Showing 81 - 90 of 18,224
In the research field of multilevel converters, three-level NPC (neutral-point-clamped) converters, which unfortunately may cause the deviation of the neutral-point voltage of DC-link capacitors, are widely discussed. Theoretically, virtual space vector modulation (VSVM) could guarantee the...
Persistent link: https://www.econbiz.de/10011200287
The Taylor vortex flow in the plain model with a constant temperature gradient effect was studied by experimental measurement, and the preliminary features of Taylor vortex flow affected by heat transfer process were obtained. This flow field in the plain model was also studied by numerical...
Persistent link: https://www.econbiz.de/10011200288
Increasing the feed total solids to anaerobic digester improves the process economics and decreases the volume of liquid effluent from current wet anaerobic digestion. The objective of this study was to develop a novel psychrophilic (20 °C) anaerobic digestion technology of undiluted cow feces...
Persistent link: https://www.econbiz.de/10011200289
Energy industries account for a significant portion of total rare earth usage, both in the US and worldwide. Rare earth minerals are frequently collocated with naturally occurring radioactive material, imparting an occupational radiological dose during recovery. This paper explores the extent to...
Persistent link: https://www.econbiz.de/10011200290
Waste heat recovery from high temperature slags represents the latest potential way to remarkably reduce the energy consumption and CO<sub>2</sub> emissions of the steel industry. The molten slags, in the temperature range of 1723–1923 K, carry large amounts of high quality energy. However, the heat...
Persistent link: https://www.econbiz.de/10011200291
An air-breathing direct formic acid microfluidic fuel cell, which had a self-made anode electrode of 10 mg/cm<sup>2</sup> Pd loading and 6 mg/cm<sup>2</sup> Nafion content, was fabricated and tested. The microfluidic fuel cell was achieved by bonding a PDMS microchannel that was fabricated by a soft-lithography...
Persistent link: https://www.econbiz.de/10011203085
The Li-ion battery is becoming the optimal choice for the Electric Vehicle’s (EV) power supply. In order to protect the Li-ion battery from charging damage and to prolong the battery’s life, a special control strategy based on the dynamic balanced point along with a non-dissipative equalizer...
Persistent link: https://www.econbiz.de/10011203086
We present a thermo-economic evaluation of binary power plants based on the Organic Rankine Cycle (ORC) for geothermal power generation. The focus of this study is to analyse if an efficiency increase by using zeotropic mixtures as working fluid overcompensates additional requirements regarding...
Persistent link: https://www.econbiz.de/10011203087
In this study, to achieve the constant current drive and brightness control without a separate pulse width modulation (PWM) converter, a single converter is designed and verified by experiment under the condition of a multiple LED light load with different output voltage (Vf) characteristics. In...
Persistent link: https://www.econbiz.de/10011206267
In power systems, although the inertia energy in power sources can partly cover power unbalances caused by load disturbance or renewable energy fluctuation, it is still hard to maintain the frequency deviation within acceptable ranges. However, with the vehicle-to-grid (V2G) technique, electric...
Persistent link: https://www.econbiz.de/10011206268