Dynamics of four-wheel-drive electric vehicle during machine fault condition

The need of carbon dioxide reduction led to increasing interest in the electric car. The shift from conventional to electric cars by simply replacing the internal combustion engine (ICE) with an electric machine might not be the best solution. Thus, new system designs like four-in-wheel drives are evolving. Although generally highly reliable, a failure in the electric machine can lead to dangerous driving situations. Depending on the type of the occurring fault different influence on for example the machine torque can be investigated. Examples for these effects are constant braking torque, torque ripple or blocking of the rotor. This results in possible reduction of driving stability. The road condition and current driving behavior (cornering, acceleration, etc.) influences the driving stability during fault condition. The effects of fault conditions on vehicle dynamics are thus investigated in the publication at hand.