Common-mode voltage, caused by a 2-level inverter, is a source of discharge currents in motor bearings. Due to the capacitive coupling, between the stator winding and the rotor, an image of the common-mode voltage is ...

The number of inverter-fed motors is increasing due to the good controllability of the motor and the cost, which by now is low. As a result of the discrete switching states of the power transistors, the average of the three ...