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Snow problem for torque software

Porsche Engineering has developed a torque control system for EVs that provides stability in environments such as snow without the need for additional sensors (writes Nick Flaherty). An electric all-wheel-drive vehicle with multiple motors has a key advantage in allowing variable distribution of the drive power every millisecond. This compares to a conventional all-wheel-drive vehicle, where the power is...

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Cutting edge power analysis

Testing and validation of e-drives is a vital element of electric vehicle development, and Japanese manufacturer Yokogawa hopes its latest WT5000 power analyser will be a potent tool for engineers involved in such work. The manufacturer states...

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Gearbox offers e-drive options

Drexler Automotive has developed a modular multi-speed gearbox for EVs (writes Nick Flaherty). Working with German design house Sala Drive, the gearbox has up to 922 Nm input torque, up to 580 kW input power and optional single or dual e-motor drives on the same axle. There is also a move to two-speed transmission powertrains to increase the...

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Combat-ready lithium power

Epsilor has developed a 6T lithium iron phosphate battery for the military that provides an energy density of 2.76 kWh (writes Nick Flaherty). The ELP-24V2740Wh-6T LFP 24 V battery has a lifecycle of more than 3500 charging cycles and improved safety through a high thermal runaway onset temperature and a lower probability of igniting if crushed or...

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‘Full stack’ monitoring system

Fleetonomy has developed an end-to end fleet management system for EVs that includes system data (writes Nick Flaherty). The ‘full stack’ system is based in the cloud and manages the performance and operation of fleets of electric cars. It is currently being used in a project in London called HAVN with a fleet of...

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Interface for standard EV chargers

Delta-Q Technologies has launched a standards-based vehicle charge interface module (VCIM) for AC charging stations (writes Nick Flaherty). The hardware works with Delta-Q’s recently released stackable charging system (SCS) to include compatibility with standard EV supply equipment (EVSE). The module manages the AC current limits in the EVSE and communicates that data to the ‘master’ charger of the...

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E-bike from Nepal uses Ion cloud

Battery management technology developer Ion Energy is working with Yatri Motorcycles in Nepal on an electric motorbike design (writes Nick Flaherty). The bike, called Project Zero, is built from carbon fibre and uses a 30 kW motor running off a 6 kWh lithium-ion battery pack that provides a range of 230 km (150 miles) from...

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Schottky diodes start to motor

Schottky barrier diodes (SBDs) operating at 200 V and with low leakage current are being increasingly used for hybrid and full electric powertrains and inverters (writes Nick Flaherty). There is currently a strong effort towards mechanical integration in 48 V hybrid drive systems, by combining the motor and peripheral circuits...

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Fifth-gen cell voltage monitors

Smart Test Solutions has launched its fifth generation of cell voltage monitoring (CVM) systems for fuel cells, batteries and electrolysis for hydrogen generation (writes Nick Flaherty). This latest version has an extended temperature range of up to 105 C, up from the previous 85 C. The power supply range has also been extended. Instead of using a 5 V supply...

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Gear IC has traction

Allegro Microsystems has launched the industry’s first gear-tooth sensor IC to provide incremental position data for traction motors (writes Nick Flaherty). The ATS17501 provides high-speed switching up to 40 kHz to directly measure rotating ferrous gears up to 30,000 rpm, and provides an incremental encoded output...