Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Two-Inductor Non-Isolated DC-DC Converter with High Step-Up Voltage Gain

  • Lee, Sze Sing (Dept. of Electronics and Computer Science, University of Southampton Malaysia) ;
  • Chu, Bing (Dept. of Electronics and Computer Science, University of Southampton) ;
  • Lim, Chee Shen (Dept. of Electronics and Computer Science, University of Southampton Malaysia) ;
  • Lee, Kyo-Beum (Dept. of Electrical and Computer Engineering, Ajou University)
  • Received : 2018.12.06
  • Accepted : 2019.04.17
  • Published : 2019.09.20
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Abstract

In this paper, an alternative non-isolated DC-DC converter with a high voltage boosting capability is proposed. Two inductors are used and one of them has its flux linkage increases during its charging period to achieve a high step-up voltage gain. Among the three integrated capacitors, one portrays the partial characteristic of the switched-capacitor technique, while the other two are connected in series across the load. With the two switches controlled using the same duty cycle, the proposed topology demonstrates the merits of a higher and wider range of step-up voltage gain when compared with recent topologies. In addition, a reduction in loss is induced and a higher efficiency is ensured with all the voltage stresses constrained within the output voltage. Operation of the proposed converter is analyzed and validated through experimental results obtained with a prototype.

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References

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