CN115800776B - AC/DC conversion system of planar transformer based on new high-magnetic material - Google Patents
AC/DC conversion system of planar transformer based on new high-magnetic material Download PDFInfo
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Abstract
The invention relates to an alternating current-direct current conversion system of a planar transformer based on a new high-magnetic material, which relates to the technical field of planar transformers.
Description
Technical Field
The invention relates to the technical field of planar transformers, in particular to an alternating current-direct current conversion system of a planar transformer based on a new high-magnetic material.
Background
The planar transformer is used as a voltage transformation device applied to small-sized devices, has the characteristics of low modeling, small height, high working efficiency and the like, and has the defects in the process of performing alternating current-direct current conversion, such as the proximity effect and the skin effect of current caused by the ultrahigh frequency of the planar transformer and the surge phenomenon caused by abrupt voltage and current in the voltage transformation process.
Chinese patent publication No.: CN108335879a discloses a planar transformer, an electronic device and a method for manufacturing the planar transformer. The planar transformer comprises a first magnetic core, at least one PCB winding, at least one flat coil and a second magnetic core, wherein each PCB winding in the first magnetic core and the at least one PCB winding, and each flat coil in the at least one flat coil and the second magnetic core are assembled coaxially to form the planar transformer. On the one hand, the PCB winding and the flat coil are adopted as the primary/secondary coil, so that the winding coil has stronger overcurrent capability compared with the traditional winding coil. On the other hand, when the primary/secondary coil with more turns is required to be designed, the number of turns of the flat coil can be increased/decreased transversely, so that the flat coil can relatively avoid the need of assembling a plurality of layers of primary/secondary coils, thereby reducing the proximity effect and parasitic capacitance, improving the power density and reducing the temperature rise; therefore, the planar transformer has the problem that the transformation process of the planar transformer cannot be accurately controlled, so that the transformation efficiency of the planar transformer is low.
Disclosure of Invention
Therefore, the invention provides an alternating current-direct current conversion system of a planar transformer based on a new high-magnetic material, which is used for solving the problem that the transformation efficiency of the planar transformer is low because the transformation process of the planar transformer cannot be accurately controlled in the prior art.
In order to achieve the above object, the present invention provides an ac/dc conversion system of a planar transformer based on a new high magnetic material, comprising:
the device comprises a data acquisition module, a voltage acquisition module and a surge parameter acquisition unit, wherein the data acquisition module comprises a current acquisition unit for acquiring an input current monitored by a current sensor arranged at an input end of a planar transformer under a first preset condition, a voltage acquisition unit for acquiring an output voltage monitored by a voltage sensor arranged at an output end of the planar transformer, and a surge parameter acquisition unit for acquiring a surge current and a pulse frequency of a surge protector arranged at the front end of the planar transformer, wherein the surge current and the pulse frequency are acquired under a non-first preset condition;
the historical data storage module is used for storing historical pulse frequency data of the surge protector and historical rectification data of the rectifier when the planar transformer is in AC-DC conversion;
the data analysis module is connected with the data acquisition module, and comprises a surge analysis unit used for judging whether the planar transformer has a surge phenomenon during AC-DC conversion according to the comparison result of the input current and the surge current, a rectification determination unit connected with the surge analysis unit and used for judging whether the output current of the planar transformer is rectified or not, a voltage change amount of the output voltage in a preset time period under a second preset condition and used for judging the voltage change amount of the planar transformer in a preset time period, and a data adjustment unit respectively connected with the rectification determination unit and the voltage change analysis unit and used for adjusting the output current determined by the rectification determination unit according to the analysis result of the voltage change analysis unit;
the control execution module comprises a first control execution unit which is connected with the rectification determination unit and used for controlling the rectifier to rectify according to the output current determined by the rectification determination unit, and a second control execution unit which is connected with the transformation analysis unit and used for controlling the rectifier and the surge protector to adjust parameters of the plane transformation in the AC/DC conversion according to the adjustment mode determined by the data adjustment unit.
The new high-magnetic material is a high-magnetic-conductivity material, and particularly is a ferromagnetic material with magnetic conductivity more than about the power of 10 to 2. Also known as soft magnetic materials. The material has high magnetic conductivity, high saturation magnetic induction intensity, high resistance, low loss and good stability.
