Instrumentation and Characterization of Mixed GO Electrical Steel Magnetic Cores

This article investigates the performance implications of mixing grain-oriented electrical steel (GOES) grades in a single-phase transformer core through comprehensive characterization and instrumentation. An extensive measurement setup using B-coils and H-coils enables detailed mapping of local magnetic flux density and field strength distributions. Experimental results demonstrate that strategic grade mixing can enhance core performance, with improvements dependent on the magnetic property differences between selected grades. The findings provide insights into local magnetic behavior within mixed-grade cores, contributing to the optimization of power transformer design.