Theoretical analysis and numerical study on a flexible piezoelectric wave energy converter
by Chunrong Liu; Wenyu Yang
International Journal of Hydromechatronics (IJHM), Vol. 5, No. 4, 2022

Abstract: The mathematical model of a flexible piezoelectric wave energy converter (FPWEC) was presented. The interaction of the flexible membrane with waves was simulated numerically and the electric circuit was solved analytically. The behaviour of the flexible membrane under waves depends on a dimensionless number E_τ / T_m0. For smaller E_τ / T_m0, the strain variation amplitude of the membrane is higher and the variation frequency is two times of the wave frequency. For larger E_τ / T_m0, the variation frequency of the strain of the membrane can reach eight times of the wave frequency due to the nonlinear interaction of the waves and membrane. The order analysis method was used to estimate the output power of the FPWEC. As the ratio of the size of inductor D_I to the width of the membrane B_m reaches 0.025, the output power of the FPWEC can reach MW lever.

Online publication date: Fri, 18-Nov-2022

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