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

^*Corresponding author for this work

Digitization of equipment for the electrical grid

University of New South Wales
Nanyang Technological University
Universidade Federal de Santa Catarina

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

16 Citations (Scopus)

1 Downloads (Pure)

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

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10.3390/en9121012

A Hybrid Modular MultilevelLicence: Unspecified

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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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month = dec,

doi = "10.3390/en9121012",

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volume = "9",

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AU - Konstantinou, Georgios

AU - Pou, Josep

AU - Pagano, Daniel

AU - Ceballos, Salvador

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Y1 - 2016/12

N2 - 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.

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 - Hybrid multilevel converters

KW - Modular multilevel converter (MMC)

KW - Multilevel converters

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DO - 10.3390/en9121012

M3 - Article

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A hybrid modular multilevel converter with partial embedded energy storage

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