Dual-Switch Boost DC–DC Converter for Use in Fuel-Cell-Powered Vehicles

• Main Authors: Xiaogang Wu, Wenwen Shi, Jiuyu Du
• Format: Article
• Language: English
• Published: IEEE 2019-01-01
• Series: IEEE Access
• Subjects: Fuel cell; DC/DC converter; topology; high gain ratio
• Online Access: https://ieeexplore.ieee.org/document/8717620/

To facilitate voltage matching between the cell stack and power batteries in fuel-cell-powered vehicles, an implementation of a simple dual-switch boost DC-DC converter topology has been proposed in this paper. Compared with existing boost topologies, the one proposed herein reduces the number of components required and stress induced whilst maintaining a high-gain ratio. The results of experiments performed in this paper reveal that the corresponding to a duty ratio of 0.8, the proposed converter topology demonstrates the realization of a boost ratio of 6, thereby exceeding that the realized by conventional boost converters by nearly 73%. In addition, at an output voltage of 50 V, a maximum operating efficiency of 91% was achieved. These results demonstrate the effectiveness and feasibility of the proposed DC-DC converter topology for use in fuel-cell-powered vehicles.