Abstract
This paper presents a novel flux-modulated linear motor (FMLM) with Halbach permanent magnet (PM) arrays for rope-less elevator applications. The new structure with iron segments can modulate the magnetic field and serve simultaneously. In addition, Halbach PM arrays in both the outer mover and inner mover are used to increase the output force, machine efficiency and reduce the cogging force. Compared with the conventional counterparts, the proposed FMLM transmits a relatively high force density and low force ripple. Finally, the electromagnetic performance is analyzed quantitatively through finite element analyses (FEA), and the structural parameters of the LM are optimized by the coupling of genetic algorithm (GA) and FEA.
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