What are the winding arrangement forms of high frequency transformer?
Release time:
2023-09-20
1. If the voltage of the original winding is high and the voltage of the auxiliary winding is low, the auxiliary winding can be used close to the magnetic core, and then the feedback winding is wound. The winding arrangement of the original winding in the outermost layer is beneficial to the insulation arrangement of the original winding to the magnetic core.
2. If the coupling between the original winding and the auxiliary winding is to be increased, the winding arrangement form of half of the original winding close to the magnetic core, then winding the feedback winding and the auxiliary winding, and then winding half of the original winding on the outermost layer can be adopted, which is beneficial to reduce leakage inductance.
In addition, when the original winding is a high-voltage winding, the number of turns cannot be too small, otherwise, the inter-turn or inter-layer voltage difference is large, which will cause a local short circuit.
For the insulation arrangement, first of all, pay attention to the use of electromagnetic wire and insulation parts of the insulation data level to match the magnetic core and winding allowable operating temperature. Low grade, can not meet the heat resistance requirements, high grade, will increase unnecessary data costs.
Secondly, for the coil wound on the cylindrical magnetic circuit, it is best to use the coil skeleton, which can ensure insulation and simplify the winding process.
In addition, the outermost and innermost layer of the coil, high voltage and low voltage windings should be strengthened insulation. If the general insulation pad only one layer of insulating film, strengthen the insulation should pad 2~3 layers of insulating film.
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