An analysis on the cable crosstalk characteristics in electric vehicles based on impedance measurement

作者：Guo Yanjie^*; Wang Lifang; Liao Chenglin

来源：Qiche Gongcheng/automotive Engineering, 2014, 36(1): 17-21.

• Cable harness
• Equivalent model
• Frequency dependent parameters
• Frequency-dependent
• Impedance measurement
• Multiconductor transmission line theory
• Signal source
• Terminal loads

In this paper, the cable crosstalk characteristics in electric vehicles are analyzed by using the frequency-dependent parameters of cable harness and the equivalent model for crosstalk system. Firstly, the short-circuit and open-circuit impedances of cables are measured and used to calculate frequency-dependent parameters by applying multi-conductor transmission line theory. Then, a model for single line/twisted-pair is established to approximately describe the crosstalk phenomena between cables in electric vehicle and work out the expression for crosstalk voltage with the frequency-dependent inductances and capacitances calculated for simulation. Finally, both simulation and experiment are conducted, based on which the crosstalk characteristics are obtained by analyzing the effects of the characteristics of signal source, inductive-capacitive coupling and terminal loads.

• 出版日期2014