Motor

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Heraeus reduces gap in stacked rare-earth magnets in ‘game-changer’ for motor design

Heraeus High Performance Coatings has launched an innovative process for laminated rare-earth metal magnets that boosts performance and manufacturing efficiency, which is crucial for high-power electric motors.

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Schaeffler’s high-performance ball bearing offers better range

They literally move the world as no powertrain can do without bearings ─ be it electric cars, hybrid vehicles or internal combustion engines. Schaeffler has now developed a special high-performance ball bearing with an integrated centrifugal disc.

Focus on...

Motor control

Nick Flaherty explains the various ways to create the perfect sine wave to maximise the efficiency of electric motor control Improving the efficiency of e-mobility motor control is a key focus for developers. Design technologies to squeeze the last microamp out of the battery can boost the range of EVs significantly, while improving the efficiency of the motor control can reduce losses, cutting the amount of thermal management needed and so reducing the complexity and weight of a motor.

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Axial flux motors

Peter Donaldson canvasses expert opinions on the decisions to be made on whether to choose an axial flux motor for a given application Axial flux (AF) motors are attracting a great deal of attention and engineering effort in the e-mobility arena, and for good reasons. Different motor topologies – such as radial and axial flux – are...

Deep Insight

Electric motors for aircraft

Developments in motors for e-aircraft are becoming intertwined with issues of energy storage and certification. Nick Flaherty reports There are many different designs for motors being developed for a variety of electric aircraft platforms, from vertical take-off air taxis to 100-seaters with a flying time of an hour or so for regional flights.

In Conversation

Marko Lehtimaki

The CTO at Verge Motorcycles tells Rory Jackson why rider comfort is more important than aesthetics in its hubless direct-drive e-bike The riding experience is important in consumer EVs, especially electric motorbikes. Persuading veteran riders to go electric is far more than a matter of mitigating range anxiety, as the bikes are ridden for...

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GKN Automotive unveils new off-the-shelf electric drive unit concept

GKN Automotive has unveiled a plug-and-play e-drive concept designed for niche EV players and conversion companies. GKN says the eCrate concept is the basis for a cost-effective modular e-drive system using market-proven technology in an off-the-shelf format.

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Elinta Motors unveils third-gen 400 and 800 V powertrains

Elinta Motors has launched its third-generation 400 and 800 V systems. The 400 V version is aimed at light to medium-duty vehicles, and features a 160 kW motor and up to 168 kWh with four battery packs.

Grid

Additive manufacturing advance in stator production

Researchers in the US and UK have used additive manufacturing (AM) to develop a 3D-printed motor with materials previously considered too brittle to use (writes Nick Flaherty). The researchers, at the University of Sheffield in the UK and the University of Wisconsin-Madison in the US, have developed a 10 kW prototype motor that they are scaling up to 40 kW for e-mobility applications.

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Helix announces success of aerospace electric propulsion demonstrator project

Motors and inverters manufacturer Helix has announced the completion of its direct drive scalable aerospace electric propulsion demonstrator technology project. Known internally as the XBS, the project ran in partnership with the UK’s Midlands