CN102255305A - High-frequency equivalent circuit of converter transformer - Google Patents
High-frequency equivalent circuit of converter transformer Download PDFInfo
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- CN102255305A CN102255305A CN2011101755804A CN201110175580A CN102255305A CN 102255305 A CN102255305 A CN 102255305A CN 2011101755804 A CN2011101755804 A CN 2011101755804A CN 201110175580 A CN201110175580 A CN 201110175580A CN 102255305 A CN102255305 A CN 102255305A
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Abstract
The invention provides a high-frequency equivalent circuit of a converter transformer, and the circuit provided by the invention is used for interference level calculation of high-voltage direct current transmission PLC/RI (power line carrier/radio circuit). The circuit provided by the invention is structurally characterized by consisting of an 'I'-shaped circuit, ground capacitors at four end parts of the 'I'-shaped circuit, a capacitor between two ends of the upper edge of the 'I'-shaped circuit and a capacitor between two ends of the lower edge of the 'I'-shaped circuit, wherein. The principle of the circuit is as follows: the traditional inverted L-shaped circuit is replaced by the 'I'-shaped circuit is formed by connecting an inductor L and a resistor R in serials, the ground capacitors at four end parts of the 'I'-shaped circuit simulate the ground stray capacitor of the windings of the transformer windings, and the capacitor between the upper and lower edges of the 'I'-shaped circuit simulates the stray capacitor between the primary winding and secondary winding of the transformer. The circuit provided by the invention has a simple structure which is easy to understand, is suitable for reflecting the impedance characteristic of the transformer at a high frequency (10kHz-10MHz), and facilitates the establishment of a transformer model in high-frequency simulation.
Description
Technical field
The invention belongs to the direct current transportation technical field, particularly a kind of converter transformer high frequency equivalent circuit that is used for the calculating of high voltage direct current transmission (HVDC) PLC/RI interference level.
Background technology
Recent years, the high voltage dc transmission technology development is swift and violent.In the high voltage direct current transmission project system design, because the restriction of equipment high frequency model validity is difficult to the interference level of high voltage direct current transmission project at electric power system carrier wave (PLC) and radio (RI) communications band accurately calculated.
The high frequency equivalent circuit of the converter transformer that now generally uses is phase structure, form by stray capacitance between terminal and two ends stray capacitance over the ground, because this structure is too simple, be difficult to that (characteristic under the 10kHz～10MHz) is accurately simulated at high frequency to converter transformer.
Summary of the invention
Technical problem to be solved by this invention provides a kind of converter transformer high frequency equivalent circuit, can reflect accurately that converter transformer is in the high frequency (impedance operator under the 10kHz～10MHz).
To achieve these goals, the present invention adopts following technical scheme:
A kind of converter transformer high-frequency equivalent circuit structure, comprise the I shape circuit, and capacitor C 1, capacitor C 6 and winding capacitor C 2, capacitor C 3, capacitor C 4, the capacitor C 5 of stray capacitance over the ground of stray capacitance between the simulation winding, described I shape circuit comprises inductance L 1, resistance R 1, inductance L 2, resistance R 2, inductance L 3, resistance R 3, resistance R 4, inductance L 4, resistance R 5 and inductance L 5; After connecting successively, described inductance L 2, resistance R 2, resistance R 4 and inductance L 4 be connected between the x and X of capacitor terminal, after connecting successively, described inductance L 3, resistance R 3, resistance R 5 and inductance L 5 be connected between a and A of capacitor terminal, after described resistance R 1 and inductance L 1 series connection, one end is connected between resistance R 3 and the resistance R 5, and the other end is connected between resistance R 1 and the resistance R 4; The capacitor C 1 of stray capacitance and C6 are connected between transformer terminal a and the A and between transformer terminal x and the X between described simulation winding; Between transformer terminal a and x, be in series with described capacitor C 2 and capacitor C 3, between transformer terminal A and X, be in series with described capacitor C 4 and capacitor C 5, wherein, the node ground connection between described capacitor C 2 and the capacitor C 3, the node ground connection between described capacitor C 4 and the capacitor C 5.
