Main transformer with windings and magnetic cores synchronously integrated to suppress magnetic circuit cancellation

Abstract

The present invention relates to the technical field of transformers, and particularly to a main transformer with synchronous integration of windings and magnetic cores that suppresses magnetic circuit cancellation, including a magnetic core body, a primary inductor group, and a secondary inductor group. The primary inductor group includes a first primary winding and a second primary winding arranged in series. Inside the magnetic core body, there are two sets of middle column groups arranged at intervals, and the magnetic fluxes of the two sets of middle column groups remain in opposite directions. The middle column group includes a resonant inductor middle column and a main transformer middle column arranged at intervals. By arranging the first primary winding and the second primary winding in series in the present invention, the magnetic fluxes of the two sets of middle column groups can be kept in opposite directions, maximizing the utilization of the magnetic density of the middle columns. At the same time, by using a middle column group including a resonant inductor middle column and a main transformer middle column arranged at intervals, when the primary inductor group is wound around the middle column group, the leakage inductance of the main transformer can be connected in series with the resonant inductor, which can simplify the circuit design and maximize the utilization of parasitic parameters while further improving the transfer efficiency of the main transformer.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and particularly to a main transformer with synchronous integration of windings and cores that suppresses magnetic circuit cancellation. Background Art

[0002] A transformer is an indispensable part of power systems and electronic devices. It utilizes the principle of electromagnetic induction. When the current passing through the primary winding changes, a changing magnetic field is generated in the core, and this changing magnetic field induces an electromotive force in the secondary winding, thereby achieving voltage conversion. In an ideal situation, a 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 relatively high energy transfer efficiency. The current energy transfer efficiency of transformers is about 94% - 96%. However, in high-power transmission, the energy loss cannot be ignored. At the same time, existing high-power transformers generally adopt a multi-layer stacking scheme. For example Figure 6 a multi-layer stacking type transformer skeleton shown in [reference], which 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 requirements of high-power operation. However, its structure is relatively complex, and it is difficult to arrange the heat dissipation system. At the same time, the mutually independent resonant inductor and the main transformer also require independent cores and windings to be arranged, thus causing a large amount of space waste and increasing the design difficulty. Summary of the Invention

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

[0004] To solve the above technical problems, the present invention adopts the following technical solution: a main transformer with synchronous integration of windings and cores that suppresses magnetic circuit cancellation, including a core body, a primary inductor group, and a secondary inductor group. The primary inductor group includes a first primary winding and a second primary winding arranged in series. Two sets of middle column groups are arranged at intervals inside the core body. The first primary winding and the second primary winding are respectively wound around the two sets of middle column groups, and the magnetic fluxes of the two sets of middle column groups are kept in opposite directions. The middle column group includes a resonant inductor middle column and a main transformer middle column arranged at intervals. There are two secondary inductor groups, and the two secondary inductor groups are respectively wound around their corresponding main transformer middle columns.

[0005] When the present invention works, the first primary winding and the second primary winding arranged in series enable the magnetic fluxes of the two middle leg groups to remain in opposite directions, which can maximize the utilization of residual magnetism, reduce hysteresis loss, maximize the utilization of the magnetic density of the middle leg, thereby improving the overall efficiency of the main transformer. At the same time, a middle leg group including a resonating inductor middle leg and a main transformer middle leg arranged at intervals is adopted, so that the primary inductor group can be wound around the middle leg group to realize the series connection of the leakage inductance of the main transformer and the resonating inductor. While simplifying the circuit design, it can maximize the utilization of parasitic parameters, contribute to improving the quality factor of the resonant circuit, and can further improve the transfer efficiency of the main transformer and reduce energy loss.

[0006] Preferably, the magnetic core body includes two mutually buckled magnetic core components. Two end faces of the two magnetic core components close to each other are both convexly provided with two groups of magnetic flux components. Each group of magnetic flux components includes two magnetic flux protrusions, and the magnetic flux protrusions respectively cooperate with the corresponding magnetic flux protrusions to form a resonating inductor middle leg or a main transformer middle leg.

[0007] Preferably, an air gap is maintained between the magnetic flux protrusion and the corresponding magnetic flux protrusion. The air gap is arranged in the middle of the primary inductor group and is located at a position far from the secondary inductor group.

[0008] When the present invention works, a symmetrically arranged magnetic core body is adopted, 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 phenomenon, effectively improve the linearity and stability of the main transformer. At the same time, the secondary inductor group is far 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 transfer efficiency of the main transformer.

