Inclined gap type reactor iron core structure and production process thereof

Abstract

The invention discloses an inclined gap type reactor iron core structure and a production process thereof. The iron core structure comprises at least two silicon steel elements, wherein each silicon steel element comprises a plurality of laminated silicon steel sheets, the silicon steel sheets are distributed, a gap is formed between adjacent two silicon steel sheets, a gap plate is arranged in the gap and bonded and fixed with the silicon steel element by an adhesive, the gap is formed in an inclined way, an included angle between the gap and a magnetic path is less than 180 degrees and is not equal to 90 degrees, and the gap plate is arranged in the gap and reclines. The iron core structure is ingenious and practical; with the gap formed in an inclined way, the bonding area of the silicon steel elements and the area of the gap plate are expanded, the magnetic flux density of the gap is reduced by 41.4%, the magnetic potential drop and leakage flux radiation quantitiesof the gap are reduced, and the noise and the loss of the gap are substantially reduced.

Description

technical field [0001] The invention relates to the field of iron core reactors, in particular to an inclined plane air gap type reactor iron core structure and a production process thereof. Background technique [0002] In modern industry, as an indispensable and important component in the field of power electronics, iron core reactors are widely used in harmonic suppression circuits or power compensation circuits of power transmission grids, and are also widely used in electric locomotives, marine ships, new energy, Filter circuits, resonant circuits or current limiting circuits in UPS and other fields. In practical applications, the current flowing through the core reactor is not only a 50Hz or 60Hz sine wave current, but often contains rich harmonics (150Hz~2kHz), high frequency modulation waves (1kHz~20kHz), etc. Due to the structure of the iron core reactor and its application limitations, the reactor will produce various noises, abnormal sounds, vibrations, etc. in a...

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Problems solved by technology

The gaps of traditional reactor iron cores are perpendicular to the direction of the magnetic circuit. In this arrangement, the silicon steel sheet is prone to displacement and vibration in the alternating magnetic field, resulting in noise; secondly, due to the magnetic resistance at the air gap Much larger than the silicon steel sheet, the energy of the magnetic circuit is concentrated at each air gap, resulting in more additional loss due to the leakage of magnetic flux and the leakage of the magnetic force line at each air gap. When the magnetic force line passes through the coil, the loss of the attachment of the coil will increase significantly

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