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Implementation and Test of a Fault-Tolerant Wheel Hub Drive System for an Electric Vehicle

: Oelkers, F.; Krone, T.; Mertens, A.; Rosen, A.


IEEE Vehicle Power and Propulsion Conference, VPPC 2015 : Montreal, Quebec, Canada 19-22 October 2015
Piscataway, NJ: IEEE, 2015
ISBN: 978-1-4673-7637-2 (Electronic)
ISBN: 978-1-4673-7636-5 (USB)
ISBN: 978-1-4673-7638-9 (Print on Demand)
Vehicle Power and Propulsion Conference (VPPC) <2015, Montreal>
Fraunhofer IFAM ()

In electric vehicles with wheel hub drives, fault tolerance of the drives is a desirable feature. This paper reports on design, implementation and tests of a fault tolerant multiphase wheel-hub drive system. Most suitable topologies of motor and converter are selected, and a model-based fault detection is described. In addition, the handling of faults in order to avoid unwanted braking or oscillating torque is discussed. The complete fault-tolerant wheel hub drive is tested on a test bench, and experimental results from a test in a concept car demonstrate the effectiveness of the solution.