Further, a pulse frequency standard Q0 of a surge phenomenon is arranged in the surge parameter acquisition unit, the surge parameter acquisition unit determines whether the planar transformer reaches a first preset condition during AC/DC conversion according to the comparison result of the pulse frequency Q of the surge protector arranged at the front end of the planar transformer and the pulse frequency standard Q0,
if Q is more than or equal to Q0, the surge parameter acquisition unit determines that the planar transformer reaches a first preset condition during AC-DC conversion;
if Q is smaller than Q0, the surge parameter acquisition unit determines that the planar transformer does not reach a first preset condition during AC-DC conversion.
Further, a current difference standard C0 is arranged in the surge analysis unit, the surge analysis unit judges the comparison result of the current difference C of the input current I1 and the surge current I0 and the current difference standard to determine whether the planar transformer has a surge phenomenon during AC-DC conversion, C=I0-I1 is set,
if C is more than or equal to C0, the surge analysis unit determines that the planar transformer has a surge phenomenon during AC-DC conversion;
if C is smaller than C0, the surge analysis unit determines that the planar transformer has no surge phenomenon during AC-DC conversion.
Further, the rectification determination unit determines to rectify the output current of the planar transformer under the condition that the planar transformer has a surge phenomenon during AC/DC conversion according to the surge analysis unit, calculates the percentage R of the current difference C and the preset power difference C0 at the same time, compares and judges R with a first percentage standard R1 and a second percentage standard R2 in the rectification determination unit to determine a current adjustment coefficient of the rectifier for rectifying the output current, sets R1 to be less than R2,
if R is less than or equal to R1, the rectification determining unit determines that the adjustment coefficient of the output current rectification is K1;
if R1 is more than R and less than or equal to R2, the rectification determining unit determines that the adjustment coefficient of the output current rectification is K2;
if R is more than R2, the rectification determining unit determines that the adjustment coefficient of the rectification of the output current is K3;
wherein, R=C/C0×100%,0.8 < K3 < K2 < K1 < 1.
Further, a preset voltage variation delta U0 is arranged in the transformation analysis unit, the transformation analysis unit determines the voltage variation delta U of the output voltage in a preset time t under a second preset condition, and determines a comparison result of the voltage variation delta U and the preset voltage variation delta U0 to determine whether transformation stability of the planar transformer in AC-DC conversion meets a standard or not,
if DeltaU is larger than DeltaU 0, the transformation analysis unit determines that the transformation stability does not meet the standard, and the data adjustment unit determines an average adjustment coefficient Kp of output current rectification in the historical rectification data so as to determine an adjustment mode of the planar transformer during AC-DC conversion;
and if the delta U is less than or equal to delta U0, the transformation analysis unit determines that the transformation stability meets the standard.
In the embodiment of the present invention, the preset time period t in the embodiment of the present invention may be flexibly set according to the actual needs of those skilled in the art, which is not limited by the present invention.
Further, the transformation analysis unit is also provided with a history pulse frequency average value standard Yj, and the transformation analysis unit compares the history pulse frequency average value Y with the history pulse frequency average value standard Yj to judge whether the planar transformer meets a second preset condition during AC/DC conversion,
if Y is more than or equal to Yj, the transformation analysis unit determines that the planar transformer meets a second preset condition during AC-DC conversion;
if Y is less than Yj, the transformation analysis unit determines that the planar transformer does not meet a second preset condition during AC-DC conversion.
Further, a first average adjustment coefficient Kp1 and a second average adjustment coefficient Kp2 are arranged in the data adjustment unit, the data adjustment unit respectively compares the average adjustment coefficients Kp and Kp1 with Kp2 to determine the adjustment mode, kp1 is less than Kp2,
if Kp is less than or equal to Kp1, the data adjustment unit determines not to adjust the planar transformer in AC-DC conversion;
if Kp1 is more than Kp and less than or equal to Kp2, the data adjusting unit determines that the adjusting mode of the planar transformer in AC-DC conversion is to adjust the current of the output end;
if Kp is larger than Kp2, the data adjusting unit determines that the adjusting mode of the planar transformer during AC/DC conversion is to adjust the input terminal voltage.
