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The adoption of switching electronic converters for squirrel cage motor drives can lead to some critical issues during operation. Among the others, one of the most deeply investigated problems is the early failures of the stator winding insulation. When the motors are supplied by power electronic converters the stator insulation system is indeed subjected to some peculiar electrical stresses; the...
During the last decade, insulated-gate bipolar transistorbased electronic devices have increasingly been adopted to control the power supply of drives associated with Type I randomwound rotating machines, and new reliability problems have surfaced [1]. Pulse width modulator drives that are associated with these machines produce voltage waveforms having fast rise time fronts, and overvoltages at the...
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