Stereo three phase transformer iron core with round section
A three-phase transformer, transformer core technology, applied in the direction of transformer/inductor magnetic core, etc., can solve the problems of three-phase current imbalance, long magnetic circuit, short magnetic circuit, etc., to achieve three-phase current balance, low loss, light weight effect
Inactive Publication Date: 2003-06-04
ZHEJIANG GOLDEN TRIANGLE TRANSFORMER
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Problems solved by technology
Obviously, the disadvantage of the iron core of this structure is that the magnetic circuit is unbalanced, the magnetic circuit of phase A and C is relatively long, and the magnetic circuit of phase B is relatively short, which will lead to unbalanced three-phase current
Therefore, this planar structure is not an ideal structure and needs to be further improved.
Method used
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[0017] As shown in the figure: the three-phase iron core is composed of 3 single-phase iron cores. Each single-phase iron core is composed of a semi-cylindrical upper and lower iron yokes 3, 2 and a semi-cylindrical left and right iron core column to form a rectangle. The three iron core posts 1 of the three-phase iron core are respectively composed of two single-phase iron core posts, and the cross section of the iron core post of each three-phase iron core is circular, and the three iron cores of the three-phase iron core The cross section of the column and the circular center line form an equilateral triangle ABC. The extension line of the semicircular diameter of the cross section of each single-phase iron core column passes through the center O of the equilateral triangle ABC and is wound with it The plane of the steel strip is at an angle of 60 degrees.
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The invention relates to three-phase transformer iron-core, for concreteness that is the stereo three-phase transformer with three identical single phase iron-cores coiled by silicon steel belt, the three iron-core columns are combined together to a equilateral triangle with circular intersecting surface. The transformer made by said iron-core has small magnetic resistance,less iron loss and low noise.
Description
Technical field [0001] The invention relates to a three-phase transformer iron core, specifically a three-dimensional single-phase iron core wound from a continuous silicon steel strip, assembled together to form a three-dimensional iron core column with a circular cross section. Phase transformer core. technical background [0002] The existing three-phase transformer cores are divided into two categories: insert type and winding type. The core column and the iron yoke of the plug-in three-phase transformer core are inlaid and stacked by cutting the horizontal and vertical strips of monolithic silicon steel strips of different widths and shapes. Therefore, the entire three-phase transformer core There are many gaps between the iron core column and the iron yoke, and the magnetic circuit of the transformer core is discontinuous, which causes the magnetic resistance of the iron core to increase, the no-load loss and no-load current of the transformer, and it is also easy to produc...
Claims
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IPC IPC(8): H01F27/24
Inventor 吴茂安
Owner ZHEJIANG GOLDEN TRIANGLE TRANSFORMER