Stability of an electric vehicle with permanent-magnet in-wheel motors during electrical faults
Artikel i vetenskaplig tidskrift, 2007
permanent-magnet type during a class of electrical faults. Due to the constant excitation from the permanent
magnets, the output torque from a faulted wheel cannot easily be removed if an inverter shuts down, which directly
affects the vehicle stability. In this paper, the impact of an electrical fault during two driving scenarios is
investigated by simulations; using parameters from a 30 kW in-wheel motor and experimentally obtained tire data.
It is shown that the electrical fault risks to seriously degrading the vehicle stability if the correct counteraction is
not taken quickly. However, it is also demonstrated that vehicle stability during an electrical fault can be maintained
with only minor lateral displacements when a closed-loop path controller and a simple method to allocate the
individual tire forces are used. This inherent capacity to handle an important class of electrical faults is attractive;
especially since no additional fault-handling strategy or hardware is needed.
permanent-magnet motor
Control system
electrical failure
in-wheel motor
inverter
Författare
Mats Jonasson
Chalmers, Tillämpad mekanik, Fordonsteknik och autonoma system
Oskar Wallmark
Chalmers
World Electric Vehicle Journal
2032-6653 (ISSN)
Vol. 1 100-107Ämneskategorier
Farkostteknik