High power density spring-assisted nonlinear electromagnetic vibration energy harvester for low base-accelerations

Aldawood, Ghufran; Nguyen, Hieu; Bardaweel, Hamzeh

doi:10.1016/j.apenergy.2019.113546

Cited by 87 publications

(62 citation statements)

References 41 publications

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“…Some examples of energy conversion mechanisms are piezoelectric, electromagnetic, triboelectric, and electrostatic . Among these mechanisms, electromagnetic generators (EMG) are the most popular for high power generation capability in vibration energy harvesting . Nowadays, triboelectric nanogenerators (TENGs) have become one of the most promising mechanisms for vibration energy harvesting because of their ability to generate electricity from irregular and extremely low input excitations .…”

Section: Introductionmentioning

confidence: 99%

“…[28][29][30][31] Among these mechanisms, electromagnetic generators (EMG) are the most popular for high power generation capability in vibration energy harvesting. [32][33][34] Nowadays, triboelectric nanogenerators (TENGs) have become one of the most promising mechanisms for vibration energy harvesting because of their ability to generate electricity from irregular and extremely The fast growth of smart electronics requires novel solutions to power them sustainably. Portable power sources capable of harvesting biomechanical energy are a promising modern approach to reduce battery dependency.…”

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confidence: 99%

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Biomechanical Energy‐Driven Hybridized Generator as a Universal Portable Power Source for Smart/Wearable Electronics

Rahman

Rana

Salauddin

et al. 2020

Advanced Energy Materials

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The fast growth of smart electronics requires novel solutions to power them sustainably. Portable power sources capable of harvesting biomechanical energy are a promising modern approach to reduce battery dependency. Herein, a novel elastic impact‐based nonresonant hybridized generator (EINR‐HG) is reported to effectively harvest biomechanical energy from diverse human activities outdoors. Through the rational integration of a nonlinear electromagnetic generator with two contact‐mode triboelectric nanogenerators, the proposed EINR‐HG generates hybrid electrical output simultaneously under the same mechanical excitations. By introducing a flux‐concentrator with a nanowire‐nanofiber surface modification, significant improvement in the energy harvesting efficiency of the EINR‐HG is achieved. After optimizing using simulations and vibration tests, the as‐fabricated EINR‐HG delivers an outstanding normalized power density of 3.13 mW cm−3 g−2 across a matching resistance of 1.5 kΩ at 6 Hz under 1 g acceleration. Under human motion testing, the EINR‐HG generates an optimal output power of 131.4 mW with horizontal handshaking. With a customized power management circuit, the EINR‐HG serves as a universal power source that successfully drives commercial smart electronics, including smart bands and smartphones. This work shows the massive potential of biomechanical energy‐driven hybridized generators for powering personal electronics and portable healthcare monitoring devices.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Biomechanical Energy‐Driven Hybridized Generator as a Universal Portable Power Source for Smart/Wearable Electronics

Rahman

Rana

Salauddin

et al. 2020

Advanced Energy Materials

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“…A portion of the container is wrapped in a multilayer coil around its outer surface [25]. Twenty-one design congurations were already tested using: (i) circular or rectangular containers [66,69]; (ii) cylindrical, ring or block magnets [7072]; (iii) number of levitating magnets up to six [7]; (iv) number of coil windings up to ve [73]; (v) planar or helicoidal coils [74,75]; (vi) levitating magnets with and without guidance systems [6,57]; (vii) levitating magnets in stack arrangements with or without spacers [61,64], and experiencing repulsive or attractive forces [76,77]; (viii) end extremities of containers with xed permanent magnets or, dierently, with springs or bumpers [78,79]; (ix) nonlinear FR4 planar spring anchored to the casing and glued to the top magnet, guiding its motion (use of dual-mass) [80]. According to the number of coils and permanent magnets, these twenty-one designs can be categorized as: (i) single coil and single levitating magnet: 3 congurations (Fig.…”

Section: Magnetic Levitation Architecturesmentioning

confidence: 99%

Electromagnetic energy harvesting using magnetic levitation architectures: A review

et al. 2020

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Motion-driven electromagnetic energy harvesters have the ability to provide low-cost and customizable electric powering. They are a well-suited technological solution to autonomously supply a broad range of high-sophisticated devices. This paper presents a detailed review focused on major breakthroughs in the scope of electromagnetic energy harvesting using magnetic levitation architectures. A rigorous analysis of twenty-one design congurations was made to compare their geometric and constructive parameters, optimization methodologies and energy harvesting performances. This review also explores the most relevant models (analytical, semi-analytical, empirical and nite element method) already developed to make intelligible the physical phenomena of their transduction mechanisms. The most relevant approaches to model each physical phenomenon of these transduction mechanisms are highlighted in this paper. Very good agreements were found between experimental and simulation tests with deviations lower than 15%. Moreover, the external motion excitations and electric energy harvesting outputs were also comprehensively compared and critically discussed. Electric power densities up to 8 mW/cm 3 (8 kW/m 3 ) have already been achieved; for resistive loads, the maximum voltage and current were 43.4 V and 150 mA, respectively, for volumes up to 235 cm 3 . Results highlight the potential of these harvesters to convert mechanical energy into electric energy both for large-scale and small-scale applications. Moreover, this paper proposes future research directions towards eciency maximization and minimization of energy production costs.

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“…The output voltage of the piezoelectric Micromachines 2020, 11, 80 2 of 14 vibration energy harvester is higher but the output current is smaller and its output impedance is capacitive [10][11][12]. The output voltage of electromagnetic vibration energy harvester is lower but the output current is larger and its output impedance is inductive [13][14][15][16]. The output power and conversion efficiency of the energy harvester with a single electromechanical conversion mechanism is low and the operating frequency band and load range are narrow [17,18].…”

Section: Introductionmentioning

confidence: 99%

A Piezo-Electromagnetic Coupling Multi-Directional Vibration Energy Harvester Based on Frequency Up-Conversion Technique

et al. 2020

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Harvesting vibration energy to power wearable devices has become a hot research topic, while the output power and conversion efficiency of a vibration energy harvester with a single electromechanical conversion mechanism is low and the working frequency band and load range are narrow. In this paper, a new structure of piezoelectric electromagnetic coupling up-conversion multi-directional vibration energy harvester is proposed. Four piezoelectric electromagnetic coupling cantilever beams are installed on the axis of the base along the circumferential direction. Piezoelectric plates are set on the surface of each cantilever beam to harvest energy. The permanent magnet on the beam is placed on the free end of the cantilever beam as a mass block. Four coils for collecting energy are arranged on the base under the permanent magnets on the cantilever beams. A bearing is installed on the central shaft of the base and a rotating mass block is arranged on the outer ring of the bearing. Four permanent magnets are arranged on the rotating mass block and their positions correspond to the permanent magnets on the cantilever beams. The piezoelectric cantilever is induced to vibrate at its natural frequency by the interaction between the magnet on cantilever and the magnets on the rotating mass block. It can collect the nonlinear impact vibration energy of low-frequency motion to meet the energy harvesting of human motion.

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High power density spring-assisted nonlinear electromagnetic vibration energy harvester for low base-accelerations

Cited by 87 publications

References 41 publications

Biomechanical Energy‐Driven Hybridized Generator as a Universal Portable Power Source for Smart/Wearable Electronics

Biomechanical Energy‐Driven Hybridized Generator as a Universal Portable Power Source for Smart/Wearable Electronics

Electromagnetic energy harvesting using magnetic levitation architectures: A review

A Piezo-Electromagnetic Coupling Multi-Directional Vibration Energy Harvester Based on Frequency Up-Conversion Technique

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