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Half-metallic nature has been experimentally reported for some Cobalt (Co)-based full Heusler alloys, such as Co2MnSi [1], Co2(Fe-Mn)Si [2], Co2Fe(Al-Si) [3]. As has been reported in references [2, 3], it is effective to tune the material composition using a “4th element” for maximizing the spin polarization of the conduction electron. At the same time, such a 4th element sometimes increases the exchange...
This paper presents a successful automatic voltage regulation of high-efficiency interior permanent-magnet (IPM) synchronous generators for pico-hydro power generation system. A 1-kW 4-pole V-type IPM generator with low voltage regulation is used for laboratory test in stand-alone hydro energy conversion system. It has been found from experimental results that the constant output voltage is supplied...
This paper presents a numerical analysis method to accurately predict the steady-state and transient performance of a single-phase capacitor-run permanent-magnet motor with skewed rotor slots. Two-dimensional time-stepping finite-element analysis has been used to successfully predict the steady-state and dynamic transient performance of the prototype motor by using a multislice model. The agreement...
This paper presents the novel starting performance analysis for a single-phase capacitor-run permanent magnet motor with skewed rotor slots. 2-D time-stepping finite element analysis has been used to successfully predict the starting performance of the prototype motor by using a multislice model. The agreement between computed and measured results of the prototype motor validates the proposed analysis...
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