Further, the data adjustment unit determines to adjust the output current to a corresponding value according to a comparison result of a first ratio Ba of the average adjustment coefficients Kp and Kp1 and a preset ratio, wherein the preset ratio includes a first preset ratio B1 and a second preset ratio B2, B1 < B2 is set and ba=kp/Kp 1,
if Ba is less than or equal to B1, the data adjustment unit adjusts the output terminal current to Ij, ij=i1×e1;
if B1 is less than Ba and less than or equal to B2, the data adjustment unit adjusts the output end current to Ij, and ij=i1×e2 is set;
if Ba > B2, the data adjustment unit adjusts the output current to Ij, and sets ij=i1×e3;
wherein e1 is a first current adjustment coefficient, e2 is a second current adjustment coefficient, e3 is a third current adjustment coefficient, and 0.7 < e3 < e2 < e1 < 1 is set.
Further, the data adjustment unit determines to adjust the input terminal voltage to a corresponding value according to a comparison result of the second ratio Bb of the average adjustment coefficients Kp and Kp2 and a preset ratio, sets bb=kp/Kp 2,
if Bb is less than or equal to B1, the data adjustment unit adjusts the input terminal voltage to Uj, uj=uxf1;
if B1 is smaller than Bb and smaller than or equal to B2, the data adjustment unit adjusts the input terminal voltage to Uj, and uj=uxf2 is set;
if Bb > B2, the data adjustment unit adjusts the input terminal voltage to Uj, setting uj=uxf3;
wherein f1 is a first voltage adjustment coefficient, f2 is a second voltage adjustment coefficient, f3 is a third voltage adjustment coefficient, and e1 is more than 1 and less than 2 and e3 is more than 1.2.
Further, the first control execution unit sends an instruction to the rectifier to cause the rectifier to adjust the output current to i1×ki by the adjustment coefficient, setting i=1, 2,3; the second control execution unit sends instructions to the rectifier to cause the rectifier to adjust the output current to Ij or to the surge protector to cause the surge protector to adjust the input voltage to Uj.
Compared with the prior art, the invention has the beneficial effects that the data acquisition module for acquiring the current and voltage data of the planar transformer, the data analysis module for analyzing the current and voltage data acquired by the data acquisition module and the control execution module for controlling the planar transformer to transform according to the analysis result of the data analysis module are arranged in the planar transformer, and whether the current output by the transformer after transformation reaches the standard or not is determined according to the current difference value of the two currents, so that the accuracy of the control of the transformation process of the planar transformer is improved, and the transformation efficiency of the planar transformer is further improved.
Particularly, the historical storage module is arranged to store the historical pulse frequency data of the surge protector at the front end of the planar transformer and the historical rectification data of the rectifier at the rear end of the planar transformer, so that the historical surge phenomenon of the planar transformer is analyzed through the historical pulse data, the transformation parameters of the planar transformer during real-time AC-DC conversion are adjusted according to analysis results to ensure the stability of the planar transformer, and the accuracy of the transformation process control of the planar transformer is further improved, so that the transformation efficiency of the planar transformer is further improved.
Furthermore, the surge analysis unit of the data analysis module is provided with the pulse frequency standard of the surge phenomenon, so that the surge analysis unit determines the stability of the parameters of the planar transformer in the AC-DC conversion according to the comparison result of the pulse frequency of the surge protector and the pulse frequency standard, the accuracy of the control of the transformation process of the planar transformer is further improved, and the transformation efficiency of the planar transformer is further improved.
Furthermore, the invention sets the percentage standard in the rectification determining unit of the data analysis module so as to rectify the data current of the planar transformer when the planar transformer performs AC/DC conversion in real time and the surge phenomenon occurs, thereby ensuring the stability of the planar transformer when the planar transformer performs AC/DC conversion, further improving the accuracy of the control of the transformation process of the planar transformer and further improving the transformation efficiency of the planar transformer.
Drawings
FIG. 1 is a logic block diagram of an AC/DC conversion system of a planar transformer based on a new high-magnetic material according to an embodiment of the present invention;
FIG. 2 is a logic block diagram of a data acquisition module in an AC/DC conversion system of a planar transformer based on a new high-magnetic material according to an embodiment of the present invention;
FIG. 3 is a logic block diagram of a data analysis module in an AC/DC conversion system of a planar transformer based on a new high-magnetic material according to an embodiment of the present invention;
fig. 4 is a logic block diagram of a control execution module in the ac/dc conversion system of the planar transformer based on the new high-magnetic material according to the embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1-4, fig. 1 is a logic block diagram of an ac-dc conversion system of a planar transformer based on a new high-magnetic material according to an embodiment of the present invention; FIG. 2 is a logic block diagram of a data acquisition module in an AC/DC conversion system of a planar transformer based on a new high-magnetic material according to an embodiment of the present invention; FIG. 3 is a logic block diagram of a data analysis module in an AC/DC conversion system of a planar transformer based on a new high-magnetic material according to an embodiment of the present invention; fig. 4 is a logic block diagram of a control execution module in the ac/dc conversion system of the planar transformer based on the new high-magnetic material according to the embodiment of the present invention.
