Development of a PCB-Based Field Metric Measurement System for the Rotational Single Sheet Tester

This article introduces a recently developed printed circuit board (PCB)-based field metric measurement system designed for the BH characterization of electrical steel sheets under both uniaxial and rotational magnetization. This innovative design addresses several challenges associated with conventional methods, including issues related to clockwise and counterclockwise (CW/CCW) magnetization, the labor-intensive winding process of B-coils, coil misalignment, and positioning inaccuracies. With enhanced accuracy and repeatability, this system significantly improves the efficiency and reliability of BH characterization, thereby facilitating more precise design and optimization of electrical devices, which can lead to improved performance and energy efficiency. Validation experiments demonstrate that the repeatability and accuracy of measurements obtained with this system have been substantially enhanced compared with traditional field metric measurement systems.