Zobrazeno 1 - 10
of 5 346
pro vyhledávání: '"variable frequency"'
Publikováno v:
IET Power Electronics, Vol 17, Iss 10, Pp 1216-1234 (2024)
Abstract LLC series resonant converter (LLC‐SRC) has attracted much attention due to its simple circuit structure and easy realization of soft‐switching. To get a better efficiency, rectifier stage can be realized by the active switches instead o
Externí odkaz:
https://doaj.org/article/dbfdbe73f58a4a15afb874110940fdaf
Autor:
Xinyu Ying, Fangxin Wan, Tongxun Wang, Zepeng Zang, Yanrui Xu, Bowen Wu, Xiaoping Yang, Xiaopeng Huang
Publikováno v:
Ultrasonics Sonochemistry, Vol 108, Iss , Pp 106986- (2024)
This study employed segmented variable-frequency ultrasound synergistic hot-air drying (SVFU-HAD) for Rhubarb slices, selected two sets of time nodes for frequency conversion (60 min, 120 min, and 90 min, 150 min), and two sequences of frequency conv
Externí odkaz:
https://doaj.org/article/19561086cdde425ba2b8540375da724c
Publikováno v:
Heliyon, Vol 10, Iss 14, Pp e34688- (2024)
Objective: Scientific control of wind speed between tobacco leaves can improve quality of tobacco after cured in bulk curing barn. Method: Regarding the light orange color after cured tobacco and high power consumption caused by inaccurate control of
Externí odkaz:
https://doaj.org/article/e691096e2b63495785aa7cc4750ef51b
Autor:
LIU Bo
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 3, Pp 6-13 (2024)
The analysis points out that the current hydraulic pressure technology in coal mines faces challenges such as the inability to quickly and accurately adjust the output pressure and flow rate of fracturing pumps, the need to improve the remote safety
Externí odkaz:
https://doaj.org/article/23075042d38c44f09ad14e87a1776a7a
Autor:
Helio M. A. Antunes, Danilo I. Brandao, Vitor H. M. Biajo, Felipe S. Oliveira, Sidelmo M. Silva
Publikováno v:
IEEE Access, Vol 12, Pp 68149-68159 (2024)
With the current utilization of Floating, Production, Storage, and Offloading (FPSO) units by the petroleum industry, and the trend towards optimizing the energy efficiency of electrical systems, Variable Frequency Drives (VFDs) play a crucial role i
Externí odkaz:
https://doaj.org/article/68b492124ed6488cb3b849760f5cdbde
Publikováno v:
IEEE Open Journal of Industry Applications, Vol 5, Pp 117-127 (2024)
Repetitive controller provides a very low third harmonic dimension in the quantities under control. It exhibits an inherent issue when operated to track variable frequency references. The article deals with the analysis of the operating conditions wh
Externí odkaz:
https://doaj.org/article/0e2d2fbec57e4a01bee3d9786fba6361
Publikováno v:
IEEE Open Journal of Power Electronics, Vol 5, Pp 250-260 (2024)
In this paper an advanced modulation strategy is proposed that generates the switch control signals of a power converter while inherently guaranteeing zero-voltage switching (ZVS) operation. The proposed modulator is based on a first-order $\Delta \S
Externí odkaz:
https://doaj.org/article/892d7a3f02624bf585628189234e7578
Publikováno v:
Signals, Vol 4, Iss 4, Pp 816-835 (2023)
Epilepsy is a complex neurological disorder characterized by recurrent and unpredictable seizures that affect millions of people around the world. Early and accurate epilepsy detection is critical for timely medical intervention and improved patient
Externí odkaz:
https://doaj.org/article/2509051759fa4deb82d07e80b59cf005
Autor:
Orkhan Mammadov, Giuseppe Altieri, Francesco Genovese, Sabina Laveglia, Attilio Matera, Mahdi Rashvand, Luciano Scarano, Giovanni Carlo Di Renzo
Publikováno v:
Applied Sciences, Vol 14, Iss 15, p 6624 (2024)
This study presents the analysis and modeling of the optimal connection between an asynchronous three-phase electrical induction motor and a horizontal centrifuge used in olive oil extraction. The simulation, carried out using the well-established Si
Externí odkaz:
https://doaj.org/article/679a692226e943ba8627854d44271d83