Iron core, iron core reactor and method

Abstract

The invention provides an iron core, an iron core reactor and a method, the iron core is formed by stacking magnetic conductive sheets, each magnetic conductive sheet is provided with at least one pair of magnetic valves, and a left magnetic valve and a right magnetic valve form one pair of magnetic valves; the magnetic flux path of the iron core on each magnetic conductive sheet is an S-shaped bent path, and the iron core is continuous; all radial linear walking magnetic fluxes of an iron core column where the coil is located at least pass through an air gap of one magnetic valve, and the sum of the lengths of the air gaps of the magnetic valves is equal; a straight line which is parallel to the iron core column in the longitudinal direction and has a certain width is marked between the narrow sections of every two adjacent magnetic valves, and magnetic resistance treatment is conducted on a silicon steel sheet below a line segment. According to the invention, the iron core of the iron core reactor does not need an air gap, and only a few magnetic valves are needed, so that the iron core reactor has good electrical linearity.

Description

technical field [0001] The disclosure belongs to the technical field of iron core reactors, and in particular relates to an iron core, an iron core reactor and a method. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Reactors are widely used in power systems. In order to increase the reactance value of the reactor, an iron core can be added to the reactance coil. In order to obtain the linear characteristics of a reactor with an iron core, the reactor iron core needs to add an air gap. However, the existing air gap structure of the reactor iron core is composed of an iron core cake and an air gap spacer. Because the iron core cake and the air gap Due to the structural characteristics of the block, the iron core reactor with this structure has the problems of large vibration and large noise during operation. [0004] At present, there ...

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Problems solved by technology

In order to obtain the linear characteristics of a reactor with an iron core, the reactor iron core needs to add an air gap. However, the existing air gap structure of the reactor iron core is composed of an iron core cake and an air gap spacer. Because the iron core cake and the air gap The structural characteristics of the spacer, the iron core reactor with this structure has the problem of large vibration and noise during operation

[0004] At present, there are existing documents trying to solve the above problems. For example, Chinese invention patents CN109273212A and CN201911044826.7 propose an iron core structure, iron core reactor and method, which can solve the vibration and noise problems during operation caused by the existing air gap structure. , and have better linearity

The disadvantage is that the iron core reactor needs more magnetic valves to obtain the required linearity

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