Experimental Demonstrator of Full Bridge Modular Multilevel Converter for DC Grid Applications

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Experimental Demonstrator of Full Bridge Modular Multilevel Converter for DC Grid Applications

Conference Paper (2025)

Author(s)

M. Ahmadi (TU Delft - DC systems, Energy conversion & Storage)

H. Dialani (TU Delft - ESP LAB)

Mladen Gagic (TU Delft - ESP LAB)

P. Bauer (TU Delft - DC systems, Energy conversion & Storage)

A. Shekhar (TU Delft - DC systems, Energy conversion & Storage)

Research Group

DC systems, Energy conversion & Storage

DOI related publication

https://doi.org/10.1109/ICDCM63994.2025.11144660

PCB Prototype Modular Multilevel Converter Hardware implementation

To reference this document use:

https://resolver.tudelft.nl/uuid:141c39bc-07e1-4c4b-90bc-fc48f5a887d8

More Info

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Publication Year

2025

Language

English

Research Group

DC systems, Energy conversion & Storage

Bibliographical Note

Green Open Access added to TU Delft Institutional Repository as part of the Taverne amendment. More information about this copyright law amendment can be found at https://www.openaccess.nl. Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.@en

ISBN (print)

979-8-3315-1275-0

ISBN (electronic)

979-8-3315-1274-3

Reuse Rights

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Abstract

This paper presents the design and control of 12 kW medium voltage Modular Multilevel Converter (MMC) prototype, providing a general overview on both the component and system levels. A top level functional overview of the sub-module (SM) converter design including features like semiconductor temperature monitoring and protections for over-voltage, overcurrent, and over-temperature to enhance reliability. The paper also offers a comprehensive system overview, utilizing OPALRT as a high-level controller. To demonstrate the effectiveness of the proposed design, a 12-kW, three-phase MMC prototype was constructed, consisting of four full-bridge (FB) SMs in each converter arm. The paper explains communication management and the integration of analog and digital signals between the physical system and the user interface controller. Finally, the system's output under various operating conditions is analyzed and presented.

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