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37.780  Articles
1 of 3.778 pages  |  10  records  |  more records»
Due to high water pressure in the concrete reinforced hydraulic tunnels, surrounding rocks are confronted with nonlinear seepage problem in the pumped storage power station. In this study, to conduct nonlinear seepage numerical simulation, a nonlinear see... see more

Taiwan’s power system is isolated and not supported by other interconnected systems. Consequently, the system frequency immediately reflects changes in the system loads. Pumped storage units are crucial for controlling power frequency. These units provide... see more

The cavitation phenomena cause noise, vibration and instability in centrifugal pumps. Furthermore, the cavitation usually generates wear and material erosion of the rotor blades which decreases the hydraulic performance and the pump life. In this work, it... see more

A fully integrated regulated charge pump is designed in 1.2/2.5-V 90-nm CMOS technology. The charge pump exploits two control schemes to provide stable output voltage with small ripple output voltage and high current load drivability. The first is automat... see more

The study addresses the development of a method for the optimal design of vacuum-evaporative heat pump plants (HPP) for a cooling system of technological equipment of the second circuit at a nuclear power plant (NPP) using modern methods of thermodynamic ... see more

Screw agitators rotating in tubes are very efficient tools for mixing and pumping viscous liquids. The power characteristic of the agitator-tube assembly must be known to enable its power consumption in a given configuration to be calculated. The dimensio... see more

Wind and solar PV have become the lowest-cost renewable alternatives and are expected to dominate the power supply matrix in many countries worldwide. However, wind and solar are inherently variable renewable energy sources (vRES) and their characteristic... see more

In vertical shaft pump turbines operating in pumped storage power plants an important role is played by a thrust bearing. Due to the bidirectional character of operation, thrust bearing tilting pads have to be supported symmetrically, which is known to be... see more

The multi-channel (MC) back-to-back voltage source inverter (VSI)-fed doubly fed induction machine (DFIM) is emerging as a highly interesting topic in large-rated variable speed pumped-storage power plants (PSPP) in view of cost, optimal efficiency, and s... see more

1 of 3.778 pages  |  10  records  |  more records»