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Energy & Fuels
Ghazi Hajiri, Kevin Berger, Frederic Trillaud, Jean Leveque, Herve Caron
Summary: SNCF is facing a challenge to handle the growing rail traffic and maintain continuous service in densely populated areas like Paris. They have implemented electrification projects and have evaluated high temperature superconductor (HTS) cables as a possible solution. In a case study of the Parisian railway network, it was found that the use of HTS cables can reduce electrical losses by 60% and decrease total electrical consumption by 8.6%.
Article
Engineering, Electrical & Electronic
Wang Xiang, Weijia Yuan, Lie Xu, Eoin Hodge, John Fitzgerald, Paul McKeever
Summary: This paper presents a study on the DC fault transient of a meshed DC grid integrated with high-temperature superconducting (HTS) HVDC cables for offshore wind power integration. A four-terminal meshed DC grid model with a +/-100 kV DC voltage rating is developed, and DC circuit breakers (DCCBs) are employed to manage DC cable faults. Through fault scenario studies with different fault locations and protection delays, it is found that the faults on the faulted cable do not affect the functioning of other healthy cables and that the long delay of DC fault protection does not result in excessive fault current and the quenching of healthy cables. Extensive simulations in PSCAD/EMTDC software validate the research findings.
IEEE TRANSACTIONS ON POWER DELIVERY
(2022)
Article
Energy & Fuels
Mohammad Sadegh Esmaeili, Mehdi Mehrpooya
Summary: This study models a thyristor-based power conditioning system for a superconducting magnetic energy storage (SMES) system and investigates helium production for the SMES. The research found that the output current increases with time at certain firing angles, and determined the ratio of maximum liquid helium production to inlet gaseous helium. The analysis also showed a 35.7% exergy efficiency and lower power consumption compared to other helium production methods.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Automation & Control Systems
Ahmed Allam, Christian Arrington, Christopher St John, Jef Steinfeldt, Alper Erturk, Ihab El-Kady
Summary: In this study, ultrasonic power transfer through metallic barriers was investigated using experiments, analytical modeling, and numerical simulations. A Class E amplifier design was integrated with the ultrasonic system, achieving 83% ac-to-ac efficiency through a 3 mm aluminum barrier at 1 MHz. The system's overall dc-to-dc efficiency peaked at 68% while delivering 17.5 W to a dc load.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2023)
Article
Energy & Fuels
Wang Xiang, Weijia Yuan, Lie Xu, Eoin Hodge, John Fitzgerald, Paul McKeever, Keith Bell
Summary: This paper presents a feasibility study of an offshore wind farm HVDC integration system using high-temperature superconductor DC cables. The proposed system shows effective current limiting capability against fast DC fault transients.
IEEE TRANSACTIONS ON ENERGY CONVERSION
(2022)
Article
Computer Science, Information Systems
Seung-Won Lee, Jin-Wook Choe, Ik-Su Kwon, Byung-Bae Park, Hae-Jong Kim
Summary: This study presents the development of a highly reliable accelerated aging system for DC power cables, which can simulate the aging conditions and verify its reliability through testing. The experimental results show that the precision of the system is 1% and it has great potential for long-term reliability testing and diagnostic technology during the development of DC power cables.
Article
Engineering, Electrical & Electronic
Steven Nolan, Catherine E. Jones, Patrick J. Norman, Graeme M. Burt
Summary: This article proposes a system parameter-driven methodology using particle swarm optimization to optimize the design of superconducting cables, aiming to minimize disconnection of equipment due to temperature rise following a fault while minimizing the weight and cost penalty.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2022)
Article
Automation & Control Systems
Issac Kim, Jung-Wook Park
Summary: This article proposes a new integrated dc-dc conversion system (IDCS) for electric vehicles (EVs). The IDCS integrates the dc-dc converters of on-board charger (OBC), traction converter (TC), and low-voltage dc-dc converter (LDC), reducing the number of components and cost. It performs the functions of each converter while charging the high-voltage battery and low-voltage battery simultaneously, and regulates the dc-link voltage. Experimental tests on a hardware prototype prove its practical effectiveness.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Civil
Ibrahim Diab, Alice Saffirio, Gautham Ram Chandra Mouli, Abhishek Singh Tomar, Pavol Bauer
Summary: This paper presents a comprehensive and validated model of DC trolleybus grids and investigates the impact of common modeling assumptions on the system using simulations and real measurements from the grid in Arnhem, the Netherlands. The study finds that certain assumptions can be ignored, but regenerative braking, bus auxiliaries load, bilateral connections, and accurate nominal substation voltage are crucial for the correct modeling of a trolleybus grid.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2022)
Article
Automation & Control Systems
Jianquan Liao, Niancheng Zhou, Yuansheng Huang, Qianggang Wang
Summary: This article proposes a method to mitigate unbalanced voltage caused by constant power loads (CPLs) using DC electric springs (DC-ESs). The study shows a close relationship between positive and negative pole voltages and DC-ESs output voltages, increasing the complexity of the control system. By introducing a feedforward decoupling control block diagram, different control loops can be independently controlled, improving the rapidity and anti-interference performance of the control system.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Abdelrahman Elwakeel, Neville McNeill, Rafael Pena-Alzola, Min Zhang, Weijia Yuan
Summary: This article describes the development and implementation of a cryogenic DC/DC converter for supplying a DC excitation current of 500 A for superconducting magnet applications. The practical aspects and rationale behind selecting a specific topology are discussed, along with experimental results and an estimated ripple content in the load current.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2022)
Article
Engineering, Electrical & Electronic
Amir Youssefi, Itay Shomroni, Yash J. Joshi, Nathan R. Bernier, Anton Lukashchuk, Philipp Uhrich, Liu Qiu, Tobias J. Kippenberg
Summary: This experiment demonstrates the cryogenic electro-optical readout of a superconducting electromechanical circuit using a commercial titanium-doped lithium niobate modulator, achieving coherent spectroscopy and incoherent thermometry. Further optimization of the modulator design could reduce the added noise of the setup to levels similar to current semiconductor microwave amplifiers.
