Characterization of the no-load operation of quasi-Halbach PM excited T-LSMs

Abstract

The paper is aimed at a dual analytical characterization of the no-load operation of tabular-linear synchronous machines (T-LSMs) equipped by quasi-Halbach magnetized PMs in the mover. To start with, an approach to establish a 2D model based on the air gap flux density formulation is developed. Then, a second approach based on the magnetic equivalent circuit (MEC) modelling of T-LSMs is proposed with the derivation of a numerical procedure dedicated to its resolution. Both analytical models are applied to the prediction of the no-load features: the phase flux linkages, the back-EMFs, and the cogging force. A comparison of the obtained results with those computed by 2D finite element analysis (FEA) highlights the validity of the proposed analytical models.