Active part of transformer

Abstract

An active part of a transformer belongs to the technical field of transformer. On the basis of the active part of the transformer in the background art, the active part of the invention has following three improvements: 1) a five-core column iron core is used and the iron core is arranged horizontally; 2) the five-core column iron core is spliced by 4m-numbered O-shaped iron frames which are formed by furling the amorphous alloy strips and are arranged side by side, wherein m is 1, 2, 3 or 4; and 3) each winding contains n-numbered low-voltage coils and n-numbered high-voltage coils, n is 1, 2, 3 or 4; and the low-voltage coils and the high-voltage coils of each winding are successively sleeved on the corresponding core columns in an alternative arrangement manner, n-numbered low-voltage coils are connected in series to form a low-voltage winding, and n-numbered high-voltage coils are connected in series to form a high-voltage winding. The active part of the transformer has the advantages that the electromagnetic properties of the iron core are stable, and the transformer with the active part has low no-load current, less no-load loss, low noise and high operating efficiency during operation.

Description

technical field [0001] Transformer body refers to the combination of transformer core and winding. The invention relates to a transformer body, belonging to the technical field of transformers. Background technique [0002] The traditional transformer body contains iron core and winding. The iron core is generally made of silicon steel sheets. The iron core contains core columns, and the windings are respectively set on the core columns. On the low voltage wire pack. The transformer adopting the transformer body has the following disadvantages: [0003] 1. The iron core is generally placed in the upright manner of the core column. The self-weight of the iron core and the weight of the winding make the supporting surface of the iron core bear greater stress, and the magnetic domains in the silicon steel sheet will change, causing the transformer to run. The hysteresis loss of the core increases and the core emits larger noise. [0004] 2. The iron core provides a magnetic...

AI Technical Summary

Problems solved by technology

[0003] 1. The iron core is generally placed in an upright manner. The self-weight of the iron core and the weight of the winding make the supporting surface of the iron core bear greater stress, and the magnetic domains in the silicon steel sheet will change, resulting in the transformer running. The hysteresis loss of the core increases and the core emits a larger noise

[0004] 2. The iron core provides a magnetic path for the transformer. When the silicon steel sheets are stacked to form the magnetic path of the iron core, there will be gaps at the butt joints of the sheets in the iron core, which is equivalent to the intervention of other media in the magnetic path, resulting in hysteresis , resulting in a large no-load current of the transformer, a large no-load loss and a decrease in the operating efficiency of the transformer

Since the low-voltage wire package is in the leakage magnetic field, the interaction between the leakage magnetic field and the current-carrying low-voltage wire package causes the low-voltage wire package to be subjected to a huge electromagnetic force perpendicular to the central axis of the core column, forcing the low-voltage The wire package shrinks and deforms inwardly, and the deformed low-voltage wire package violently hits the iron core column, and the stress caused by the impact force acts on the iron core column, which reduces the stability of the electromagnetic properties of the iron core

This decrease in stability is permanent and once damaged cannot be undone

This decrease in stability leads to an increase in the no-load current of the transformer, an increase in no-load losses and a decrease in operating efficiency

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