Abstract

This paper proposes a novel bidirectional coupled inductor non-isolated DC-DC converter. It is relatively feasible for low-input-voltage applications for interfacing energy storage elements, such as batteries, and ultracapacitors with the high voltage DC bus in hybrid electric vehicles and electric vehicles. The converter can operates as step-up or step-down voltage in both directions, as well, the turns ratio confers a great voltage gain without using transformer, these give versatility and a lot of applications. Both directions of the power flow is analysed and explained, the DC voltage gain versus the duty cycle has been presented, and the mathematical analysis is validity with a simulation model.

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