Investigation of the Erosion Characteristics in the Distribution Parts of Pelton Turbine

The main objective of this paper is analysis of stress in the distributor to find out optimum thickness for safe and satisfactory working at different load condition. To describe how different plate segments required fabricating wyes branches to ensure greater reliability. The distributor of Pelton turbine consists of pipe segments and wyes branches which are then connected to nozzle. A wyes branch, where the distributor bifurcates has a very complex shape and is very difficult to design. A practical case of distributor of 6 jets vertical Pelton turbine of 43 MW power has been carried but using UG-NX software.

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Control of an Open-Loop Hydraulic Offshore Wind Turbine Using a Variable-Area Orifice

Volume 9: Ocean Renewable Energy ◽

10.1115/omae2015-41388 ◽

2015 ◽

Cited By ~ 1

Author(s):

Daniel Buhagiar ◽

Tonio Sant ◽

Marvin K. Bugeja

Keyword(s):

Wind Turbine ◽

Wind Turbines ◽

Sea Water ◽

Open Loop ◽

Offshore Wind ◽

Offshore Wind Turbine ◽

Electrical Transmission ◽

Pelton Turbine ◽

Hydroelectric Energy ◽

Fixed Line

The viability of offshore wind turbines is presently affected by a number of technical issues pertaining to the gearbox and power electronic components. Current work is considering the possibility of replacing the generator, gearbox and electrical transmission with a hydraulic system. Efficiency of the hydraulic transmission is around 90% for the selected geometries, which is comparable to the 94% expected for conventional wind turbines. A rotor-driven pump pressurises seawater that is transmitted across a large pipeline to a centralised generator platform. Hydroelectric energy conversion takes place in Pelton turbine. However, unlike conventional hydro-energy plants, the head available at the nozzle entry is highly unsteady. Adequate active control at the nozzle is therefore crucial in maintaining a fixed line pressure and an optimum Pelton turbine operation at synchronous speed. This paper presents a novel control scheme that is based on the combination of proportional feedback control and feed forward compensation on a variable area nozzle. Transient domain simulation results are presented for a Pelton wheel supplied by sea water from an offshore wind turbine-driven pump across a 10 km pipeline.

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

Wind Energy Science ◽

10.5194/wes-3-615-2018 ◽

2018 ◽

Vol 3 (2) ◽

pp. 615-638 ◽

Cited By ~ 4

Author(s):

Sebastiaan Paul Mulders ◽

Niels Frederik Boudewijn Diepeveen ◽

Jan-Willem van Wingerden

Keyword(s):

Wind Turbine ◽

Control Design ◽

Business Case ◽

Torque Control ◽

Offshore Wind ◽

Pelton Turbine ◽

Torque Control Strategy ◽

Control Scheme ◽

Active Valve ◽

Electrical Generator

Abstract. 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 opportunity for application in multi-megawatt turbines. The Delft Offshore Turbine (DOT) is a hydraulic wind turbine concept replacing conventional drivetrain components with a single seawater pump. Pressurized seawater is directed to a combined Pelton turbine connected to an electrical generator on a central multi-megawatt electricity generation platform. This paper presents the control design, implementation, and evaluation for an intermediate version of the ideal DOT concept: an in-field 500 kW hydraulic wind turbine. It is shown that the overall drivetrain efficiency and controllability are increased by operating the rotor at maximum rotor torque in the below-rated region using a passive torque control strategy. An active valve control scheme is employed and evaluated in near-rated conditions.

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Mathematical Model for the Effect of Blade Friction on the Performance of Pelton Turbine

International Journal of Fluid Machinery and Systems ◽

10.5293/ijfms.2011.4.4.396 ◽

2011 ◽

Vol 4 (4) ◽

pp. 396-409

Author(s):

Iresha Udayangani Atthanayake ◽

Thusitha Sugathapala ◽

Rathna Fernando

Keyword(s):

Mathematical Model ◽

Pelton Turbine

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Inspection of HVOF-coated Pelton turbine using laser thermography

10.21611/qirt.2018.078 ◽

2018 ◽

Author(s):

J. Délémontez ◽

Y. Caulier ◽

M. Taglione ◽

T. Busalb ◽

E. Martin

Keyword(s):

Pelton Turbine

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Effect of Flow Parameters on Pelton Turbine Performance by Using Different Nozzles

International Journal of Modeling and Optimization ◽

10.7763/ijmo.2017.v7.571 ◽

2017 ◽

Vol 7 (3) ◽

pp. 128-133 ◽

Cited By ~ 3

Author(s):

Saif Aldeen Saad Obayes ◽

◽

Mohammed Abdul Khaliq Qasim

Keyword(s):

Pelton Turbine ◽

Flow Parameters ◽

Turbine Performance

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Development of a self-rechargeable digital water flow meter

Journal of Hydroinformatics ◽

10.2166/hydro.2013.098 ◽

2013 ◽

Vol 15 (3) ◽

pp. 888-896 ◽

Cited By ~ 2

Author(s):

Songhao Wang ◽

Ronald Garcia

Keyword(s):

Water Flow ◽

Water Pressure ◽

Communication Technologies ◽

Turbine Generator ◽

Flow Meter ◽

Flow Meters ◽

Pelton Turbine ◽

Zigbee Technology ◽

Diameter Pipe ◽

Water Meters

The objective of this paper is to present the feasibility of a self-rechargeable digital water flow meter (SRDFM) system for water pipes using the latest data processing and wireless communication technologies while causing negligible water pressure drop (head loss). The system uses a Pelton turbine generator to power the electronic circuit, which processes and transmits the signals generated by several flow meters. ZigBee technology was used to process and send wireless signals. Signals from two water meters were acquired, processed, and transmitted with only one control/transmission unit during this study. The new system was assessed experimentally, reaching a maximum of 80 m of wireless transmittance distance at a minimum flow rate of 5 L/min for a 16-mm diameter pipe (self-charged).

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