Results 31 to 40 of about 3,387,209 (298)

Loss reduction analysis and control of AC-voltage-boosted FBSM MMC by injecting second harmonic circulating current

The Journal of Engineering, 2019
Reducing the power loss and handling short-circuit faults in HVDC systems are crucial for economical and reliable operation of modular multilevel converters (MMC). This paper proposes a loss reduction method for AC voltage-boosted FBSM-MMC by controlling
Muchao Xiang, Jiabing Hu, Zhiyuan He
doaj   +1 more source

Effect of Pole and Slot Combination on the AC Joule Loss of Outer-Rotor Permanent Magnet Synchronous Motors Using a High Fill Factor Machined Coil

Energies, 2021
This paper proposes a design guideline for selecting the pole and slot combination of an outer-rotor permanent magnet synchronous motor (PMSM) using a maximum slot occupation (MSO) coil.
Soo-Hwan Park, Eui-Chun Lee, Gi-Ju Lee, Soon-O. Kwon, Myung-Seop Lim   +4 more
doaj   +1 more source

Analysis of Copper Loss of Permanent Magnet Synchronous Motor With Formed Transposition Winding

IEEE Access, 2021
In recent years, the hairpin winding flat wire motor has received more and more attention because of its high power density and high torque, but the problem of increased AC copper loss caused by the increase of its wire diameter has restricted the use of
Yanping Liang, Fuchao Zhao, Kangwen Xu, Weihao Wang, Jia Liu, Peipei Yang   +5 more
doaj   +1 more source

The net zero mass loss phenomenon on opening switching contacts with AC loading [PDF]

, 1999
Studies are conducted on silver metal oxide contacts on a purposed built apparatus to investigate the extent of contact erosion under opening (break) operations.
J.W. McBride, Swingler, Jonathan, McBride, John W., Swingler, J., McBride, J.W., J. Swingler   +5 more
core   +1 more source

Introdução e avaliação de cultivares e porta-enxertos de citros em Rio Branco-AC. [PDF]

, 1992
O presente estudo tem como objetivo avaliar o desempenho de 17 cultivares e 4 porta-enxertos de citros, nas condições edafoclimáticas de Rio Branco ...
AZEVEDO, F. F. de, RITZINGER, C. H. S. P., RITZINGER, R., LEDO, A. da S.   +3 more
core   +1 more source

Benefattori dall’aldilà: i lasciti per i lavori edilizi di pubblica utilità a Bologna (secoli XIII e XIV)

, 2021
La trattazione riguarda i benefattori, i donatori che hanno deciso a Bologna di contribuire al bene comune non tramite le tradizionali istituzioni caritatevoli, quali ospedali, conventi e monasteri, ma anche attraverso l’investimento dei loro beni nel ...
Edward Loss
core   +1 more source

Corneal endothelial cell changes and surgical results after Ahmed glaucoma valve implantation: ciliary sulcus versus anterior chamber tube placement

Scientific Reports, 2021
We compared the changes in corneal endothelial cells and surgical outcomes after Ahmed glaucoma valve (AGV) implantation with the valve tip inserted either into ciliary sulcus (CS) or anterior chamber (AC). We retrospectively reviewed the medical records
Joo Yeon Kim, Jihei Sara Lee, Taekjune Lee, Duri Seo, Wungrak Choi, Hyoung Won Bae, Chan Yun Kim   +6 more
doaj   +1 more source

Computationally Efficient Stator AC Winding Loss Analysis Model for Traction Motors Used in High-Speed Railway Electric Multiple Unit

IEEE Access, 2022
The aim of this proposed work is to develop a computationally efficient and accurate AC winding loss analysis model for the traction motors for use in high-speed railways (HSRs).
Pil-Wan Han, Un-Jae Seo, Sarbajit Paul, Junghwan Chang   +3 more
doaj   +1 more source

Experimental and Numerical Study on Stray Loss in Laminated Magnetic Shielding Under 3-D AC-DC Hybrid Excitations for HVDC Transformers

IEEE Access, 2020
To investigate the stray loss in magnetic shielding components immersed in the 3-D AC-DC hybrid leakage magnetic field, a modified method is presented with the variation of the eddy current loss inside the coil due to the change of the leakage magnetic ...
Xiaojun Zhao, Yuezhi Cao, Zhiguang Cheng, Behzad Forghani, Lanrong Liu, Jiawen Wang   +5 more
doaj   +1 more source

Estimation of AC loss in cylindrical superconductor with ripple current [PDF]

, 2012
The loss energy density (AC loss) in cylindrical superconductor with ripple current based on Irie-Yamafuji model in which the magnetic fiel dependence of critical current density is taken into account is theoretically calculated for design of DC ...
0000-0001-9880-8240, 16592, 16591, 90304758, 40661626600, Yamaguchi, S., Ohashi, K., Kiuchi, Masaru, 572, キウチ, マサル, 210, Otabe, Edmund Soji, オタベ, エドモンド ソウジ, 631, 木内, 勝, 205, Kawahara, T., 小田部, エドモンド 荘司, 16589, 30231236, 7003400054   +20 more
core   +5 more sources