Dr. Yuji Zeng
'%3e%3cpath%20d='M22.1642%2019.0924C21.7317%2018.068%2021.1041%2017.1375%2020.3163%2016.3527C19.5309%2015.5656%2018.6006%2014.9381%2017.5766%2014.5048C17.5674%2014.5002%2017.5582%2014.4979%2017.5491%2014.4933C18.9774%2013.4616%2019.9059%2011.7811%2019.9059%209.88504C19.9059%206.74408%2017.3611%204.19922%2014.2201%204.19922C11.0792%204.19922%208.53429%206.74408%208.53429%209.88504C8.53429%2011.7811%209.46282%2013.4616%2010.8912%2014.4956C10.882%2014.5002%2010.8728%2014.5025%2010.8636%2014.5071C9.83652%2014.9404%208.91487%2015.5617%208.1239%2016.355C7.33685%2017.1404%206.70933%2018.0707%206.276%2019.0947C5.85031%2020.0972%205.62072%2021.172%205.59967%2022.2609C5.59905%2022.2853%205.60335%2022.3097%205.61229%2022.3325C5.62123%2022.3553%205.63465%2022.376%205.65174%2022.3935C5.66883%2022.4111%205.68926%2022.425%205.71182%2022.4345C5.73437%2022.444%205.7586%2022.4489%205.78308%2022.4489H7.15868C7.25956%2022.4489%207.3398%2022.3686%207.3421%2022.2701C7.38795%2020.5001%208.09868%2018.8425%209.35506%2017.5861C10.655%2016.2862%2012.3814%2015.5709%2014.2201%2015.5709C16.0588%2015.5709%2017.7852%2016.2862%2019.0852%2017.5861C20.3415%2018.8425%2021.0523%2020.5001%2021.0981%2022.2701C21.1004%2022.3709%2021.1807%2022.4489%2021.2815%2022.4489H22.6571C22.6816%2022.4489%2022.7058%2022.444%2022.7284%2022.4345C22.751%2022.425%2022.7714%2022.4111%2022.7885%2022.3935C22.8056%2022.376%2022.819%2022.3553%2022.8279%2022.3325C22.8369%2022.3097%2022.8412%2022.2853%2022.8406%2022.2609C22.8176%2021.165%2022.5907%2020.0989%2022.1642%2019.0924ZM14.2201%2013.8284C13.1678%2013.8284%2012.1773%2013.418%2011.4322%2012.6729C10.6871%2011.9278%2010.2767%2010.9374%2010.2767%209.88504C10.2767%208.83271%2010.6871%207.84227%2011.4322%207.09715C12.1773%206.35204%2013.1678%205.94165%2014.2201%205.94165C15.2724%205.94165%2016.2629%206.35204%2017.008%207.09715C17.7531%207.84227%2018.1635%208.83271%2018.1635%209.88504C18.1635%2010.9374%2017.7531%2011.9278%2017.008%2012.6729C16.2629%2013.418%2015.2724%2013.8284%2014.2201%2013.8284Z'%20fill='%238590A2'/%3e%3c/g%3e%3c/svg%3e)
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6Years (2021-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications12 April 2021 in IEEE Journal of Emerging and Selected Topics in Power Electronics
Journal Article
ZZzqj20@dlmu.edu.cn Zhang
zqj20@dlmu.edu.cn ZhangYuji ZengYLYancheng Liu
Yancheng LiuZXZhuang Xuzhou
Zhuang XuzhouHZHanwen Zhang
Hanwen Zhang
HGHaohao Guo
Haohao Guo +1
This article proposes an improved distributed cooperative control strategy for the energy storage system (ESS) in islanded dc microgrid. To meet the requirements of state of charge (SoC) balance, accurate current sharing, and voltage regulation, a hierarchical control structure is established. In the primary control layer, the droop coefficient is adaptively adjusted through the SoC dynamic changes in each energy storage unit (ESU) to achieve SoC balance, and two balance adjustment factors are introduced to improve SoC convergence speed and accuracy. In the secondary control layer, an information state factor $\zeta $ is designed to eliminate the influence of the inconsistent line resistance on the SoC balance and realize the dc bus voltage recovery. In the communication layer, each ESU only exchanges information with neighboring nodes through a sparse communication network, in which a dynamic consensus algorithm is used to achieve stable convergence of global average information. Finally, a dc microgrid simulation model and StarSim HIL experimental platform are built. The results show that the proposed control strategy can achieve SoC balance and accurate load current sharing under a variety of complex operating conditions and have excellent plug-and-play performance.
