and the second end of the first copper bar 31 and the third copper bar 33 are connected to the first end of the primary inductance group 2. The second ends of the three copper bars 33 are all led out by means of a center tap. In order to achieve positive and negative symmetrical voltage output, the secondary inductor group 3 also includes a second copper bar 32 and a fourth copper bar 34. The second copper bar 32 and the fourth copper bar 34 are both wound around the corresponding main transformer middle column 112. The second copper bar 32 and the fourth copper bar 34 are arranged at intervals at both ends of the primary inductor group 2. The first end of the second copper bar 32 is led out by means of a corresponding on-off component and connected to the first end of the fourth copper bar 34. The second end of the second copper bar 32 and the second end of the fourth copper bar 34 are both led out by means of a center tap. Please refer to Figure 3 In this embodiment, the on-off component is set as a field effect tube, and the second end of the first copper bar 31, the second end of the third copper bar 33, the second end of the second copper bar 32 and the second end of the fourth copper bar 34 are used as common pins, which are one output. The first end of the first copper bar 31 is connected to the first end of the third copper bar 33 through the field effect tube and is used as one polarity output of another output, and the first end of the second copper bar 32 is connected to the first end of the third copper bar 33 through the field effect tube and is used as another polarity output of another output.

[0037] When the present embodiment is working, through the mutual cooperation of the first copper bar 31, the second copper bar 32, the third copper bar 33 and the fourth copper bar 34, positive and negative symmetrical voltage output can be achieved, and the application range is wide. At the same time, arranging the first copper bar 31 and the third copper bar 33 at intervals, and arranging the second copper bar 32 and the fourth copper bar 34 at intervals can avoid heat accumulation, improve heat dissipation efficiency, and further improve the stability of the main transformer.

[0038] As a further improvement of this embodiment, the end faces of the resonant inductor center column 111 and the main transformer center column 112 that are away from each other are both set to a convex arc surface that matches the shape of the primary inductor group 2 or the secondary inductor group 3, the other end face of the resonant inductor center column 111 is set to a concave arc surface that matches the shape of the secondary inductor group 3, and the other end face of the main transformer center column 112 is set to a convex arc surface that matches the shape of the secondary inductor group 3, which facilitates the winding of the primary inductor group 2 and the secondary inductor group 3, reduces the difficulty of assembly, and can improve production efficiency.

[0039] In the specific implementation, in order to further reduce the magnetic flux density and avoid core saturation while ensuring a small volume, it is necessary to optimize and adjust various parameters, wherein the cross-sectional area of ​​the main transformer middle column 112 is calculated using the following formula: ;

[0040] in: is the cross-sectional area of ​​the main transformer center column 112; is the input voltage; is the maximum duty cycle; is the number of turns of the primary inductor group 2; is the maximum magnetic flux density; is the switching frequency; The cross-sectional area of ​​the column 111 of the resonant inductor is calculated using the following formula: ;

[0041] in: is the cross-sectional area of ​​the column 111 of the resonant inductor; is the resonant inductor; is the effective value of the resonant current; is the number of turns of the secondary inductor group 3; is the resonant magnetic flux density; is the resonant frequency; At the same time, the cross-sectional area of ​​the middle column 111 of the resonant inductor is corrected to determine whether In the range of, m is the cross-sectional area ratio, when working, it is generally set to 0.33 to 0.50, when not, the cross-sectional area of ​​the resonant inductor column 111 is re-determined, and the magnetic flux density of the resonant inductor column 111 is recalculated to be lower than the maximum magnetic flux density; The spacing between the two groups of magnetic flux components, as well as the spacing between the main transformer middle column 112 and the resonant inductor middle column 111 are calculated using the following formula: ;

[0042] ;

[0043] in: The distance between the main transformer middle column 112 and the resonant inductor middle column 111, It is an empirical coefficient. When working, it is dynamically selected between 0.8 and 1.2 according to the transformer load. is the distance between two sets of flux components, When performing a temperature rise test on the magnetic core body 1, a proportional coefficient is used to find the optimal point of heat dissipation efficiency, which is generally in the range of 1.5 to 2; It is also necessary to verify the spacing to balance the pressure of the magnetic circuit and heat dissipation in the transformer. The following formula is used for verification: ; ; in: and These are all selected safety factors. In order to improve the working stability of the transformer, 10 is generally selected. It can also be customized according to actual needs; is the vacuum permeability; is the magnetic permeability of the core body 1; is the magnetic path length of the main transformer center column 112; It is the total magnetic path length of a single center column group. Through subsequent optimization, it can ensure uniform magnetic flux density, while avoiding leakage magnetic interference as much as possible, improving heat dissipation efficiency, and strengthening the transformer's workload capacity.

[0044] The beneficial technical effects of this embodiment include: the present invention maintains antagonistic magnetic fluxes of the two middle column groups by arranging the first primary winding and the second primary winding in series, which can maximize the use of residual magnetism, reduce hysteresis loss, and maximize the use of the magnetic flux density of the middle column, thereby improving the overall efficiency of the main transformer. At the same time, a middle column group including a resonant inductor middle column and a main transformer middle column arranged at intervals is adopted, so that the primary inductor group is wound on the middle column group to realize the series connection of the main transformer leakage inductance and the resonant inductor. While simplifying the circuit design, parasitic parameters can be utilized with maximum efficiency, which helps to improve the quality factor of the resonant circuit, and can further improve the transmission efficiency of the main transformer and reduce energy loss.

