4.8 Article

Common Grounded Wide Voltage-Gain Range DC-DC Converter With Zero Input Current Ripple and Reduced Voltage Stresses for Fuel Cell Vehicles

Journal

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Volume 70, Issue 3, Pages 2607-2616

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2022.3172767

Keywords

DC-DC converter; fuel cell (FC) vehicle; low voltage stress; wide voltage-gain range; zero current ripple

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This article proposes a new nonisolated dc-dc converter with wide voltage-gain range, low input current ripple, and low voltage stresses, by integrating an active switched-inductor cell, a zero current ripple cell, and a switched-capacitor cell.
A dc-dc converter used for fuel cell vehicles should be characterized by a wide voltage-gain range and low input current ripple. In order to meet the above requirements, a new nonisolated dc-dc converter consisting of an active switched-inductor cell, a zero current ripple cell, and a switched-capacitor (SC) cell was proposed in this article. The proposed converter integrates with the advantages of a wide voltage-gain range, zero input current ripple, low voltage stresses across power semiconductors, and common ground structure. Thanks to the use of a zero current ripple cell, not only the input current ripple is reduced but also the energy transfer path of the SC cell is changed, thereby reducing the instantaneous peak current of the SC structure. The operating principles, the characteristics analysis, and the parameter design of the proposed converter are given. In addition, to show the merits of the proposed converter, a comparison study is demonstrated. Finally, a prototype of 400 V, 1000 W/50 kHz is developed to validate the effectiveness of the proposed converter.

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