A Hybrid Modular Multilevel Converter with Partial Embedded Energy Storage

Georgios Konstantinou, Josep Pou, Daniel Pagano and Salvador Ceballos
Additional contact information
Georgios Konstantinou: School of Electrical Engineering and Telecommunications, University of New South Wales (UNSW) Australia, Sydney, NSW 2052, Australia
Josep Pou: School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
Daniel Pagano: Federal University of Santa Catarina, Florianópolis 88040-900, Brazil
Salvador Ceballos: Tecnalia, Energy and Environment Division, 48160 Derio, Spain

Energies, 2016, vol. 9, issue 12, 1-18

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.

Keywords: multilevel converters; modular multilevel converter (MMC); hybrid multilevel converters; energy storage (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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