Coils-Based Measurement System for Soft Magnetic Materials

Magnetic materials are experimentally characterized by various methods, using a large palette of sensors and complex laboratory devices. A laboratory device, based on a coils system and a closed magnetic circuit, is presented in this article, underlining the technical consequences of the coils design and their positioning regarding the studied magnetic core. The coils calibration includes analytical, numerical, and experimental procedures. The measurement system is numerically simulated to study the influence of the leakage magnetic flux on the relationship between the measured magnetic field and the real values inside the magnetic core.