Zobrazeno 1 - 10
of 5 423
pro vyhledávání: '"variable frequency"'
Publikováno v:
Zhejiang dianli, Vol 43, Iss 10, Pp 27-34 (2024)
To address the issue of insufficient grid inertia support caused by the large-scale integration of renewable energy， a synchronous condenser model of a flywheel energy storage system， along with a control scheme， is developed based on permanent
Externí odkaz:
https://doaj.org/article/33830f6e36864fa5b30c9a410339509b
Autor:
M. S. Ershov, E. S. Efimov
Publikováno v:
Горные науки и технологии, Vol 9, Iss 3, Pp 292-303 (2024)
The use of a variable frequency drive (VFD) for sucker-rod pump units (SRPUs), widely employed in oil extraction, enhances the energy and technological efficiency of oil production and reduces equipment wear. However, its application is hindered by u
Externí odkaz:
https://doaj.org/article/1d93c5b05f7442f681979ef684315a62
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:
Shanshan Wu, Letao Yu
Publikováno v:
Measurement: Sensors, Vol 36, Iss , Pp 101308- (2024)
In order to solve the problems of long adjustment time and poor stability of the commonly used speed current variable frequency negative feedback speed control system in engineering, the author proposes an improved fish school algorithm application m
Externí odkaz:
https://doaj.org/article/1dafe4bebb4042a1b195867aa97238a8
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 42, Iss 3, Pp 460-466 (2024)
The power grid of a multi-electric aircraft is a typical isolated island microgrid with a wide frequency range from 360 to 800 Hz. The dynamic performance of the traditional constant-frequency power grid synchronization method is insufficient in the
Externí odkaz:
https://doaj.org/article/cef0e94d25234763b73cf67cdcb059f3
Publikováno v:
Eletrônica de Potência, Vol 29, Pp e202432-e202432 (2024)
This paper proposes a coordinated centralized/decentralized control designed to concomitantly manage the power factor and mitigate voltage variations at the main feeder of an oil and gas offshore platform. The centralized action (i.e., power factor c
Externí odkaz:
https://doaj.org/article/c737c1f98aa84e598a117cd0f9e339f1
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
Autor:
Wei, Chenxu a, b, Guo, Yabin a, ⁎, Li, Yuduo a, Wang, Yuhua a, Liu, Yaxin a, Du, Congcong a, Zhang, Linhan a
Publikováno v:
In Energy 30 December 2024 313
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