As the preferred embodiments of the present invention, the impedance of described inductance L 2, resistance R 2, inductance L 3, resistance R 3, resistance R 4, inductance L 4, resistance R 5 and inductance L 5 indication transformers.
As the preferred embodiments of the present invention, the impedance of described inductance L 1 and resistance R 1 indication transformer field excitation branch line.
As the preferred embodiments of the present invention, described capacitor C 1 and capacitor C 6 are distinguished between indication transformer terminal a and the A and the stray capacitance between x and the X.
As the preferred embodiments of the present invention, described capacitor C 2 indication transformer terminal a are stray capacitance over the ground, described capacitor C 3 indication transformer terminal x are stray capacitance over the ground, and described capacitor C 4 indication transformer terminal A are stray capacitance over the ground, and described capacitor C 5 indication transformer terminal X are stray capacitance over the ground.
As the preferred embodiments of the present invention, the capacitance of described capacitor C 1 and capacitor C 6 equates.
As the preferred embodiments of the present invention, the resistance value of described resistance R 2, resistance R 3, resistance R 4, resistance R 5 equates.
As the preferred embodiments of the present invention, the inductance value of described inductance L 2, inductance L 3, inductance L 4, inductance L 5 equates.
Compared with prior art, converter transformer high frequency equivalent circuit of the present invention has the following advantages at least: " worker " font circuit that equivalent electric circuit of the present invention forms after being connected with resistance R by inductance L, four ends of " worker " font circuit connect direct-to-ground capacitance, and the electric capacity between electric capacity between two ends, " worker " font circuit top and the following two ends of " worker " font circuit is formed.The basic principle of this circuit is, replace traditional Γ shape circuit with L " worker " font circuit that the back forms of connecting with R, four ends of " worker " font circuit direct-to-ground capacitance analogue transformer winding is stray capacitance over the ground, the stray capacitance between capacitance simulation transformer first and second winding between two ends, the upper and lower limit of " worker " font circuit.The present invention is simple in structure understandable, is applicable to that (impedance operator down of 10kHz～10MHz) makes things convenient for and set up transformer model when high frequency emulation the reflection transformer at high frequency.
Description of drawings
Fig. 1 is the effect circuit structure diagram of the specific embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done and to describe in further detail.
See also shown in Figure 1, a kind of converter transformer high frequency equivalent circuit that is used for the calculating of high voltage direct current transmission PLC/RI interference level of the present invention, comprise " worker " font circuit that constitutes by inductance L 1, resistance R 1, inductance L 2, resistance R 2, inductance L 3, resistance R 3, resistance R 4, inductance L 4, resistance R 5 and inductance L 5, and capacitor C 1, capacitor C 6 and winding capacitor C 2, capacitor C 3, capacitor C 4, the capacitor C 5 of stray capacitance over the ground of stray capacitance between the simulation winding.
Wherein, inductance L 2, resistance R 2, after connecting successively, resistance R 4 and inductance L 4 be connected between a and A of capacitor terminal, inductance L 3, resistance R 3, after connecting successively, resistance R 5 and inductance L 5 be connected between the x and X of capacitor terminal, after described resistance R 1 and inductance L 1 series connection, one end is connected between resistance R 3 and the resistance R 5, the other end is connected between resistance R 1 and the resistance R 4, more precisely, be exactly that inductance L 1 is connected between resistance R 3 and the resistance R 5, resistance R 1 is connected between resistance R 2 and the resistance R 4, like this, inductance L 1, resistance R 1, inductance L 2, resistance R 2, inductance L 3, resistance R 3, inductance L 4, resistance R 4, inductance L 5, resistance R 5 forms I-shaped structure.
