Segmented impact-type piezoelectric energy harvester for self-start impedance matching circuit

Jung, Hyun Jun; Lee, Soo-Bum; Jeong, Sinwoo; Yoo, Hong Hee

doi:10.1088/1361-665x/aacdc6

Cited by 8 publications

(3 citation statements)

References 31 publications

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“…The resonant frequency-based cantilever design of a piezoelectric vibration energy harvester gives better output at its resonant frequency, compared to the impact type device [17]. Hence, methods to tune its natural frequency to different values matching with the ambient frequency open up a wide range of applications.…”

Section: Design Of a Novel Tunable Piezoelectric Vibration Energy Harmentioning

confidence: 99%

A Novel Design and Performance Results of An Electrically Tunable Piezoelectric Vibration Energy Harvester (TPVEH)

Raghavan

Gupta

2020

J. Compos. Sci.

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The need for energy harvesters for various applications, including structural health monitoring (SHM) in remote and inaccessible areas, is well established. Energy harvesters can utilize the ambient vibration of the body on which they are mounted to generate energy, thus eliminating the need for an external source of power. One such type of harvester is designed using piezoelectric materials and using a cantilever type set-up. However, the challenge associated with cantilever-based Piezoelectric Vibration Energy Harvesters (PVEH) is that its output power reduces when the ambient vibration frequency deviates from the resonant frequency of the harvester. This calls for a mechanism to tune its resonant frequency to match with the ambient frequency. This article presents an innovative design of an electrically tunable PVEH. The PVEH is integrated with an Ionic Polymer Metal Composite (IPMC) as an actuator that loads the cantilever beam, changing the stiffness of the beam. IPMC utilizes low power, and the authors demonstrate in this paper that a net gain of power can be achieved by this novel design. For the configuration used, it is experimentally proven that a frequency shift from 5.9 Hz to 8 Hz is achieved with three actuation values. Typical power output from the harvester is 52.03 µW when the power spent on actuation is only 0.765 µW. On-going modeling of this system using simulation software is expected to lead to further optimization and prototyping of design.

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Section: Design Of a Novel Tunable Piezoelectric Vibration Energy Harmentioning

confidence: 99%

A Novel Design and Performance Results of An Electrically Tunable Piezoelectric Vibration Energy Harvester (TPVEH)

Raghavan

Gupta

2020

J. Compos. Sci.

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“…The regular contact between the free end of the piezoelectric vibrator and the rotor blades is utilized to drive the vibrational deformation of the piezoelectric vibrator and output electrical energy. Jung et al [20,21] suggested a breeze-impact PEH. Vibration is produced when the piezoelectric cantilever beam collides with the wind turbine.…”

Section: Introductionmentioning

confidence: 99%

Pendulum type magnetically coupled rotary piezoelectric energy harvester

Liu,

Yan,

Zhong

et al. 2024

Smart Mater. Struct.

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This research proposes a rotary motion-based non-contact pendulum piezoelectric energy harvester (P-PEH). The working region of the piezoelectric vibrator can be maintained in a magnetically coupled system at all times by means of a motion conversion mechanism. The combination of the motion conversion mechanism and the magnetic coupling system not only reduces the loss of the piezoelectric material, but also improves the output performance of the piezoelectric vibrator. The paper investigates the effects of the excitation distance L, the radius of the base circle R, and the number of excitation magnets N on the output performance of the P-PEH. When the input speed of 600 rpm, L = 10 mm, R = 21 mm, and N = 1, the peak-to-peak voltage (Vpp ) is 58.75 V. At this parameter, the output power of the device with an external 20 kΩ load is 0.0187 W. The viability of P-PEH was finally demonstrated through several application testing. P-PEH can easily light up 63 LEDs while its output energy can keep the temperature and humidity sensor in use. In summary, P-PEH can effectively collect external rotational energy for power storage and supply, and supply electricity to wireless sensor networks and microelectronic devices with further studies.

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“…There are three typical methods to develop numerical models for PE harvesters: the finite element method (FEM) [29,30], analytical methods [1,[31][32][33], and the classical Ritz method (CRM) [1,[34][35][36][37][38][39]. Each method has its advantages and disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Design Scalability Study of the Γ-Shaped Piezoelectric Harvester Based on Generalized Classical Ritz Method and Optimization

2021

Self Cite

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This paper studies the design scalability of a -shaped piezoelectric energy harvester (EH) using the generalized classical Ritz method (GCRM) and differential evolution algorithm. The generalized classical Ritz method (GCRM) is the advanced version of the classical Ritz method (CRM) that can handle a multibody system by assembling its equations of motion interconnected by the constraint equations. In this study, the GCRM is extended for analysis of the piezoelectric energy harvesters with material and/or orientation discontinuity between members. The electromechanical equations of motion are derived for the PE harvester using GCRM, and the accuracy of the numerical simulation is experimentally validated by comparing frequency response functions for voltage and power output. Then the GCRM is used in the power maximization design study that considers four different total masses—15 g, 30 g, 45 g, 60 g—to understand design scalability. The optimized EH has the maximum normalized power density of 23.1 × 103 kg·s·m−3 which is the highest among the reviewed PE harvesters. We discuss how the design parameters need to be determined at different harvester scales.

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Segmented impact-type piezoelectric energy harvester for self-start impedance matching circuit

Cited by 8 publications

References 31 publications

A Novel Design and Performance Results of An Electrically Tunable Piezoelectric Vibration Energy Harvester (TPVEH)

A Novel Design and Performance Results of An Electrically Tunable Piezoelectric Vibration Energy Harvester (TPVEH)

Pendulum type magnetically coupled rotary piezoelectric energy harvester

Design Scalability Study of the Γ-Shaped Piezoelectric Harvester Based on Generalized Classical Ritz Method and Optimization

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