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AN IMPROVED LAYOUT STRATEGY FOR COMMON-MODE EMI SUPPRESSION APPLICABLE TO HIGH-FREQUENCY PLANAR TRANSFORMERS IN HIGH-POWER DC/DC CONVERTERS USED FOR ELECTRIC VEHICLES

AN IMPROVED LAYOUT STRATEGY FOR COMMON-MODE EMI SUPPRESSION APPLICABLE TO HIGH-FREQUENCY PLANAR TRANSFORMERS IN HIGH-POWER DC/DC CONVERTERS USED FOR ELECTRIC VEHICLES

ABSTRACT:

          Presently, there is an immense impetus in the automotive industry to develop plug-in electric vehicles (PIEVs) to reverse the ever increasing green house gas emissions from fossil fuels and depleting fossil fuel resources. High-frequency ac–dc converters with an isolated output are one of the essential building blocks for transferring power from utility mains to the traction battery packs which store energy for propelling the EV. Generally, the ac/dc converters used in EVs include a PFC stage at the input side and an isolated dc/dc converter at the battery side. Due to the switching nature of the converter, electromagnetic compatibility (EMC) of these converters is an essential requirement, to ensure not only its own operation but also the safe and secure operation of surrounding electrical equipment.

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