Zobrazeno 1 - 10
of 285
pro vyhledávání: '"Junhua Xu"'
Publikováno v:
IET Generation, Transmission & Distribution, Vol 18, Iss 16, Pp 2677-2687 (2024)
Abstract The weak AC grid in a modular multilevel converter modular multilevel converter based high voltage direct current (MMC‐HVDC) receiving‐end system requires faster reactive power support from the receiving‐end MMC. However, under the MMC
Externí odkaz:
https://doaj.org/article/b41cd23c395344e2b8fc11b7020cc7bc
Autor:
Lijun Zhao, Haolin Ye, Xinmeng Wu, Jian Yang, Lihua Yu, Zhongqi Shi, Shahid Hussain, Guanjun Qiao, Junhua Xu, Bangzhi Ge, Li Wang, Chongjian Zhou
Publikováno v:
Journal of Materiomics, Vol 9, Iss 6, Pp 1263-1272 (2023)
The p-type Te-free Cu3SbSe4 with famatinite structure is a potential candidate for thermoelectric materials due to the low cost and eco-friendly constituent elements. However, its strong bipolar effect and high lattice thermal conductivity (κlat) ar
Externí odkaz:
https://doaj.org/article/64753d36f3d644fbad34ff0c89edff28
Publikováno v:
Journal of Materials Research and Technology, Vol 27, Iss , Pp 4920-4928 (2023)
Adding high melting point nano-particles to the weld seam is an effective method to improve the thermal crack sensitivity and mechanical properties of aluminum alloy fusion welded joints, and a reasonable heat treatment process will further improve t
Externí odkaz:
https://doaj.org/article/36c7b4a0f9e64fedb6a563aa44e22d3d
Publikováno v:
Journal of Materials Research and Technology, Vol 26, Iss , Pp 9039-9048 (2023)
Adding nano ceramic particles to the weld seam is an effective way to improve the strength of the spray formed 7055 aluminum alloy welded joint. However, nano ceramic particles are prone to agglomeration, and the agglomerated nano ceramic particles i
Externí odkaz:
https://doaj.org/article/a3681534af624f548027fb172a0a4196
Autor:
Baffa Haruna, Zhongyan Luo, Mujtaba Aminu Muhammad, Jinfeng Tang, Jukka Kuva, Risto Koivula, Hongli Bao, Junhua Xu
Publikováno v:
Batteries, Vol 10, Iss 7, p 254 (2024)
This study introduces a straightforward and effective amorphous ZrP/polyacrylonitrile composite ion exchange method for separating Li from the leachate of spent Li-ion batteries (NMC 111). The cathode materials were leached with a series of optimized
Externí odkaz:
https://doaj.org/article/a8a45c7df58a48f08f589a2cfb4a3e80
Publikováno v:
Fractal and Fractional, Vol 8, Iss 7, p 392 (2024)
This paper introduces fractional-order capacitors and fractional-order inductors into the conventional integer-order cascaded H-bridge multilevel static compensator (ICHM-STATCOM), thereby constructing the main circuit of the fractional-order cascade
Externí odkaz:
https://doaj.org/article/633c05cd728d4abe89e3e4c9da2c8a88
Publikováno v:
Energies, Vol 17, Iss 10, p 2401 (2024)
The DC distribution network is a low-inertia system, which is very sensitive to load disturbance, system failure, and other factors. By adding virtual capacitance to the converter connected to the power supply, the virtual inertia of the DC power gri
Externí odkaz:
https://doaj.org/article/34dabe8d6d674eb88efbb9942d6a4c56
Autor:
Junhua Xu, Hongwei Cai, Zhuhao Wu, Xiang Li, Chunhui Tian, Zheng Ao, Vivian C. Niu, Xiao Xiao, Lei Jiang, Marat Khodoun, Marc Rothenberg, Ken Mackie, Jun Chen, Luke P. Lee, Feng Guo
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-9 (2023)
Treating acute disease like anaphylaxis is challenging due to the inability to administer therapeutics in a timely manner and regulate pharmacokinetics precisely within a short time window. Here the authors develop active acoustic metamaterials-drive
Externí odkaz:
https://doaj.org/article/3897913d9a1f4303a8911ee43f96767c
Publikováno v:
Journal of Materials Research and Technology, Vol 21, Iss , Pp 2118-2132 (2022)
In this study, fine position samples of heat affected zone under single and secondary thermal cycles were simulated by heat treatment method. The influence of secondary thermal cycle on softening behavior and mechanism of heat affected zone in TIG-we
Externí odkaz:
https://doaj.org/article/3dce68b5f2ad4dd0b2c2bf7f7386b4c2
Autor:
Yang Li, Qinling Zhou, Jiating Wu, Junhua Xu, Weilong Shi, Chao Su, Daifen Chen, Zongping Shao
Publikováno v:
npj Flexible Electronics, Vol 6, Iss 1, Pp 1-7 (2022)
Abstract Until now, conventional nanogenerators could only produce electric pulses with relatively low-power densities. Herein, we invent a novel controllable growth technique for two-dimensional (2-D) cuprous oxide (p-Cu2O) single-crystal films, and
Externí odkaz:
https://doaj.org/article/a17a7916d2b749dea28b73779da05740