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The axial flux permanent magnet (AFPM) machines are widely applied in various industrial settings in recent years, because of high energy density, high efficiency and compact construction as compared with other conventional radial flux permanent magnet (RFPM) machines.
Recent studies have indicated that there is a high demand for high-efficiency machines used for home applications, such as washing machines and air conditioners. Such applications require components with high efficiency and high power density such as permanent magnet (PM) machines. In particular, variable-flux PM (VFPM) machines using a low-coercive force magnetic material have been studied extensively...
In this paper, we analyze a permanent magnet synchronous generator (PMSG) with a slotless stator considering the magnetic and mechanical air-gap using the semi-3D analytical method. Characteristic analyses of the PMSG are various methods, such as numerical method and analytical method. The three-dimensional (3D) analysis method is among the various methods, but it requires a long analysis time complex...
Many Types of non-contact magnetic devices(NCMDs) exist, such as eddy current brake(ECB), magnetic coupling(MC), and magnetic gear(MG). When the conductive materials of NCMDs are exposed to time-varying magnetic field, eddy current is induced in the conductive materials. In contrast to the ECB which directly uses eddy current to generate a torque, the MC and MG require analysis of the eddy current...
Owing to their high efficiency and power density, high-speed permanent magnet (PM) brushless machines are emerging as a key technology for applications as varied as spindle drives, centrifugal compressors, turbo-molecular pumps, gas-turbine generator units, and electric/hybrid vehicle traction systems [1].
Tubular permanent magnet machines (TPMMs) are increasingly being employed in industries ranging from transportation, manufacturing, and office automation to material processing, health care, and generation systems, because of their high force density, high bandwidth, virtually zero attraction force, and absence of end windings [1]. The advantages of such a machine are good linearity, no requirement...
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