Nonlinear Hybrid Piezoelectric and Electromagnetic Energy Harvesting Driven by Colored Excitation

Xiaoya Zhou, Shiqiao Gao, Haipeng Liu and Lei Jin
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Xiaoya Zhou: State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
Shiqiao Gao: State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
Haipeng Liu: State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
Lei Jin: State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

Energies, 2018, vol. 11, issue 3, 1-23

Abstract: It is well known that when excited by a stochastic base acceleration, the power absorbed by a nonlinear Duffing-type piezoelectric (PE) or electromagnetic (EM) energy harvester might not be increased effectively compared to a linear one. When intentionally introducing nonlinear magnetic forces into a doubly-clamped hybrid PE and EM energy harvester subjected to narrow-band (colored) excitation however, the power output could be improved to a much higher value. Also, in comparison with the typical nonlinear PE or EM generator, the influence of load and excitation parameters on the performance of a nonlinear hybrid energy harvester under colored excitation has been proven rather different as well. These results are derived analytically by solving the Fokker-Planck (FP) equation, and numerically by Monte Carlo (MC) simulations for validation. Besides, for a nonlinear hybrid configuration excited by colored noise approaching white Gaussian excitation, theoretical output characteristics are discussed and compared with results from a reported theory for white Gaussian excited case, which again verifies the feasibility of the theoretical analysis.

Keywords: hybrid energy harvester; nonlinearity; colored excitation; output characteristics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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