Sectional type high-power high-frequency and high-voltage transformer and sectional winding method thereof

Abstract

The invention provides a sectional type high-power high-frequency and high-voltage transformer. The sectional type high-power high-frequency and high-voltage transformer comprises a magnetic core; an insulating framework covers an outer part of the magnetic core; primary windings and secondary windings are wound on the insulating framework in sequence; insulating layers are wound between the primary winding and the secondary winding. The invention further discloses a sectional winding method of the sectional type high-frequency and high-voltage transformer; on the basis of an original layered design of the primary winding and the secondary winding, between-layer voltage of the primary winding and the secondary winding is further reduced, so that a between-layer insulating index of the primary winding and the secondary winding is reduced. Furthermore, the sectional winding method of the high-frequency and high-voltage transformer can effectively reduce equivalent parasitic capacitances of the primary winding and the secondary winding and an equivalent parasitic capacitance between the primary winding and the secondary winding, so that the conduction of EMI (Electro-Magnetic Interference) noises is reduced. Meanwhile, the invention further provides a section number design scheme of the high-frequency and high-voltage transformer; the size of the high-frequency and high-voltage transformer is easy to reduce and leakage inductance of the transformer is easy to reduce.

Description

technical field [0001] The invention belongs to the technical field of high-frequency and high-voltage switching power supplies, and specifically relates to a segmented high-power, high-frequency and high-voltage transformer. The invention also relates to a segmented winding method for the high-frequency and high-voltage transformer. Background technique [0002] High-frequency high-voltage transformers are power transformers with operating frequencies exceeding 10kHz, which include magnetic cores, primary windings, secondary windings and corresponding insulation configurations. The voltage of the secondary winding of the high-frequency high-voltage transformer is generally very large, so the secondary winding must be required to have high insulation, and insulation is one of the difficult problems in the development process of the high-frequency high-voltage transformer. The current solution is mainly to wind the secondary winding in layers. However, due to the high voltage...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a segmented high-power high-frequency high-voltage transformer, which solves the problems of increased volume and increased leakage inductance caused by the multi-layered structure of the current transformer.

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