Author
Atmanand
Bio: Atmanand is an academic researcher. The author has contributed to research in topics: Turbine & Oscillating Water Column. The author has an hindex of 2, co-authored 2 publications receiving 47 citations.
Papers
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01 Jan 1998
47 citations
01 Jan 2009
TL;DR: In this paper, a cycle-by-cycle analysis of an OWC-based wave energy plant at Vizhinjam, India has been carried out to identify the performance degradation of the linked guide vane due to mechanical problems.
Abstract: The near shore oscillating water column (OWC) wave energy plant at Vizhinjam, India had twin 1 m Well’s turbines and 1 m linked guide vane impulse turbines as power modules. Performance analysis of the observed records during operation yield significant insight on the dimensioning of the turbine with respect to the caisson. A cycle by cycle analysis of energy capture clearly identifies stalling behavior of the Well’s turbine. Similarly, the performance degradation of the linked guide vane due to mechanical problems could be identified. Such analysis is possible as the electrical machine is an induction generator and the moment of inertia of the system is relatively small. It is clear that optimum dimensioning of the turbine is a must with an OWC based wave energy plant.
3 citations
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TL;DR: In this paper, the progress in wave energy conversion in Europe during the past ten years is reviewed and current activities and initiatives in the wave energy sector at National and Union level are described.
Abstract: The progress in wave energy conversion in Europe during the past ten years is reviewed and current activities and initiatives in the wave energy sector at National and Union level are described. Other important activities worldwide are summarized. The technical and econ
908 citations
TL;DR: In this article, a review of the state of the art on self rectifying air turbines, which could be used for wave energy conversion, has been presented, and the overall performances of the turbines under irregular wave conditions, which typically occur in the sea, have been evaluated numerically and compared from the viewpoints of their starting and running characteristics.
221 citations
TL;DR: In this paper, a new topology that uses twin unidirectional turbines (which feature a high efficiency spanning a broad range) is proposed, and it is shown that the power output from such a module considerably exceeds existing optimal configurations including those based on a fixed guide vane impulse turbine or a Well's turbine.
104 citations
TL;DR: In this paper, the authors described the state of the art on air turbines, which could be used for wave energy conversion, including Wells type turbines, impulse turbines, radial turbines, cross-flow turbine, and Savonius turbine.
Abstract: This paper describes the present status of the art on air turbines, which could be used for wave energy conversion. The air turbines included in the paper are as follows: Wells type turbines, impulse turbines, radial turbines, cross-flow turbine, and Savonius turbine. The overall performances of the turbines under irregular wave conditions, which typically occur in the sea, have been compared by numerical simulation and sea trial. As a result, under irregular wave conditions it is found that the running and starting characteristics of the impulse type turbines could be superior to those of the Wells turbine. Moreover, as the current challenge on turbine technology, the authors explain a twin-impulse turbine topology for wave energy conversion.
100 citations
TL;DR: In this article, the authors present the formulation of the optimal control problem for WECs in the framework of direct transcription methods, known as spectral and pseudospectral optimal control.
88 citations