Results 21 to 30 of about 9,125,519 (306)

Research on mine pump motor energy saving test system and dynamic loading characteristics

open access: yes矿业科学学报, 2018
The test technology of hydraulic simulation loading and hydraulic power recovery are used to design an energy saving test system for mine pump and motor,and the dynamic load characteristics of the test system are analyzed and simulated in AMESim.Research
Wu Yong   +3 more
doaj   +1 more source

Energy recovery power supply for piezoelectric actuator [PDF]

open access: yesIECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society, 2014
Piezoelectric actuators are used successfully to enable locomotion of micro-robot such as micro air vehicle with flapping wings. However, the use of piezoelectric actuators presents a major challenge for power electronic design: the input capacitance of such devices makes their use delicate because the instantaneous power may be much greater than the ...
Vasic, Dejan, Costa, François
openaire   +2 more sources

Design and Potential Power Recovery of Two Types of Energy Harvesting Shock Absorbers

open access: yesEnergies, 2019
Numerous authors have studied Energy Harvesting Shock Absorbers (EHSA) over the last decade, proposing different designs with diverse geometries, parameters, and components.
L. Bowen   +2 more
semanticscholar   +1 more source

Condenser Optimization of Heat Pipe

open access: yesCommunications, 2014
Construction of heat exchanger assembly has important role for efficient operation of energy systems. Within this assembly a heat pipe is utilized for heat transfer. The condensation part of the heat pipe is situated on top of the heating zone.
Radovan Nosek   +4 more
doaj   +1 more source

Analysis of the Interactive Influence of the Active Power Recovery Rates of DFIG and UHVDC on the Rotor Angle Stability of the Sending-End System

open access: yesIEEE Access, 2019
At present, systems for wind power transmission by ultra-high voltage direct current (UHVDC) and ultra-high voltage alternating current (UHVAC) have been constructed and are operating in China. The installed capacity of the doubly fed induction generator
Yan Zhang   +5 more
semanticscholar   +1 more source

Oil Contact Angles in a Water-Decane-Silicon Dioxide System: Effects of Surface Charge

open access: yesNanoscale Research Letters, 2018
Oil wettability in the water-oil-rock systems is very sensitive to the evolution of surface charges on the rock surfaces induced by the adsorption of ions and other chemical agents in water flooding.
Shijing Xu   +5 more
doaj   +1 more source

Physical simulation of improving the uniformity of steam chamber growth in the steam assisted gravity drainage

open access: yesPetroleum Exploration and Development, 2013
In steam assisted gravity drainage (SAGD) process, there is an uneven distribution of steam chamber growth along the whole length of the horizontal well. In order to solve this problem, a three-dimensional high-pressure physical model of a SAGD well pair
Desheng MA   +5 more
doaj   +1 more source

Simplified Recovery Process for Resistive Solder Bond (RSB) Hotspots Caused by Poor Soldering of Crystalline Silicon Photovoltaic Modules Using Resin

open access: yesEnergies, 2022
When the thickness of the solar cell wafer and the amount of Ag to be used decreases, it is the best method to recover the power of the module after use at a minimum cost and reuse the module itself.
Koo Lee   +3 more
doaj   +1 more source

GaN HEMT class-E rectifier for DC+AC power recovery

open access: yesIntelligent Memory Systems, 2017
A 915 MHz GaN HEMT-based class-E rectifier is proposed in this paper to be used for DC+AC wireless power recovery. Taking advantage of the time reversal (TR) duality principle, the rectifier was derived from a class-E inverter, whose output network was ...
M. Ruiz   +3 more
semanticscholar   +1 more source

Machinery Early Fault Detection Based on Dirichlet Process Mixture Model

open access: yesIEEE Access, 2019
The most commonly used single feature-based anomaly detection method for the complex machinery, such as large wind power equipment, steam turbine generator sets, and reciprocating compressors, exhibits a defect of low-alarm accuracy due to the non ...
Bo Ma   +4 more
doaj   +1 more source

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