Be parallel with the capacitor C 6 of stray capacitance between the simulation winding on the branch road that described inductance L 3, resistance R 3, resistance R 5 and inductance L 5 form, the branch road that described inductance L 2, resistance R 2, resistance R 4 and inductance L 4 form is parallel with the capacitor C 1 of stray capacitance between the simulation winding.In other words, simulate the capacitor C 1 of stray capacitance between winding and C6 is connected between transformer terminal a and the A and between transformer terminal x and the X exactly.
Between transformer terminal a and x, be in series with capacitor C 2 and capacitor C 3, between transformer terminal A and X, be in series with capacitor C 4 and capacitor C 5, wherein, the node ground connection between capacitor C 2 and the capacitor C 3, the node ground connection between capacitor C 4 and the capacitor C 5.
In foregoing circuit, the impedance of described inductance L 2, resistance R 2, inductance L 3, resistance R 3, resistance R 4, inductance L 4, resistance R 5 and inductance L 5 indication transformers, the impedance of inductance L 1 and resistance R 1 indication transformer field excitation branch line, capacitor C 1 and capacitor C 6 are distinguished between indication transformer terminal a and the A and the stray capacitance between x and the X, capacitor C 2 indication transformer terminal a are stray capacitance over the ground, capacitor C 3 indication transformer terminal x are stray capacitance over the ground, capacitor C 4 indication transformer terminal A are stray capacitance over the ground, and capacitor C 5 indication transformer terminal X are stray capacitance over the ground.
As known from the above, converter transformer equivalent electric circuit of the present invention can reflect converter transformer accurately in the high frequency (impedance operator under the 10kHz～10MHz).
The above only is one embodiment of the present invention, it or not whole or unique execution mode, the conversion of any equivalence that those of ordinary skills take technical solution of the present invention by reading specification of the present invention is claim of the present invention and contains.
Claims (8)
1. converter transformer high frequency equivalent circuit, it is characterized in that: comprise the I shape circuit, and capacitor C 1, capacitor C 6 and winding capacitor C 2, capacitor C 3, capacitor C 4, the capacitor C 5 of stray capacitance over the ground of stray capacitance between the simulation winding, described I shape circuit comprises inductance L 1, resistance R 1, inductance L 2, resistance R 2, inductance L 3, resistance R 3, resistance R 4, inductance L 4, resistance R 5 and inductance L 5;
After connecting successively, described inductance L 3, resistance R 3, resistance R 5 and inductance L 5 be connected between the x and X of capacitor terminal, after connecting successively, described inductance L 2, resistance R 2, resistance R 4 and inductance L 4 be connected between a and A of capacitor terminal, after described resistance R 1 and inductance L 1 series connection, one end is connected between resistance R 3 and the resistance R 5, and the other end is connected between resistance R 2 and the resistance R 4;
The capacitor C 1 of stray capacitance and C6 are connected between transformer terminal a and the A and between transformer terminal x and the X between described simulation winding;
Between transformer terminal a and x, be in series with described capacitor C 2 and capacitor C 3, between transformer terminal A and X, be in series with described capacitor C 4 and capacitor C 5, wherein, the node ground connection between described capacitor C 2 and the capacitor C 3, the node ground connection between described capacitor C 4 and the capacitor C 5.
2. a kind of according to claim 1 converter transformer high frequency equivalent circuit is characterized in that: the impedance of described inductance L 2, resistance R 2, inductance L 3, resistance R 3, resistance R 4, inductance L 4, resistance R 5 and inductance L 5 indication transformers.
3. as a kind of converter transformer high frequency equivalent circuit as described in the claim 2, it is characterized in that: the impedance of described inductance L 1 and resistance R 1 indication transformer field excitation branch line.
4. as a kind of converter transformer high frequency equivalent circuit as described in the claim 3, it is characterized in that: described capacitor C 1 and capacitor C 6 are respectively between indication transformer terminal a and the A and the stray capacitance between x and the X.
