Low-noise iron core reactor and preparation method thereof

Abstract

A low-noise iron core reactor and a preparation method thereof are provided. The low-noise iron core reactor comprises an iron core and a coil winding; the iron core comprises a core column, and ironyokes arranged at upper and lower ends of the core column; the coil winding is arranged on the core column; the core column comprises a plurality of core column laminations and core air gap plates arranged between two adjacent core column laminations; and a first curing adhesive layer is arranged between the core column lamination and the core air gap plate, and a second curing adhesive layer is arranged between the iron yoke and the core column lamination. The low-noise iron core reactor preparation method comprises the following steps: step 1: pressurizing and laminating the iron core to make the lamination coefficient>0.97; step 2: applying the curing adhesive between the core column lamination and the core air gap plate, and between the iron yoke and the core column lamination, and drying the curing adhesive; step 3: performing vacuum dipping processing on the iron core to form a cured lacquer layer on the surface of the core; step 4: winding the coil winding with the iron core; step 5: assembling the iron core and the coil winding; and step 6: performing vacuum dipping processing on the iron core and the coil winding as a whole. The technical scheme of the present invention has the advantages of low noise, a stable structure, strong capability of bearing the impact and vibration from the train, and the like.

Description

technical field [0001] The invention relates to reactor technology, in particular to a low-noise iron-core reactor and a preparation method. Background technique [0002] In the field of frequency conversion and current conversion of power electronics, in the DC to AC inverter circuit, due to the current conversion of power electronic devices, large harmonics are generated, and the noise of the reactor is loud and sharp, which affects the comfort of passengers. Especially in the three-phase filter reactor at the back end of the high-power converter of the locomotive (subway), the noise is generally higher than 80 decibels. The structure of the traditional reactor is affected by factors such as hysteresis expansion and vibration, and it is difficult to meet the national standard of less than 70 decibels. Decibel technical requirements. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior...

AI Technical Summary

Problems solved by technology

[0002] In the field of frequency conversion and current conversion of power electronics, in the DC to AC inverter circuit, due to the current conversion of power electronic devices, large harmonics are generated, and the noise of the reactor is large and the sound is sharp, which affects the comfort of passengers.

Especially in the three-phase filter reactor at the back end of the high-power converter of the locomotive (subway), the noise is generally higher than 80 decibels. The structure of the traditional reactor is affected by factors such as hysteresis expansion and vibration, and it is difficult to meet the national standard of less than 70 decibels. Decibel Technical Requirements

Images