a pulse transformer

Abstract

The invention provides a pulse transformer, which comprises an E-type magnetic core formed by a core body and a central column, a primary winding N1, a secondary winding N2, a first auxiliary winding N3 and a second auxiliary winding N4, wherein the primary winding N1 and the secondary winding N2 are wound on two magnetic yokes of the core body respectively, the first auxiliary winding N3 and the second auxiliary winding N4 are wound on the two magnetic yokes respectively, the first auxiliary winding N3 is wound in the direction opposite to that of the primary winding N1, and the second auxiliary winding N4 is wound in the direction opposite to that of the secondary winding N2. Through the first auxiliary winding N3 and the second auxiliary winding N4 which are wound on the two magnetic yokes respectively and wound in the directions opposite to that of the primary winding N1 and that of the secondary winding N2 respectively, a rising edge of the output voltage pulse waveform is obviously reduced, and the sterilization efficiency of a pulsed electric field food sterilization device applying the pulse transformer is improved. Meanwhile, the auxiliary windings are simple in winding mode, the size of the pulse transformer is obviously reduced, and the manufacturing cost is reduced.

Description

Technical field [0001] The invention relates to the field of transformers, and in particular to a pulse transformer applied in the pulse electric field food sterilization technology. Background technique [0002] Pulse transformers are widely used in the field of pulse electric field food sterilization technology. The technologies for generating high-voltage pulses mainly include: pulse transformer technology, Marx generator technology, and laminated line transformer technology using pulse forming line boost. The latter two technologies are mostly used to generate high-voltage pulses above several hundred kV, but the structure is huge and complex, which is not conducive to the miniaturization of the pulse generator system and the high cost, and the application range is limited. At present, the most researched are Tesla transformers with open-circuit cores, tape-wound air-core transformers and partial core-type pulse transformers. Tesla transformers with open cores have high out...

AI Technical Summary

Problems solved by technology

However, when the pulse transformer is applied to the field of pulse electric field food sterilization technology, it often needs to obtain a high output voltage, so the number of winding turns will be limited; considering the production cost, the choice of transformer core will also be limited.

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