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随着电动汽车技术的高速发展,车内线束的电磁兼容问题越来越明显。文章采用S参数测量线束网络,因为在高频范围内,S参数不受寄生参数的影响,相比Y、Z参数测量更加方便、计算精度更高。将测量得到的频域的S参数通过逆快速傅里叶变换(IFFT)转换到时域,推导出了诺顿等效模型,在此基础上仿真验证二端口线束网络和多端口线束网络建模的正确性。
With the rapid development of electric vehicle technology, the issue of electromagnetic compatibility of the interior wiring harness becomes more and more obvious. The article uses the S parameter to measure the wire harness network. Because the S parameter is not influenced by the parasitic parameter in the high frequency range, it is more convenient to measure the Z parameter than the Y and Z. The calculation accuracy is higher. The measured S-parameters in the frequency domain are transformed to the time domain by inverse fast Fourier transform (IFFT), and the Norton equivalent model is deduced. Based on the simulation, the network model of the two-port harness network and the multi-port harness network are simulated Correctness