Analysis and Evaluation of Electric Motor Topologies for a Kinematic-Electric 48 Volt Powertrain

Authors

Daniel Butterweck, MSc., Dipl.-Ing. Marco Hombitzer, Univ.-Prof. Dr.-Ing. habil. Dr. h.c. Kay Hameyer,
Institute of Electrical Machines (IEM), RWTH Aachen University, Aachen

Summary

For a broad market introduction of electric- and hybrid electric vehicles, the investment costs of the traction battery are still an obstacle. Furthermore, the potential boost and electric recuperation can't be fully utilized without a lifetime reduction of the electrochemical storage system. In this paper, the development of
a powertrain consisting of an infinite variable transmission and an electric high speed motor with an integrated flywheel which tackles these challenges, is described. The advantages and disadvantages of several electric motor topologies for such a system are discussed and results of the motor design process are presented.

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