Performance Analysis on Axial Flux Permanent Magnet Machines Design during Open-Circuit Operation Using FEA

This paper investigates the design and analysis of an axial flux permanent magnet (AFPM) machine featuring a single stator double rotor (SSDR) configuration. The study aims to achieve efficient electromagnetic performance while reducing numerical errors associated with complex geometries. Initially, the refined triangular mesh analysis established a solid foundation for precise numerical evaluation and effective solutions. Additionally, the evaluation of the central air-gap flux distribution demonstrated strong flux linkage while also identifying opportunities for further refinement. The analysis of induced phase voltage waveforms under no-load conditions revealed balanced sinusoidal profiles, with appropriate phase shifting among the phases, thereby indicating consistent threephase excitation. Simultaneously, the flux linkage analysis showcased symmetric winding, which contributed to smooth torque production. Furthermore, the no-load flux mapping illustrated efficient magnetic flux channeling that prevented localized saturation. The visualization of the magnetic vector field confirmed electromagnetic coupling across both air-gaps. The interrelated findings substantiate the robustness and promising performance of the proposed machine design while advancing research in electric machine development.