Orthogonal iron core type controllable electric reactor with wedge-shaped groove and equivalent magnetic path length calculating method of orthogonal iron core type controllable electric reactor with wedge-shaped groove under direct-current magnetic bias

Abstract

The invention discloses an orthogonal iron core type controllable electric reactor with a wedge-shaped groove and an equivalent magnetic path length calculating method of the orthogonal iron core type controllable electric reactor with the wedge-shaped groove under direct-current magnetic bias. The controllable electric reactor comprises a working iron core and a control iron core with the wedge-shaped groove. According to the controllable electric reactor and the equivalent magnetic path length calculating method, as the wedge-shaped groove is formed in the control iron core, the harmonic content output by the controllable electric reactor can be effectively reduced, the defect that a traditional electric reactor is high in harmonic content is overcome, and the working performance of the electric reactor is improved. Meanwhile, simulation software ANSOFT special for an electromagnetic field is adopted to calculating the alternating current equivalent magnetic path length, data of the magnetic induction intensity on a specific cross section in the orthogonal iron core type controllable electric reactor are derived and processed according to a studied algorithm, and the equivalent magnetic path length is accordingly calculated. By means of the method, errors, caused by unclear magnetization conditions of the internal iron cores, of calculation of the equivalent magnetic path length in a traditional method are reduced, the alternating current magnetization curve of the electric reactor has the higher scientificity accordingly, and guarantees are provided for studying the iron consumption and other characteristics of the orthogonal iron core type controllable electric reactor.

Description

technical field [0001] The invention belongs to the technical field of controllable reactor design, and in particular relates to an orthogonal iron core type controllable reactor with wedge-shaped slots and a calculation method for the equivalent magnetic circuit length under DC bias. Background technique [0002] At present, the orthogonal iron core controllable reactor is a new type of continuously adjustable reactance reactor, and the design of a new structure to suppress its harmonic content is an inevitable requirement for the development of adjustable reactors. Due to the special orthogonal structure, compared with other reactors, the magnetic flux coupling of the orthogonal iron core controllable reactor is more complicated, and the calculation of the equivalent magnetic circuit length is very difficult. Therefore, how to design a controllable reactor with a unique structure and low harmonic content, and use engineering electromagnetic field analysis methods to find a...

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Problems solved by technology

However, for the special structure of the orthogonal iron core controllable reactor, due to the inhomogeneity of the magnetization of the internal material, it is difficult to use the traditional method to calculate the equivalent magnetic path length

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