The enormous increase of electrical and electronic components in hybrid and electric vehicles places increasing importance on the electrical distribution system with respect to quality and reliability of data transmission. Distribution systems use different standards of high-speed data transmission. A flood of data has to be processed, reliably transmitted and the system has to avoid interferences and disturbances.
Currently, up to seven CAN bus systems are incorporated into a vehicle. High amounts of data are transmitted by FlexRay and MOST systems, additional USB and Ethernet links. All systems transmit different amounts of data and have different data transmission standards.
This flood of data in vehicles and the high amount of data transmission systems requires complex data management—and equally sophisticated technical hardware. For this reason, dedicated characteristics for electromagnetic interference (EMI) and electric and electronic components in hybrid and electric vehicles are required.
At the beginning of the e-mobility movement, we see additional challenges. Beside the existing 12V electrical system in vehicles, which is required for driver assistance systems, radios, navigation systems and several other features, a high-power electrical/electronic system will be integrated into electric vehicles. This result will be a system requiring 300 to 400V or more.
For the complete article, which describes Delphi's research and simulation for EMI in EVs while discussing cabling and shielding, click here, courtesy of Automotive Designline Europe.
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