CN105160061A - Method and apparatus for establishing equivalent circuit of multi-output high-frequency transformer - Google Patents
Method and apparatus for establishing equivalent circuit of multi-output high-frequency transformer Download PDFInfo
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- CN105160061A CN105160061A CN201510439285.3A CN201510439285A CN105160061A CN 105160061 A CN105160061 A CN 105160061A CN 201510439285 A CN201510439285 A CN 201510439285A CN 105160061 A CN105160061 A CN 105160061A
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Abstract
The invention discloses a method and an apparatus for establishing an equivalent circuit of a multi-output high-frequency transformer. The method comprises: obtaining winding parameters of a primary winding and a plurality of secondary windings in the high-frequency transformer; according to the winding parameters, adding an equivalent primary winding and a plurality of equivalent secondary windings; obtaining a distributed capacitance parameter between pins of the primary winding in the high-frequency transformer, and according to the distributed capacitance parameter, adding corresponding equivalent capacitance between the pins of the equivalent winding; and connecting the pins of each winding through the corresponding equivalent capacitance, and establishing the equivalent circuit of the multi-output high-frequency transformer. According to the technical scheme provided by the invention, the equivalent circuit is established on the basis of considering the influence of a multi-output distribution parameter on the high-frequency transformer, so that the design of the multi-output high-frequency transformer is facilitated, the development trend of the high-frequency transformer is met, and the development of a switch power supply to miniaturization, high frequency, high power density and the like is further promoted.
Description
Technical field
The present invention relates to electron electric power technical field, particularly relate to a kind of method and apparatus setting up the equivalent electrical circuit of the high-frequency transformer of multiple-channel output.
Background technology
Along with developing rapidly of electron electric power technology, Switching Power Supply has been widely used in the fields such as computing machine, communication, industrial processes and aviation.Switching Power Supply has that structure is simple, range of regulation is wide, input and output isolation, be easy to realize the advantages such as multiple-channel output, become the important component part of modern electronic equipment gradually, in these years become each major country of the world especially developed country research focus.High-frequency transformer, as the core component of Switching Power Supply, directly affects the overall performance of system.Current Switching Power Supply presents the development trend of miniaturization, high-frequency, high power density, and this is particularly outstanding on the impact of distribution parameter in high-frequency transformer design.Only considered when designing high-frequency transformer that single channel exported (as 5V exports) in the past, and ignoring the application that actual high-frequency transformer extensively exists multiple-channel output (5V, 12V and 15V as conventional), the distribution parameter impact of multiple-channel output is also out in the cold.
Summary of the invention
In view of the above problems, the invention provides a kind of method and apparatus setting up the equivalent electrical circuit of the high-frequency transformer of multiple-channel output, to solve the problem or to solve the problem at least in part.
According to one aspect of the present invention, provide a kind of method setting up the equivalent electrical circuit of the high-frequency transformer of multiple-channel output, the method comprises:
Obtain the winding parameter of former limit winding in described high-frequency transformer and multiple vice-side winding;
According to the winding parameter of described former limit winding and multiple vice-side winding, in blank scene, add an equivalence former limit winding and multiple equivalent vice-side winding;
Distributed capacitance parameter between the pin obtaining the former limit winding in described high-frequency transformer, and obtain the pin of former limit winding in described high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding;
According to described former limit winding pin between distributed capacitance parameter, between the pin of equivalence former limit winding, add corresponding equivalent capacity; According to the distributed capacitance parameter between the pin of described former limit winding and the pin of each vice-side winding, add corresponding equivalent capacity at the pin of equivalence former limit winding with between the pin of each equivalent vice-side winding;
The pin of each winding is coupled together by corresponding equivalent capacity, sets up the equivalent electrical circuit of the high-frequency transformer of multiple-channel output.
Alternatively, the winding parameter of described former limit winding and multiple vice-side winding comprises: basic parameter, resistance parameter, self-induction parameter and leakage inductance parameter;
Wherein, described basic parameter comprises: the size of the size of magnetic core size, winding support, core material, winding data, umber of turn and copper sheet.