[0009] Preferably, limiting protrusions are convexly provided at both edge positions of one end face of the two magnetic core components close to each other. The limiting protrusions extend along the connection direction of the two magnetic flux protrusions in the magnetic flux component. Both groups of magnetic flux components are arranged between the two limiting protrusions, and the limiting protrusions are in mutual contact with the corresponding limiting protrusions when the magnetic core components are buckled.

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

[0011] Preferably, it further includes a fixed base. The shape of the magnetic core component is set to be flat. The magnetic core body is installed on the fixed base, and the wiring parts of the primary inductor group and the secondary inductor group are both led out through the fixed base.

[0012] When the present invention works, the magnetic core body formed by buckling flat magnetic core components has a compact structure, high mechanical strength, a large heat dissipation area, uniform temperature distribution, good heat dissipation performance, and at the same time reduces the distance between windings and leakage inductance, and is applicable to 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 middle column of the main transformer. The first copper bar and the third copper bar are arranged at intervals at both ends of the primary inductor group. The first end of the first copper bar is led out through a corresponding on-off component and connected to the first end of the third copper bar. The second ends of the first copper bar and the third copper bar are both led out by means of a center tap.

[0015] Preferably, the secondary inductor group further 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 middle column of the main transformer. 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 on-off component and connected to the first end of the fourth copper bar. The second ends of the second copper bar and the fourth copper bar are both led out by means of a center tap.

[0016] When the present invention works, through the mutual cooperation of the first copper bar, the second copper bar, the third copper bar and the fourth copper bar, a positive and negative symmetric voltage output can be realized, and the applicable range is wide. 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 the heat dissipation efficiency, thereby further improving the stability of the main transformer.

[0017] Preferably, the end faces of the middle column of the resonant inductor and the middle column of the main transformer that are far away from each other are both set as convex arc surface shapes matching the shapes of the primary inductor group or the secondary inductor group. The other end face of the middle column of the resonant inductor is set as a concave arc surface shape matching the shape of the secondary inductor group. The other end face of the middle column of the main transformer is set as a convex arc surface shape matching the shape of the secondary inductor group.

[0018] The beneficial technical effects of the present invention include:

[0019] 1. In the present invention, the first primary winding and the second primary winding arranged in series enable the magnetic fluxes of the two sets of middle leg groups to be opposite in direction, which can maximize the utilization of residual magnetism, reduce hysteresis loss, maximize the magnetic flux density of the middle legs, thereby improving the overall efficiency of the main transformer. At the same time, a middle leg group including a resonating inductor middle leg and a main transformer middle leg arranged at intervals is adopted, so that the primary inductor group wound around the middle leg group can realize the series connection of the leakage inductance of the main transformer and the resonating inductance. While simplifying the circuit design, it can maximize the utilization of parasitic parameters, contribute to improving the quality factor of the resonating circuit, further improve the transfer efficiency of the main transformer, and reduce energy loss.

[0020] 2. The present invention adopts a symmetrically arranged magnetic core body with an air gap arranged in the middle position, which can optimize the magnetic flux path distribution of the main transformer, reduce the occurrence of local saturation phenomenon, effectively improve the linearity and stability of the main transformer. At the same time, the secondary inductor group is far 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 transfer efficiency of the main transformer.

[0021] 3. The magnetic core body of the present invention is formed by buckling flat 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, reduces leakage inductance, and is suitable for high-power and high-frequency working scenarios.

[0022] 4. Through the mutual cooperation of the first copper bar, the second copper bar, the third copper bar, and the fourth copper bar, the present invention can achieve positive and negative symmetric voltage output, with 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, improve the heat dissipation efficiency, and further improve the stability of the main transformer.

[0023] 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

[0024] The following further describes the present invention with reference to the drawings:

[0025] Figure 1 It is an exploded view of a main transformer with synchronous integration of windings and magnetic core for suppressing magnetic circuit cancellation;

[0026] Figure 2 It is a cross-sectional view of a main transformer with synchronous integration of windings and magnetic core for suppressing magnetic circuit cancellation;

[0027] Figure 3 It is a working state wiring diagram of a main transformer with synchronous integration of windings and magnetic core for suppressing magnetic circuit cancellation;

[0028] Figure 4Schematic diagram of magnetic circuit simulation of the main transformer with synchronous integration of windings and magnetic core for suppressing magnetic circuit cancellation;

[0029] Figure 5 Schematic diagram of loss simulation of the main transformer with synchronous integration of windings and magnetic core for suppressing magnetic circuit cancellation

[0030] Figure 6 Schematic diagram of the structure of a multi - layer stacked transformer skeleton. Specific implementation mode

[0031] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings of the embodiments of the present invention. However, the following embodiments are only the preferred embodiments of the present invention, not all of them. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present invention.

