Electric/hybrid vehicles are prone to problems that result from VFD/inverter control of traction motors. The heart of every electric vehicle is an alternating current (AC) 3-phase traction motor/generator. Yet the batteries that power these motors provide direct current (DC). So, inverters (variable frequency drives or VFDs) are needed to convert DC to AC. But VFDs induce voltages on the shafts motors that can discharge through motor bearings, destroying them through electrical discharge machining and creating electromagnetic interference (EMI or RFI) in vehicle systems.

Proven in over a million installations worldwide, AEGIS® Shaft Grounding Rings channel these damaging currents away from bearings safely to ground, protecting AC traction motors and connected equipment/systems.

And AEGIS® Rings eliminate stray currents that produce EMI/RFI` problems with onboard computer controls, wireless sensors, AM/FM radio reception, Bluetooth communications, and personal electronic devices.