The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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Comparative Analysis of Efficiency and Power Density of Single-Phase and 3-Level Boost Converters for PV System

태양광 시스템용 단상 및 3-레벨 부스트 컨버터의 효율 및 전력밀도 비교 분석

  • Kim, Chul-Min (Dept. of Electrical Engineering, Daejin University) ;
  • Kim, Jong-Soo (Dept. of Electrical Engineering, Daejin University)
  • Received : 2019.10.24
  • Accepted : 2019.12.19
  • Published : 2020.04.20
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Abstract

In this study, single-phase and three-level boost converters applied to the photovoltaic system were compared and analyzed in terms of efficiency and power density according to the input voltage and load conditions. For accurate analysis of efficiency, the losses in each device of the single-phase and three-level boost converters were derived using mathematical equations and simulations by using the PSIM thermal module. Then, the losses were compared with the efficiency confirmed through the actual experiments. Results confirmed that the efficiency and power density can be improved by applying the three-level boost converter to the system according to the selection of the switching frequency.

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References

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