DEAP-based energy harvesting using vortex-induced vibrations

Thorben Hoffstadt; Robert Heinze; Tim Wahl; Frank Kameier; Jürgen Maas

doi:10.1117/12.2045077

26 March 2014 DEAP-based energy harvesting using vortex-induced vibrations

Thorben Hoffstadt, Robert Heinze, Tim Wahl, Frank Kameier, Jürgen Maas

Proceedings Volume 9056, Electroactive Polymer Actuators and Devices (EAPAD) 2014; 90561E (2014) https://doi.org/10.1117/12.2045077
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2014, San Diego, California, United States

Abstract

Generators based on dielectric electroactive polymers (DEAP) convert mechanical strain energy into electrical field energy. In order to harvest renewable energy from ambient sources adequate generator setups have to be developed. Thus, in this contribution a DEAP generator is presented which uses periodic vortex induced vibration of a circular cylinder as excitation mechanism, by which e.g. Flow energy of a wind or water current can be converted. For this purpose a novel generator design consisting of a cylinder that is elastically mounted on DEAP material is presented. Since the effect of vortex induced vibrations depends on the stiffness and damping of the utilized generator's eigenmode, a method to adapt both via the electrostatic pressure and energy conversion is proposed. After the validation of the general functionality of the novel generator design, analyses concerning the control of the overall harvester are carried out.

Citation Download Citation

Thorben Hoffstadt, Robert Heinze, Tim Wahl, Frank Kameier, and Jürgen Maas "DEAP-based energy harvesting using vortex-induced vibrations", Proc. SPIE 9056, Electroactive Polymer Actuators and Devices (EAPAD) 2014, 90561E (26 March 2014); https://doi.org/10.1117/12.2045077

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