Novel cooling methods using flux-barriers

This paper presents new cooling methods for permanent magnet synchronous machines (PMSM) with flux barriers. For a vehicle powertrain application the permanent magnet synchronous machines is a very popular choice, because of high power density, a high efficiency and the small package. However, this machine is susceptible to suffer insulations failures of coils and demagnetization of magnets under severe thermal condition. Therefore, it is important to have an efficient cooling method for the PMSM to generate high heat dissipation. The configurations of the new cooling methods are presented in this paper. Three different topologies are compared with a standard water cooling jacket configuration. A finite volume Computational Fluid Dynamic (CFD) model is applied to have a very accurate and comprehensive simulation.