A Modulation Strategy for Wide Voltage Output in DAB based DC-DC Modular Multilevel Converter

Todorcevic, T.; Bauer, Pavol; Ferreira, Bram; van Kessel, R.

A Modulation Strategy for Wide Voltage Output in DAB based DC-DC Modular Multilevel Converter

Conference paper (2014)

Authors

T. Todorcevic DC systems, Energy conversion & Storage -

Pavol Bauer DC systems, Energy conversion & Storage -

Bram Ferreira ESE Programmes -

R. van Kessel SBM Offshore

Research Group

DC systems, Energy conversion & Storage () (TU Delft)

Control Wave energy conversion Dual active bridge Multilevel converter Dc-dc

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http://resolver.tudelft.nl/uuid:48610bdb-53e6-4a13-b361-964ae2b1caf6

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Published Date

2014

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

DC systems, Energy conversion & Storage

Abstract

This paper presents a modulation strategy for wide voltage output in a bidirectional modular multilevel dc-dc power electronic converter for wave energy extraction using Electro Active Polymer Wave Energy Converters (EAPWECs). The chosen electrical power converter uses a 10 kV, low current bidirectional dc-dc modular multilevel topology with Dual Active Bridges (DABs) as a basis for each module. This paper proposes a modulation method consisting of several variable frequency DAB modulation modes and explains their operating areas and limitations. Through a simulation model it is shown how the control for the multilevel converter is implemented. Finally, loss estimation is performed using the developed loss model, which was previously validated on an experimental setup.