Keynote Talk: Electromagnetic Simulation of an Axial Flux Motor

To balance EV motor demands for power density, compactness, weight, and thermal control, engineers have turned to axial flux designs. In this keynote talk from COMSOL Day: Vehicle Electrification, Nirmal Paudel of Veryst Engineering shows how simulation in the COMSOL Multiphysics^® software can be used to optimize these designs.

Paudel shares how he and his team developed five different studies of an axial flux motor — each with unique objectives and limitations — using COMSOL Multiphysics^®: stationary, time domain, and multiphysics analyses and a parametric sweep and optimization.

He then presents two case studies featuring models of a double-stator, single-rotor (DSSR) motor and an offset double-stator, single-rotor (ODSSR) motor. He explains how he determined torque estimates using a custom equation and periodic boundary conditions. He then shows how he used five design parameters in COMSOL Multiphysics^® to optimize the motor designs and compares the surrounding magnetic flux density and torque of the initial designs with the optimized designs. Paudel concludes with a demo in the software, showing how several motor model components are set up.

Nirmal Paudel has worked as a lead engineer at Veryst Engineering, a COMSOL Certified Consultant, since 2022. His background is in electromagnetics and product development, particularly in the power and energy sector.