An analysis of the coupling effect for a hybrid piezoelectric and electromagnetic energy harvester

Li, Ping; Gao, Shiqiao; Niu, Shaohua; Liu, Haipeng; Cai, Huatong

doi:10.1088/0964-1726/23/6/065016

Cited by 39 publications

(11 citation statements)

References 37 publications

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“…Different kinetic energy conversion methods in combination are able to compensate each other, thus boosting the output power. Various types of kinetic (including fluidic) hybridization involving two energy conversion effects have been developed, including piezoelectric–electromagnetic, electrostrictive–electrets, piezoelectric–triboelectric, electromagnetic–triboelectric, piezoelectric–electrostatic, triboelectric–electrostatic, and piezoelectric–electrostrictive . Hybridization involving three kinetic energy conversion effects, piezoelectric–electromagnetic–triboelectric, has also been reported.…”

Section: Hybridization Of Energy Harvestersmentioning

confidence: 99%

Energy Harvesting Research: The Road from Single Source to Multisource

2018

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Energy harvesting technology may be considered an ultimate solution to replace batteries and provide a long-term power supply for wireless sensor networks. Looking back into its research history, individual energy harvesters for the conversion of single energy sources into electricity are developed first, followed by hybrid counterparts designed for use with multiple energy sources. Very recently, the concept of a truly multisource energy harvester built from only a single piece of material as the energy conversion component is proposed. This review, from the aspect of materials and device configurations, explains in detail a wide scope to give an overview of energy harvesting research. It covers single-source devices including solar, thermal, kinetic and other types of energy harvesters, hybrid energy harvesting configurations for both single and multiple energy sources and single material, and multisource energy harvesters. It also includes the energy conversion principles of photovoltaic, electromagnetic, piezoelectric, triboelectric, electrostatic, electrostrictive, thermoelectric, pyroelectric, magnetostrictive, and dielectric devices. This is one of the most comprehensive reviews conducted to date, focusing on the entire energy harvesting research scene and providing a guide to seeking deeper and more specific research references and resources from every corner of the scientific community.

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Section: Hybridization Of Energy Harvestersmentioning

confidence: 99%

Energy Harvesting Research: The Road from Single Source to Multisource

2018

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“…According to Kirchhoff's law, the electrical equations are established as follows: Here, Ma represents the external exciting force in the mechanical domain and the resistance represents the damping D, the capacitance represents the elastic potential energy, which is expressed by 1/K e of the elastic coefficient, the inductance represents the kinetic energy, which is expressed by the magnet mass M. The current of the primary circuit is the vibration velocity u of the mass relative to the base. The equivalent circuit of piezoelectric element is coupled to mechanical domain through transformer, while the equivalent circuit of electromagnetic element is coupled to the mechanical domain through a gyrator [18]. The α represents the piezoelectric force-voltage factor and β the electromagnetic force-current factor.…”

Section: Principle and Model Analysismentioning

confidence: 99%

“…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]. Because of the resonance type, a linear vibration energy harvester has higher output power only near its natural resonance frequency point [19].…”

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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“…V is the velocity amplitude of magnets, and Ω = ω/ω h1 is the non-dimensional frequency. The equivalent circuit of the n-EVEH is shown in Figure 2, where R c is the resistance of coils, R l is the load resistance, and L C is the inductance of coils, which can be neglected in the low vibration frequency (lower than 1 kHz) [36]. The load voltage of the electromagnetic vibration energy harvester can be written as…”

Section: The Device Structure and Analytical Modelmentioning

confidence: 99%

A Nonlinear Broadband Electromagnetic Vibration Energy Harvester Based on Double-Clamped Beam

Wen

et al. 2019

Energies

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The performance of vibration energy harvesters is usually restricted by their frequency bandwidth. The double-clamped beam with strong natural nonlinearity is a simple way that can effectively expand the frequency bandwidth of the vibration energy harvester. In this article, a nonlinear electromagnetic vibration energy harvester with monostable double-clamped beam was proposed. A systematic analysis was conducted and a distributed parameter analytical model was established. On this basis, the output performance was estimated by the analytical model. It was found that the nonlinearity of the double-clamped beam had little influence on the maximum output, while broadening the frequency bandwidth. In addition, the resonant frequency, the frequency bandwidth, and the maximum output all increased following the increase of excitation level. Furthermore, the resonant frequency varies with the load changes, due to the electromagnetic damping, so the maximum output power should be gained at its optimum load and frequency. To experimentally verify the established analytical model, an electromagnetic vibration energy harvester demonstrator was built. The prediction by the analytical model was confirmed by the experiment. As a result, the open-circuit voltage, the average power and the frequency bandwidth of the electromagnetic vibration energy harvester can reach up to 3.6 V, 1.78 mW, and 11 Hz, respectively, under only 1 G acceleration, which shows a prospect for the application of the electromagnetic vibration energy harvester based on a double-clamped beam.

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An analysis of the coupling effect for a hybrid piezoelectric and electromagnetic energy harvester

Cited by 39 publications

References 37 publications

Energy Harvesting Research: The Road from Single Source to Multisource

Energy Harvesting Research: The Road from Single Source to Multisource

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

A Nonlinear Broadband Electromagnetic Vibration Energy Harvester Based on Double-Clamped Beam

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