TECHNOLOGIES – Tau Group

E-mobility is a game changer to the extent that it wants it all: smaller and yet more powerful motors, sustainable and yet lighter materials, extremely reliable, with fully traceable parts and yet inexpensive. We love it – as this is exactly what we do and what we provide to our customers in e-mobility - but also in automotive, energy and oil & gas.

To put more power into smaller motor, developers play with variables like higher voltages, greater filling factors or SiC-based frequency modulating inverters. This demands from the insulation greater thermal, electrical, mechanical and chemical resistance to avoid rapid degradation – breaking the boundaries of traditional technology.

We listen to OEM, tier 1 and motor developers in general to provide partial discharge-free winding wire, withstanding corona effects in inverter surges, high vibrations and temperatures over 200 degrees Celsius. Wire that can withstand elongation and deformation from novel designs such as hairpin and needle winding.

In a nutshell, we provide e-mobility with the winding wire it needs.

Our DryCycle process brings long-desired sustainability, performance and reliability to wire coating. It takes all the advantages of enamelling and extrusion and gets rid of their respective disadvantages: combining enamelling’s adhesion, thinness, and thermosetting polymers with extrusion’s solvent-free, dry, additive process, thermoplastic materials and ability to process many geometries.

Eliminating dangerous and pollutive solvents from the wire manufacturing process is a game-changer just as achieving homogenous thicknesses at the edges of rectangular wire, fingerprinting the produced wire and avoiding almost all scrap.

Bringing deep, predictive insight is crucial in state-of-the-art manufacturing. Permanent, non-invasive quality control is the new standard for e-mobility where each component must be checked and traceable. Knowledge instead of guessing. Facts instead of assumptions.

Lilit brings efficiency into one element of the insulation process: curing. Tracking the gradual cross-linking of polymers is key in the manufacturing of components such as winding wire, electrical steel stacks with self-bonding varnish or optical fibre.

Blog

Tau concludes €9m series-B round to scale up production for e-mobility

The round, led by Solvay Ventures, is joined by existing investors including Finindus and happens in parallel with Tau's commercial breakthrough with automotive customers.

Tau brings the new electric motor technology to life

After successfully passing laboratory testing, Tau has now unveiled a new hairpin stator prototype for automotive e-traction developed in partnership with Additive Drives, a manufacturer of state-of-the-art e-motor components.

Fluoropolymers as Primary Insulation in Electric Motors

Fluoropolymers such as PTFE and PFA have the lowest relative permittivity among the insulating polymers and demonstrate superior partial discharge performance compared to commonly used polymers.

Tau Accelerating E-Motor Change

On February 22-24, Tau took part in the 9th Advanced E-Motor Technology Conference in Berlin to discuss the emerging electric motor technologies and the global trends in e-mobility industry.