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This paper presented the loss characteristics of interior permanent-magnet machines (IPMSM) for a fuel-cell electric vehicle. In order to study the loss characteristics of the machine, one prototype machine having 100 [kW] was designed. In the analysis, to consider the harmonic magnetic field and the rotational variation of flux vectors in the core of the machine effectively, we proposed a new harmonic...
Accurate analysis of electrical machinery is of the outmost importance in the design process. Many studies have demonstrated that accurately assessing the behavior of axial flux PM machines is not an easy task, even using FEM analysis. The model proposed in the paper takes into account MMF harmonics, skewing, stator and rotor core losses with traditional and fractional winding layouts. The model is...
This paper presents the results of an investigation focused on the rotor core eddy-current losses of interior permanent magnet (IPM) synchronous machines. First, analytical insight into the rotor core eddy-current losses of IPM machines is developed. Next, major design parameters that have the most significant impact on the rotor core eddy-current losses of IPM machines are identified. Finite element...
In this paper the theory of the salient pole synchronous PM machines further is investigated and extended. Since the theory of this type of electric machines until now is based only on the idealized machines (with sinusoidally variation of the air-gap length), the main motivation of this work was to investigate the influence of the air-gap length (rotor permeance effect) on the performances of this...
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