[0045] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A main transformer with synchronous integration of winding and magnetic core for suppressing magnetic circuit cancellation, characterized in that: The invention comprises a magnetic core body (1), a primary inductance group (2) and a secondary inductance group (3), wherein the primary inductance group (2) comprises a first primary winding (21) and a second primary winding (22) arranged in series, two groups of middle column groups arranged at intervals are provided inside the magnetic core body (1), the first primary winding (21) and the second primary winding (22) are respectively wound on the two groups of middle column groups, and the magnetic fluxes of the two groups of middle column groups are kept in different directions, the middle column group comprises a resonant inductance middle column (111) and a main transformer middle column (112) arranged at intervals, and two secondary inductance groups (3) are provided, and the two secondary inductance groups (3) are respectively wound on their corresponding main transformer middle columns (112).

2. The main transformer with synchronous integration of winding and magnetic core for suppressing magnetic circuit cancellation according to claim 1, characterized in that: The magnetic core body (1) comprises two magnetic core components (12) interlocked with each other, two groups of magnetic flux components are protrudingly provided on one end surface of the two magnetic core components (12) close to each other, each group of magnetic flux components comprises two magnetic flux protrusions (13), and the magnetic flux protrusions (13) respectively cooperate with the corresponding magnetic flux protrusions (13) to form a resonant inductor middle column (111) or a main transformer middle column (112).

3. The main transformer with synchronous integration of winding and magnetic core for suppressing magnetic circuit cancellation according to claim 2, characterized in that: An air gap is maintained between the magnetic flux protrusions (13) and the corresponding magnetic flux protrusions (13), and the air gap is arranged in the middle of the primary inductance group (2) and is located away from the secondary inductance group (3).

4. The main transformer with synchronous integration of winding and magnetic core for suppressing magnetic circuit cancellation according to claim 2, characterized in that: Limiting protrusions (14) are provided at both side edge positions of one end surface of the two magnetic core components (12) close to each other. The limiting protrusions (14) are arranged to extend along the direction of the connection line of the two magnetic flux protrusions (13) in the magnetic flux component. The two groups of magnetic flux components are arranged between the two limiting protrusions (14). The limiting protrusions (14) abut against the corresponding limiting protrusions (14) when the magnetic core components (12) are buckled.

5. The main transformer with synchronous integration of winding and magnetic core for suppressing magnetic circuit cancellation according to claim 4, characterized in that: Both sides of the inner end surface of the limiting protrusion (14) are provided with wrapping flanges (15) protruding inwards, and the wrapping flanges (15) are arranged on the periphery of the magnetic flux component.

6. The main transformer with synchronous integration of winding and magnetic core for suppressing magnetic circuit cancellation according to claim 2, characterized in that: It also comprises a fixed base (4), the shape of the magnetic core component (12) is set to be a flat plate, the magnetic core body (1) is mounted on the fixed base (4), and the wiring part of the primary inductance group (2) and the wiring part of the secondary inductance group (3) are both led out through the fixed base (4).

7. The main transformer with synchronous integration of winding and magnetic core for suppressing magnetic circuit cancellation according to claim 1, characterized in that: The two secondary inductor groups (3) are arranged in parallel.

8. The main transformer with synchronous integration of winding and magnetic core for suppressing magnetic circuit cancellation according to claim 1, characterized in that: The secondary inductor group (3) comprises a first copper bar (31) and a third copper bar (33), the first copper bar (31) and the third copper bar (33) are both wound around a corresponding main transformer middle column (112), the first copper bar (31) and the third copper bar (33) are arranged at intervals at two ends of the primary inductor group (2), the first end of the first copper bar (31) is led out through a corresponding on-off component and connected to the first end of the third copper bar (33), and the second end of the first copper bar (31) and the second end of the third copper bar (33) are both led out by means of a center tap.

9. The main transformer with synchronous integration of winding and magnetic core for suppressing magnetic circuit cancellation according to claim 8, characterized in that: The secondary inductor group (3) further comprises a second copper bar (32) and a fourth copper bar (34), the second copper bar (32) and the fourth copper bar (34) are both wound around the corresponding main transformer middle column (112), the second copper bar (32) and the fourth copper bar (34) are arranged at intervals at both ends of the primary inductor group (2), the first end of the second copper bar (32) is led out through a corresponding on-off component and connected to the first end of the fourth copper bar (34), and the second end of the second copper bar (32) and the second end of the fourth copper bar (34) are both led out by means of a center tap.

10. The main transformer with synchronous integration of winding and magnetic core for suppressing magnetic circuit cancellation according to claim 1, characterized in that: The end faces of the resonant inductor column (111) and the main transformer column (112) that are away from each other are both arranged to be convex arc surfaces that match the shape of the primary inductor group (2) or the secondary inductor group (3); the other end face of the resonant inductor column (111) is arranged to be a concave arc surface that matches the shape of the secondary inductor group (3); and the other end face of the main transformer column (112) is arranged to be a convex arc surface that matches the shape of the secondary inductor group (3).

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