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.

This technical guide explains the destructive physics of “microwelding” caused by electrical arcing in bearings, detailing how VFDs and improper grounding melt raceways and how to prevent this damage.

This technical guide examines the chemical process of electrical grease breakdown in VFD motors, explaining how arc discharge causes thermal cracking and carbonization, and how to distinguish this from mechanical overheating.

This guide analyzes the critical role of hybrid ceramic bearings in 800V electric vehicle architectures, explaining how they prevent electrical failure from SiC inverters, minimize NVH, and extend driving range compared to standard steel solutions.