Energy and Supply Concepts for Automated Driving

Abstract

Automated driving faces many challenges until its legal and actual deployment. The power distribution of the electric powered functions is a key enabler for automated driving. It has to be fail operational. Several diagnosis tasks, supply sources and switches at key positions have to be implemented to achieve fail-operation-ability for the different levels of automation. This leads to a higher complexity of the electronic circuitry of the switches. Concepts for the power distribution and the electronic circuitry for a semiconductor switch are being shown.

New fail operational powernet methods and topologies for automated driving with electric vehicle

“…Consumer group R 3 represents consumers without safety relevance. The consumers (R 1a , R 2a ) represent redundant safety-relevant consumers for highly automated driving [8,10], such as the control electronics of one of the two brake circuits. The additional channel 2 supplies the other part of the redundant consumers, e.g.…”

“…For example, a component fault in the generator can cause the electrical power supply to fail [10]. As a result, the remaining vehicle components can only be supplied with energy by the battery for a certain period of time [10]. After a certain time, however, no more energy is available in the battery and thus no power supply is guaranteed, which results in a system failure.…”

“…To ensure the safety of passengers and other road users, safety-critical functions must be developed by the vehicle in accordance with the ISO 26262 standard [10], which also applies to the on-board powernet functionality. The on-board powernet must be designed in such a way that in the event of a fault during driving, safety-critical sensors and actuators (e.g.…”

Trends in vehicle motion control for automated driving on public roads

“…Failures in any of the DC/DC converter resulting in a disconnection from the power distribution are happening more often than the requirement for the power distribution in automated vehicles allows. Further different concepts have been discussed and analyzed in [78] and [79]. Even this system does not meet the requirements fully yet.…”

Decentralized Phase Shedding with Low Power Mode for Multiphase Converter

“…If the central controller fails, the function is lost. This represents a SPOF, which can be penalizing in many applications, such as automotive applications, for instance, which must meet rigorous standards [9,10]. In order to solve this problem and offer a fault-tolerant solution, a distributed/decentralized method of control was proposed in [11] and is described in detail in this paper.…”