Evaluation of topologies for a solar powered bidirectional electric vehicle charger

Albert Bassa De Los Mozos, Gautham Ram Chandra Mouli, Pavol Bauer

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)
17 Downloads (Pure)


Charging of electric vehicles (EVs) from solar energy provides a sustainable means to power EVs in the future. A comparison of topologies for a three-port converter to charge EVs directly from photovoltaic (PV) panels is presented in this study. The grid-connected EV charger has a nominal rating of 10 kW and is bidirectional, enabling vehicle-to-grid operation. The topologies are optimally designed considering different switching frequencies, silicon carbide devices, magnetic cores and number of interleaved stages. Nine topologies are compared using a comparison framework, and the best topology is chosen based on the number of components, converter efficiency, volume, controllability and current ripple. The analysis shows that the best topology is a three-port converter with a central direct current link with a 3-leg interleaved boost converter (IBC) for the PV, two-level inverter with sinusoidal modulation for the grid and a 4-phase interleaved flyback converter for the EV. The loss models built are experimentally verified using a 3-leg IBC.

Original languageEnglish
Pages (from-to)3675-3687
Number of pages13
JournalIET Power Electronics
Issue number14
Publication statusPublished - 2019

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