Alternatively, the former limit winding in the described high-frequency transformer of described acquisition and the winding parameter of multiple vice-side winding comprise:
The resistance parameter of former limit winding in described high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter is calculated by electromagnetic finite element method;
The resistance parameter of former limit winding in described high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter is obtained by building test circuit measurement;
Or,
The resistance parameter of former limit winding in described high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter is obtained by building bridge diagram measurement.
Alternatively, the described winding parameter according to described former limit winding and multiple vice-side winding, adds an equivalence former limit winding and multiple equivalent vice-side winding comprises in blank scene:
According to the resistance parameter of described former limit winding and multiple vice-side winding, self-induction parameter and leakage inductance parameter, equivalence former limit winding adds corresponding equivalent resistance and equivalent inductance, each equivalent vice-side winding adds corresponding equivalent resistance and equivalent inductance.
Alternatively, the distributed capacitance parameter between the pin of the former limit winding in the described high-frequency transformer of described acquisition, and obtain the pin of former limit winding in described high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding comprises:
Distributed capacitance parameter between the pin being calculated the former limit winding in described high-frequency transformer by electromagnetic finite element method, and obtain the pin of former limit winding in described high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding;
Or,
Distributed capacitance parameter between the pin obtaining the former limit winding in described high-frequency transformer by building test circuit measurement, and obtain the pin of former limit winding in described high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding.
According to another aspect of the present invention, provide a kind of device setting up the equivalent electrical circuit of the high-frequency transformer of multiple-channel output, this device comprises:
Acquiring unit, is suitable for obtaining the winding parameter of former limit winding in described high-frequency transformer and multiple vice-side winding; Distributed capacitance parameter between the pin obtaining the former limit winding in described high-frequency transformer; And obtain the pin of former limit winding in described high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding;
Adding device, is suitable for the winding parameter according to described former limit winding and multiple vice-side winding, in blank scene, add an equivalence former limit winding and multiple equivalent vice-side winding; According to described former limit winding pin between distributed capacitance parameter, between the pin of equivalence former limit winding, add corresponding equivalent capacity; And according to the distributed capacitance parameter between the pin of described former limit winding and the pin of each vice-side winding, add corresponding equivalent capacity at the pin of equivalence former limit winding with between the pin of each equivalent vice-side winding;
Set up unit, be suitable for the pin of each winding to be coupled together by corresponding equivalent capacity, set up the equivalent electrical circuit of the high-frequency transformer of multiple-channel output.
Alternatively, the winding parameter of described former limit winding and multiple vice-side winding comprises: basic parameter, resistance parameter, self-induction parameter and leakage inductance parameter;
Wherein, described basic parameter comprises: the size of the size of magnetic core size, winding support, core material, winding data, umber of turn and copper sheet.
Alternatively, described acquiring unit, is suitable for calculating the resistance parameter of former limit winding in described high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter by electromagnetic finite element method; The resistance parameter of former limit winding in described high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter is obtained by building test circuit measurement; Or, the resistance parameter of former limit winding in described high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter is obtained by building bridge diagram measurement.
Alternatively, described adding device, be suitable for, according to the resistance parameter of described former limit winding and multiple vice-side winding, self-induction parameter and leakage inductance parameter, equivalence former limit winding adding corresponding equivalent resistance and equivalent inductance, each equivalent vice-side winding adding corresponding equivalent resistance and equivalent inductance.
Alternatively, described acquiring unit, distributed capacitance parameter between the pin being suitable for calculating the former limit winding in described high-frequency transformer by electromagnetic finite element method, and obtain the pin of former limit winding in described high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding; Or, the distributed capacitance parameter between the pin obtaining the former limit winding in described high-frequency transformer by building test circuit measurement, and obtain the pin of former limit winding in described high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding.