The embodiment of the invention discloses an alternating current-direct current conversion system of a planar transformer based on a new high-magnetic material, which comprises the following components:
the device comprises a data acquisition module, a voltage acquisition module and a surge parameter acquisition unit, wherein the data acquisition module comprises a current acquisition unit for acquiring an input current monitored by a current sensor arranged at an input end of a planar transformer under a first preset condition, a voltage acquisition unit for acquiring an output voltage monitored by a voltage sensor arranged at an output end of the planar transformer, and a surge current and pulse frequency acquisition unit for acquiring a surge current and a pulse frequency of a surge protector arranged at the front end of the planar transformer;
the historical data storage module is used for storing historical pulse frequency data of the surge protector and historical rectification data of the rectifier when the planar transformer is in AC-DC conversion;
the data analysis module is connected with the data acquisition module, and comprises a surge analysis unit used for judging whether the planar transformer has a surge phenomenon during AC-DC conversion according to the comparison result of the input current and the surge current, a rectification determination unit connected with the surge analysis unit and used for judging whether the output current of the planar transformer is rectified or not, a voltage change amount of the output voltage in a preset time period under a second preset condition and used for judging the voltage change amount of the planar transformer in a preset time period, and a data adjustment unit respectively connected with the rectification determination unit and the voltage change analysis unit and used for adjusting the output current determined by the rectification determination unit according to the analysis result of the voltage change analysis unit;
the control execution module comprises a first control execution unit which is connected with the rectification determination unit and used for controlling the rectifier to rectify according to the output current determined by the rectification determination unit, and a second control execution unit which is connected with the transformation analysis unit and used for controlling the rectifier and the surge protector to adjust parameters of the plane transformation in the AC/DC conversion according to the adjustment mode determined by the data adjustment unit.
The surge current and the pulse frequency are acquired under a non-first preset condition;
specifically, the surge parameter acquisition unit is provided with a pulse frequency standard Q0 of a surge phenomenon, the surge parameter acquisition unit determines whether the planar transformer reaches a first preset condition during AC-DC conversion according to the comparison result of the pulse frequency Q of the surge protector arranged at the front end of the planar transformer and the pulse frequency standard Q0,
if Q is more than or equal to Q0, the surge parameter acquisition unit determines that the planar transformer reaches a first preset condition during AC-DC conversion;
if Q is smaller than Q0, the surge parameter acquisition unit determines that the planar transformer does not reach a first preset condition during AC-DC conversion.
Specifically, a current difference standard C0 is arranged in the surge analysis unit, the surge analysis unit judges the comparison result of the current difference C of the input current I1 and the surge current I0 and the current difference standard to determine whether the planar transformer has a surge phenomenon during AC-DC conversion, C=I0-I1 is set,
if C is more than or equal to C0, the surge analysis unit determines that the planar transformer has a surge phenomenon during AC-DC conversion;
if C is smaller than C0, the surge analysis unit determines that the planar transformer has no surge phenomenon during AC-DC conversion.
Specifically, the rectification determining unit determines to rectify the output current of the planar transformer under the condition that the planar transformer has a surge phenomenon during AC/DC conversion according to the surge analyzing unit, calculates the percentage R of the current difference C and the preset power difference C0 at the same time, compares and judges R with a first percentage standard R1 and a second percentage standard R2 in the rectification determining unit to determine a current adjustment coefficient of the rectifier for rectifying the output current, sets R1 to be less than R2,
if R is less than or equal to R1, the rectification determining unit determines that the adjustment coefficient of the output current rectification is K1;
if R1 is more than R and less than or equal to R2, the rectification determining unit determines that the adjustment coefficient of the output current rectification is K2;
if R is more than R2, the rectification determining unit determines that the adjustment coefficient of the rectification of the output current is K3;
wherein, R=C/C0×100%,0.8 < K3 < K2 < K1 < 1.
