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The paper focuses on the design optimisation and performance evaluation of low remanence Permanent Magnet Assisted Synchronous Reluctance Machines (PMA SynRM) against driving cycles. It demonstrates the impact of different driving cycles, such as the NEDC and Artemis Urban, on the design and attainable energy efficiency of PMA SynRM considered for traction applications through the use of design case...
Thermal design of 6-phase fractional-slot Interior Permanent Magnet (IPM) machine having a novel topology of 18-slot, 8-pole is presented using 2-D electromagnetic finite element analysis (FEA) and lumped parameter thermal model. The paper describes the approach to calibrate loss models, and to validate thermal model using the experimental tests. It discusses the thermal challenges imposed by the...
The split ratio, i.e. the ratio of stator bore radius to stator outer radius, is an important design parameter for permanent magnet (PM) linear machines, as it significantly influences the thrust force capability and efficiency. The optimal split ratio for maximum thrust force is investigated analytically for both surface-mounted PM (SPM) and interior PM (IPM) E-core linear oscillating actuators....
An improved analytical model is developed to predict the electromagnetic performance of a single-phase tubular oscillating permanent magnet actuator. The analytically predicted thrust force, flux-linkage and back-EMF coefficient of an actuator equipped with a quasi-Halbach magnetized mover are compared with results deduced from finite element analyses and measurements. In addition, the influence of...
Several novel linear, either planar or tubular, flux-switching permanent magnet (FSPM) brushless machines with different winding configurations and mover slot/stator pole combinations are proposed and compared, with particular reference to the tubular format. Coil connections are determined from the coil back-EMF vectors. The influence of major design parameters, such as the split ratio, the stator...
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