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EMC issues of electric drives in automotive applications

: Guttowski, S.; Weber, S.; Hoene, E.; John, W.; Reichl, H.

Automotive EMC Network:
Automotive EMC Conference 2003. Proceedings. CD-ROM : Design and testing for global markets. Marriot-Courtyard Hotel, Milton Keynes, 6th November 2003
Newport Pagnell, Milton Keynes, 2003
Automotive EMC Conference <2003, Milton Keynes>
Fraunhofer IZM ()

From the EMC point of view, the integration of electric drive systems into today's cars represents a substantial challenge. The electric drive system is a new component consisting of a highvoltage power source, a frequency converter, an electric motor and shielded or unshielded high-power cables. Treating this new electric drive system or its components as a conventional automotive component in terms of EMI test procedures and emission limits would lead to substantial incompatibility problems. In this paper the EMC issues related to the integration of an electric drive system into a conventional passenger car are investigated. The components of the drive system have been analyzed being either noise sources or part of the coupling path within the new electrical system of the car. The obtained results can also be used to determine the acceptable noise levels on a high voltage bus of an electric drive system.