5. as a kind of converter transformer high frequency equivalent circuit as described in the claim 4, it is characterized in that: described capacitor C 2 indication transformer terminal a are stray capacitance over the ground, described capacitor C 3 indication transformer terminal x are stray capacitance over the ground, described capacitor C 4 indication transformer terminal A are stray capacitance over the ground, and described capacitor C 5 indication transformer terminal X are stray capacitance over the ground.
6. a kind of according to claim 1 converter transformer high frequency equivalent circuit is characterized in that: the capacitance of described capacitor C 1 and capacitor C 6 equates.
7. a kind of according to claim 1 converter transformer high frequency equivalent circuit is characterized in that: the resistance value of described resistance R 2, resistance R 3, resistance R 4, resistance R 5 equates.
8. a kind of according to claim 1 converter transformer high frequency equivalent circuit is characterized in that: the inductance value of described inductance L 2, inductance L 3, inductance L 4, inductance L 5 equates.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101755804A CN102255305A (en) | 2011-06-27 | 2011-06-27 | High-frequency equivalent circuit of converter transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101755804A CN102255305A (en) | 2011-06-27 | 2011-06-27 | High-frequency equivalent circuit of converter transformer |
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| CN102255305A true CN102255305A (en) | 2011-11-23 |
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| CN2011101755804A Pending CN102255305A (en) | 2011-06-27 | 2011-06-27 | High-frequency equivalent circuit of converter transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459370A (en) * | 2014-10-28 | 2015-03-25 | 中国南方电网有限责任公司电网技术研究中心 | Converter transformer broadband electromagnetic transient analysis model based on double transmission line structures |
| CN104764964A (en) * | 2015-04-21 | 2015-07-08 | 华北电力大学 | High-capacity high-frequency power transformer analysis method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6924724B2 (en) * | 2003-01-24 | 2005-08-02 | Solarflare Communications, Inc. | Method and apparatus for transformer bandwidth enhancement |
| CN101840441A (en) * | 2009-03-18 | 2010-09-22 | 复旦大学 | High-frequency equivalent circuit structure for on-chip transformer |
-
2011
- 2011-06-27 CN CN2011101755804A patent/CN102255305A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6924724B2 (en) * | 2003-01-24 | 2005-08-02 | Solarflare Communications, Inc. | Method and apparatus for transformer bandwidth enhancement |
| CN101840441A (en) * | 2009-03-18 | 2010-09-22 | 复旦大学 | High-frequency equivalent circuit structure for on-chip transformer |
Non-Patent Citations (4)
| Title |
|---|
| 《IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES》 20080831 Chee Chong Lim等 "Fully Symmetrical Monolithic Transformer (True 1 : 1) for Silicon RFIC" 第56卷, 第10期 * |
| 《Silicon Monolithic Integrated Circuits in RF Systems, 2007 Topical Meeting on》 20070112 Young Jae Lee等 "Q - Enhanced 5GHz CMOS VCO Using 4-port Transformer" , * |
| CHEE CHONG LIM等: ""Fully Symmetrical Monolithic Transformer (True 1 : 1) for Silicon RFIC"", 《IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES》, vol. 56, no. 10, 31 August 2008 (2008-08-31) * |
| YOUNG JAE LEE等: ""Q - Enhanced 5GHz CMOS VCO Using 4-port Transformer"", 《SILICON MONOLITHIC INTEGRATED CIRCUITS IN RF SYSTEMS, 2007 TOPICAL MEETING ON》, 12 January 2007 (2007-01-12) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459370A (en) * | 2014-10-28 | 2015-03-25 | 中国南方电网有限责任公司电网技术研究中心 | Converter transformer broadband electromagnetic transient analysis model based on double transmission line structures |
| CN104764964A (en) * | 2015-04-21 | 2015-07-08 | 华北电力大学 | High-capacity high-frequency power transformer analysis method and device |
| CN104764964B (en) * | 2015-04-21 | 2018-04-10 | 华北电力大学 | Large Copacity high frequency power transformer analysis method and device |
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Application publication date: 20111123 |