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Energies 2016, 9(12), 1012;

A Hybrid Modular Multilevel Converter with Partial Embedded Energy Storage

School of Electrical Engineering and Telecommunications, University of New South Wales (UNSW) Australia, Sydney, NSW 2052, Australia
School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
Federal University of Santa Catarina, Florianópolis 88040-900, Brazil
Tecnalia, Energy and Environment Division, 48160 Derio, Spain
Author to whom correspondence should be addressed.
Academic Editor: Gabriele Grandi
Received: 31 August 2016 / Revised: 14 November 2016 / Accepted: 23 November 2016 / Published: 30 November 2016
(This article belongs to the Special Issue Selected Papers from 2nd Energy Future Conference)
Full-Text   |   PDF [2010 KB, uploaded 30 November 2016]   |  


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. View Full-Text
Keywords: multilevel converters; modular multilevel converter (MMC); hybrid multilevel converters; energy storage multilevel converters; modular multilevel converter (MMC); hybrid multilevel converters; energy storage

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Konstantinou, G.; Pou, J.; Pagano, D.; Ceballos, S. A Hybrid Modular Multilevel Converter with Partial Embedded Energy Storage. Energies 2016, 9, 1012.

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