22 November 2023 in Renewable Energy
Journal Article
RIRashid Iqbal
Rashid IqbalYLYancheng Liu
Yancheng Liu
Yuji ZengQZQinjin Zhang
Qinjin Zhang
MZMuhammad Zeeshan
Muhammad Zeeshan2 August 2024 in Renewable Energy
Journal Article
QZQinjin Zhang
Qinjin Zhang
DXDi Xie
Di Xie
Yuji ZengYLYancheng Liu
Yancheng Liu
HYHeyang Yu
Heyang Yu
SLSiyuan Liu
Siyuan Liu
30 November 2021 in IEEE Transactions on Power Systems
Journal Article
Yuji ZengZZzqj20@dlmu.edu.cn Zhang
zqj20@dlmu.edu.cn ZhangYLYancheng Liu
Yancheng LiuZXZhuang Xuzhou
Zhuang XuzhouHGHaohao Guo
Haohao GuoThis paper presents a novel hierarchical cooperative control strategy to solve the problems of unbalanced State of Charge (SoC), unreasonable load current sharing, and unstable bus voltage for battery storage system (BSS) in islanded DC microgrid. In the communication layer, a neighbor-to-neighbor communication network architecture is constructed in which each battery storage unit (BSU) only communicates information with neighboring nodes, and a multi-agent consensus algorithm is used to iteratively estimate the relevant average global variables. In the main control layer, the droop coefficient is dynamically adjusted by constructing a fast SoC convergence function to ensure that the load current is reasonably distributed based on the rated capacity of each BSU. In the secondary control layer, a virtual voltage drop equalization controller and an average bus voltage compensation controller are designed to eliminate the impact of line impedance mismatch and compensate the average bus voltage. Furthermore, an optimized factor is designed to accelerate the later stage of SoC convergence. Finally, a DC microgrid experimental platform based on StarSim HIL is built, and the results demonstrate that the proposed strategy can achieve the control objectives of fast SoC balance, proportional load current sharing, and bus voltage stability.
25 February 2022 in IEEE Transactions on Industry Applications
Journal Article
Yuji ZengZZzqj20@dlmu.edu.cn Zhang
zqj20@dlmu.edu.cn ZhangYLYancheng Liu
Yancheng LiuZXZhuang Xuzhou
Zhuang XuzhouXLXu Lv
Xu Lv
HWHonglai Wang
Honglai Wang
In this article, an improved distributed secondary control strategy is proposed to achieve state of charge (SoC) balance, accurate load current sharing, and bus voltage recovery for battery storage system in dc shipboard microgrid. First, each battery storage unit (BSU) is regarded as a multiagent, and a neighbor-to-neighbor communication network is constructed to reduce the system communication burden. Each BSU is based on distributed consensus protocol, and global consensus can be achieved only by communication between adjacent BSUs. On this basis, a novel consensus-based SoC balancing algorithm is proposed to achieve accurate load current sharing, and a dc bus voltage controller is designed to achieve secondary regulation of the bus voltage. Furthermore, the SoC convergence characteristics, systems stability analysis, global dynamic model, and steady-state analysis of the proposed control strategy are studied. Finally, the simulation and StarSim HIL experimental results show that the proposed control strategy can achieve SoC dynamic balance, accurate load current sharing, and average bus voltage recovery under various complex conditions, and has a faster SoC convergence speed than advanced methods.
About Me
Yuji Zeng received the PhD degree in Marine Engineering from Dalian Maritime University, China, in June 2025. He was also a visiting PhD student sponsored by CSC at The University of Western Australia, Australia, in 2023-2024. Currently, he is a Post-doc in the Department of Electrical Engineering at City University of Hong Kong. His research interests include shipboard DC integrated power systems, renewable energy hydrogen production systems, DC microgrids, etc. He is hosting the Young Elite Scientists Sponsorship Program by CAST - Ph.D. Candidates Special Project, and the Cultivation Program for the Excellent Doctoral Dissertation of DMU. Participated in a total of 15 research projects, including the National Key Research and Development Program (NKRDP), Key/General/Youth Projects of the National Natural Science Foundation of China (NNSFC). He has been published more than 40 academic papers, with 19 papers published as first/ corresponding authors in international journals and conferences such as IEEE TPEL, TTE, TSG, TPWRS, TIA, JESTPE, etc. Applied for 10 national invention patents of China. Received awards such as the National Scholarship for Ph.D. Students of China, Intel Fellowship, Outstanding Graduate of Liaoning Province, etc. Appointed as a Young Editorial Board Member for the journals of Protection and Control of Modern Power Systems (PCMP), Battery Energy, and EcoEnergy. Appointed as a Reviewer for more than 30 SCI journals such as IEEE TPEL, TSG, TII, TIE, TTE.
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