阅读说明：本技术 一种具有良好线性度的铁心电抗器 (Iron core reactor with good linearity ) 是由 王辉 郭修华 潘镇滨 方越胜 徐佩剑 谢劲松 于 2021-08-24 设计创作，主要内容包括：本发明公开了一种具有良好线性度的铁心电抗器,包括铁心和绕组,铁心包括上铁轭、下铁轭和心柱,上铁轭和下铁轭均由多片第一硅钢片组成,且通过夹件夹持固定,心柱包括多个上下排列的铁饼,两个相邻的铁饼之间设置有垫片,使得相邻的铁饼之间具有气隙,特点是第一硅钢片为取向硅钢片或无取向硅钢片,上铁轭和下铁轭的磁密范围均为0.6～1.2T,铁饼由多片取向硅钢片和无取向硅钢片中的至少一种硅钢片组成,心柱中的取向硅钢片与无取向硅钢片的重量比值为0.3～0.4,且心柱的磁密范围为0.7～0.95T；优点是保证了铁心电抗器具有良好的电抗值线性度,同时又降低了成本。(The invention discloses an iron core reactor with good linearity, which comprises an iron core and a winding, wherein the iron core comprises an upper iron yoke, a lower iron yoke and a core column, the upper iron yoke and the lower iron yoke are respectively composed of a plurality of first silicon steel sheets and are clamped and fixed through a clamping piece, the core column comprises a plurality of iron cakes arranged up and down, and a gasket is arranged between two adjacent iron cakes, so that an air gap is formed between the adjacent iron cakes; the advantage is that the iron core reactor is ensured to have good reactance value linearity, and simultaneously the cost is reduced.)

1. The utility model provides an iron core reactor with good linearity, includes unshakable in one's determination and winding, unshakable in one's determination include upper yoke, lower yoke and stem, upper yoke with lower yoke constitute by the first silicon steel sheet of multi-disc, and fixed through the folder centre gripping, the stem include a plurality of discuss of arranging from top to bottom, be provided with the gasket between two adjacent discuss for have the air gap between the adjacent discus, its characterized in that: the core column is characterized in that the first silicon steel sheet is an oriented silicon steel sheet or a non-oriented silicon steel sheet, the magnetic density ranges of the upper iron yoke and the lower iron yoke are both 0.6-1.2T, the discus is composed of at least one silicon steel sheet of a plurality of oriented silicon steel sheets and non-oriented silicon steel sheets, the weight ratio of the oriented silicon steel sheets to the non-oriented silicon steel sheets in the core column is 0.3-0.4, and the magnetic density range of the core column is 0.7-0.95T.

2. A core reactor having good linearity as claimed in claim 1, characterized in that: the first silicon steel sheet is an oriented silicon steel sheet, and the magnetic density ranges of the upper iron yoke and the lower iron yoke are 0.75-1.2T.

3. A core reactor having good linearity as claimed in claim 1, characterized in that: the first silicon steel sheet is a non-oriented silicon steel sheet, and the magnetic density ranges of the upper iron yoke and the lower iron yoke are 0.6-0.9T.

4. A core reactor having good linearity as claimed in claim 1, characterized in that: the oriented silicon steel sheet is 30Q120 or 30Q 155.

5. A core reactor having good linearity as claimed in claim 1, characterized in that: the material of the non-oriented silicon steel sheet is 50W 300.

6. A core reactor having good linearity as claimed in claim 1, characterized in that: the gasket is made of ceramic or polytetrafluoroethylene.

Technical Field

The invention relates to a reactor, in particular to an iron core reactor with good linearity.

Background

The reactor is called an inductor, and the reactors in the current market can be divided into two types according to the existence of an iron core: air core reactors and iron core reactors. The iron core reactor has an iron core inserted into a solenoid (coil), and has a larger inductance than an air core reactor, and is widely used in power electronic equipment.

The inductance of the iron core reactor changes along with the change of the magnetic field and is nonlinear. In most cases, it is required that the inductance of the core reactor is substantially maintained, i.e., has good linearity. At present, in order to make the linearity good, the iron cores of many iron core reactors are made of ferromagnetic materials with high magnetic permeability, which makes the cost of the iron core reactors high.