Specifically, a preset voltage variation delta U0 is arranged in the transformation analysis unit, the transformation analysis unit determines the voltage variation delta U of the output voltage in a preset time t under a second preset condition, and determines a comparison result of the voltage variation delta U and the preset voltage variation delta U0 to determine whether transformation stability of the planar transformer in AC-DC conversion meets a standard or not,
if DeltaU is larger than DeltaU 0, the transformation analysis unit determines that the transformation stability does not meet the standard, and the data adjustment unit determines an average adjustment coefficient Kp of output current rectification in the historical rectification data so as to determine an adjustment mode of the planar transformer during AC-DC conversion;
and if the delta U is less than or equal to delta U0, the transformation analysis unit determines that the transformation stability meets the standard.
In the embodiment of the invention, the average adjustment coefficient is an average value of adjustment coefficients in a plurality of times of rectification in the historical rectification data.
In the embodiment of the invention, the voltage transformation amount is the fluctuation of the voltage of the output end of the planar transformer in the AC-DC conversion process.
Specifically, the transformation analysis unit is also provided with a history pulse frequency average value standard Yj, the transformation analysis unit compares the history pulse frequency average value Y with the history pulse frequency average value standard Yj to judge whether the planar transformer meets a second preset condition during AC/DC conversion,
if Y is more than or equal to Yj, the transformation analysis unit determines that the planar transformer meets a second preset condition during AC-DC conversion;
if Y is less than Yj, the transformation analysis unit determines that the planar transformer does not meet a second preset condition during AC-DC conversion.
In the embodiment of the invention, the average value of the historical pulse frequency is the average value of a plurality of historical pulse frequencies.
Specifically, the data adjustment unit is provided with a first average adjustment coefficient Kp1 and a second average adjustment coefficient Kp2, the data adjustment unit compares the average adjustment coefficients Kp and Kp1 with Kp2 respectively to determine the adjustment mode, and Kp1 is less than Kp2,
if Kp is less than or equal to Kp1, the data adjustment unit determines not to adjust the planar transformer in AC-DC conversion;
if Kp1 is more than Kp and less than or equal to Kp2, the data adjusting unit determines that the adjusting mode of the planar transformer in AC-DC conversion is to adjust the current of the output end;
if Kp is larger than Kp2, the data adjusting unit determines that the adjusting mode of the planar transformer during AC/DC conversion is to adjust the input terminal voltage.
Specifically, the data adjustment unit determines to adjust the output current to a corresponding value according to a comparison result of a first ratio Ba of the average adjustment coefficients Kp and Kp1 and a preset ratio B2, wherein the preset ratio includes a first preset ratio B1 and a second preset ratio B2, B1 is set to be less than B2 and ba=kp/Kp 1,
if Ba is less than or equal to B1, the data adjustment unit adjusts the output terminal current to Ij, ij=i1×e1;
if B1 is less than Ba and less than or equal to B2, the data adjustment unit adjusts the output end current to Ij, and ij=i1×e2 is set;
if Ba > B2, the data adjustment unit adjusts the output current to Ij, and sets ij=i1×e3;
wherein e1 is a first current adjustment coefficient, e2 is a second current adjustment coefficient, e3 is a third current adjustment coefficient, and 0.7 < e3 < e2 < e1 < 1 is set.
Specifically, the data adjustment unit determines to adjust the input terminal voltage to a corresponding value according to the comparison result of the second ratio Bb of the average adjustment coefficients Kp and Kp2 and a preset ratio, sets bb=kp/Kp 2,
if Bb is less than or equal to B1, the data adjustment unit adjusts the input terminal voltage to Uj, uj=uxf1;
if B1 is smaller than Bb and smaller than or equal to B2, the data adjustment unit adjusts the input terminal voltage to Uj, and uj=uxf2 is set;
if Bb > B2, the data adjustment unit adjusts the input terminal voltage to Uj, setting uj=uxf3;
wherein f1 is a first voltage adjustment coefficient, f2 is a second voltage adjustment coefficient, f3 is a third voltage adjustment coefficient, and e1 is more than 1 and less than 2 and e3 is more than 1.2.
