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Coveme electric motor slot and battery spacer insulation for high-voltage applications

With motor voltages in many e-mobility applications effectively doubling from the 400V region to 800V or more, one of the issues that arises is preventing breakdown of the insulation within the motor slots, the key stressor being partial discharges. Italian insulation specialist Coveme has developed processing improvements to DuPont Nomex dielectric material capable of withstanding such discharges – improvements that allow the material to be applied at scale by existing production machinery. The company has also launched a new humidity resistant Nomex material for battery cell and module spacers, writes Peter Donaldson.

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bdtronic’s new machine targets the impregnation of windings

bdtronic’s B8650 impregnation machine enhances electrical component manufacturing, targeting the impregnation of windings in rotors, stators and coils used in electric motors.

Deep Insight

Coil windings

Peter Donaldson takes electric machines apart to examine the inner workings of coil windings. At first glance, electric machines are simple. They have one moving part, the rotor, which either rotates in response to an input of electrical energy or puts out an electric current in response to an input of mechanical energy that rotates it.

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BorgWarner offers intelligent wheel torque control

BorgWarner is first-to-market with its electric Torque Vectoring and Disconnect (eTVD) system for battery electric vehicles (BEVs) with launches for Polestar and an additional major European OEM. The eTVD is part of the company’s electric torque

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Nestech takes rapid prototyping of motor cores to a new level

As electrical machine manufacturers strive to squeeze ever more efficiency out of motors and generators, there is a growing need for rapid prototyping to support tests of new core geometries in hardware form to confirm they perform in the way simulations say they should, writes Peter Donaldson.

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Why design-for-manufacture could make Traxial axial flux motors go mainstream

Touted as the future of EV propulsion, axial flux motors are more compact, lighter and offer higher power and torque densities than their radial flux counterparts. Until now, they have been exceedingly hard to build but Traxial, a subsidiary of Magnax, is

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Tackling battery welding challenges with new beam-shaping techniques

A new beam-shaping welding technology has been developed by Cailabs with the aim of significantly improving accuracy and efficiency in the construction of electric mobility parts. This is key to the construction of the battery assembly and is often important for other parts of the vehicle, such as motor hairpins or battery cases.

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RAD Propulsion powers electric commuter boat

RAD Propulsion and Stephens Waring Design have teamed up on a project to launch a 26 ft electric commuter boat in the autumn. Stephens Waring’s client requires an electric-powered vessel offering solid performance and dependability.


In wheel motor development

YASA is working with Domin on an in-wheel motor system that weighs under 2 kg, writes Nick Flaherty. The project with Cranfield University in the UK will create a patented in-wheel motor design using YASA’s axial flux motor and Domin’s digitally controlled hydraulic active suspension. The aim is to develop a motor system that is ten times lighter than the current 12 kg motor package design.


Successful test of aircraft rim motor

Duxion Motors has successful ground tested its patented eJet Motor for electric aviation, writes Nick Flaherty. The successful ground testing of the scaled prototype at Summerside, Prince Edward Island, Canada, included both low-speed and high-speed testing.