A hybrid modular multilevel converter with partial embedded energy storage

Georgios Konstantinou; Josep Pou; Daniel Pagano; Salvador Ceballos

doi:10.3390/en9121012

A hybrid modular multilevel converter with partial embedded energy storage

Georgios Konstantinou, Josep Pou, Daniel Pagano, Salvador Ceballos

Power Electronics and System Equipment

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

Modular and cascaded multilevel converters provide a functional solution for the integration of energy storage systems (ESSs). This paper develops a hybrid multilevel converter based on the modular multilevel converter (MMC) that can be functionally extended with partial embedded ESS as a fraction of the overall converter power rating. The configuration, which can operate as a typical DC-AC converter, enables multi-directional power flow between the DC- and AC-side of the converter, as well as the embedded energy storage elements. The use of a three-phase flying-capacitor submodule eliminates the second-order harmonic oscillations present in modular cascaded multilevel converters. Current, voltage and power control are discussed in the paper while simulation results illustrate the operation of the hybrid MMC as a DC-AC converter in a typical inverter application and the additional functions and control of the embedded ESS.

Original language	English
Article number	1012
Journal	Energies
Volume	9
Issue number	12
DOIs	https://doi.org/10.3390/en9121012
Publication status	Published - Dec 2016

Keywords

Energy storage
Hybrid multilevel converters
Modular multilevel converter (MMC)
Multilevel converters

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.3390/en9121012

Cite this

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title = "A hybrid modular multilevel converter with partial embedded energy storage",

abstract = "Modular and cascaded multilevel converters provide a functional solution for the integration of energy storage systems (ESSs). This paper develops a hybrid multilevel converter based on the modular multilevel converter (MMC) that can be functionally extended with partial embedded ESS as a fraction of the overall converter power rating. The configuration, which can operate as a typical DC-AC converter, enables multi-directional power flow between the DC- and AC-side of the converter, as well as the embedded energy storage elements. The use of a three-phase flying-capacitor submodule eliminates the second-order harmonic oscillations present in modular cascaded multilevel converters. Current, voltage and power control are discussed in the paper while simulation results illustrate the operation of the hybrid MMC as a DC-AC converter in a typical inverter application and the additional functions and control of the embedded ESS.",

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AU - Konstantinou, Georgios

AU - Pou, Josep

AU - Pagano, Daniel

AU - Ceballos, Salvador

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AB - Modular and cascaded multilevel converters provide a functional solution for the integration of energy storage systems (ESSs). This paper develops a hybrid multilevel converter based on the modular multilevel converter (MMC) that can be functionally extended with partial embedded ESS as a fraction of the overall converter power rating. The configuration, which can operate as a typical DC-AC converter, enables multi-directional power flow between the DC- and AC-side of the converter, as well as the embedded energy storage elements. The use of a three-phase flying-capacitor submodule eliminates the second-order harmonic oscillations present in modular cascaded multilevel converters. Current, voltage and power control are discussed in the paper while simulation results illustrate the operation of the hybrid MMC as a DC-AC converter in a typical inverter application and the additional functions and control of the embedded ESS.

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KW - Multilevel converters

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A hybrid modular multilevel converter with partial embedded energy storage

Abstract

Keywords

UN SDGs

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