Joint Design of Halbach Segmented Array and Distributed Stator Winding

Abstract

In the past, designers develop analytical models that are useful to size rapidly surface mounted permanent magnet synchronous motor with sinusoidal waves and a high specific power. In order to ensure the assumptions of sinusoidal waves, a joint design of the stator winding and the rotor is presented. First, an Halbach permanent magnet array is optimized to obtain the desired airgap magnetic flux density wave. Then, in order to obtain a surface current density wave consistent with the desired wave, the conductor distribution along the stator bore is determined.

Multidisciplinary Design Optimization of the Actuation System of a Hybrid Electric Aircraft Powertrain

“…In this section, we focus on the modeling of the inverter-fed surface-mounted permanent magnet synchronous machine (SM-PMSM) for high-speed applications. The theoretical backgrounds of the SM-PMSM model are based on the modeling of the open-circuit field and the armature reaction by current surface density [33]. From these theoretical backgrounds, an analytical sizing model based on loadability concepts has been derived [14,34] and has been revisited to be integrated in an MDO process.…”

“…Therefore, in order to optimize the complexity-validity trade-off, a validation of the analytical model has to be performed. In [33], the computation of the airgap magnetic flux density, the no-load back-emf and the torque obtained with this model have been validated by a finite element analysis.…”

“…From the set of sizing variables presented in Table 1, each dimension of the electric actuator can be calculated (see Figure 4): more information is available in [14,17]. This analytical model has been checked by a finite element software [33].…”