降压式SVG用变压器铁芯结构优化

Optimization of transformer core structure for step-down SVG

针对应用于降压式SVG中的变压器铁芯结构进行了优化研究。通过对铁芯窗口中的铁轭端面阶梯堆叠结构进行调整,实现了降低芯柱某些部分高度的目标,有效减少了铁芯中硅钢片用量,降低了空载损耗。以容量为3500 kVA的变压器铁芯为例,优化后的铁芯结构在保持芯柱截面积不变的前提下,重量相对于常规结构减少了近26 kg/台,空载损耗降低了31 W,为SVG的节能和高效运行提供了有力支持。

In this paper,an optimization design study is carried out for the transformer core structure applied in step-down SVG.The height of some parts of the core column is reduced by adjusting the stepped stacking structure of the yoke end face in the core window,so as to effectively reduce the amount of silicon steel sheet in the core and reduce the no-load loss.Taking the transformer core with a capacity of 3500 kVA as an example,the optimized core structure reduces the weight by nearly 26 kg per unit and the no-load loss by 31 W compared with the conventional structure while keeping the cross-sectional area of the core column unchanged,which provides strong support for the energy-saving and efficient operation of SVG.