A novel multiport converter interface for solar panels of cubesat

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9 Scopus citations


Maximization of solar energy harvest and miniaturization of dc-dc converters are essential for low earth orbit (LEO) CubeSats, which are constrained by volume and weight restrictions. The state-of-the-art electric power system (EPS) architectures utilize several individual dc-dc converters to maximize solar energy harvest but it has a tradeoff with miniaturization as it requires several inductors. The main objective of this article is to propose a single-inductor-based multiport converter topology for the LEO CubeSat's EPS. The proposed topology interfaces the photovoltaic (PV) panels to the energy storage system and a control strategy have been developed to extract maximum solar power from each PV panel under wide varying irradiation conditions of the LEO CubeSat. The proposed topology consists of series-connected half-bridge modules fed by PV panels and their output is supplied to the energy storage system via a boost converter. The principle of operation is introduced followed by steady-state analysis and converter dynamics analysis. The performance of the proposed converter is verified for several case studies with an experimental prototype developed based on 1U CubeSat specifications.

Original languageBritish English
Pages (from-to)629-643
Number of pages15
JournalIEEE Transactions on Power Electronics
Issue number1
StatePublished - Jan 2022


  • CubeSats
  • electric power system (EPS) design
  • low earth orbit (LEO) satellites
  • nanosatellites
  • small satellites
  • switched capacitor converter (SCC)


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