Results 21 to 30 of about 6,211,757 (240)
发电技术, 2018 It will lead to the problem of frequency adjustment when the large-scale new energy integrated in the power grid, and large capacity power energy storage is one of the effective solutions for the problem.
Xiankui WEN +4 more
doaj +1 more source
A Boost CLLC Converter Controlled by PWM and PFM Hybrid Modulation for Photovoltaic Power Generation
IEEE Access, 2020 When an input terminal is connected to a solar panel with a low voltage level and large power range fluctuation, a Boost type CLLC converter controlled by fixed frequency pulse width modulation (PWM) reduces the utilization of PV electric energy, and the
Zhe Shi +3 more
doaj +1 more source
IEEE Access, 2023 This paper proposes a bidirectional three-level T-type LLC resonant DC-DC converter operating with phase-shift control, which is simple and effective, variable frequency modulation to perform soft switching in a wide voltage ratio range and light loads ...
Kemal Kalayci +3 more
doaj +1 more source
Taiyuan Ligong Daxue xuebao[Purposes] At present, the high proportion of new energy connected to the power system leads to severe challenges to its frequency stability and power quality.
XIAO Chun
doaj +1 more source
Energy Reports, 2022 Due to the large-scale popularization of renewable energy, the rotational inertia of modern power system is reduced, which increases the risk of power system failure and power outage when disturbance events occur.
Tao Zhou +3 more
doaj +1 more source
Bit error simulation of DQPSK for a slow frequency hopping CDMA system in mobile radio communications [PDF]
, 1995 Spread spectrum (SS) techniques seem to be an attractive alternative to conventional narrow-band modulation. In this paper a frequency hopping (FH) system model based on slow FH (SFH) is proposed.
Mortazavi, SH +3 more
core +1 more source
Extremely low frequency based communication link [PDF]
, 2009 The paper discusses the literature review and the possibility of using the ground itself as transmission medium for various users’ transceivers and an administrator transceiver using Multi-Carrier-Direct Sequence-Code Division Multiple Access (MC-DS-CDMA)
Holmes, Violeta +3 more
core +4 more sources
Influence of periodic pressure on dendritic morphology and sidebranching
China Foundry, 2020 The influence of periodic pressure with low and high frequencies on microstructure and dendritic sidebranching was studied by using 3-D phase field method. In both low and high frequency cases, the variation trend of SDAS (secondary dendritic arm spacing)
Shan Shang, Zhi-peng Guo, Zhi-qiang Han
doaj +1 more source
IEEE AccessHigh-Frequency Link inverters (HFLIs) have attracted significant research attention owing to their compact design, high power density, and high efficiency.
Asif Ali +4 more
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Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo +5 more
wiley +1 more source