Magnetic modeling of a linear motor using lumped approach

For the design and analysis of an electrical motor, an analytical solution of electric and magnetic fields is barely achieved with the required accuracy. Although well-known finite element analysis (FEM) tools can compute these different multi-physical motor characteristics, coupling them can be difficult and often prohibitive in terms of computational time particularly in optimization processes. The lumped models (LM) offer a good compromises between analytical and finite element design tools, in terms of both accuracy and computation time, which also allows integrating into optimization processes. The paper describes the modeling of a permanent magnet linear synchronous machine (PMLSM) using lumped models. Simulation results are presented and compared with the finite-element method.