Design of Control Architecture for Stacked Low-Inertia Converters with Fast Dynamic Control

Xiangyu Han, Liran Zheng, Zheng An, Rajendra Prasad Kandula, Maryam Saeedifard, Deepak Divan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Control architectures based on distributed controllers are favored in control of modular stacked converters because of their scalability, ease of installation and stable structure. However, the existing solutions are only applicable to traditional voltage source converters (VSCs) with high-inertia components, i.e., larger DC-link capacitance which are controlled with slow proportional-integral controllers. Therefore, there is no demanding requirement on the communication speed. This paper presents the challenges in the design of control architecture of low-inertia converters, such as soft-switching solid-state transformers (S4T), particularly using fast-dynamic control. It also proposes a methodology to realize the control architecture for such stacked low-inertia converters. The proposed control architecture is verified on a two-module S4T operating at 4 kV using hardware-in-loop simulation in the OPAL-RT platform and by experiments.

Original languageEnglish
Title of host publicationECCE 2020 - IEEE Energy Conversion Congress and Exposition
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages5703-5708
Number of pages6
ISBN (Electronic)9781728158266
DOIs
StatePublished - Oct 11 2020
Externally publishedYes
Event12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020 - Virtual, Detroit, United States
Duration: Oct 11 2020Oct 15 2020

Publication series

NameECCE 2020 - IEEE Energy Conversion Congress and Exposition

Conference

Conference12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020
Country/TerritoryUnited States
CityVirtual, Detroit
Period10/11/2010/15/20

Funding

The authors are grateful for the support provided by OPAL-RT, ARPA-E and Center for Distributed Energy (CDE) at Georgia Tech for this work.

FundersFunder number
ARPA-E and Center for Distributed Energy
OPAL-RT
California Department of Education

    Keywords

    • Control architecture
    • MVDC converter
    • fast dynamic control
    • soft switching
    • solid-state transformer

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