Results 61 to 70 of about 247 (148)

Nonlinear frequency-domain analysis of motion suppression for moored vessels using hydraulic auxiliary mooring systems

open access: yesApplied Ocean Research
Hydraulic auxiliary mooring (HAM) systems, as an advanced mooring technology, enhance harbor operational safety and efficiency by suppressing vessel motions. Despite their practical implementations worldwide, publicly available research literature on the
Chuanlong Xin, Yanji Wei, Heng Jin
doaj   +1 more source

An Integrated Tuned Hydro-PTO Semi-Submersible Platform for Deep-Sea Wind-Wave Cogeneration: Design, Hydrodynamic Analysis

open access: yesEnergies
The ocean offers abundant wind and wave energy resources. This paper proposes an integrated concept that co-locates a semi-submersible floating wind platform with wave energy converters (WECs) to exploit the geographical consistency of these resources ...
Guohua Wang   +8 more
doaj   +1 more source

Comparison of Two Alternative Hydraulic PTO Concepts for Wave Energy Conversion

open access: yes, 2011
Hydraulic Power Take Off (PTO) systems for wave energy usually fall into two broad categories. These are, firstly, variable pressure systems where control of the primary force/torque is achieved by pressure modulation, and secondly, constant pressure systems where control of the primary force/torque is achieved by valve transitions that select between ...
Costello, Ronan   +2 more
openaire   +1 more source

Test and demonstration carriage for tractor-powered implements

open access: yesAgricultural and Food Science, 1968
A movable test and demonstration carriage for tractor-powered implements (Figure 1) was constructed mainly for machine demonstrations to the agricultural students at the University of Helsinki.
Erkki H. Oksanen
doaj  

Study on the Dynamic Response of a Heaving Buoy with an Accumulator-Integrated Hydraulic Power Take-Off System Under Dam-Break Flow Using a Modified Moving Particle Semi-Implicit Method

open access: yesJournal of Marine Science and Engineering
The moving particle semi-implicit (MPS) method is employed to investigate the dynamic response of a wave energy converter (WEC) buoy subjected to dam-break flows.
Jun Wang, Zhaode Zhang, Date Li
doaj   +1 more source

High-frequency current source converter for a direct drive powertrain in a wave energy converter

open access: yesThe Journal of Engineering, 2019
Wave energy converters (WECs) generally use a mechanical solution such as hydraulics or gearing to optimise the extraction of energy from the incoming waves prior to converting it into electrical energy via a high-speed rotating generator.
Stephen P. McDonald   +2 more
doaj   +1 more source

Quasi-Static Tractor Implement Model for Assessing Energy Savings in Partial Electrification

open access: yesEnergies
This paper presents a quasi-static model for assessing potential energy savings through partial electrification of a land leveler implement. The quasi-static model simulates the behavior of the hydraulic circuit components, including the pump and a spool-
Matteo Berto   +2 more
doaj   +1 more source

Modeling and testing of the point absorber system to convert Sea Wave Energy into electrical energy

open access: yesنشریه مهندسی دریا, 2020
Sea waves are an important source of environmental energy which can be converted into energy needed for different purposes. In current study, a floating-point absorber (FPA) wave energy converter is simulated, built, and tested.
Mohamadreza Negahdari   +4 more
doaj  

DEVELOPMENT AND PERFORMANCE EVALUATION OF TRACTOR FRONT MOUNTED PIGEON PEA STEM CUTTER [PDF]

open access: yesIranica Journal of Energy and Environment, 2010
Pigeon pea or tur (Cajanus cajan L. Mills.) is one of the important pulse crops of India and ranks second to chickpea in area and production. Traditionally the harvesting of pigeon pea is done manually by sickle, which demands considerable amount of ...
Atul R. Dange, S.K.Thakare
doaj  

Failure Consequence Cost Analysis of Wave Energy Converters—Component Failures, Site Impacts, and Maintenance Interval Scenarios

open access: yesJournal of Marine Science and Engineering
In the early stages of developing wave energy converter (WEC) projects, a quantitative assessment of component failure consequence costs is essential. The WEC types, deployment site features, and accessibility should all be carefully considered.
Mitra Kamidelivand   +7 more
doaj   +1 more source

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