The 10th International Motors Workshop was an on-line event organized by the European Copper Institute on 16 September 2021, attended by more than 80 participants. A first set of presentations discussed the role of energy efficient motor systems in reducing carbon emissions and enhancing the circular economy. A second part was dedicated to technological innovations, stimulated greatly by the electric transport market.
Watch & Listen
to the Presentation here
Sometimes, innovations follow the inverse route, and a technology that was initially used in a niche market finds its way to the transport sector. This was the case with the Dynamic Flow direct cooling technology for motor windings, as Manuel Hartong (Dynamic E-flow) explained. This principle consists of using hollow wires for the stator windings, through which a cooling medium flows. At high power, the lower filling factor resulting from such windings is more than compensated by the higher cooling efficiency. Initially, this technology was used for niche applications such as vacuum environments, high ambient temperature environments or very high speed motors. Thanks to the high torque densities that can be achieved, its application domain was recently extended to commercial high power electric vehicles. An additional advantage of this technology is that the cooling can be controlled and the temperature gradients in the windings flattened, improving the durability of the stator.
“Direct coil cooling”, by Manuel Hartong – Dynamic E flow