High‐frequency‐link DC solid state transformer based on voltage self‐balancing control for MVDC power distribution application

Abstract This paper presents a novel voltage self‐balancing converter (VBC) applied to DC solid‐state transformer (DCSST), analyzes the operating principle of the proposed VBC, and proves the voltage balance performance. Based on this converter, a novel DCSST topology is proposed, which can be used...

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Autores principales:	Peng Wang, Xianzhong Chen, Chaonan Tong, Xiaoguang Zhang, Pengyu Jia, Chunxue Wen
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/f4f56343eef14ad1bc03acb3a1fe633b
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spelling	oai:doaj.org-article:f4f56343eef14ad1bc03acb3a1fe633b2021-11-22T13:36:45ZHigh‐frequency‐link DC solid state transformer based on voltage self‐balancing control for MVDC power distribution application1755-45431755-453510.1049/pel2.12207https://doaj.org/article/f4f56343eef14ad1bc03acb3a1fe633b2021-12-01T00:00:00Zhttps://doi.org/10.1049/pel2.12207https://doaj.org/toc/1755-4535https://doaj.org/toc/1755-4543Abstract This paper presents a novel voltage self‐balancing converter (VBC) applied to DC solid‐state transformer (DCSST), analyzes the operating principle of the proposed VBC, and proves the voltage balance performance. Based on this converter, a novel DCSST topology is proposed, which can be used in medium and low voltage DC distribution application, microgrid and medium and low voltage energy storage system. Compared with the previous work, under the same voltage level, it can effectively reduce the number of transformers and switches, reduce the voltage level of switches, and realize the soft switching of the VBC switches, so as to improve the system efficiency and power density, and then improve the system reliability. Meanwhile, the fault handling ability and fault tolerance ability of DCSST are improved, which makes DCSST more reliable when multiple isolated bi‐directional DC/DC Converters (IBDC) are connected in series. In addition, with this topology, the input voltage self‐balancing control strategy of the IBDC is not needed because of the voltage self‐balancing characteristic of VBC, which simplifies the control complexity and greatly improves the control accuracy of the control system. Experimental results agree well with the accuracy and correctness of the proposed topology.Peng WangXianzhong ChenChaonan TongXiaoguang ZhangPengyu JiaChunxue WenWileyarticleElectronicsTK7800-8360ENIET Power Electronics, Vol 14, Iss 16, Pp 2620-2636 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Electronics TK7800-8360
spellingShingle	Electronics TK7800-8360 Peng Wang Xianzhong Chen Chaonan Tong Xiaoguang Zhang Pengyu Jia Chunxue Wen High‐frequency‐link DC solid state transformer based on voltage self‐balancing control for MVDC power distribution application
description	Abstract This paper presents a novel voltage self‐balancing converter (VBC) applied to DC solid‐state transformer (DCSST), analyzes the operating principle of the proposed VBC, and proves the voltage balance performance. Based on this converter, a novel DCSST topology is proposed, which can be used in medium and low voltage DC distribution application, microgrid and medium and low voltage energy storage system. Compared with the previous work, under the same voltage level, it can effectively reduce the number of transformers and switches, reduce the voltage level of switches, and realize the soft switching of the VBC switches, so as to improve the system efficiency and power density, and then improve the system reliability. Meanwhile, the fault handling ability and fault tolerance ability of DCSST are improved, which makes DCSST more reliable when multiple isolated bi‐directional DC/DC Converters (IBDC) are connected in series. In addition, with this topology, the input voltage self‐balancing control strategy of the IBDC is not needed because of the voltage self‐balancing characteristic of VBC, which simplifies the control complexity and greatly improves the control accuracy of the control system. Experimental results agree well with the accuracy and correctness of the proposed topology.
format	article
author	Peng Wang Xianzhong Chen Chaonan Tong Xiaoguang Zhang Pengyu Jia Chunxue Wen
author_facet	Peng Wang Xianzhong Chen Chaonan Tong Xiaoguang Zhang Pengyu Jia Chunxue Wen
author_sort	Peng Wang
title	High‐frequency‐link DC solid state transformer based on voltage self‐balancing control for MVDC power distribution application
title_short	High‐frequency‐link DC solid state transformer based on voltage self‐balancing control for MVDC power distribution application
title_full	High‐frequency‐link DC solid state transformer based on voltage self‐balancing control for MVDC power distribution application
title_fullStr	High‐frequency‐link DC solid state transformer based on voltage self‐balancing control for MVDC power distribution application
title_full_unstemmed	High‐frequency‐link DC solid state transformer based on voltage self‐balancing control for MVDC power distribution application
title_sort	high‐frequency‐link dc solid state transformer based on voltage self‐balancing control for mvdc power distribution application
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/f4f56343eef14ad1bc03acb3a1fe633b
work_keys_str_mv	AT pengwang highfrequencylinkdcsolidstatetransformerbasedonvoltageselfbalancingcontrolformvdcpowerdistributionapplication AT xianzhongchen highfrequencylinkdcsolidstatetransformerbasedonvoltageselfbalancingcontrolformvdcpowerdistributionapplication AT chaonantong highfrequencylinkdcsolidstatetransformerbasedonvoltageselfbalancingcontrolformvdcpowerdistributionapplication AT xiaoguangzhang highfrequencylinkdcsolidstatetransformerbasedonvoltageselfbalancingcontrolformvdcpowerdistributionapplication AT pengyujia highfrequencylinkdcsolidstatetransformerbasedonvoltageselfbalancingcontrolformvdcpowerdistributionapplication AT chunxuewen highfrequencylinkdcsolidstatetransformerbasedonvoltageselfbalancingcontrolformvdcpowerdistributionapplication
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High‐frequency‐link DC solid state transformer based on voltage self‐balancing control for MVDC power distribution application

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