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Due to the harmonic content of the distorted supply voltage, the iron losses of PWM inverter fed induction motors are greater than the iron losses measured with sinusoidal supply. The prediction of this loss increase has been the subject of many studies, but it can be still considered as an open research field, in particular when fast and reliable estimation methods are requested. In the paper a previously...
This paper intends to develop a more accurate approach for determining the no-load iron losses in pulse width modulation (PWM) inverter fed induction motors. The proposed method is validated by means of a prototype motor with a plastic rotor cage. The iron losses have been computed by the time-stepping finite element method, both with sinusoidal and PWM supply. The iron losses have then been estimated...
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