Flow equalizing method for input windings parallelly-wound by plurality of leads for medium high frequency transformers

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 [0001] The invention relates to an input winding current sharing method in which a plurality of wires of a medium and high frequency transformer are wound in parallel. Background technique [0002] In the case of high current, the input winding of medium and high frequency transformers usually adopts multiple wires wound in parallel to increase the current carrying capacity, but it is difficult to have the same spatial position of the magnetic core when multiple wires are wound in parallel, which will cause multiple wires wound in parallel. The leakage inductance of each wire is inconsistent, especially in the application condition of multiple high-frequency transformers connected in series, which will aggravate the difference in the leakage inductance of each wire in the multiple parallel-wound wires. Once in the actual use process, it will cause multiple parallel-wound The current of each wire in the wires is very different, and in severe cases, it will cau...

AI Technical Summary

Problems solved by technology

[0002] In the case of high current, the input winding of medium and high frequency transformers usually adopts multiple wires wound in parallel to increase the current carrying capacity, but it is difficult to have the same spatial position of the magnetic core when multiple wires are wound in parallel, which will cause multiple wires wound in parallel. The leakage inductance of each wire is inconsistent, especially in the application condition of multiple high-frequency transformers connected in series, which will aggravate the difference in the leakage inductance of each wire in the multiple parallel-wound wires. Once in the actual use process, it will cause multiple parallel-wound The current of each wire in the wires is very different, and in serious cases, it will cause early damage to a single wire in the input winding of the medium and high frequency transformer, which will affect the service life of the transformer

Images