CN102446621B - Flow equalizing method for input windings parallelly-wound by plurality of leads for medium high frequency transformers - Google Patents
Flow equalizing method for input windings parallelly-wound by plurality of leads for medium high frequency transformers Download PDFInfo
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- CN102446621B CN102446621B CN2011104037092A CN201110403709A CN102446621B CN 102446621 B CN102446621 B CN 102446621B CN 2011104037092 A CN2011104037092 A CN 2011104037092A CN 201110403709 A CN201110403709 A CN 201110403709A CN 102446621 B CN102446621 B CN 102446621B
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Abstract
The invention relates to a flow equalizing method for input windings parallelly-wound by plurality of leads for medium high frequency transformers, which comprises at least two medium high frequency transformers. Firstly, output windings of each medium high frequency transformer are short-circuited, and inductance quantity, namely leakage inductance, of each lead in the input windings of each medium high frequency transformer is measured. A lead in each input winding of each medium high frequency transformer is selected, and a plurality of leads are connected in series, and the leakage inductance of the leads after series connection is equal. The flow equalizing method for input windings parallelly-wound by the plurality of leads for medium high frequency transformers is convenient to conduct, good in conducting effect, capable of reducing current difference of each lead and capable of achieving flow equalizing of each winding of the medium high frequency transformers, and improves service life of the medium high frequency transformers.
Description
Technical field
The present invention relates to a kind of medium-high frequency transformer multiple conducting wires and around input winding current equalizing method.
Background technology
Medium-high frequency transformer input winding under big current conditions adopt multiple conducting wires usually and around mode to increase ampacity; But multiple conducting wires and around the time be difficult on the locus of magnetic core in full accord; Can cause in the several paralleled conductor lead every leakage inductance inconsistent; Special under the application operating mode of many series connection of medium-high frequency transformer, can aggravate the difference of the leakage inductance of every lead in the several paralleled conductor lead, in case can cause the electric current difference of every lead in the several paralleled conductor lead very big in actual use; Cause when serious that solid conductor damages in early days in the medium-high frequency transformer input winding, influence the useful life of transformer.
Summary of the invention
Technical problem to be solved by this invention is: provide the less medium-high frequency transformer of a kind of electric current difference that can make every lead multiple conducting wires and around input winding current equalizing method.
For addressing the above problem; The technical scheme that the present invention adopts is: the multiple conducting wires of medium-high frequency transformer and around input winding current equalizing method; Comprise at least two medium-high frequency transformers; At first respectively with the output short circuit in winding of each medium-high frequency transformer, the inductance value that records every lead in the input winding of each medium-high frequency transformer promptly is the leakage inductance of this root lead; In the input winding of each medium-high frequency transformer, choose a lead then, multiple conducting wires is connected, and make the leakage inductance of the lead after the series connection suitable.
The multiple conducting wires of medium-high frequency transformer and around input winding current equalizing method; Comprise two medium-high frequency transformers; The input winding of each medium-high frequency transformer comprises three leads; At first respectively with the output short circuit in winding of two medium-high frequency transformers, the inductance value that records every lead in the input winding of two medium-high frequency transformers promptly is the leakage inductance of this root lead; The lead of in the input winding of a medium-high frequency transformer, choosing the leakage inductance minimum in the input winding of the maximum lead of leakage inductance and another medium-high frequency transformer then is in series; Leakage inductance in the lead that in the input winding of a medium-high frequency transformer, to choose a leakage inductance be median and the input winding of another medium-high frequency transformer is that the lead of median is in series; The lead of in the input winding of a medium-high frequency transformer, choosing the leakage inductance maximum in the input winding of the minimum lead of leakage inductance and another medium-high frequency transformer is in series.
The invention has the beneficial effects as follows: the multiple conducting wires of above-mentioned medium-high frequency transformer and around input winding current equalizing method; It is implemented conveniently, implementation result is good; It can make the electric current difference of every lead less; Can satisfy the current-sharing of each winding of medium-high frequency transformer, improve the useful life of medium-high frequency voltage device.
Description of drawings
Fig. 1 is a principle schematic of the present invention;
Embodiment
Below through specific embodiment to the multiple conducting wires of medium-high frequency transformer of the present invention and around input winding current equalizing method do further to describe in detail.
As shown in Figure 1; In the present embodiment, comprise two medium-high frequency transformers, the input winding of each medium-high frequency transformer comprises three leads; At first; With the output winding A2 side short circuit of medium-high frequency transformer, the leakage inductance of three leads that records the input winding A1 side of medium-high frequency transformer is L11, L12, L13, wherein L11＞L12＞L13; With the output winding B2 side short circuit of medium-high frequency transformer, the leakage inductance of three leads that records input winding B 1 side of medium-high frequency transformer is L21, L22, L23, wherein L21＞L22＞L23;
The lead L23 that in the input winding of a medium-high frequency transformer, chooses the leakage inductance minimum in the input winding of the maximum lead L11 of leakage inductance and another medium-high frequency transformer then is in series; Leakage inductance in the lead L12 that in the input winding of a medium-high frequency transformer, to choose a leakage inductance be median and the input winding of another medium-high frequency transformer is that the lead L22 of median is in series; The lead L21 that in the input winding of a medium-high frequency transformer, chooses the leakage inductance maximum in the input winding of the minimum lead L13 of leakage inductance and another medium-high frequency transformer is in series.The leakage inductance of the lead after the series connection is respectively L11+L23, L12+L22, L13+L21, and its leakage inductance is suitable.
The above embodiments are the principle and the effect thereof of illustrative the invention only, and the embodiment of part utilization, but not is used to limit the present invention; Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the invention design, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (1)
- The multiple conducting wires of medium-high frequency transformer and around input winding current equalizing method; It is characterized in that: comprise two medium-high frequency transformers; The input winding of each medium-high frequency transformer comprises three leads; At first respectively with the output short circuit in winding of each medium-high frequency transformer, the inductance value that records every lead in the input winding of each medium-high frequency transformer promptly is the leakage inductance of this root lead;The lead of in the input winding of a medium-high frequency transformer, choosing the leakage inductance minimum in the input winding of the maximum lead of leakage inductance and another medium-high frequency transformer then is in series; Leakage inductance in the lead that in the input winding of a medium-high frequency transformer, to choose a leakage inductance be median and the input winding of another medium-high frequency transformer is that the lead of median is in series; The lead of in the input winding of a medium-high frequency transformer, choosing the leakage inductance maximum in the input winding of the minimum lead of leakage inductance and another medium-high frequency transformer is in series, and makes the leakage inductance of the lead after the series connection suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104037092A CN102446621B (en) | 2011-12-08 | 2011-12-08 | Flow equalizing method for input windings parallelly-wound by plurality of leads for medium high frequency transformers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104037092A CN102446621B (en) | 2011-12-08 | 2011-12-08 | Flow equalizing method for input windings parallelly-wound by plurality of leads for medium high frequency transformers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102446621A CN102446621A (en) | 2012-05-09 |
| CN102446621B true CN102446621B (en) | 2012-11-28 |
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| CN2011104037092A Active CN102446621B (en) | 2011-12-08 | 2011-12-08 | Flow equalizing method for input windings parallelly-wound by plurality of leads for medium high frequency transformers |
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Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101369741B (en) * | 2008-07-09 | 2011-05-18 | 南京航空航天大学 | Apparatus and method for electric voltage equalization of accumulator units connected in series |
| CN102013315A (en) * | 2010-07-12 | 2011-04-13 | 吴江市变压器厂有限公司 | Method for self conversion of composite conductors |
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