Title :
The Influence of Network Impedance on Conducted Disturbances Within the High-Voltage Traction Harness of Electric Vehicles
Author :
Reuter, Matthias ; Tenbohlen, Stefan ; Kohler, W.
Author_Institution :
Inst. of Power Transm. & High Voltage Technol., Univ. Stuttgart, Stuttgart, Germany
Abstract :
Currently, automotive traction systems are increasingly being revised from combustion engine drives to electric propulsion. The high power cables of electric vehicles are routed close to various communication, sensor, or control units. This circumstance results in a tightened challenge for the developing engineers, who need to ensure the electromagnetic compatibility of these miscellaneous and adjacent systems. A trial-and-error approach in the development process of electromagnetic interference filters can only be avoided if the influence of the network impedances within the high voltage traction harness on conducted RF disturbances is known. This contribution presents the current methodology of determining the conducted emissions of power inverters for electric driven cars. It highlights the differences between the traditional low-voltage cable wiring and novel high-voltage traction harnesses, and their impact on the network impedances. An adaption of the line impedance stabilization networks used recently to the characteristic impedance of the high-voltage cables applied shows the influence of termination mismatch on conducted emissions within the traction harness. High-voltage components employed in a car are usually supplied by a traction accumulator battery, which acts as transmission line termination. The influence of a battery´s input impedances on disturbances within a component level EMC test setup is shown.
Keywords :
automobiles; automotive electrics; electric impedance; electric vehicles; electromagnetic compatibility; electromagnetic interference; invertors; power cables; traction; automotive traction system; combustion engine drives; component level EMC test setup; conducted RF disturbance; electric driven car; electric propulsion; electric vehicle; electromagnetic interference filter; high power cable; high-voltage cable; high-voltage traction harness; line impedance stabilization network; network impedance influence; power inverter; sensor; traction accumulator battery; trial-and-error approach; Automotive engineering; Batteries; Cable shielding; Electromagnetic compatibility; Impedance; Power cables; Radio frequency; CISPR 25; HV automotive components; conducted emissions; electric driven vehicles; traction harness;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
DOI :
10.1109/TEMC.2013.2273564