Development of Distribution Transformers Assembled of Composite Wound Cores

摘要

The present paper proposes the manufacturing of distribution transformers using a novel type of magnetic core which is called composite wound core. A composite wound core is constructed of a combination of conventional and high magnetization grain-oriented electrical steel and its operating principle is based on the flux density non-uniformity of wound cores. The main advantage of distribution transformers assembled of composite wound cores over conventional transformers is the significant reduction of the manufacturing and operating cost.