Numerical Assessment of a One-Mass Spring-Based Electromagnetic Energy Harvester on a Vibrating Object

• Autorzy: Chiu M.-C. , Chang Y.-C. , Yeh L.-J. , Chung C.-H.

Identyfikatory

DOI

10.1515/aoa-2016-0012

• Języki publikacji: EN

Abstrakty

EN

The paper is an exploration of the optimal design parameters of a space-constrained electromagnetic vibration-based generator. An electromagnetic energy harvester is composed of a coiled polyoxymethylen circular shell, a cylindrical NdFeB magnet, and a pair of helical springs. The magnet is vertically confined between the helical springs that serve as a vibrator. The electrical power connected to the coil is actuated when the energy harvester is vibrated by an external force causing the vibrator to periodically move through the coil. The primary factors of the electrical power generated from the energy harvester include a magnet, a spring, a coil, an excited frequency, an excited amplitude, and a design space. In order to obtain maximal electrical power during the excitation period, it is necessary to set the system’s natural frequency equal to the external forcing frequency. There are ten design factors of the energy harvester including the magnet diameter (D_m), the magnet height (H_m), the system damping ratio (ζ_sys), the spring diameter (D_s), the diameter of the spring wire (d_s), the spring length (ℓ_s), the pitch of the spring (p_s), the spring’s number of revolutions (N_s), the coil diameter (D_c), the diameter of the coil wire (d_c), and the coil’s number of revolutions (N_c). Because of the mutual effects of the above factors, searching for the appropriate design parameters within a constrained space is complicated. Concerning their geometric allocation, the above ten design parameters are reduced to four (D_m, H_m, ζ_sys, and N_c). In order to search for optimal electrical power, the objective function of the electrical power is maximized by adjusting the four design parameters (D_m, H_m, ζ_sys, and N_c) via the simulated annealing method. Consequently, the optimal design parameters of D_m, H_m, ζ_sys, and N_c that produce maximum electrical power for an electromagnetic energy harvester are found.

Słowa kluczowe

EN

spring; harvester; generator; permanent magnet; simulated annealing; optimization; buckling; fatigue

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2016
• Tom: Vol. 41, No. 1
• Strony: 119--131
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr., fot.

Twórcy

autor

Chiu M.-C.

• Department of Mechanical and Automation Engineering, Chung Chou University of Science and Technology, No. 6, Lane 2, Sec. 3, Shanchiao Rd., Yuanlin, Changhua 51003, Taiwan, ROC

autor

Chang Y.-C.

• Department of Mechanical Engineering, Tatung University, No. 40, Sec. 3, Zhongshan N. Rd., Taipei 104, Taiwan, ROC

autor

Yeh L.-J.

• Department of Mechanical Engineering, Tatung University, No. 40, Sec. 3, Zhongshan N. Rd., Taipei 104, Taiwan, ROC

autor

Chung C.-H.

• Department of Mechanical Engineering, Tatung University, No. 40, Sec. 3, Zhongshan N. Rd., Taipei 104, Taiwan, ROC

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.