[0032] In the following description, terms such as "inner", "outer", "upper", "lower", "left", "right", etc. indicating orientation or position relationship are only for the convenience of describing the embodiments and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. Embodiment 1:

[0033] Please refer to Figure 1 , this embodiment discloses a main transformer with synchronous integration of windings and magnetic core for suppressing magnetic circuit cancellation, including a magnetic core body 1, a primary inductor group 2 and a secondary inductor group 3, which will be described in detail below with reference to the accompanying drawings.

[0034] Please refer to Figures 1 to 5 , in this embodiment, the primary inductor group 2 includes a first primary winding 21 and a second primary winding 22 arranged in series. There are two groups of middle column groups arranged at intervals inside the magnetic core body 1. The first primary winding 21 and the second primary winding 22 are respectively wound around the two groups of middle column groups, and the magnetic fluxes of the two groups of middle column groups are kept in opposite directions. The middle column group includes a resonant inductor middle column 111 and a main transformer middle column 112 arranged at intervals. There are two secondary inductor groups 3, and the two secondary inductor groups 3 are respectively wound around their corresponding main transformer middle columns 112.

[0035] When this embodiment works, the first primary winding 21 and the second primary winding 22 arranged in series make the magnetic fluxes of the two groups of middle column groups keep in opposite directions. Please refer to Figure 4 , Figure 4It is a schematic diagram of magnetic circuit simulation for this embodiment. Among them, the magnetic field intensity is the largest at the positions of the two middle column groups, the magnetic flux distribution is concentrated, and the magnetic flux leakage of the overall main transformer is less. It can make the most of the remanence, reduce the hysteresis loss, maximize the utilization of the magnetic density of the middle column, thereby improving the overall efficiency of the main transformer. At the same time, a middle column group including the resonant inductor middle column 111 and the main transformer middle column 112 arranged at intervals is adopted, so that the primary inductor group 2 can be wound around the middle column group to realize the series connection of the leakage inductance of the main transformer and the resonant inductance. While simplifying the circuit design, it can make the most efficient use of parasitic parameters, help improve the quality factor of the resonant circuit, further improve the transfer efficiency of the main transformer, and reduce energy loss. Please refer to Figure 5 and Table 1 below, Figure 5 It is a schematic diagram of loss simulation for this embodiment. Among them, the horizontal axis of the chart is time, with the unit of microsecond, and the vertical axis of the chart is power loss, with the unit of watt. The red curve in the chart is the core loss, indicating the energy loss in the magnetic core material. The green curve is the solid loss, indicating the conductor loss in the winding. The blue curve is the harness loss, indicating the additional loss generated when multiple strands of wire are stranded. The orange curve is the AC harness loss, indicating the loss generated by the harness under AC conditions. According to the simulation results, at an output power of 2190W, the loss is 22.46W, and the calculated comprehensive efficiency is 98.98%, which has a significant improvement compared with the maximum efficiency of 96% in the existing technical solution.

[0036] Table 1 Loss Simulation Table

[0037]

[0038] In specific implementation, the magnetic core body 1 includes two mutually buckled magnetic core components 12. Both end faces of the two magnetic core components 12 that are close to each other are convexly provided with two groups of magnetic flux components. Each group of magnetic flux components includes two magnetic flux protrusions 13. The magnetic flux protrusions 13 cooperate with the corresponding magnetic flux protrusions 13 respectively to form the resonant inductor middle column 111 or the main transformer middle column 112.

[0039] When this embodiment works, the symmetrically arranged magnetic core body 1 is adopted, 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 phenomenon, effectively improve the linearity and stability of the main transformer. At the same time, the secondary inductor group 3 is far 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 transfer efficiency of the main transformer.

[0040] Preferably, in order to further reduce magnetic flux leakage, limiting protrusions 14 are provided on both sides of the edges of the end faces of the two magnetic core assemblies 12 close to each other. The limiting protrusions 14 extend along the connection direction of the two magnetic flux protrusions 13 in the magnetic flux assembly. Both groups of magnetic flux assemblies are arranged between the two limiting protrusions 14. When the magnetic core assemblies 12 are buckled, the limiting protrusions 14 are in contact with the corresponding limiting protrusions 14. At the same time, wrapping flanges 15 are convexly provided on both sides of the inner end face of the limiting protrusions 14. The wrapping flanges 15 are arranged on the periphery of the magnetic flux assembly, with high structural strength and good heat dissipation effect. In specific implementation, a fixed base 4 is further included. The shape of the magnetic core assembly 12 is set as a flat plate. The magnetic core body 1 is installed on the fixed base 4. The wiring parts of the primary inductance group 2 and the secondary inductance group 3 are both led out through the fixed base 4.

