Double body series connection type split transformer with high secondary winding no-load voltage balance degree
A secondary winding and no-load voltage technology, which is applied in the field of transformers, can solve problems such as difficulty in satisfying the unbalanced degree of no-load voltage of the secondary winding, large unbalanced degree of the no-load voltage of the secondary winding, and incompletely identical main magnetic fluxes, etc. , to achieve the effect of improving the unbalanced degree of no-load voltage, solving the large unbalanced degree of no-load voltage, and improving the unbalanced degree
Inactive Publication Date: 2013-09-11
BAODING TIANWEI GROUP TEBIAN ELECTRIC
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Problems solved by technology
In actual production, due to the differences in the material, cross-sectional area, joint size and clamping force of the two cores, the final two cores cannot be guaranteed to be exactly the same, and the main magnetic flux of the two cores Not exactly the same, resulting in a large no-load voltage imbalance between the two secondary windings, which is difficult to meet the user's requirements for the no-load voltage unbalance of the secondary winding
Method used
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[0010] The present invention will be further described through the embodiments below in conjunction with the accompanying drawings.
[0011] This embodiment is a single-phase transformer, combined with the attached figure 1 Carry out concrete magnetic circuit analysis explanation to the present invention:
[0012] A dual body series cracking transformer with high no-load voltage balance of the secondary winding. The double body series cracking transformer has two iron cores, one core 1 and two cores 2. The first core is provided with a primary winding one N11, secondary winding 1 N21 and balanced winding 1 Wp1, primary winding 2 N12, secondary winding 2 N22 and balanced winding 2 Wp2 are set on core 2; primary winding 1 N11 and primary winding 2 N12 are connected end to end; balanced winding 1 Wp1 and The balance winding Wp2 has the same number of turns, the same winding direction, and the same position on the iron core, and the head and tail are connected together to form a ...
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The invention relates to a double body series connection type split transformer with a high secondary winding no-load voltage balance degree and belongs to the technical field of transformers. The technical scheme is that two balancing windings are added on two iron cores of the transformer respectively and are identical in number of turns and winding direction, the positions of the two balancing windings on the iron cores are the same, the heads and the tails of the two balancing windings are respectively connected together to form a closed loop, and the balance degree of no-load voltages of two secondary windings is improved. Main fluxes in the two iron cores are automatically adjusted through circulating current between the balancing windings, a difference value of the main fluxes in the two iron cores is reduced, a difference value of induced voltages of the two secondary windings is reduced, and the goal of improving the secondary winding no-load voltage balance degree is achieved. Compared with a double body series connection type split transformer in the background technology, the double body series connection type split transformer effectively solves the problem that the secondary winding no-load voltage unbalance degree is large.
Description
technical field [0001] The invention relates to a dual body series splitting transformer with high no-load voltage balance of secondary windings, belonging to the technical field of transformers. Background technique [0002] The double body series cracking transformer is used in some special occasions, and it is generally required that the no-load voltage unbalance of the two secondary windings be controlled within 2%, sometimes even less than 0.5%. Background technology The dual-body series cracking transformer is composed of two independent single-phase or three-phase transformer bodies with the same magnetic circuit. The primary side winding turns of the two bodies are the same, electrically connected in series, and the secondary side winding electrically independent of each other. In actual production, due to the differences in the material, cross-sectional area, joint size and clamping force of the two cores, the final two cores cannot be guaranteed to be exactly the ...
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Login to View More IPC IPC(8): H01F30/06H01F27/30H01F27/28
Inventor 张亚杰刘新颜李静郑赞赵徐
Owner BAODING TIANWEI GROUP TEBIAN ELECTRIC