In modern electric equipment, especially electric vehicles, inverter control systems can lead
to complex shaft voltages and bearing currents. Within an electric motor, many parts have …

This paper puts into perspective the state-of-the art knowledge on bearing currents and
diagnosis tools, which rely on shaft voltages and bearing currents phenomena. Today, shaft …

Rolling bearings face different damaging effects: Besides mechanical effects, current-
induced bearing damage occurs in electrical drive systems. Therefore, it is of increasing …

Integrated chargers, where the traction inverter is used as the primary charging interface,
have emerged as a solution for reducing the cost and footprint of electric vehicle (EV) …

Electric discharge machining current causes a significant amount of damage to bearings,
producing pits in the rotating elements of the bearing, and ultimately leading to bearing …

In most mechanical and electrical systems, reliability is paramount. Consumers, users and
operators trust that their product will perform properly over its expected lifetime. Electric …

Motor bearings in industrial converter-fed three-phase motors are mostly equipped with
grease-lubricated roller bearings. It is known that under certain operating conditions bearing …

While the cause-and-effect chains of inverter-induced bearing currents have been well
understood today, not much is known about the damage mechanism inside the bearings …

The demand for safer and more reliable drive systems for renewable energy and vehicle
electrification continues to increase, requiring effective ways for the drive motors to …

Shaft voltages and associated “shaft currents” or “bearing currents” have been known since
more than a century on DC and AC motors under classical line operation. More recently with …