In compact electric traction machines, the technology used for the stator winding is key to meeting high performance and efficiency requirements at reasonable cost. Thus, Vitesco Technologies has developed a specific process to manufacture stator wave windings. The endless winding by VT concept offers advantages when applied to designs with a high number of winding layers. For High speed e-Axle Drives it has proven beneficial to apply stator wave winding concepts with a high copper slot fill factor of between 60 and 70 % and short winding heads to ensure the targeted compact design. A perfect fit between copper conductor and stator slot ensures an optimal heat dissipation, which in turn facilitates very high and permanently usable stator current densities. Stator wave windings offer specific advantages for that purpose because they make it feasible to flexibly vary the length of sheet stacks and to apply different winding control switching technologies. Additionally, varying winding layer numbers are easily realized, which increases the choice of possible effective layer counts. A higher number of layers also benefits the frequency-dependent PCUs (AC). Let`s see what`s new in our way of continuous wave winding stator and how we close the gap to Hair Pin stator performance and develop a real alternative for higher number of layers as required today by the market. In this sessions, you will learn more about
- New stator wave winding by Vitesco Technologies in comparisation to state of the art Hair Pin technology
- Endless winding by Vitesco Technologies – Benefits and opportunities for the mass production of new edrives
- Scalable & modular concept
- Latest test results
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