Shield Reliability Analysis-Based Transfer Impedance Optimization Model for Double Shielded Cable of Electric Vehicle

Table 1

Comparison of three coaxial a, b, and c methods [18].

Testing method	Test method a	Test method b	Test method c
Advantage	Test cut higher stop frequency	Measurement has more higher dynamic range	Suitable for measuring very low transfer impedance values (below 1 μΩ/m m and lower)
Cutoff frequency
Disadvantages	Low dynamic range of measurement	Test cut lower frequency	The effect of capacitive coupling is suppressed by the short circuit in the primary and secondary circuits, and the test is quite sensitive
Features	Matching resistance and impedance mismatch; Need to connect to the matching impedance network; Near-end core wire injection	Only need to connect the terminal matching resistor; Near-end core injection signal	No matching resistor; No need to access matched impedance network inject signal from remote test tube