Highly automated vehicles as of SAE level 3 lack the driver as a fallback during power failures.
In the research project HiBord, funded by the German Federal Ministry of Education and Research, new on-board power supply system topologies were investigated which can handle faults in the power supply system without full redundancy.
- Energy flow control
- Fault isolation
- Network reconfiguration
- Local reflexes and global decisions
Advantages:
- Logic module with μC and FPGA for advanced monitoring algorithms and quick fault reactions
- Scalability by using standardized interfaces
- Modules equipped with sensors for current, voltage, temperature
- Different communication options (CAN, Automotive Ethernet, …)
- Scalable housing and cooling solution due to standardized module dimensions and connectors
Modules:
Many modules are available
- Uni-directional and bi-directional switch modules (12V or 48V)
- 48V/12V DC/DC converter module
- Double layer capacitor module
- Active and passive DLC pre-charging modules
- Logic module with powerful FPGA and µC
… and more, depending on project requirements
Application Example
A combination of an on-board DC/DC converter and a DLC was realized with the building set and is a key component of the HiBord power supply system.
.The system combines a DC/DC converter with a transient power storage and thus can replace a 12V battery in fail-operational scenarios.