Open AccessA Multiple‐Port Three‐Level DC/DC Converter for HESS with Power Sharing in DC Microgrids
Author(s) -
Tong JIAO,
Xi'nan ZHANG,
Benfei WANG,
Guangquan CUI,
Wanzhong MA
Publication year - 2021
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2021.04.011
Subject(s) - energy storage , microgrid , supercapacitor , computer science , power (physics) , battery (electricity) , renewable energy , port (circuit theory) , forward converter , electrical engineering , power sharing , flyback converter , electronic engineering , boost converter , voltage , engineering , capacitance , electrode , physics , quantum mechanics
In order to reduce the volume, weight and cost of conventional hybrid energy storage system (HESS) while properly exploring the complementary features of different energy storage devices for DC microgrid applications, this paper proposes a multiple‐port three‐level DC/DC converter. It possesses multiple ports sharing one front‐end three‐level DC/DC converter with an inductor and supercapacitor bank. Different types of batteries and/or multiple battery banks can be interfaced through the multiple terminals. Such a converter structure facilitates the cooperation of different energy storage devices to satisfy various power demands of DC microgrids with intermittent renewable generation plants. Moreover, the proposed structure allows power sharing among different energy storage devices, which enables more efficient cooperation of different battery banks or different types of batteries. Experimental results are presented to verify the efficacy of the proposed converter structure and its control.