Disclosure of Invention

The invention aims to provide an iron core reactor, which reduces the cost of the reactor on the premise of ensuring good linearity.

The technical scheme adopted by the invention for solving the technical problems is as follows: an iron core reactor with good linearity comprises an iron core and a winding, wherein the iron core comprises an upper iron yoke, a lower iron yoke and a core column, the upper iron yoke and the lower iron yoke are respectively composed of a plurality of first silicon steel sheets and are clamped and fixed through a clamping piece, the core column comprises a plurality of iron cakes which are arranged up and down, a gasket is arranged between every two adjacent iron cakes, so that an air gap is formed between every two adjacent iron cakes, the first silicon steel sheets are oriented silicon steel sheets or non-oriented silicon steel sheets, the magnetic density ranges of the upper iron yoke and the lower iron yoke are 0.6-1.2T, each iron cake is composed of at least one of a plurality of oriented silicon steel sheets and non-oriented silicon steel sheets, the weight ratio of the oriented silicon steel sheets to the non-oriented silicon steel sheets in the core column is 0.3-0.4, and the magnetic density range of the core column is 0.7-0.95T.

Preferably, the first silicon steel sheet is an oriented silicon steel sheet, and the magnetic densities of the upper iron yoke and the lower iron yoke are both 0.75-1.2T.

Preferably, the first silicon steel sheet is a non-oriented silicon steel sheet, and the magnetic densities of the upper iron yoke and the lower iron yoke are both 0.6-0.9T.

Preferably, the material of the oriented silicon steel sheet is 30Q120 or 30Q 155.

Preferably, the material of the non-oriented silicon steel sheet is 50W 300.

Preferably, the gasket is made of ceramic or polytetrafluoroethylene.

Compared with the prior art, the iron core reactor has the advantages that the iron yoke and the core column which form the iron core have different magnetic characteristics and magnetic densities due to the fact that different materials are adopted for combination, the iron yoke and the core column complement each other due to the fact that the iron yoke and the core column have different magnetic characteristics in the range from low magnetic density to high magnetic density, and therefore the iron core reactor is guaranteed to have good reactance value linearity, and meanwhile cost is reduced.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in the figure, the iron core reactor with good linearity comprises an iron core and a winding 1, wherein the iron core comprises an upper iron yoke 2, a lower iron yoke 3 and a core column 4, the upper iron yoke 2 and the lower iron yoke 3 are both composed of a plurality of first silicon steel sheets, and are clamped and fixed through a clamping piece 5 and a pull screw (or a pull plate), the first silicon steel sheets can be oriented silicon steel sheets or non-oriented silicon steel sheets, and when the oriented silicon steel sheets are selected as the first silicon steel sheets, the magnetic density ranges of the upper iron yoke 2 and the lower iron yoke 3 are both 0.75-1.2T; when the first silicon steel sheet is a non-oriented silicon steel sheet, the magnetic density ranges of the upper iron yoke 2 and the lower iron yoke 3 are both 0.6-0.9T; the core column 4 comprises a plurality of iron cakes 41 which are arranged up and down, a gasket (not marked in the figure) is arranged between two adjacent iron cakes 41, so that an air gap 42 is formed between the adjacent iron cakes 41, each iron cake 41 consists of a plurality of oriented silicon steel sheets or non-oriented silicon steel sheets, or consists of a plurality of oriented silicon steel sheets and non-oriented silicon steel sheets in a mixed mode, the weight ratio of the oriented silicon steel sheets to the non-oriented silicon steel sheets in the core column 4 is 0.3-0.4, and the magnetic density range of the core column 4 is 0.7-0.95T.

In the above embodiments, the material of the oriented silicon steel sheet may be 30Q120 or 30Q155, and the material of the non-oriented silicon steel sheet may be 50W 300; in addition, the material of the gasket can be ceramic or polytetrafluoroethylene.

The scope of the present invention includes, but is not limited to, the above embodiments, and the present invention is defined by the appended claims, and any alterations, modifications, and improvements that may occur to those skilled in the art are all within the scope of the present invention.