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This paper presents a novel single-phase reluctance generator with low-cost ferrite magnets between adjacent stator teeth. The stator has both 4-pole field and 8-pole armature windings. The armature windings are connected to the input terminals of a single-phase full-bridge rectifier circuit as AC power source. The DC output terminals are connected to the field windings to increase the excited flux...
A-single-phase reluctance generator treated in this paper is a kind of a small steam turbine generator. The stator has both 4-pole field and 8-pole armature windings and the iron core has residual magnetism. The rotor is 4-pole and skewed. The no-load induced voltage waveform is computed by using the finite-element method. The computed values taking skew into account agree well with the experimental...
This paper presents the method to determine the optimum values of the capacitance and rotor-slot skew pitch to maximize the efficiency of a single-phase capacitor-run permanent-magnet motor using the time-stepping finite element analysis and response surface methodology. The optimum values of the capacitance and rotor skew pitch to maximize the efficiency at the rated voltage and output are obtained...
This paper presents a novel commutation analysis of universal motors taking into account the brush-to-bar voltage drop. Time-stepping finite element analysis has been used to compute the brush-to-bar voltage drop of the universal motors, where the measured curve of the brush voltage drop is used instead of that due to the brush-to-bar contact resistance. Computed results of the voltage between a brush...
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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