NATURE ELECTRONICS
(2021)
Article
Automation & Control Systems
Feng An, Biao Zhao, Bin Cui, Ruihang Bai
Summary: This article proposes a multifunctional dc collector (MDC) for constructing a low-cost, high reliability, and high flexibility all-dc offshore wind power system. By introducing the MDC, the system cost and intermediate links of power conversion are reduced, and the coupling among wind turbines is weakened. Independent maximum power point tracking operation for each wind turbine is achieved. A constant voltage ratio control method and detailed control parameter design are provided. Various operating modes are considered, providing a practical solution for long-distance and large-capacity offshore systems.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Qiang Fu, Wenjuan Du, Haifeng Wang, Xianyong Xiao
Summary: This study analyzes the stability of DC voltage oscillation in a multiterminal DC (MTDC) power system by considering its comprehensive dynamics. The study reveals that the DC voltage oscillation loop is primarily controlled by the voltage source converter (VSC), but is also affected by the dynamics of the remaining DC system (RDCS) through additional damping and open-loop modal resonance, leading to negative effects on stability. The study also proposes a method to determine the stable operating region of the RDCS.
IEEE TRANSACTIONS ON POWER SYSTEMS
(2022)
Article
Automation & Control Systems
Leonardo Gobel Fernandes, Alceu Andre Badin, Daniel Flores Cortez, Roger Gules, Eduardo Felix Ribeiro Romaneli, Amauri Assef
Summary: This article proposes a single-phase transformerless online UPS based on new technology, which operates efficiently with ac and dc input sources through switched capacitor operation. It improves power factor, balances dc bus capacitor voltages, and eliminates common mode current, reducing electromagnetic interference issues. Experimental results from a 2.5-kW prototype verify the feasibility with an efficiency of up to 94.9% and unity power factor.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Thermodynamics
M. Tallouli, J. Sun, N. Chikumoto, E. S. Otabe, O. Shyshkin, S. Charfi-Kaddour, S. Yamaguchi
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Engineering, Electrical & Electronic
Tosin Famakinwa, Oleg A. Shyshkin, Jian Sun, Mohamed Tallouli, Satarou Yamaguchi
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2016)
Article
Engineering, Electrical & Electronic
Zheng Hua Chen, Jian Xun Jin, Lu Hai Zheng, Zhi Hao Wu
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2016)
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Engineering, Electrical & Electronic
J. Sun, S. Miyata, M. Hamabe, T. Kawahara, N. Chikumoto, S. Yamaguchi
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2016)
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Engineering, Electrical & Electronic
Yury V. Ivanov, Hirofumi Watanabe, Noriko Chikumoto, Makoto Hamabe, Hirohisa Takano, Jian Sun, Satarou Yamaguchi
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2016)
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Engineering, Electrical & Electronic
Hirofumi Watanabe, Yury V. Ivanov, Noriko Chikumoto, Hirohisa Takano, Noriyuki Inoue, Satarou Yamaguchi, Kotaro Ishiyama, Zenji Oishi, Hiromi Koshizuka, Michihiko Watanabe, Takato Masuda, Kazuhiko Hayashi, Toru Sawamura
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2017)
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Engineering, Electrical & Electronic
Dimitrios I. Doukas, Andreas I. Chrysochos, Theofilos A. Papadopoulos, Dimitris P. Labridis, Lennart Harnefors, Giovanni Velotto
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2017)
Article
Physics, Condensed Matter
J. Sun, H. Ohara, S. Yamaguchi
ADVANCES IN CONDENSED MATTER PHYSICS
(2017)
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Engineering, Electrical & Electronic
Noriko Chikumoto, Hirofumi Watanabe, Yury V. Ivanov, Hirohisa Takano, Satarou Yamaguchi, Kotaro Ishiyama, Zenji Oishi, Michihiko Watanabe, Takato Masuda
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2018)
Article
Engineering, Electrical & Electronic
Dimitrios I. Doukas, Argyrios Syrpas, Dimitris P. Labridis
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2018)
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Thermodynamics
N. G. Suttell, J. V. C. Vargas, J. C. Ordonez, S. Pamidi, C. H. Kim
APPLIED THERMAL ENGINEERING
(2018)
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Engineering, Electrical & Electronic
Kohei Higashikawa, Junichi Arai, Katsuhiko Harada, Tadashi Koshizuka, Jun Matsushima, Hisatoshi Ikeda, Noureddine Harid, Ahmed Al-Durra
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Rongsheng Liu
2017 1ST INTERNATIONAL CONFERENCE ON ELECTRICAL MATERIALS AND POWER EQUIPMENT (ICEMPE)
(2017)
Proceedings Paper
Engineering, Electrical & Electronic
Dimitrios I. Doukas, Zoe D. Blatsi, Dimitris P. Labridis
2017 IEEE MANCHESTER POWERTECH
(2017)
Proceedings Paper
Engineering, Electrical & Electronic
Zheng Hua Chen, Jian Xun Jin, Jie Gang Peng, Xian Yong Xiao, Ying Li Wang
2017 20TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS)
(2017)