Electrical Discharge Damage in EV Bearings | Dr. Jonny Hansen | Tribology Webinar скачать в хорошем качестве

Electrical Discharge Damage in EV Bearings | Dr. Jonny Hansen | Tribology Webinar

Electrification has introduced new tribological challenges for electric vehicles (EVs), particularly in bearings where electrical discharge damage (EDD) can occur—even in the full-film lubrication regime. In this TriboNet webinar, Dr. Jonny Hansen, tribology expert at Scania’s Electric Propulsion Development Department, explains why classical tribology models like the Stribeck curve and the lambda (λ) parameter are no longer sufficient for EV drivetrains. He introduces the improved Lambda star (λ) parameter*, details the mechanisms of electrical discharge currents, and discusses effective mitigation strategies such as grounding rings, hybrid bearings, and inverter modifications. Key Topics Covered: Fundamentals of classical tribology and elastohydrodynamic lubrication (EHL) Why EVs face unique bearing damage risks Electrical discharge damage (EDD) vs. electrical discharge machining (EDM) The role of inverters in generating damaging bearing currents Lambda star (λ*): a new predictive film parameter Mitigation strategies for EV and heavy-duty applications Future research opportunities in e-tribology 🔗 Explore more on TriboNet.org: Introduction to Tribology Elastohydrodynamic Lubrication (EHL) Bearing Failures and Mechanisms Lubricants and Additives in EV Applications 👉 Subscribe to the TriboNet YouTube channel for more expert tribology webinars and research insights. Hashtags #Tribology #ElectricVehicles #EVBearings #EDDamage #LambdaStar #ETribology #TriboNet YouTube SEO Keywords (Tags) tribology in electric vehicles electrical discharge damage EV bearings Lambda star parameter tribology EV bearing currents inverter hybrid bearings electric vehicles elastohydrodynamic lubrication EV e-tribology challenges bearing damage electric drivetrain conductive lubricants EV Dr. Jonny Hansen Scania tribology