Central Platform ECU for Advanced Driver Assistance
AUTOSAR Safety Software
Full control of the enormous torque generated by an electric motor is – also in case of failure – of crucial importance, due to the typical lack of a possibility to interrupt the power flow mechanically. Because of this Volvo Car Group has chosen the Inverter Safety Unit (ISU), an advanced safety control unit from TTTech, for both generations of the Volvo C30 Electric. This car proves that there must not be any compromise in terms of driving pleasure, comfort and of course safety regarding electric cars compared to petrol powered vehicles.
TTTech's ISU uses a special sensor system and innovative algorithms to calculate the actual torque and to detect errors independently that could cause safety goals to be breached. If the deviation between the target and the actual torque becomes too big, the safe state of the electric power train is entered through internal and external shut-off paths. The ISU can be integrated into the power train as a self-contained monitoring unit or into the inverter itself.