Abstract
In this paper, a new dual stator linear permanent-magnet (PM) vernier (LPMV) machine with toroidal winding is proposed and analyzed. The proposed machine enjoys the advantages of less copper usage and copper loss without sacrificing the thrust force performance. For a fair comparison, the proposed machine is designed with the same geometrical parameters based on the conventional dual stator LPMV machine with concentrated winding. Finally, the electromagnetic performances of the proposed machine and the conventional one are compared and analyzed by using finite element method, verifying that the proposed machine with the low copper loss can obtain high force density.
Highlights
Due to the merits of high torque/force density, permanent magnet (PM) vernier (PMV) machines have been picked up as the most appropriate solution for the cost effective applications.[1,2,3] Recently, various PMV topologies have been proposed.[4,5] Ref. 6 illustrated that the torque of the PMV machine with integral slot distributed windings was higher than that of the fractional slot concentrated windings one
The aim of this paper is to propose a dual stator linear PMV (LPMV) machine with the toroidal winding to reduce copper usage and loss without scarifying the force capability
To more directly compare the two dual stator LPMV machines, the conventional machine is called as C-machine for short in the following content while the proposed machine can be described as P-machine
Summary
Due to the merits of high torque/force density, permanent magnet (PM) vernier (PMV) machines have been picked up as the most appropriate solution for the cost effective applications.[1,2,3] Recently, various PMV topologies have been proposed.[4,5] Ref. 6 illustrated that the torque of the PMV machine with integral slot distributed windings was higher than that of the fractional slot concentrated windings one. To solve the contradictory problem, an outer rotor PMV machine with toroidal winding was proposed and verified to have the advantages in the end winding length and torque density compared to regular PMV machines.[7] The aim of this paper is to propose a dual stator linear PMV (LPMV) machine with the toroidal winding to reduce copper usage and loss without scarifying the force capability. The electromagnetic performances, such as the back electromotive force (back EMF), force density, copper loss and inductance, will be investigated by using finite element method between the proposed and the conventional machines
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