Multiphysics modeling and optimization of PMSM for high speed operation

In many modern applications like aerospace and automotive, maximizing the power density of an actuator is required to ensure lighter systems. This can be achieved by increasing the rotational speed of electrical machines, which leads to face many constraints, particularly from a mechanical and thermal points of view. Developing multiphysics modeling tools associated to optimization methods is then necessary for sizing high speed machines. The paper presents electromagnetic, mechanical and thermal analytical models of surface mounted PMSMs to ensure pretty precise pre-sizing. Numerical simulations that use the finite element method (FEM) are conducted to validate the analytical findings.