From the above, technology provided by the invention is after the winding parameter of the former limit winding obtained in high-frequency transformer and multiple vice-side winding, equivalent former limit winding and equivalent vice-side winding is added in blank scene, after distributed capacitance parameter between the pin obtaining the former limit winding in high-frequency transformer and the distributed capacitance parameter between the pin of former limit winding and the pin of each vice-side winding, between the winding pin of correspondence, add equivalent capacity, play the equivalent electrical circuit of the high-frequency transformer of multiple-channel output eventually through circuit connection establishment.This programme is considering that the distribution parameter of multiple-channel output sets up equivalent electrical circuit on the basis of the impact of high-frequency transformer, compensate for the defect of the equivalent electrical circuit of the high-frequency transformer cannot setting up multiple-channel output in prior art, be conducive to the design of the high-frequency transformer of multiple-channel output, meet the development trend of high-frequency transformer, promote the development of Switching Power Supply to directions such as miniaturization, high-frequency, high power densities further.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows a kind of according to an embodiment of the invention process flow diagram setting up the method for the equivalent electrical circuit of the high-frequency transformer of multiple-channel output;
Fig. 2 shows a kind of according to an embodiment of the invention pinouts of high-frequency transformer of multiple-channel output;
Fig. 3 shows a kind of according to an embodiment of the invention schematic diagram of equivalent electrical circuit of high-frequency transformer of multiple-channel output;
Fig. 4 shows a kind of according to an embodiment of the invention schematic diagram setting up the device of the equivalent electrical circuit of the high-frequency transformer of multiple-channel output.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Fig. 1 shows a kind of according to an embodiment of the invention process flow diagram setting up the method for the equivalent electrical circuit of the high-frequency transformer of multiple-channel output.As shown in Figure 1, the method comprises:
Step S110, the former limit winding in acquisition high-frequency transformer and the winding parameter of multiple vice-side winding.
Step S120, according to the winding parameter of former limit winding and multiple vice-side winding, adds an equivalence former limit winding and multiple equivalent vice-side winding in blank scene.
In this step, described blank scene refers to the initial scene of the equivalent electrical circuit of the high-frequency transformer setting up multiple-channel output, does not do concrete restriction at this.
Step S130, the distributed capacitance parameter between the pin obtaining the former limit winding in high-frequency transformer, and the pin of former limit winding obtained in high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding.
Step S140, according to former limit winding pin between distributed capacitance parameter, between the pin of equivalence former limit winding, add corresponding equivalent capacity; According to the distributed capacitance parameter between the pin of former limit winding and the pin of each vice-side winding, add corresponding equivalent capacity at the pin of equivalence former limit winding with between the pin of each equivalent vice-side winding.
Step S150, is coupled together the pin of each winding by corresponding equivalent capacity, sets up the equivalent electrical circuit of the high-frequency transformer of multiple-channel output.
Visible, method shown in Fig. 1 is after the winding parameter of the former limit winding obtained in high-frequency transformer and multiple vice-side winding, equivalent former limit winding and equivalent vice-side winding is added in blank scene, after distributed capacitance parameter between the pin obtaining the former limit winding in high-frequency transformer and the distributed capacitance parameter between the pin of former limit winding and the pin of each vice-side winding, between the winding pin of correspondence, add equivalent capacity, play the equivalent electrical circuit of the high-frequency transformer of multiple-channel output eventually through circuit connection establishment.This programme is considering that the distribution parameter of multiple-channel output sets up equivalent electrical circuit on the basis of the impact of high-frequency transformer, compensate for the defect of the equivalent electrical circuit of the high-frequency transformer cannot setting up multiple-channel output in prior art, be conducive to the design of the high-frequency transformer of multiple-channel output, meet the development trend of high-frequency transformer, promote the development of Switching Power Supply to directions such as miniaturization, high-frequency, high power densities further.
In one embodiment of the invention, the former limit winding in the high-frequency transformer described in step S110 of method shown in Fig. 1 and the winding parameter of multiple vice-side winding comprise: basic parameter, resistance parameter, self-induction parameter and leakage inductance parameter; Wherein, basic parameter comprises: the size etc. of the size of magnetic core size, winding support, core material, winding data, umber of turn and copper sheet.
On this basis, then the winding parameter obtaining former limit winding in described high-frequency transformer and multiple vice-side winding in step S110 comprises: calculate the resistance parameter of former limit winding in high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter by electromagnetic finite element method; The resistance parameter of former limit winding in high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter is obtained by building test circuit measurement; Or, the resistance parameter of former limit winding in high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter is obtained by building bridge diagram measurement.
