Results 31 to 40 of about 192 (166)

MODELING AND STUDY OF HYDROELECTRIC GENERATING SETS OF SMALL HYDRO POWER PLANTS WITH FREQUENCY-CONTROLLED PERMANENT MAGNET SYNCHRONOUS GENERATORS

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2016
Currently, the hydroelectric generating sets of small HPPs with Pelton turbines employ as their generating units conventional synchronous generators with electromagnetic excitation.
R. I. Mustafayev, L. G. Gasanova, M. M. Musayev   +2 more
doaj   +1 more source

Analogy Between Micro-Hydroelectric and Small-Wind Energy Conversion Systems and Validation of Simple and Effective Maximum Power Point Tracking Techniques

IEEE Open Journal of the Industrial Electronics Society
This article presents an analogy between micro-hydroelectric and small wind energy conversion systems, validating two commonly used power extraction methods. Although this article focuses on the Pelton hydroelectric turbine, most of the analysis, methods,
Ander Plaza, Gonzalo Abad, Gorka Kerejeta   +2 more
doaj   +1 more source

Adaptive Turbine Replacement Improves Hydropower Flexibility in a Changing Climate

Water Resources Research, Volume 62, Issue 8, August 2026.
Abstract Hydropower plants will operate under new conditions as water regimes shift, reservoir operating rules evolve, and the grid requires flexible balancing of wind and solar. Hydropower plant turbine systems are traditionally designed to operate at the highest efficiency within narrow ranges of flow and reservoir levels while deviations from design
Veysel Yildiz, Nathalie Voisin, Marta Zaniolo   +2 more
wiley   +1 more source

Integrated Renewable Energy for Urban and Remote Communities: Hybrid Solutions with Hydro Pumped Storage and Green Hydrogen Opportunities

Advanced Sustainable Systems, Volume 10, Issue 5, May 2026.
Urban and remote communities face inefficiencies from centralized power grids. This study assesses hybrid renewable energy systems with storage, integrating pumped hydro and hydrogen. Through modeling and optimization, demand–supply balance improves. The base case achieves low LCOE, strong returns, and energy export potential.
Helena M. Ramos, J. E. Q. Fuentes, E. Bekçi, Oscar E. Coronado‐Hernández, Alban Kuriqi, Rui Castro, Modesto Pérez‐Sánchez   +6 more
wiley   +1 more source

Using Multiple Regression Models and Methods to Estimate Fatigue‐Life Distributions and Construct Constant‐Life Diagrams

Applied Stochastic Models in Business and Industry, Volume 42, Issue 2, March/April 2026.
ABSTRACT Fatigue is the most common reliability failure mechanism and has been studied widely since the 19th century. Material specimens are used in laboratory experiments to obtain fatigue test data. An S‐N curve is used to depict the relationship between the stress (or strain) S$$ S $$ and the number of cycles to failure N$$ N $$. Statistical methods
Diaz F. Aksioma, William Q. Meeker, Huaiqing Wu   +2 more
wiley   +1 more source

Control design, implementation, and evaluation for an in-field 500 kW wind turbine with a fixed-displacement hydraulic drivetrain [PDF]

Wind Energy Science, 2018
The business case for compact hydraulic wind turbine drivetrains is becoming ever stronger, as offshore wind turbines are getting larger in terms of size and power output. Hydraulic transmissions are generally employed in high-load systems and form an
S. P. Mulders, N. F. B. Diepeveen, J.-W. van Wingerden   +2 more
doaj   +1 more source

Comparative Numerical Studies for the Flow Energy Dissipation Features in a Vertical Two‐Stage Centrifugal Pump in Pump and Turbine Conditions

Energy Science &Engineering, Volume 14, Issue 2, Page 764-779, February 2026.
Based on entropy theory, this study presents a comparative numerical analysis of the flow energy dissipation (FED) in a VTSP under two distinct operating conditions: pump condition and turbine condition, both characterized by relatively high hydraulic efficiencies of 88.9% and 87.4%, respectively. In pump condition, the highest FED production occurs in
S. Liu, T. P. Chen, Y. Li, M. Q. Liang, Y. J. Zhang, X. Z. Wei   +5 more
wiley   +1 more source

Potential of the Archimedes screw to generate sustainable green energy for mini, micro, and pico hydro Turbine power stations: An extensive analysis

Energy Strategy Reviews
The Archimedes Screw Turbine (AST) is an innovative type of hydroelectric power plant that can be particularly useful in locations with very low-head sites (less than 10 m head).
Robin Thakur, Tanish Kashyap, Raj Kumar, Raj Kumar Saini, Daeho Lee, Sushil Kumar, Tej Singh   +6 more
doaj   +1 more source

Dual Frequency Regulation in Pumping Mode in a Wind–Hydro Isolated System

Energies, 2018
Frequency control is one of the most critical tasks in isolated power systems, especially in high renewable penetration scenarios. This paper presents a new hydropower pumped-storage dual control strategy that combines variable-speed-driven pumps and ...
José Ignacio Sarasúa, Guillermo Martínez-Lucas, Carlos A. Platero, José Ángel Sánchez-Fernández   +3 more
doaj   +1 more source

A Comprehensive Review on Investigation of Sediment Erosion of Pelton Wheel Turbine

Pakistan Journal of Engineering & Technology, 2022
Hydro turbines installed at different hydropower plants face the issue of sediment erosion. Sediment erosion is an ambiguous phenomenon influenced by several parameters, including silt concentration, size, jet velocity, diameter, and fluid viscosity ...
Sati Ullah, M. Rehan Khan, Tariq Talha, M. Nasir Bashir, M. Ali Khan, Aurang Zaib   +5 more
doaj   +1 more source