Specifically, the first control execution unit sends an instruction to the rectifier to cause the rectifier to adjust the output current to i1×ki by the adjustment coefficient, setting i=1, 2,3; the second control execution unit sends instructions to the rectifier to cause the rectifier to adjust the output current to Ij or to the surge protector to cause the surge protector to adjust the input voltage to Uj.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An ac-dc conversion system of a planar transformer based on a new high magnetic material, characterized in that it comprises:
the device comprises a data acquisition module, a voltage acquisition module and a surge parameter acquisition unit, wherein the data acquisition module comprises a current acquisition unit for acquiring an input current monitored by a current sensor arranged at an input end of a planar transformer under a first preset condition, a voltage acquisition unit for acquiring an output voltage monitored by a voltage sensor arranged at an output end of the planar transformer, and a surge current and pulse frequency acquisition unit for acquiring a surge current and a pulse frequency of a surge protector arranged at the front end of the planar transformer;
the historical data storage module is used for storing historical pulse frequency data of the surge protector and historical rectification data of the rectifier when the planar transformer is in AC-DC conversion;
the data analysis module is connected with the data acquisition module, and comprises a surge analysis unit used for judging whether the planar transformer has a surge phenomenon during AC-DC conversion according to the comparison result of the input current and the surge current, a rectification determination unit connected with the surge analysis unit and used for judging whether the output current of the planar transformer is rectified or not, a voltage change amount of the output voltage in a preset time period under a second preset condition and used for judging the voltage change amount of the planar transformer in a preset time period, and a data adjustment unit respectively connected with the rectification determination unit and the voltage change analysis unit and used for adjusting the output current determined by the rectification determination unit according to the analysis result of the voltage change analysis unit;
the control execution module comprises a first control execution unit which is connected with the rectification determination unit and used for controlling the rectifier to rectify according to the output current determined by the rectification determination unit, and a second control execution unit which is connected with the transformation analysis unit and used for controlling the rectifier and the surge protector to adjust parameters of the plane transformation in the AC/DC conversion according to the adjustment mode determined by the data adjustment unit.
2. The ac/dc conversion system of planar transformer based on new high-magnetism material according to claim 1, wherein the surge parameter acquisition unit is provided with a pulse frequency standard Q0 of a surge phenomenon, and the surge parameter acquisition unit determines whether the planar transformer reaches a first preset condition during ac/dc conversion according to a comparison result of the pulse frequency Q of a surge protector arranged at the front end of the planar transformer and the pulse frequency standard Q0,
if Q is more than or equal to Q0, the surge parameter acquisition unit determines that the planar transformer reaches a first preset condition during AC-DC conversion;
if Q is smaller than Q0, the surge parameter acquisition unit determines that the planar transformer does not reach a first preset condition during AC-DC conversion.
3. The ac/dc conversion system of a planar transformer based on a new high-magnetic material according to claim 2, wherein a current difference standard C0 is set in the surge analysis unit, the surge analysis unit determines a comparison result of the current difference C and the current difference standard of the input current I1 and the surge current I0 to determine whether the planar transformer has a surge phenomenon during ac/dc conversion, sets c=i0-I1,
if C is more than or equal to C0, the surge analysis unit determines that the planar transformer has a surge phenomenon during AC-DC conversion;
if C is smaller than C0, the surge analysis unit determines that the planar transformer has no surge phenomenon during AC-DC conversion.
4. The ac/dc conversion system of a planar transformer based on a new high-magnetic material according to claim 3, wherein the rectification determination unit determines to rectify the output current of the planar transformer under a surge condition in which the planar transformer is subjected to ac/dc conversion according to the surge analysis unit, calculates a percentage R of the current difference C and a preset power difference C0 at the same time, and compares R with a first percentage criterion R1 and a second percentage criterion R2 in the rectification determination unit to determine a current adjustment coefficient by which the rectifier rectifies the output current, sets R1 < R2,
if R is less than or equal to R1, the rectification determining unit determines that the adjustment coefficient of the output current rectification is K1;
if R1 is more than R and less than or equal to R2, the rectification determining unit determines that the adjustment coefficient of the output current rectification is K2;
if R is more than R2, the rectification determining unit determines that the adjustment coefficient of the rectification of the output current is K3;
wherein, R=C/C0×100%,0.8 < K3 < K2 < K1 < 1.
