Browsing: common mode voltage

This technical analysis explores how VFD-induced common mode voltage and parasitic capacitance create destructive shaft currents (EDM) that lead to premature bearing failure, while offering engineering solutions like grounding rings and hybrid ceramic bearings for mitigation.

This engineering guide details the impact of AC traction inverters on railway motor bearings, comparing plasma-sprayed versus hybrid ceramic insulation solutions and outlining maintenance standards like IEC 60349-2 to prevent failure.

This buyer’s guide explains the critical role of insulated bearings in protecting VFD-driven motors, comparing the technical benefits of Plasma-Coated versus Hybrid Ceramic solutions and detailing best practices for installation (DE vs. NDE) to prevent circulating currents.

This comprehensive guide explains the origins of motor shaft voltage in VFD applications, outlines methods for accurate measurement using oscilloscopes, and compares mitigation strategies like grounding rings and insulated bearings to prevent failure.

In modern electric motors—…

Electric motors—especially…