Energy storage systems are often integrated into grid-tied renewable energy setups for stabilizing energy generation. This paper presents a novel configuration for an n-arm Cascaded H-Bridge (CHB) converter designed for the integration of renewable energy sources and energy storage systems into grid-tied setups. Each arm incorporates a series connection of m submodules with distinct functionalities: submodules designed for continuous energy delivery, for instance, submodules containing photovoltaic or fuel cells, submodules designed for energy storage and delivery, for instance, submodules containing battery cells or supercapacitors, and standard submodules based on capacitors. This paper also introduces a novel power-sharing algorithm to control various power flows, specifically addressing micro power flow between the submodules solely, and macro power flow between the submodules and the grid. Additionally, this paper outlines critical operational criteria that must be adhered to; non-compliance with these criteria results in a system not able to track its assigned references. The proposed configuration provides a novel solution for connecting renewable energy sources and storage systems to the grid and benefits from the advantages of a CHB converter. These benefits include modularity, fault-tolerant operation, and the multilevel capabilities of the CHB converter. Additionally, the effectiveness of the control design is verified through simulations. Finally, conclusions are drawn.

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Innovative Solutions for Renewable Energy and Storage Integration Using Grid-Tied Cascaded H-Bridge Converters

  • Anthony Abdayem,
  • Jean Sawma,
  • Flavia Khatounian,
  • Eric Monmasson

摘要

Energy storage systems are often integrated into grid-tied renewable energy setups for stabilizing energy generation. This paper presents a novel configuration for an n-arm Cascaded H-Bridge (CHB) converter designed for the integration of renewable energy sources and energy storage systems into grid-tied setups. Each arm incorporates a series connection of m submodules with distinct functionalities: submodules designed for continuous energy delivery, for instance, submodules containing photovoltaic or fuel cells, submodules designed for energy storage and delivery, for instance, submodules containing battery cells or supercapacitors, and standard submodules based on capacitors. This paper also introduces a novel power-sharing algorithm to control various power flows, specifically addressing micro power flow between the submodules solely, and macro power flow between the submodules and the grid. Additionally, this paper outlines critical operational criteria that must be adhered to; non-compliance with these criteria results in a system not able to track its assigned references. The proposed configuration provides a novel solution for connecting renewable energy sources and storage systems to the grid and benefits from the advantages of a CHB converter. These benefits include modularity, fault-tolerant operation, and the multilevel capabilities of the CHB converter. Additionally, the effectiveness of the control design is verified through simulations. Finally, conclusions are drawn.