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Control and Experimental Validation of the Series Bridge Modular Multilevel Converter for HVDC Applications

Martinez Diez, Carlos; Costabeber, Alessandro; Tardelli, Francesco; Trainer, David; Clare, Jon

Control and Experimental Validation of the Series Bridge Modular Multilevel Converter for HVDC Applications Thumbnail


Carlos Martinez Diez

Alessandro Costabeber

Francesco Tardelli

David Trainer

Jon Clare


© 1986-2012 IEEE. The series bridge converter (SBC) is a modular multilevel converter (MMC) recently developed to enhance power density in high-voltage high-power applications. The MMC is a well-established solution, widely researched, and exploited in practical HVdc connections, thanks to its high power quality and high efficiency. However, the main limitation of the MMC is the relatively large energy storage, also due to the fact that power ripples in the submodule capacitors include a component at the fundamental ac frequency. As a result, volume becomes critical in applications such as offshore or city center in-feeds, where space is restricted and expensive. The SBC offers a more compact footprint by exploiting a series connection on the dc side and by operating the submodules with rectified waveforms, thus moving the minimum component of the instantaneous power to twice the ac fundamental and reducing capacitors size. The drawback of the converter is a more complex energy control compared to the MMC. This paper proposes the first experimental validation of the SBC, using a 2-kW laboratory-scale prototype. Since the basic converter design has been discussed in previous papers, the focus of this paper is on converter control design and experimental validation.

Journal Article Type Article
Acceptance Date Jul 24, 2019
Online Publication Date Jul 24, 2019
Publication Date Jul 24, 2019
Deposit Date Jul 25, 2019
Publicly Available Date Jul 25, 2019
Journal IEEE Transactions on Power Electronics
Print ISSN 0885-8993
Electronic ISSN 1941-0107
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 35
Issue 3
Pages 2389-2401
Keywords Electrical and Electronic Engineering
Public URL
Publisher URL
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