Опубликована: Янв. 1, 2024
Язык: Английский
Applied Physics Letters, Год журнала: 2025, Номер 126(7)
Опубликована: Фев. 17, 2025
In this Letter, the Venturi effect is introduced to change vibration behaviors of a downwind bluff body and piezoelectric wind-induced energy harvester using (VE-PWVEH) reported offer an alternative solution enable high-performance PWVEH. Also, power generation characteristics were readily adjusted by flow channel forming without modifying PWVEH structure. So, VE-PWVEH could possess both great power-generating capability at low wind speed strong robustness high speed. The results demonstrated that output voltage cut-in affected attack angle two rectangular plates used for stimulating constricted channel. There was optimal 60° where maximum peak increased 621% reduced 171% compared with effect. Besides, it achieve 0.863 mW illuminate about 120 blue LEDs in series. introduction provides simple viable method field disturbance tune performance PWVEHs.
Язык: Английский
Процитировано
3
Mechanical Systems and Signal Processing, Год журнала: 2025, Номер 226, С. 112354 - 112354
Опубликована: Янв. 16, 2025
Язык: Английский
Процитировано
2
International Journal of Mechanical Sciences, Год журнала: 2024, Номер 281, С. 109681 - 109681
Опубликована: Авг. 26, 2024
Язык: Английский
Процитировано
9
Energy Conversion and Management, Год журнала: 2024, Номер 319, С. 118948 - 118948
Опубликована: Авг. 23, 2024
Язык: Английский
Процитировано
6
Applied Physics Letters, Год журнала: 2024, Номер 125(20)
Опубликована: Ноя. 11, 2024
A conventional vortex-induced vibration (VIV)-based energy harvester is typically restricted to capturing wind from a very limited range of directions, making it inefficient in varying conditions. This Letter proposes tri-section beam configuration for VIV-based piezoelectric enable harnessing incident angle with different modes being triggered. The finite element analysis investigates the harvester's mode shapes and natural frequencies. tunnel experiment conducted comparative study output performance harvesters straight beams. findings show that proposed can efficiently capture much wider angles, as opposed specific directions its counterpart beam. also widen lock-in speed higher bending triggered achieve optimal power 1.388 mW when works second at frequency, superior (0.386 mW) only work first mode. sheds light on developing multi-directional multi-modal adapted conditions environments.
Язык: Английский
Процитировано
5
Energy, Год журнала: 2025, Номер 320, С. 135135 - 135135
Опубликована: Фев. 26, 2025
Язык: Английский
Процитировано
0
International Journal of Mechanical Sciences, Год журнала: 2025, Номер unknown, С. 110118 - 110118
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
0
Applied Physics Letters, Год журнала: 2025, Номер 126(16)
Опубликована: Апрель 21, 2025
In this Letter, a Clivia-like piezoelectric wind energy harvester (CL-PWEH) using an overlapping multi-sheet structure is presented to enhance the robustness of wind-induced vibration harvesters at unpredictable scenarios. The CL-PWEH was characterized by vibrators independent main beam, Clivia-leaf-style vibrators, and rigid-flexible contact plucking. feasibility proposed demonstrated through theoretical analysis, fabrication, speed responses experiments. results showed that length thickness flexible sheets had strong influence on mode, output voltage, effective bandwidth, cut-in speed. voltage enhanced with rising ratio, bandwidth decreased increase in ratio. addition, maximum power 5.82 mW achieved for α = 1.3, β 4.5 optimum load resistance 300 kΩ. Meanwhile, application as supply illustrated prototype could light up 200 blue LEDs series.
Язык: Английский
Процитировано
0
Journal of Vibration Engineering & Technologies, Год журнала: 2025, Номер 13(5)
Опубликована: Май 7, 2025
Язык: Английский
Процитировано
0
Mechanical Systems and Signal Processing, Год журнала: 2025, Номер 234, С. 112835 - 112835
Опубликована: Май 12, 2025
Язык: Английский
Процитировано
0