Research Information System
PHYSICA SCRIPTA, vol.101, no.14, 2026 (SCI-Expanded, Scopus)
Heart failure with preserved ejection fraction (HFpEF) accounts for nearly half of all heart failure cases, yet lacks effective mechanical treatment options. The unique anatomical and physiological features of HFpEF-small ventricular volume and elevated left atrial pressure-necessitate compact, tailored circulatory support systems. We propose a novel axial-flux permanent-magnet synchronous machine (AFPMSM) architecture, designed to deliver up to 3.32 W within a 9.81-cc envelope and optimized for operation at 5200 rpm. The system employs a magnetically levitated rotor to minimize mechanical contact, reduce hemolysis risk, and enhance long-term durability-key requirements for implantable cardiac devices. Simulation results indicate peak efficiencies of up to 81.74% at the defined current density. In addition, we reviewed and compared existing HFpEF-specific assistive devices with respect to performance, size, and clinical applicability, thereby providing a contextual benchmark. Overall, the proposed AFPMSM-based system with maglev technology offers competitive performance and a minimal footprint, making it suitable for minimally invasive implantation and adaptable to varying HFpEF severities.