And then in the step s 120, according to the winding parameter of described former limit winding and multiple vice-side winding, in blank scene, add an equivalence former limit winding and multiple equivalent vice-side winding comprise: according to the basic parameter of described former limit winding and multiple vice-side winding, in blank scene, add an equivalence former limit winding and multiple equivalent vice-side winding; According to the resistance parameter of described former limit winding and multiple vice-side winding, self-induction parameter and leakage inductance parameter, equivalence former limit winding adds corresponding equivalent resistance and equivalent inductance, each equivalent vice-side winding adds corresponding equivalent resistance and equivalent inductance.
In one embodiment of the invention, the step S130 of method shown in Fig. 1, distributed capacitance parameter between the pin of the former limit winding in acquisition high-frequency transformer, and the pin of former limit winding in acquisition high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding comprise: the distributed capacitance parameter between the pin being calculated the former limit winding in high-frequency transformer by electromagnetic finite element method, and obtain the pin of former limit winding in described high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding; Or, the distributed capacitance parameter between the pin obtaining the former limit winding in described high-frequency transformer by building test circuit measurement, and obtain the pin of former limit winding in described high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding.
Fig. 2 shows a kind of according to an embodiment of the invention pinouts of high-frequency transformer of multiple-channel output.As shown in Figure 2, the high-frequency transformer of this multiple-channel output has eight pins, and former limit winding N1 has pin 1 and pin 2, for inputting high-frequency pulse voltage; Vice-side winding N2 has pin 5 and pin 6, for exporting 5V direct current, and wherein pin 5 ground connection; Vice-side winding N3 has pin 6 and pin 7, for exporting 15V direct current; Vice-side winding N4 has pin 6 and pin 8, for exporting 12V direct current; Vice-side winding N5 has pin 3 and pin 4, for feedback signal.
First, utilize electromagnetic finite meta analysis software to complete the finite element model of this high-frequency transformer, comprise the setting of size of the size to magnetic core, the size of winding support, core material, winding data and the number of turn and copper sheet.Voltage drive setting is carried out to each pin of high-frequency transformer, comprise voltage positive dirction to arrange, the amplitude of driving pulse and the setting of frequency, distributed capacitance parameter between the pin solving the former limit winding in high-frequency transformer, and the distributed capacitance parameter solved between the heavy pin of former limit winding of high-frequency transformer and the pin of each vice-side winding, be specially: the distributed capacitance parameter C21 between pin 1 and pin 2, distributed capacitance parameter C24 between pin 2 and pin 4, distributed capacitance parameter C26 between pin 2 and pin 6, distributed capacitance parameter C27 between pin 2 and pin 7, distributed capacitance parameter C28 between pin 2 and pin 8.In addition, in other embodiments of the invention, also can build test circuit by the equipment such as Selection utilization signal generator, measure and obtain capacitance profile parameter C21 between pin, C24, C26, C27, C28.
Then, each pin of the electromagnetic finite meta-model of high-frequency transformer is focused between two, be namely arranged to an equivalence former limit winding and multiple equivalent vice-side winding; Current excitation setting is carried out to the former limit winding of high-frequency transformer, comprise the setting of direction of current and size, solve the leakage inductance of each winding in the self-induction LN2 of the vice-side winding N2 in high-frequency transformer, self-induction LN3, the self-induction LN4 of vice-side winding N4 of vice-side winding N3, the self-induction LN5 of vice-side winding N5 and high-frequency transformer.In addition, in other embodiments of the invention, the equipment such as signal generator also can be utilized to build test circuit, measure and obtain the self-induction LN2 of each winding, LN3, LN4, LN5 and leakage inductance; And utilize bridge diagram, measure the resistance of each winding of high-frequency transformer.
