Results 111 to 120 of about 121,204 (311)
Speed Control of DC Motor using AC/AC/DC Converter Based on Intelligent Techniques
Tikrit Journal of Engineering Sciences, 2013 This paper describes the application of ac/ac/dc and ac/dc converters to control the speed of a separately excited DC motor. Artificial neural network and PI controller are trained to select the desired values of firing angles for triggering ...
Rakan Kh Antar
doaj
Recent Progress, Challenges and Outlooks of Insulation System in HVDC
EnergiesIn the modern sense, DC transmission involves converting three-phase AC into stable DC at a converter station, then transmitting it over DC transmission lines to another converter station, where it is inverted back into three-phase AC [...]
Chuyan Zhang
doaj +1 more source
Energies, 2016 The growing attention on plug-in electric vehicles, and the associated high-performance demands, have initiated a development trend towards highly efficient and compact on-board battery chargers.
Jordi Everts
doaj +1 more source
Ultrasound in Women's Health: Mechanisms, Applications, and Emerging Opportunities
Advanced Materials, EarlyView.As healthcare moves toward decentralization, ultrasound technologies are evolving from strictly imaging tools in clinical settings into versatile diagnostic and therapeutic platforms, with growing roles addressing women's health needs. This review highlights how ultrasound's underlying physical mechanisms can be harnessed to reduce disparities in women'
Sarah B. Ornellas +7 more
wiley +1 more source
New Power Electronics Converter Interfacing a Hybrid Dc/Ac Microgrid [PDF]
, 2013 poster abstractDistributed loads can either be ac or dc. It is also possible to combine ac and dc subgrids to form the hybrid microgrid. The main advantage of the hybrid microgrid is that it has higher efficiency and lesser power conversion. In this work
Alibeik, M., dos Santos, Euzeli C., Jr.
core
Bidirectional DC-DC-AC Three-phase Power Converter [PDF]
, 2013 poster abstractThis work proposes a dc-dc-ac three-phase converter in order to interface dc and ac variables allowing a bidirectional power flow. A comprehensive comparison between the proposed and conventional solutions will be addressed highlighting ...
Darabi, M., dos Santos, Euzeli C., Jr.
core +1 more source
Emergent Freestanding Complex Oxide Membranes for Multifunctional Applications
Advanced Materials, EarlyView.This review surveys freestanding oxide membranes and covers fabrication and three pathways for studies and devices: strain‐free and strained membranes, and van der Waals‐integrated heterostructures. We show how coupled oxide responses map onto these routes and cross‐couple to expand behaviors.
Baowen Li +6 more
wiley +1 more source
Configuration 5S: a bi-directional AC-DC converter
Eletrônica de Potência, 2012 This paper proposes a bi-directional ac-dc converter to be applied in Energy-Control-Center (ECC) in order to interface dc variables, such as battery energy storage system and ac conventional utility grid. Such power electronic solution guarantees: (i)
Euzeli Cipriano dos Santos Júnior
doaj +1 more source
Advanced Materials, EarlyView.Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief +12 more
wiley +1 more source
A theoretical and experimental study of low voltage, high current dc to ac converters which use either magnetoresistors, superconductors, Hall effect devices, or thin-film devices Final report [PDF]
Low-voltage, high current dc-ac converter from magnetoresistor, superconductor, Hall effect, or thin-film ...
Bechtel, R., Grannemann, W. W.
core +1 more source