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This paper describes a multiphase pulse width modulation (MPWM) technique used for controlling the luminance of a solid-state lamp (SSL). In conventional pulse width modulation (PWM) and pulse code modulation techniques, the average HBLED string current is controlled by simultaneously varying the " ON " time duration of each current regulator circuit,(More)
The life time of the windings of the motor is an important factor in induction motor drives. The life time of the windings depends on the enamel coating, needed for isolation, on the windings of the induction motor. The windings of the induction motor heat up every time the induction motor is operated and this results in drastic reduction of the life time(More)
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