A Novel Test Bench for Iron Loss Measurement in Electrical Machines: Design and Experimental Evaluation

To meet the increasing demands for a cost effective and precise design process of electrical machines, particularly in automotive traction applications, efficient and practical methods for core loss characterization are essential. This work presents a novel test bench concept that simplifies the handling of large sample quantities and inherently includes the influence of lamination stacking, without requiring each specimen to be individually wound as in traditional ring core methods. In addition, the setup allows the application of mechanical force aligned with the magnetic flux direction, making it possible to investigate stress related effects on magnetic behavior during operation. Outlined in detail is the complete design methodology, followed by measurement results that confirm the practical viability of the proposed system. With its compact and adaptable construction, the setup supports rapid testing using standard tools and common workshop equipment, offering a compelling alternative for evaluating iron losses in electrical machines under controlled conditions.