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As the permanent magnet synchronous motor (PMSM) system is the main part of the Flywheel Energy Storage (FES) system which has great influence on the loss of FES system, it is important to improve the efficiency of the PMSM system. This paper presents an analytical nonlinear loss model of the PMSM system which can calculates the PMSM loss and power converter loss together by the torque and speed....
The permanent-magnet synchronous motor (PMSM) with high efficiency and high power density is now attracting more and more attention, which could be largely used in occasions supplied by limited energy and restricted by weight or capacity, for example, the electric vehicles and the solar unmanned aerial vehicles. In this paper, the electromagnetic and thermal issue of a PMSM with high efficiency and...
The external rotor permanent magnet motor has large air gap area, which can get high output torque. In order to reduce the stator core loss and the magnet eddy-current loss caused by high harmonic wave in the air-gap flux, in this paper a new kind of Halbach array form has been presented to achieve more sinusoidal air gap flux wave. Firstly, the optimal Halbach array form of m=3 was obtained by analytic...
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