Force Transmission Interfaces for Pressure Fluctuation Energy Harvesters

Aranda, Jesus Javier Lechuga; Bader, Sebastian; Oelmann, Bengt

doi:10.1109/iecon.2018.8591492

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…According to their calculation method, the output density of the present APEH can reach to [34] and [21] achieve higher output power, they exhibit lower power density compared to the present APEH due to larger volumes of piezoelectric materials. Aranda et al [35] designed a PEH with two distinct fluid-mechanical interfaces and it can work under pressure of up to 22 MPa, but the output power and power density are significantly insufficient. In summary, the disk structure is more conducive to achieving higher power density compared to the stacked structure, provided that the piezoelectric material remains undamaged.…”

Section: Comparison With the Existing Pehsmentioning

confidence: 99%

Performance study of an array piezoelectric energy harvester for pressure pulsation vibration energy in water hydraulic system

Xian,

Xu,

Chen

et al. 2024

J. Phys. D: Appl. Phys.

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In this paper, an array piezoelectric energy harvester (APEH) is designed for energy collection from water hydraulic system. The APEH is arranged in a spatial axial array, exhibiting excellent insulation and waterproof properties. The effects of connection modes and pressure pulsation parameters on the output performance of APEH are investigated through theoretical analysis, simulation and experiment. The results show that the output electric energy of each piezoelectric disk is consistent, and it is generated by the deformation caused by pressure pulsation. The connection modes show significant differences at different resistances. Series and parallel connections have the same maximum output power. The parallel connection has a smaller optimal resistance and has advantages in practical engineering applications. Both the pressure amplitude and the pulsation frequency affect the output voltage and power and increasing the pulsation frequency leads to the decrease of optimal resistance. By employing parallel connection, APEH can achieve higher output at lower load resistances. When the resistance is 12 kΩ, the average power and power density are reach as 997.63 μW and 2.54 μW mm−3, respectively. In summary, the APEH proposed in this paper offering a viable solution for energy recovery in water hydraulic systems and the sustainable power supply of the sensors, along with providing relevant theoretical references and practical schemes.

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Section: Comparison With the Existing Pehsmentioning

confidence: 99%

Performance study of an array piezoelectric energy harvester for pressure pulsation vibration energy in water hydraulic system

Xian,

Xu,

Chen

et al. 2024

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

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Self-Powered Wireless Sensor Using a Pressure Fluctuation Energy Harvester

Aranda

Bader

Oelmann

2021

Sensors

Self Cite

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Condition monitoring devices in hydraulic systems that use batteries or require wired infrastructure have drawbacks that affect their installation, maintenance costs, and deployment flexibility. Energy harvesting technologies can serve as an alternative power supply for system loads, eliminating batteries and wiring requirements. Despite the interest in pressure fluctuation energy harvesters, few studies consider end-to-end implementations, especially for cases with low-amplitude pressure fluctuations. This generates a research gap regarding the practical amount of energy available to the load under these conditions, as well as interface circuit requirements and techniques for efficient energy conversion. In this paper, we present a self-powered sensor that integrates an energy harvester and a wireless sensing system. The energy harvester converts pressure fluctuations in hydraulic systems into electrical energy using an acoustic resonator, a piezoelectric stack, and an interface circuit. The prototype wireless sensor consists of an industrial pressure sensor and a low-power Bluetooth System-on-chip that samples and wirelessly transmits pressure data. We present a subsystem analysis and a full system implementation that considers hydraulic systems with pressure fluctuation amplitudes of less than 1 bar and frequencies of less than 300 Hz. The study examines the frequency response of the energy harvester, the performance of the interface circuit, and the advantages of using an active power improvement unit adapted for piezoelectric stacks. We show that the interface circuit used improves the performance of the energy harvester compared to previous similar studies, showing more power generation compared to the standard interface. Experimental measurements show that the self-powered sensor system can start up by harvesting energy from pressure fluctuations with amplitudes starting at 0.2 bar at 200 Hz. It can also sample and transmit sensor data at a rate of 100 Hz at 0.7 bar at 200 Hz. The system is implemented with off-the-shelf circuits.

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Force Transmission Interfaces for Pressure Fluctuation Energy Harvesters

Cited by 2 publications

References 7 publications

Performance study of an array piezoelectric energy harvester for pressure pulsation vibration energy in water hydraulic system

Performance study of an array piezoelectric energy harvester for pressure pulsation vibration energy in water hydraulic system

Self-Powered Wireless Sensor Using a Pressure Fluctuation Energy Harvester

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