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This paper presents no-load core loss analysis of 3-phase energy-saving small size induction motor supplied by sinusoidal voltage. In field-circuit part the distribution and changes of magnetic flux densities of the motor are computed by using time-stepping FEM. Discrete Fourier Transform is used to analyze the magnetic flux density waveforms in each element of the motor model. Rotational aspect of...
This paper presents core loss analysis of 3-phase induction motors used for industry applications. The core loss is affected by the time rate of the change of magnetic flux density. Generally core loss is spread out in stator and rotor core. And, rotor core toss is less than stator core because of constant field flux density of rotor. Tooth core loss density is large than yoke core loss because tooth...
This paper presents the results of an investigation of the effects of broken squirrel-cage bars. In the investigation, a comprehensive time-stepping coupled finite element approach was fully used to compute stator current waveforms, torque, magnetic flux density waveform, the rotor bar currents, and end-ring currents for three cases: no broken bars, one broken bar, and two adjacent broken bars. The...
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