According to the resistance parameter of the former limit winding of above-mentioned acquisition and multiple vice-side winding, self-induction parameter and leakage inductance parameter, equivalence former limit winding adds corresponding equivalent resistance and equivalent inductance, each equivalent vice-side winding adds corresponding equivalent resistance and equivalent inductance.According to the former limit winding of above-mentioned acquisition pin between distributed capacitance parameter, between the pin of equivalence former limit winding, add corresponding equivalent capacity; According to the distributed capacitance parameter between the pin of former limit winding of above-mentioned acquisition and the pin of each vice-side winding, corresponding equivalent capacity is added with between the pin of each equivalent vice-side winding at the pin of equivalence former limit winding, again the pin of each winding is coupled together by corresponding equivalent capacity, set up the equivalent electrical circuit of the high-frequency transformer of multiple-channel output as shown in Figure 3.Fig. 3 shows a kind of according to an embodiment of the invention schematic diagram of equivalent electrical circuit of high-frequency transformer of multiple-channel output, can see, in the equivalent electrical circuit of the high-frequency transformer of this multiple-channel output, pin 5 ground connection, pin 1 is connected with pin 2 by equivalent capacity C21, pin 2 is respectively by equivalent capacity C24, C26, C27 and C28 and pin 4, pin 6, pin 7 is connected with pin 8, series equivalent inductance L N2 on the pin 6 of vice-side winding N2, series equivalent inductance L N3 on the pin 7 of vice-side winding N3, series equivalent inductance L N4 on the pin 8 of vice-side winding N4, series equivalent inductance L N5 on the pin 3 of vice-side winding N5.
It should be noted that; to the components and parts in equivalent electrical circuit shown in Fig. 3 increase (as increase multiple vice-side winding pin between electric capacity, increase mutual inductance etc. between Multiple coil) or to reduce, and to the change process of this circuit all in protection scope of the present invention.
Fig. 4 shows a kind of according to an embodiment of the invention schematic diagram setting up the device of the equivalent electrical circuit of the high-frequency transformer of multiple-channel output.As shown in Figure 4, this device 400 setting up the equivalent electrical circuit of the high-frequency transformer of multiple-channel output comprises:
Acquiring unit 410, is suitable for obtaining the winding parameter of former limit winding in high-frequency transformer and multiple vice-side winding; Distributed capacitance parameter between the pin of the former limit winding in acquisition high-frequency transformer; And the pin of former limit winding in acquisition high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding.
Adding device 420, is suitable for the winding parameter according to former limit winding and multiple vice-side winding, in blank scene, add an equivalence former limit winding and multiple equivalent vice-side winding; According to former limit winding pin between distributed capacitance parameter, between the pin of equivalence former limit winding, add corresponding equivalent capacity; And according to the distributed capacitance parameter between the pin of former limit winding and the pin of each vice-side winding, add corresponding equivalent capacity at the pin of equivalence former limit winding with between the pin of each equivalent vice-side winding.
Set up unit 430, be suitable for the pin of each winding to be coupled together by corresponding equivalent capacity, set up the equivalent electrical circuit of the high-frequency transformer of multiple-channel output.
Visible, device shown in Fig. 4 is cooperatively interacted by each unit, after the winding parameter of the former limit winding obtained in high-frequency transformer and multiple vice-side winding, equivalent former limit winding and equivalent vice-side winding is added in blank scene, after distributed capacitance parameter between the pin obtaining the former limit winding in high-frequency transformer and the distributed capacitance parameter between the pin of former limit winding and the pin of each vice-side winding, between the winding pin of correspondence, add equivalent capacity, play the equivalent electrical circuit of the high-frequency transformer of multiple-channel output eventually through circuit connection establishment.This programme is considering that the distribution parameter of multiple-channel output sets up equivalent electrical circuit on the basis of the impact of high-frequency transformer, compensate for the defect of the equivalent electrical circuit of the high-frequency transformer cannot setting up multiple-channel output in prior art, be conducive to the design of the high-frequency transformer of multiple-channel output, meet the development trend of high-frequency transformer, promote the development of Switching Power Supply to directions such as miniaturization, high-frequency, high power densities further.
In one embodiment of the invention, the former limit winding in above-mentioned high-frequency transformer and the winding parameter of multiple vice-side winding comprise: basic parameter, resistance parameter, self-induction parameter and leakage inductance parameter; Wherein, basic parameter comprises: the size of the size of magnetic core size, winding support, core material, winding data, umber of turn and copper sheet.
The then acquiring unit 410 of Fig. 4 shown device, is suitable for calculating the resistance parameter of former limit winding in described high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter by electromagnetic finite element method; The resistance parameter of former limit winding in described high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter is obtained by building test circuit measurement; Or, the resistance parameter of former limit winding in described high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter is obtained by building bridge diagram measurement.
