Results 111 to 120 of about 113,766 (308)
Toward a Consensus Characterization Protocol for Organic Thermoelectrics
Advanced Materials, EarlyView.We advocate a common consensus on accurate and standardized reporting of performance metrics in the field of organic thermoelectrics. We summarize prevalent issues in the literature and propose a pre‐submission checklist to support the publication of reproducible results.
Bernhard Dörling +14 more
wiley +1 more source
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
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
A new concept of two-stage multi-element resonant-/cyclo-converter for two-phase IM/SM motor [PDF]
, 2013 The paper deals with a new concept of power electronic two-phase system with two-stage DC/AC/AC converter and two-phase IM/PMSM motor. The proposed system consisting of two-stage converter comprises: input resonant boost converter with AC output, two ...
Abdalmula, Mahmud Ali Rzig
core +2 more sources
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
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
Ac-dc converter firing error detection [PDF]
, 1996 Each of the twelve Booster Main Magnet Power Supply modules consist of two three-phase, full-wave rectifier bridges in series to provide a 560 VDC maximum output. The harmonic contents of the twelve-pulse ac-dc converter output are multiples of the 60 Hz ac power input, with a predominant 720 Hz signal greater than 14 dB in magnitude above the closest ...
openaire +2 more sources
Single-switch AC/DC converter with power factorcorrection
Electronics Letters, 1997 A single-switch, one-stage power factor correction converter with output electrical isolation is proposed. To relieve the voltage spike caused by the leakage inductance of the power transformer, two bulk storage capacitors are used. The proposed converter has both a good power factor correction and excellent line and load regulation capabilities with ...
null Huai Wei +3 more
openaire +3 more sources
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