[0041] When this embodiment works, the magnetic core body 1 formed by buckling the flat magnetic core assemblies 12 has a compact structure, high mechanical strength, a large heat dissipation area, uniform temperature distribution, good heat dissipation performance, and at the same time reduces the distance between windings, reduces leakage inductance, and is suitable for high-power and high-frequency working scenarios. Embodiment 2:

[0042] Please refer to Figure 1 , this embodiment provides a main transformer with synchronous integration of windings and magnetic cores that suppresses magnetic circuit cancellation. The same parts as those in Embodiment 1 will not be described in detail. The differences will be described in detail below with reference to the drawings.

[0043] Please refer to Figure 2 and Figure 3 , in this embodiment, the two secondary inductance groups 3 are arranged in parallel, which can better distribute the load and improve the overall efficiency of the main transformer.

[0044] Preferably, an air gap is maintained between the corresponding magnetic flux protrusions 13. The air gap is arranged in the middle of the primary inductor group 2 and is located at a position far from the secondary inductor group 3. In a specific implementation, the secondary inductor group 3 includes a first copper bar 31 and a third copper bar 33. Both the first copper bar 31 and the third copper bar 33 are 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 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. The second ends of the first copper bar 31 and the third copper bar 33 are both led out by means of a center tap. In order to achieve a positive and negative symmetric voltage output, the secondary inductor group 3 further includes a second copper bar 32 and a fourth copper bar 34. Both the second copper bar 32 and the fourth copper bar 34 are 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. The second ends of the second copper bar 32 and 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 transistor. The second ends of the first copper bar 31, the third copper bar 33, the second copper bar 32, and the fourth copper bar 34 serve as common pins and are for one-way output. The first end of the first copper bar 31 is connected to the first end of the third copper bar 33 through a field effect transistor and serves as one polarity output of another way of output. The first end of the second copper bar 32 is connected to the first end of the third copper bar 33 through a field effect transistor and serves as the other polarity output of another way of output.

[0045] When this embodiment works, 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, a positive and negative symmetric voltage output can be achieved, with a wide range of applications. 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 and improve the heat dissipation efficiency, thereby further improving the stability of the main transformer.

[0046] As a further improvement of this embodiment, the end faces of the resonant inductor middle column 111 and the main transformer middle column 112 that are far from each other are both set as convex arc-shaped 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 middle column 111 is set as a concave arc-shaped surface that matches the shape of the secondary inductor group 3. The other end face of the main transformer middle column 112 is set as a convex arc-shaped surface that matches the shape of the secondary inductor group 3, which is convenient for winding the primary inductor group 2 and the secondary inductor group 3, reduces the assembly difficulty, and can improve the production efficiency.

[0047] In 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. The cross-sectional area of the main transformer middle leg 112 is calculated using the following formula:

[0048] ;

[0049] Where: is the cross-sectional area of the main transformer middle leg 112;

[0050] is the input voltage;

[0051] is the maximum duty cycle;

[0052] is the number of turns of the primary inductor group 2;

[0053] is the maximum magnetic flux density;

[0054] is the switching frequency;

[0055] The cross-sectional area of the resonant inductor middle leg 111 is calculated using the following formula:

[0056] ;

[0057] Where: is the cross-sectional area of the resonant inductor middle leg 111;

[0058] is the resonant inductor;

[0059] is the effective value of the resonant current;

[0060] is the number of turns of the secondary inductor group 3;

[0061] is the resonant magnetic density;

[0062] is the resonant frequency;

[0063] At the same time, correct the cross-sectional area of the resonant inductor middle leg 111, and judge whether it is within the range of , where m is the cross-sectional area ratio, and during operation, it is generally set to 0.33 to 0.50. When it is not within this range, re-determine the cross-sectional area of the resonant inductor middle leg 111, and at the same time, recalculate the magnetic flux density of the resonant inductor middle leg 111 to make it lower than the maximum magnetic flux density;

[0064] The spacing between the two groups of magnetic flux components, as well as the spacing between the main transformer middle leg 112 and the resonant inductor middle leg 111, are calculated using the following formula:

[0065] ;

[0066] ;

[0067] 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;

[0068] 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:

[0069] ;

[0070] ;

[0071] 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;

[0072] is the vacuum permeability;

[0073] is the magnetic permeability of the core body 1;

[0074] is the magnetic path length of the main transformer center column 112;

[0075] 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.