5. The ac/dc conversion system of claim 4, wherein a predetermined voltage variation Δu0 is provided in the transformation analysis unit, the transformation analysis unit determines the voltage variation Δu of the output voltage for a predetermined period t under a second predetermined condition, and determines a comparison result of the voltage variation Δu and the predetermined voltage variation Δu0 to determine whether the transformation stability of the planar transformer during ac/dc conversion meets a standard,
if DeltaU is larger than DeltaU 0, the transformation analysis unit determines that the transformation stability does not meet the standard, and the data adjustment unit determines an average adjustment coefficient Kp of output current rectification in the historical rectification data so as to determine an adjustment mode of the planar transformer during AC-DC conversion;
and if the delta U is less than or equal to delta U0, the transformation analysis unit determines that the transformation stability meets the standard.
6. The ac/dc conversion system of claim 5, wherein said transformation analysis unit further comprises a history pulse frequency average value standard Yj, said transformation analysis unit compares said history pulse frequency average value Y with said history pulse frequency average value standard Yj to determine whether said planar transformer meets a second preset condition during ac/dc conversion,
if Y is more than or equal to Yj, the transformation analysis unit determines that the planar transformer meets a second preset condition during AC-DC conversion;
if Y is less than Yj, the transformation analysis unit determines that the planar transformer does not meet a second preset condition during AC-DC conversion.
7. The ac/dc conversion system of planar transformer based on new high-magnetic material as claimed in claim 5, wherein a first average adjustment coefficient Kp1 and a second average adjustment coefficient Kp2 are provided in the data adjustment unit, the data adjustment unit compares the average adjustment coefficients Kp and Kp1 and Kp2 to determine the adjustment mode, and Kp1 < Kp2 is set,
if Kp is less than or equal to Kp1, the data adjustment unit determines not to adjust the planar transformer in AC-DC conversion;
if Kp1 is more than Kp and less than or equal to Kp2, the data adjusting unit determines that the adjusting mode of the planar transformer in AC-DC conversion is to adjust the current of the output end;
if Kp is larger than Kp2, the data adjusting unit determines that the adjusting mode of the planar transformer during AC/DC conversion is to adjust the input terminal voltage.
8. The ac/dc conversion system of claim 7, wherein the data adjustment unit determines to adjust the output current to a corresponding value according to a comparison result of a first ratio Ba of the average adjustment coefficients Kp and Kp1 and a preset ratio, wherein the preset ratio includes a first preset ratio B1 and a second preset ratio B2, B1 < B2 is set and ba=kp/Kp 1,
if Ba is less than or equal to B1, the data adjustment unit adjusts the output terminal current to Ij, ij=i1×e1;
if B1 is less than Ba and less than or equal to B2, the data adjustment unit adjusts the output end current to Ij, and ij=i1×e2 is set;
if Ba > B2, the data adjustment unit adjusts the output current to Ij, and sets ij=i1×e3;
wherein e1 is a first current adjustment coefficient, e2 is a second current adjustment coefficient, e3 is a third current adjustment coefficient, and 0.7 < e3 < e2 < e1 < 1 is set.
9. The ac/dc conversion system of claim 7, wherein the data adjustment unit determines to adjust the input terminal voltage to a corresponding value according to a comparison result of the second ratio Bb of the average adjustment coefficients Kp and Kp2 and a preset ratio, sets bb=kp/Kp 2,
if Bb is less than or equal to B1, the data adjustment unit adjusts the input terminal voltage to Uj, uj=uxf1;
if B1 is smaller than Bb and smaller than or equal to B2, the data adjustment unit adjusts the input terminal voltage to Uj, and uj=uxf2 is set;
if Bb > B2, the data adjustment unit adjusts the input terminal voltage to Uj, setting uj=uxf3;
wherein f1 is a first voltage adjustment coefficient, f2 is a second voltage adjustment coefficient, f3 is a third voltage adjustment coefficient, and e1 is more than 1 and less than 2 and e3 is more than 1.2.
10. The ac/dc conversion system of a planar transformer based on a new high-magnetic material according to claim 8 or 9, wherein the first control execution unit sends an instruction to the rectifier to cause the rectifier to adjust the output current to i1×ki by the adjustment coefficient, setting i=1, 2,3; the second control execution unit sends instructions to the rectifier to cause the rectifier to adjust the output current to Ij or to the surge protector to cause the surge protector to adjust the input voltage to Uj.
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