Akademik Veri Yönetim Sistemi
Measurement: Journal of the International Measurement Confederation, cilt.263, 2026 (SCI-Expanded, Scopus)
This study presents the modeling and analysis of leakage inductance in small axial flux permanent magnet synchronous machines (AFPMSMs) designed for compact biomedical pump systems, focusing on the influence of core materials under magnetic saturation. Two identical AFPMSMs were manufactured, one using a soft magnetic composite (SMC) stator core and the other with a grain-oriented (GO) steel stator core. Synchronous inductance values were analytically calculated, considering magnetizing, slot leakage, tooth-tip leakage, end-winding leakage, and air–gap harmonic leakage components. These calculations were validated through finite element analysis (FEA) simulations and experimental measurements. Results indicate that the phase inductance was 288.90 µH for the GO steel core and 204.86 µH for the SMC core, with a phase-inductance ratio of 0.709 based on LCR meter measurements. During operation between 2000 and 10,000 rpm and 1–10 mNm, the average inductance ratio was found to be 0.743. While SMC cores demonstrated lower leakage inductance, GO steel cores exhibited higher back-EMF and torque output. This comprehensive analysis highlights the critical role of material properties in AFPMSM performance, providing actionable insights for optimizing machine design in compact biomedical pump systems, such as left ventricular assist devices (LVADs), where axial compactness and thermal suitability are decisive. The study emphasizes the importance of combining analytical, simulation, and experimental approaches to achieve accurate inductance modeling and performance evaluation under saturation conditions.