After the winding parameter that acquiring unit 410 gets former limit winding in high-frequency transformer and multiple vice-side winding, the adding device 420 of Fig. 4 shown device, be suitable for the basic parameter according to former limit winding and multiple vice-side winding, equivalent former limit winding and multiple equivalent vice-side winding is added in blank scene, again according to the resistance parameter of described former limit winding and multiple vice-side winding, self-induction parameter and leakage inductance parameter, equivalence former limit winding adds corresponding equivalent resistance and equivalent inductance, each equivalent vice-side winding adds corresponding equivalent resistance and equivalent inductance.
In one embodiment of the invention, the acquiring unit 410 of Fig. 4 shown device, distributed capacitance parameter between the pin being suitable for calculating the former limit winding in high-frequency transformer by electromagnetic finite element method, and obtain the pin of former limit winding in high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding; Or, the distributed capacitance parameter between the pin obtaining the former limit winding in high-frequency transformer by building test circuit measurement, and obtain the pin of former limit winding in high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding.
It should be noted that, each embodiment of Fig. 4 shown device is corresponding identical with each embodiment shown in above-mentioned Fig. 1-Fig. 3, is described in detail hereinbefore, does not repeat them here.
In sum, technical scheme provided by the invention is after the winding parameter of the former limit winding obtained in high-frequency transformer and multiple vice-side winding, equivalent former limit winding and equivalent vice-side winding is added in blank scene, after distributed capacitance parameter between the pin obtaining the former limit winding in high-frequency transformer and the distributed capacitance parameter between the pin of former limit winding and the pin of each vice-side winding, between the winding pin of correspondence, add equivalent capacity, play the equivalent electrical circuit of the high-frequency transformer of multiple-channel output eventually through circuit connection establishment.This programme is considering that the distribution parameter of multiple-channel output sets up equivalent electrical circuit on the basis of the impact of high-frequency transformer, compensate for the defect of the equivalent electrical circuit of the high-frequency transformer cannot setting up multiple-channel output in prior art, be conducive to the design of the high-frequency transformer of multiple-channel output, meet the development trend of high-frequency transformer, promote the development of Switching Power Supply to directions such as miniaturization, high-frequency, high power densities further.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. set up a method for the equivalent electrical circuit of the high-frequency transformer of multiple-channel output, it is characterized in that, the method comprises:
Obtain the winding parameter of former limit winding in described high-frequency transformer and multiple vice-side winding;
According to the winding parameter of described former limit winding and multiple vice-side winding, in blank scene, add an equivalence former limit winding and multiple equivalent vice-side winding;
Distributed capacitance parameter between the pin obtaining the former limit winding in described high-frequency transformer, and obtain the pin of former limit winding in described high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding;
According to described former limit winding pin between distributed capacitance parameter, between the pin of equivalence former limit winding, add corresponding equivalent capacity; According to the distributed capacitance parameter between the pin of described former limit winding and the pin of each vice-side winding, add corresponding equivalent capacity at the pin of equivalence former limit winding with between the pin of each equivalent vice-side winding;
The pin of each winding is coupled together by corresponding equivalent capacity, sets up the equivalent electrical circuit of the high-frequency transformer of multiple-channel output.
2. the method for claim 1, is characterized in that, the winding parameter of described former limit winding and multiple vice-side winding comprises: basic parameter, resistance parameter, self-induction parameter and leakage inductance parameter;
Wherein, described basic parameter comprises: the size of the size of magnetic core size, winding support, core material, winding data, umber of turn and copper sheet.
3. method as claimed in claim 2, it is characterized in that, the former limit winding in the described high-frequency transformer of described acquisition and the winding parameter of multiple vice-side winding comprise:
The resistance parameter of former limit winding in described high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter is calculated by electromagnetic finite element method;
The resistance parameter of former limit winding in described high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter is obtained by building test circuit measurement;
Or,
The resistance parameter of former limit winding in described high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter is obtained by building bridge diagram measurement.
