Whole three-phase core is made of three curved silicon steel belt material through rolling, without clearance and seam. The tank has features of low loss, low exciting current, low noise and others.
The study shows that the third-harmonic flux with a certain value added to the fundamental flux can obviously reduce both coreloss and excitation current.
文中认为当在变压器基波磁通中加入某一幅值的三次谐波磁通后，能显著地降低铁耗和励磁电流。
3
A new method for reducing coreloss and excitation current in transformers that utilizes the fundamental principles of third-harmonic flux modulation is proposed in this paper.