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This paper mainly focuses on the analysis of the eddy current loss in permanent magnet (PM) of the surface-mounted PM vernier machine (SPMVM). The eddy current losses under open-circuit, armature reaction and load conditions are detailed investigated by the analytical method and finite-element analysis (FEA). The influence of the pole ratio, which is defined as the ratio of the rotor PM pole-pairs...
This paper compares three high aspect ratio axial field topologies for traction applications employing soft magnetic composite (SMC). The paper examines the following topologies using finite element (FE) method: a torus, a yokeless and segmented armature (YASA), and a single-sided configuration. All the machines are designed to the same specification for a light electric vehicle, and the FE simulations...
This paper deals with a design method of an external permanent magnet (PM) synchronous motor (PMSM) using concentrated winding (wound around one tooth). The machine is used for the electrical motorization of a small urban hybrid vehicle. Such an application leads to strong design constraints, such as weight limitation, high starting torque, compactness etc. To achieve the design of the machine, an...
Modular permanent magnet machines are gaining popularity due to their simple stator construction and machine winding fabrication. In this paper, a multiphase modular permanent magnet machine is proposed to obtain a robust drive system with the feature of fault tolerant capability. By making use of concentric winding on each module, the stator winding structure is simplified with benefit of less end...
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