4. method as claimed in claim 3, is characterized in that, the described winding parameter according to described former limit winding and multiple vice-side winding, adds an equivalence former limit winding and multiple equivalent vice-side winding comprises in blank scene:
According to the resistance parameter of described former limit winding and multiple vice-side winding, self-induction parameter and leakage inductance parameter, equivalence former limit winding adds corresponding equivalent resistance and equivalent inductance, each equivalent vice-side winding adds corresponding equivalent resistance and equivalent inductance.
5. the method for claim 1, it is characterized in that, distributed capacitance parameter between the pin of the former limit winding in the described high-frequency transformer of described acquisition, and obtain the pin of former limit winding in described high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding comprises:
Distributed capacitance parameter between the pin being calculated the former limit winding in described high-frequency transformer by electromagnetic finite element method, and obtain the pin of former limit winding in described high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding;
Or,
Distributed capacitance parameter between the pin obtaining the former limit winding in described high-frequency transformer by building test circuit measurement, and obtain the pin of former limit winding in described high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding.
6. set up a device for the equivalent electrical circuit of the high-frequency transformer of multiple-channel output, it is characterized in that, this device comprises:
Acquiring unit, is suitable for obtaining the winding parameter of former limit winding in described high-frequency transformer and multiple vice-side winding; Distributed capacitance parameter between the pin obtaining the former limit winding in described high-frequency transformer; And obtain the pin of former limit winding in described high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding;
Adding device, is suitable for the winding parameter according to described former limit winding and multiple vice-side winding, in blank scene, add an equivalence former limit winding and multiple equivalent vice-side winding; According to described former limit winding pin between distributed capacitance parameter, between the pin of equivalence former limit winding, add corresponding equivalent capacity; And according to the distributed capacitance parameter between the pin of described former limit winding and the pin of each vice-side winding, add corresponding equivalent capacity at the pin of equivalence former limit winding with between the pin of each equivalent vice-side winding;
Set up unit, be suitable for the pin of each winding to be coupled together by corresponding equivalent capacity, set up the equivalent electrical circuit of the high-frequency transformer of multiple-channel output.
7. device as claimed in claim 6, it is characterized in that, the winding parameter of described former limit winding and multiple vice-side winding comprises: basic parameter, resistance parameter, self-induction parameter and leakage inductance parameter;
Wherein, described basic parameter comprises: the size of the size of magnetic core size, winding support, core material, winding data, umber of turn and copper sheet.
8. device as claimed in claim 7, is characterized in that,
Described acquiring unit, is suitable for calculating the resistance parameter of former limit winding in described high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter by electromagnetic finite element method; The resistance parameter of former limit winding in described high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter is obtained by building test circuit measurement; Or, the resistance parameter of former limit winding in described high-frequency transformer and multiple vice-side winding, self-induction parameter and leakage inductance parameter is obtained by building bridge diagram measurement.
9. device as claimed in claim 8, is characterized in that,
Described adding device, be suitable for according to the resistance parameter of described former limit winding and multiple vice-side winding, self-induction parameter and leakage inductance parameter, equivalence former limit winding adds corresponding equivalent resistance and equivalent inductance, each equivalent vice-side winding adds corresponding equivalent resistance and equivalent inductance.
10. device as claimed in claim 6, is characterized in that,
Described acquiring unit, distributed capacitance parameter between the pin being suitable for calculating the former limit winding in described high-frequency transformer by electromagnetic finite element method, and obtain the pin of former limit winding in described high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding; Or, the distributed capacitance parameter between the pin obtaining the former limit winding in described high-frequency transformer by building test circuit measurement, and obtain the pin of former limit winding in described high-frequency transformer and the distributed capacitance parameter between the pin of each vice-side winding.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110174581A (en) * | 2019-04-28 | 2019-08-27 | 中国科学院宁波材料技术与工程研究所 | It is wirelessly transferred transformer leakage inductance measurement method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110174581A (en) * | 2019-04-28 | 2019-08-27 | 中国科学院宁波材料技术与工程研究所 | It is wirelessly transferred transformer leakage inductance measurement method and device |
| RU2794695C1 (en) * | 2022-03-15 | 2023-04-24 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный аграрный университет" (ФГБОУ ВО СПбГАУ) | Method for determining parameters of equivalent circuit of “wye-wye with grounding” transformers for building digital models of distribution networks |
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