Dielectric Elastomers (DEs) are incompressible rubber-like solids whose electrical and structural responses are highly nonlinear and strongly coupled. Thanks to their coupled electro-mechanical response, intrinsic lightness, easy-manufacturability and low-cost, DEs are perfectly suited for the development of novel solid-state polymeric energy conversion units with capacitive nature and high-voltage operation, which are more resilient, lightweight, integrated, economic and disposable than traditional generators based on conventional electromagnetic technology. Inflated Circular Diaphragm DE Generators (ICD-DEGs) are a special embodiment of polymeric transducer which can be used to convert pneumatic energy into usable electricity. Potential application of ICD-DEGs is as Power Take-Off (PTO) system for wave energy converters based on the Oscillating Water Column (OWC) principle. This paper presents a reduced, yet accurate, dynamic model for ICD-DEGs which features one degree of freedom and which accounts for DE visco-elasticity. The model is computationally simple and can be easily integrated into existing wave-to-wire models of OWCs to be used for fast analysis and real-time applications. For demonstration purposes, integration of the considered ICD-DEG model with a lumped-parameter hydrodynamic model of a realistic OWC is also presented along with a simulation case study.
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ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
September 16–18, 2013
Snowbird, Utah, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-5603-1
PROCEEDINGS PAPER
Dynamic Model of Dielectric Elastomer Diaphragm Generators for Oscillating Water Column Wave Energy Converters
Gastone Pietro Rosati Papini
,
Gastone Pietro Rosati Papini
Scuola Superiore Sant’Anna, Pisa, Italy
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Rocco Vertechy
,
Rocco Vertechy
Scuola Superiore Sant’Anna, Pisa, Italy
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Marco Fontana
Marco Fontana
Scuola Superiore Sant’Anna, Pisa, Italy
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Gastone Pietro Rosati Papini
Scuola Superiore Sant’Anna, Pisa, Italy
Rocco Vertechy
Scuola Superiore Sant’Anna, Pisa, Italy
Marco Fontana
Scuola Superiore Sant’Anna, Pisa, Italy
Paper No:
SMASIS2013-3255, V001T03A038; 9 pages
Published Online:
February 20, 2014
Citation
Rosati Papini, GP, Vertechy, R, & Fontana, M. "Dynamic Model of Dielectric Elastomer Diaphragm Generators for Oscillating Water Column Wave Energy Converters." Proceedings of the ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems; Integrated System Design and Implementation. Snowbird, Utah, USA. September 16–18, 2013. V001T03A038. ASME. https://doi.org/10.1115/SMASIS2013-3255
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