Customer Statement

"We want the name AUDI to be synonymous with leading-edge automotive electronics. The cooperation with TTTech exemplifies AUDI’s new electronics strategy."

Head of Electrical Engineering, AUDI AG

First and Second Generation of Volvo C30 Electric Use TTTech Inverter Safety Unit

First and Second Generation of Volvo C30 Electric Use TTTech Inverter Safety Unit

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.

Customer Statement

"We have chosen the TTTech solution because the company's safety know-how was the perfect fit for our goal to make the Volvo C30 a role model for e-mobility."

Lennart Stegland, Vice President Electric Propulsion Systems, Volvo Car Group

Volvo C30 battery schematic