Investigation on optimization the performance of a wave energy converter using Dielectric electro-active polymers

This paper investigate the performance of a wave energy converter using Dielectric electro active polymer (DEAP). Firstly, the model of conventional DEAP generator is presented and validated by a simple test rig. Then, an antagonistic DEAP generator so-called energy capture unit (ECU) consists of two DEAP in antagonistic connection mode is analyzed and modeled. In order to increase the output energy, a new design of WEC is then developed with array of ECU. Moreover, the hydrodynamic forces are calculated under regular wave conditions by using the linear potential wave theory. Then, a complete analytical model of the proposed WECs using multiple ECU under hydrodynamic behavior is then obtained to investigate the performance of energy conversion. Finally, stretch ratio known as an important factor to efficiency and output power is investigated under the influence of the supplementary mass. The resonance behavior of the WEC with a typical wave frequency can also be tuned by controlling the inertia supplementary to increase the degree of utilization of the device. The efficiency of wave energy converter can reach 20% thanks to additional mass.