Results 31 to 40 of about 514,782 (282)
Hybrid AC and DC power distribution
Ceylon Journal of Science, 2017 Interest in the use of DC for medium and low voltage distribution circuits is growing as a means of reducing the multiple power conversion stages associated with connecting renewable energy sources and DC powered consumer electronic devices to the ...
S. Jayawardena +2 more
doaj +1 more source
A 86%‐efficiency CMOS rectifier with an internal threshold voltage cancellation (IVC) scheme
Electronics Letters, 2022 In this letter, the authors present a high‐efficiency AC‐to‐DC rectifier for a wireless power transmission system with an internal threshold voltage cancellation (IVC) scheme to improve power conversion efficiency (PCE) and voltage conversion ratio (VCR).
Byeongseol Kim, Joonsung Bae
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Two-Stage Power Conversion Architecture Suitable for Wide Range Input Voltage [PDF]
, 2014 This paper presents a merged-two-stage circuit topology suitable for either wide-range dc input voltage or ac line voltage at low-to-moderate power levels (e.g., up to 30 W).
Lim, Seungbum +3 more
core +1 more source
Analysis of energy processes in pulse converters of AC electric power
Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2015 The article presents the analysis of energy processes in switched-mode AC-AC converters of buck, boost and buck-boost types. The mathematical model of energy processes is obtained.
A. F. Kadatsky, A. P. Rusu
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Hybrid Feedback Control Methods for Robust and Global Power Conversion [PDF]
, 2015 In this paper, the applicability and importance of hybrid system tools for the design of control algorithms for energy conversion in power systems is illustrated in two hybrid control designs, one pertaining to DC/DC conversion and the other to DC/AC ...
Chai, J, Sanfelice, RG
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Energies, 2022 Variable voltage and frequency are required to govern the torque-speed characteristics of many industrial drive systems. Traditionally, this is achieved with a power converting system implemented with multistage converters.
Naveed Ashraf +6 more
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Impacts on Power Factor of AC Voltage Controllers Under Non-Sinusoidal Conditions [PDF]
Mehran University Research Journal of Engineering and Technology, 2012 AC-AC conversion is obtained with the help of Cyclo-converters, DC Link converters and AC Voltage Controllers. AC voltage controllers are also referred to as voltage regulators.
Mukhtiar Ahmed Mahar +2 more
doaj
Sultan Qaboos University Journal for Science, 1997 This paper presents an in-depth analytical and experimental investigation of an indirect DC-DC converter. The DC-AC conversion is a full bridge based on IGBT power modules, and the AC-DC conversion is done via a high frequency AC link and a first diode ...
M. Akherraz
doaj +1 more source
Matrix Converter-Based Unified Power-Flow Controllers: Advanced Direct Power Control Method [PDF]
, 2011 This paper presents a direct power control (DPC) for three-phase matrix converters operating as unified power flow controllers (UPFCs). Matrix converters (MCs) allow the direct ac/ac power conversion without dc energy storage links; therefore, the MC ...
Monteiro, Joaquim +3 more
core +1 more source
FEBS Letters, EarlyView.Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi +5 more
wiley +1 more source