Performance Analysis of A Floating Power Plant with A Unidirectional Turbine Based Power Module

S. Kedarnath
Indian Institute of Technology Madras, Chennai, India

Prasad Dudhgaonkar
National Institute of Ocean Technology, Chennai, India

Biren Pattanaik
National Institute of Ocean Technology, Chennai, India

Purnima Jalihal
National Institute of Ocean Technology, Chennai, India

V. Jayashankar
Indian Institute of Technology Madras, Chennai, India

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp110572230

Ingår i: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden

Linköping Electronic Conference Proceedings 57:12, s. 2230-2237

Visa mer +

Publicerad: 2011-11-03

ISBN: 978-91-7393-070-3

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


A major attraction of a floating wave power plant as opposed to a fixed Oscillating water column (OWC) plant is in the cost of construction. The price paid is in the lower efficiency of conversion in the hydrodynamic stage. This puts onus on the subsequent power module stage in achieving an efficiency that is necessary for a commercial plant. A new backward bent ducted buoy (BBDB) was designed in which the power module is a twin unidirectional turbine. Basic experimentation on the power module is done on a turbine with 165 mm diameter and characterized with bidirectional flow with widely varying flow rates. The efficiency is shown to be better than 68% over the expected working range. The details of a plant producing 50 kW for Indian conditions is described. The range of powers over which a BBDB structure compares with a fixed OWC is highlighted.


Wave energy; floating power plant; backward bent ducted buoy


[1] Heath; T.; Whittaker; T.J.T & Boake; C.B.; The design; construction and operation of the LIMPET wave energy converter; Wave Energy 2000; 2000

[2] Ohno H.; Funakoshi T.; Saito K.; Oikawa K.; and Takahashi S.; “Interim report on the Second Stage of Field Experiments on a Wave Power Extracting Caisson In Sakata Port;” ODEC; 1993; pp. 173-182.

[3] Marine Energy Challenge: Oscillating Water Column wave energy converter evaluation report; © The Carbon Trust 2005.

[4] Research and development of technology on wave energy utilisation; Jamstec 2004

[5] Masuda Y et al “The BBDB an improved floating type wave power device”; Proceedings Ocean 88; pp 1067-1072.

[6] A.G. Pathak; A. Subramaniam; “ Performance studies on a scaled model BBDB under regular and random waves ”; Proceedings ISOPE; 1999 pp 139-141.

[7] Suzuki et al “Performance of OWC type floating wave power plant employing impulse turbine” 3rd International conference on ocean energy; Bilbao; 2010.

[8] Mala K.; Jayaraj J.; Jayashankar V. et al.; “A twin unidirectional impulse turbine topology for OWC based wave energy plants – Experimental validation and scaling;” Renewable energy 36; 2011; pp. 307-314. doi: 10.1016/j.renene.2010.06.043.

Citeringar i Crossref