Today on EV Engineering
How do current-sensing errors propagate through EV motor control systems?
Torque decisions in an electric vehicle (EV) traction drive often start from two or three-phase current readings, which leaves little margin for current sensing errors. Field-oriented control (FOC) turns those readings into d-axis and q-axis currents. When one of them drifts, the controller treats the drift as a real change in motor current. In this…
Toyota demonstrates eight-minute hydrogen refueling for heavy-duty trucks
Toyota has demonstrated high-flow hydrogen refueling that can replenish heavy-duty fuel-cell electric trucks in approximately eight minutes, supporting a driving range of up to 450 miles. The technology is being developed with the US Department of Energy’s National Laboratory of the Rockies to improve refueling infrastructure for hydrogen-powered electric trucks. Unlike battery-electric vehicles (BEVs), fuel-cell…
North Carolina launches data-driven EV charging program
North Carolina’s Electric Cooperatives has launched EVConnectNC, a managed charging program powered by WeaveGrid software that uses connected vehicle and charger data to help utilities manage electricity demand from electric vehicles (EVs). The program is designed to shift residential EV charging toward off-peak periods, when electricity demand and power costs are lower. By using information…
CATL introduces dual-battery system for electric heavy-duty trucks
CATL has introduced a dual-battery system for electric heavy-duty trucks that combines a standardized swappable main battery with a separate 77-kWh range-extension battery. The architecture is designed to increase usable battery capacity while maintaining power delivery when the main battery is nearly depleted. The main battery is mounted beneath the truck chassis and is compatible…
Nissan cuts vehicle software investigation time using AI
Nissan Technical Centre Europe (NTCE) has reduced vehicle software investigation time from two weeks to two days using AI-assisted diagnostics and event-driven data collection. Following a year of development and testing, the automaker is expanding the technology across its pre-production vehicle validation process. The system, developed by Sonatus, will become part of NTCE’s standard validation…
FAQs See More >
How do current-sensing errors propagate through EV motor control systems?Torque decisions in an electric vehicle (EV) traction drive often start from two or three-phase current readings, which leaves little…
EV Talk: Designing EV components with end of life in mindMaterial selection plays an important role in the performance of electric vehicle (EV) components, but engineers are increasingly being asked…
Mitigating high-frequency vibration in structural battery packsModern electric vehicle (EV) battery engineering revolves around removing layers of structure so more active cell material fits into the…
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…
Batteries See More >
New sodium-ion cell architecture eliminates conventional anode materialMana Battery is developing an anode-free sodium-ion battery cell using a proprietary liquid electrolyte designed to improve energy density, stability…
Modular BMS supports 12 to 1,500-volt applicationsEberspächer Vecture has introduced GuardIon-IQ, a modular battery management system (BMS) designed to support battery systems operating from 12 to…
Mitigating high-frequency vibration in structural battery packsModern electric vehicle (EV) battery engineering revolves around removing layers of structure so more active cell material fits into the…
Capillary-driven cooling technology targets heat buildup in EV motorsAdeia Inc. has developed a capillary-driven cooling technology designed to improve heat removal within high-power electric vehicle (EV) motors. The…
GMG graphene battery cells achieve 94% energy efficiency during fast-charge testingGraphene Manufacturing Group (GMG) has released new test results showing that its graphene aluminium-ion G CELLS completed 1,000 charge-discharge cycles…
Rivian and Redwood expand EV battery recycling partnershipAmerican automaker Rivian and energy technology company Redwood Materials have expanded their partnership to include the recycling of Rivian’s manufacturing…
Patent granted for pCAM-free cathode manufacturing processDryve Battery Materials Inc. announced that it has received a foundational patent in the Republic of Korea for its pCAM-free…
Researchers develop aluminum anode technology for lithium-ion batteriesResearchers at the Fraunhofer Institute for Manufacturing Engineering and Automation (IPA) and the University of Stuttgart have developed and patented…
ProLogium and Rimac advance solid-state EV battery developmentProLogium and Rimac Technology have completed a battery pack concept mockup as part of their collaboration to develop battery systems…
Battery-swapping technology receives sustainability awardHonda‘s Mobile Power Pack e: (MPP) swappable battery system has received the Sustainability & Circular Economy Excellence Award at The…
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…
Componentry See More >
New redundant position sensor for EV traction motors
TDK has introduced the Micronas HAR 3025, a dual-die magnetic position sensor designed for safety-critical motor control in electric vehicles (EVs). The sensor supports high-voltage traction motor commutation and steer-by-wire systems, where accurate position feedback is essential. The HAR 3025 incorporates two independent sensing dies within a single 4 × 4-mm package. Each die measures…
Technology News See More >
New redundant position sensor for EV traction motors
TDK has introduced the Micronas HAR 3025, a dual-die magnetic position sensor designed for safety-critical motor control in electric vehicles (EVs). The sensor supports high-voltage traction motor commutation and steer-by-wire systems, where accurate position feedback is essential. The HAR 3025 incorporates two independent sensing dies within a single 4 × 4-mm package. Each die measures…
