Research on transfer impedance calculation of high voltage shielded cables for electric vehicles

The high -voltage and high oscillating work characteristics of the high -voltage power line of electric vehicles have led to its serious electromagnetic compatibility problem. As a result, automakers have gradually adopted high -voltage cables with shielding layers. In the study of the shift impedance of the shielding layer, although the test method can test the size of its value more accurately, the cost is long and complicated. Therefore, this article mainly compares multiple coaxial cable woven layer transfer impedance calculation models, selects a computing model suitable for electric vehicle high -voltage shielding cables, and uses MATLAB for simulation. According to the comparison of the simulation value and the actual test results, it is proved to calculate the car shielding car shielding The scientific nature of the transfer impedance method of the line.