Today on EV Engineering
What causes bearing currents in EV motors and how engineers prevent them
An electric vehicle (EV) traction inverter can drive unwanted current through the motor bearings. Its switching creates voltage on the motor shaft, even without a direct electrical connection between the windings and rotor. If the voltage across a bearing exceeds the insulating capability of its lubricant film, a brief electrical discharge pits the bearing surfaces.…
GaN traction inverter technology moves into EV demonstrator
VisIC Technologies and AVL have integrated VisIC’s gallium nitride (GaN) power modules into an electric vehicle (EV) demonstrator, moving the technology from laboratory and dynamometer testing into a complete vehicle environment. The project combines a GaN traction inverter with a high-speed e-axle, power electronics, and vehicle control systems to evaluate the technology in an electric…
New inverter technology cuts motor voltage overshoot by more than 90%
Hillcrest Energy Technologies has reported peer-reviewed test results showing that its zero-voltage-switching (ZVS) inverter technology reduced motor-terminal voltage overshoot by more than 90% compared with a conventional hard-switched silicon carbide (SiC) inverter. The research, originating in electric vehicle (EV) traction applications, also demonstrated lower high-frequency electromagnetic interference (EMI). The findings are documented in a paper…
ABS introduces 800-V Aventor battery platform
American Battery Solutions (ABS) introduced its Aventor high-voltage lithium-ion battery platform at The Battery Show North America (Booth 5400). Designed for commercial electric vehicles (EVs), industrial equipment, and specialty applications, the BABA-compliant platform combines an 800-V architecture with two battery pack configurations for different installation requirements. Aventor provides 113 kWh of energy, 358 kW of…
Arkema highlighting advanced battery materials at The Battery Show
Arkema is showcasing materials for electric vehicle (EV) battery manufacturing and stationary energy storage applications at The Battery Show North America 2026 this week in Detroit, MI (Booth 2714). The company’s solutions include electrode binders, thermal management materials, and technologies designed to improve battery performance, safety, and manufacturing efficiency. Arkema’s Incellion acrylic binders are designed…
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What causes bearing currents in EV motors and how engineers prevent themAn electric vehicle (EV) traction inverter can drive unwanted current through the motor bearings. Its switching creates voltage on the…
Probing considerations for double pulse testing SiC devices and modulesEditor’s note: Silicon carbide (SiC) power devices are widely used in electric vehicle (EV) traction inverters and other high-voltage power…
Five trends shaping conductive additives in batteriesConductive additives make up a small portion of a battery electrode, yet they play a significant role in cell performance.…
How do two-level and three-level inverter topologies compare in EVs?Whenever an electric vehicle (EV) battery bus exceeds 400 V, it poses powertrain design challenges for engineers. One of the…
How does fault-tolerant control keep an EV operating after a sensor failure?The rotor in an electric vehicle (EV) traction motor delivers torque through the motor shaft to the drivetrain. A rotor-position…
How motor selection shapes system performanceElectric motor selection often starts with datasheet ratings like peak power, torque, and speed range. These values are required for…
Why e-axle fluids have become an EV engineering problemElectric vehicle (EV) drive units keep getting smaller and more integrated, and that’s changed what the fluid inside them has…
How to catch EV faults before they become failuresMost electric vehicle (EV) battery failures do not happen out of nowhere. Long before a pack trips into a protective…
How do busbar design and stray inductance affect EV power electronics?Silicon carbide (SiC) or gallium nitride (GaN) switching operations are limited by the busbar stray inductance because the inductance is…
Engineering reliable charging hubs for autonomous EV fleetsAutonomous ride-hailing fleets need somewhere to recharge between trips, and that’s often a dedicated charging hub rather than a public…
How is EV charging interoperability tested?A connector that physically fits an electric vehicle (EV) inlet does not guarantee a safe, successful charging session. Electrical or…
How to accelerate film capacitor design with simulationEditor’s note: Film capacitors are critical to electric vehicle (EV) power-electronics systems, particularly in dc-link and inverter applications, where component…
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Sakuu develops dry-printed battery cell with carbon fiber electrodesSakuu has produced a fully dry-printed lithium-ion battery cell using carbon fiber and a polymeric current collector (PCC) on its…
ABS introduces 800-V Aventor battery platformAmerican Battery Solutions (ABS) introduced its Aventor high-voltage lithium-ion battery platform at The Battery Show North America (Booth 5400). Designed…
Arkema highlighting advanced battery materials at The Battery ShowArkema is showcasing materials for electric vehicle (EV) battery manufacturing and stationary energy storage applications at The Battery Show North…
New battery architecture could extend EV battery life by over 20%Researchers at Chalmers University of Technology in Sweden, working with industry partners, have investigated a reconfigurable battery architecture that could…
New battery monitoring IC integrates EIS diagnostics for EVsNuvoton Technology Corporation Japan has introduced the KA85010UA, a sixth-generation battery monitoring IC that integrates electrochemical impedance spectroscopy (EIS) for…
Three new thermal adhesives introduced for EV battery applicationsParker Hannifin‘s Performance Materials Division has introduced three new thermally conductive adhesives to its CoolTherm portfolio for electric vehicle (EV)…
Gore debuts MultiVent battery vent for EV applicationsW. L. Gore & Associates introduced its GORE Battery Vents – MultiVent Series at The Battery Show North America 2026,…
Cirba Solutions to discuss EV battery recycling at The Battery ShowCirba Solutions will participate in The Battery Show North America 2026, taking place October 12–15 at Huntington Place in Detroit,…
ProLogium introduces dynamic electrolyte architecture for EV batteriesProLogium has introduced its Dynamic Coordination Network (DCN), a new electrolyte architecture designed to improve lithium-ion transport in electric vehicle…
Comau to showcase EV battery manufacturing automation at The Battery ShowComau will showcase its battery manufacturing automation technologies at The Battery Show North America 2026, taking place October 12–15 at…
New coating process reduces graphite anode carbon footprintNouveau Monde Graphite (NMG) will present a new bio-based coating process for graphite anode material at The Battery Show North…
Vishay to present EV battery and power technologiesVishay Intertechnology will present passive components, semiconductors, and reference designs for electric vehicle (EV) battery and power-conversion systems at The…
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What causes bearing currents in EV motors and how engineers prevent them
An electric vehicle (EV) traction inverter can drive unwanted current through the motor bearings. Its switching creates voltage on the motor shaft, even without a direct electrical connection between the windings and rotor. If the voltage across a bearing exceeds the insulating capability of its lubricant film, a brief electrical discharge pits the bearing surfaces.…
Technology News See More >
Sakuu develops dry-printed battery cell with carbon fiber electrodes
Sakuu has produced a fully dry-printed lithium-ion battery cell using carbon fiber and a polymeric current collector (PCC) on its Kavian manufacturing platform. The 0.5-Ah test cell was manufactured at the company’s research and development facility in Silicon Valley. The cell incorporates dry-printed anode and cathode layers with a carbon fiber veil and a conductive…
