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Multi-Frequency Traction-to-Auxiliary Integrated EV Drivetrain: Eliminating the Need for an Auxiliary Power Module

Leveraging multi-frequency power transfer in the drivetrain, a solution is presented to eliminate the auxiliary power module in electric vehicles. The concept exploits energy harvesting from the drivetrain switching to achieve traction-to-auxiliary power transfer. Only a compensation capacitor, high-frequency transformer, diode rectifier, and a CL filter are added to the drivetrain. Simulations and experimental verification are conducted to validate the proposed system.