Design and Benchmark of Capacitive DC Links for the Hold-up Time Application

Mingxuan Qi, Shili Huang, Cunzhong Li, Haoran Wang, Guorong Zhu, Huai Wang

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

Capacitive DC links are widely used in power electronic systems to balance the instantaneous power difference between the input source and output load. The conventional capacitive DC link, which uses passive capacitors, encounters challenges in lifetime and power density. Recently, novel active DC links implemented by power electronic circuits are proposed for low voltage ripple requirement application, which can achieve lower energy storage, high power density and longer lifetime. However, the existing design of active DC links can not be extended to the applications with hold-up time requirement directly, due to it does not take the energy storage into account. This paper proposes the design methods for two typical active DC links with the energy storage constraint, so as to achieve specified hold-up time requirement. Moreover, benchmarking between passive and typical active DC links are investigated in terms of cost and volume. The results serve as guideline to select and design capacitive DC links to achieve specified hold-up time requirement.

Original languageEnglish
Title of host publicationPEDG 2019 - 2019 IEEE 10th International Symposium on Power Electronics for Distributed Generation Systems
Number of pages6
PublisherIEEE
Publication dateJun 2019
Pages939-944
Article number8807642
ISBN (Electronic)9781728124551
DOIs
Publication statusPublished - Jun 2019
Event10th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2019 - Xi'an, China
Duration: 3 Jun 20196 Jun 2019

Conference

Conference10th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2019
CountryChina
CityXi'an
Period03/06/201906/06/2019
SeriesIEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)
ISSN2329-5767

Bibliographical note

Publisher Copyright:
© 2019 IEEE.

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

  • Capacitive DC link
  • Cost
  • Hold-up time
  • Volume

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