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Suppression of Common Mode Crosstalk between Power Circuit and Signal Circuit in Power Electronic System

Due to the limited space on the trains and ships, the space of the interconnect cables was extremely small, leading to severe common mode(CM) crosstalk issue between unshielded cables. To reduce the coupling between unshielded cables, shielded cables were widely used. However, the coupling between shielded cables could not be ignored too. Therefore, a double-terminal grounding method was proposed for suppressing the crosstalk between shielded cables. Mathematic derivation was carried out to verify the method. Finally, a test bench was set up for experimental verification. And experimental results were in good agreement with the deduced results.