Efficient Electric Powertrain with Externally Excited Synchronous Machine without Rare Earth Magnets Using the Example of the Renault System Solution

Authors

Dipl.-Ing. H. Fennel, Dipl.-Ing. H. Hakvoort,
Dr.-Ing. W. Hackmann, Continental, Nuremberg/Berlin; Dipl.-Ing. A. Vignaud, Dr.-Ing. L. Forin-Crouvoisier, Renault S.A.S., Paris

Year

2012

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 735

Summary

The Renault Fluence Z.E. and Kangoo Z.E. electric vehicles were launched in mass production in 2011 with an innovative electric power-train. The vehicles show high performance, reliability and comfort and this without any emission and nearly no engine noise. The potential market, taken into account driver usage patterns, autonomy and vehicle price, would already exceed three million electric vehicles. The electric powertrain consists of an externally excited synchronous machine and the second generation power electronics developed and produced by Continental. The powertrain ensures a good compromise between efficiency requirements and cost, especially facing the actual fluctuation of the permanent magnet price. Additionally the approach of a compact axle drive unit, including electric motor and gears, is an effective solution to reduce overall system cost. State of the art safety norms are fulfilled for which the independent shutoff paths of stator and rotor are beneficial. Further standardization is the key to reduce costs.

Order Members Login