[0076] The beneficial technical effects of this embodiment include: In the present invention, the first primary winding and the second primary winding arranged in series enable the magnetic fluxes of the two sets of middle column groups to remain in opposite directions, which can maximize the utilization of residual magnetism, reduce hysteresis loss, and maximize the utilization of the magnetic density of the middle column, thereby improving the overall efficiency of the main transformer. At the same time, the middle column group including the resonating inductor middle column and the main transformer middle column arranged at intervals is adopted, so that the primary inductor group wound on the middle column group can achieve the series connection of the leakage inductance of the main transformer and the resonating inductance. While simplifying the circuit design, it can maximize the utilization of parasitic parameters, contribute to improving the quality factor of the resonating circuit, further improve the transfer efficiency of the main transformer, and reduce energy loss.

[0077] The above is only the specific implementation manner 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 content described in the drawings and the above specific implementation manner. 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 a winding integrated synchronously with a magnetic core that suppresses magnetic circuit cancellation, characterized in that: It includes a magnetic core body (1), a primary inductor group (2) and a secondary inductor group (3). The primary inductor group (2) includes a first primary winding (21) and a second primary winding (22) arranged in series. There are two sets of middle column groups arranged at intervals inside the magnetic core body (1). The first primary winding (21) and the second primary winding (22) are respectively wound around the two sets of middle column groups, and the magnetic fluxes of the two sets of middle column groups are kept in opposite directions. The middle column group includes a resonant inductor middle column (111) and a main transformer middle column (112) arranged at intervals. There are two secondary inductor groups (3), and the two secondary inductor groups (3) are respectively wound around the corresponding main transformer middle columns (112). The magnetic core body (1) includes two mutually buckled magnetic core components (12). Two end faces of the two magnetic core components (12) close to each other are both convexly provided with two sets of magnetic flux components. Each set of magnetic flux components includes two magnetic flux protrusions (13). The magnetic flux protrusions (13) cooperate with the corresponding magnetic flux protrusions (13) respectively to form a resonant inductor middle column (111) or a main transformer middle column (112). An air gap is maintained between the magnetic flux protrusion (13) and the corresponding magnetic flux protrusion (13). The air gap is arranged in the middle of the primary inductor group (2) and is located at a position far from the secondary inductor group (3). Limit protrusions (14) are convexly provided at both edge positions on both sides of the end face of the two magnetic core components (12) close to each other. The limit protrusions (14) extend along the connection line direction of the two magnetic flux protrusions (13) inside the magnetic flux component. Both sets of magnetic flux components are arranged between the two limit protrusions (14). The limit protrusions (14) are in mutual contact with the corresponding limit protrusions (14) when the magnetic core components (12) are buckled. Wrapping flanges (15) are convexly provided inwardly on both sides of the inner end face of the limit protrusion (14). The wrapping flanges (15) are arranged on the periphery of the magnetic flux component.

2. The main transformer with synchronous integration of windings and magnetic cores having suppression of magnetic circuit cancellation according to claim 1, characterized in that: It further includes a fixed base (4). The shape of the magnetic core component (12) is set as a flat plate. The magnetic core body (1) is installed on the fixed base (4). The wiring parts of the primary inductor group (2) and the secondary inductor group (3) are both led out through the fixed base (4).

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

4. The main transformer with synchronous integration of a winding and a magnetic core having suppression of magnetic circuit cancellation according to claim 1, characterized in that: The secondary inductor group (3) includes 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 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 inductor group (2). The first end of the first copper bar (31) is led out through a corresponding on-off component and is connected to the first end of the third copper bar (33). The second ends of the first copper bar (31) and the third copper bar (33) are both led out in a center-tapped manner.

5. The main transformer with synchronous integration of winding and magnetic core having suppression of magnetic circuit cancellation according to claim 4, wherein: The secondary side inductor group (3) further 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 side 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). The second ends of the second copper bar (32) and the fourth copper bar (34) are both led out in a center tap manner.

6. The main transformer with synchronous integration of a winding and a magnetic core having suppression of magnetic circuit cancellation according to claim 1, characterized in that: One end face of the resonant inductor middle column (111) and the main transformer middle column (112) that are far away from each other are both set to be in the shape of a convex arc surface that matches the shape of the primary side inductor group (2) or the secondary side inductor group (3). The other end face of the resonant inductor middle column (111) is set to be in the shape of a concave arc surface that matches the shape of the secondary side inductor group (3). The other end face of the main transformer middle column (112) is set to be in the shape of a convex arc surface that matches the shape of the secondary side inductor group (3).

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