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In inverter motor drives an increasing fraction of faults is associated to the bearings damages induced by circulating currents. Current flow through the bearings is a consequence of two phenomena which, in turn, may depend on the motor speed. The first one gives rise to a conduction current through the motor bearing if a metallic contact takes place(More)
In inverter motor drives an increasing fraction of faults is associated to the bearings damages induced by circulating currents. In particular, the capacitive couplings between the stator and the rotor give rise to a shaft voltage which, in turn, may produce the breakdown of the lubricating film in the bearings and the associated electric discharge(More)
A spherical excitable cell immersed in an electrolyte and subjected to an electric field is considered to study its behavior for Electro-Chemotherapy Treatments (ECT). The total volume is discretized with a three-dimensional lattice to which an electrical network, modeling both the passive and linear behavior of the external electrolyte and of the cytosol(More)
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