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

Lu, Zhuang; Wen, Quan; He, Xianming; Zhang, Wen

doi:10.3390/en12142710

Cited by 10 publications

(6 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A monostable double-clamped beam nonlinear electromagnetic vibration energy harvester was suggested in [ 50 ], as shown in Figure 3 . A distributed parameter analytical model was created to assess output performance.…”

Section: Moving Coil Vs Moving Magnetmentioning

confidence: 99%

Electromagnetic Vibrational Energy Harvesters: A Review

Muscat

Bhattacharya

Zhu

2022

Sensors

View full text Add to dashboard Cite

As industries need more real-time monitoring and interconnected systems, the demand for wireless sensors expands. Vibrational energy harvesters are a potential solution for powering these sensors, as vibrations commonly exist where monitoring occurs. Developments in low-power circuitry have also led to the feasibility of these types of harvesters. Electromagnetic harvesters are a standout among various types of vibrational harvesters due to their ability to capture kinetic energy in a low-frequency range. This leads to these devices being more applicable in real-world applications where ambient vibrations are typical of having low frequencies. Hence, extensive research has been undertaken to make electromagnetic harvesters more efficient and compact. This review study aims to examine recent literature that has made advancements and demonstrated the full potential of such devices.

show abstract

Section: Moving Coil Vs Moving Magnetmentioning

confidence: 99%

Electromagnetic Vibrational Energy Harvesters: A Review

Muscat

Bhattacharya

Zhu

2022

Sensors

View full text Add to dashboard Cite

show abstract

“…Substituting Equations (11) and (12) into Equation 7, then equating terms of the same powers of ε, the following sets of equations are obtained…”

Section: Of 19mentioning

confidence: 99%

“…Employed beams are used in cantilevered or doubly clamped boundary conditions. In electromagnetic and electrostatic harvesters, the beam plays the role of a spring, which suspends an electro or permanent magnet [11] or the electrodes of a capacitor [12], respectively. In other words, in a piezoelectric harvester the beam also performs as a base for the piezoelectric material, generating tension and compression in the piezoelectric material when bended [13].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of an Electromagnetically Coupled Piezoelectric Energy Scavenger

2020

View full text Add to dashboard Cite

The deliberate introduction of nonlinearities is widely used as an effective technique for the bandwidth broadening of conventional linear energy harvesting devices. This approach not only results in a more uniform behavior of the output power within a wider frequency band through bending the resonance response, but also contributes to energy harvesting from low-frequency excitations by activation of superharmonic resonances. This article investigates the nonlinear dynamics of a monostable piezoelectric harvester under a self-powered electromagnetic actuation. To this end, the governing nonlinear partial differential equations of the proposed harvester are order-reduced and solved by means of the perturbation method of multiple scales. The results indicate that, according to the excitation amplitude and load resistance, different responses can be distinguished at the primary resonance. The system behavior may involve the traditional bending of response curves, Hopf bifurcations, and instability regions. Furthermore, an order-two superharmonic resonance is observed, which is activated at lower excitations in comparison to order-three conventional resonances of the Duffing-type resonator. This secondary resonance makes it possible to extract considerable amounts of power at fractions of natural frequency, which is very beneficial in micro-electro-mechanical systems (MEMS)-based harvesters with generally high resonance frequencies. The extracted power in both primary and superharmonic resonances are analytically calculated, then verified by a numerical solution where a good agreement is observed between the results.

show abstract

“…In addition to magnetic spring structure, a double-clamped beam structure with strong natural nonlinearity is also an effective method to broaden the frequency bandwidth. Lu et al [ 43 ] proposed a nonlinear electromagnetic vibration energy harvester with a monostable double-clamp beam, and the average power and frequency bandwidth of the harvester reached 1.78 mW and 11 Hz, respectively, at 1 g acceleration.…”

Section: Introductionmentioning

confidence: 99%

A Magnetic-Coupled Nonlinear Electromagnetic Generator with Both Wideband and High-Power Performance

Huang

Feng

et al. 2021

Micromachines

View full text Add to dashboard Cite

This paper proposed a high-performance magnetic-coupled nonlinear electromagnetic generator (MNL-EMG). A high-permeability iron core is incorporated to the coil. The strong coupling between the iron core and the vibrating magnets lead to significantly improved output power and a broadened operating bandwidth. The magnetic force of the iron core to the permanent magnets and the magnetic flux density inside the iron core are simulated, and the dimension parameters of the MNL-EMG are optimized. Under acceleration of 1.5 g, the MNL-EMG can maintain high output performance in a wide frequency range of 17~30 Hz, which is 4.3 times wider than that of linear electromagnetic generator (EMG) without an iron core. The maximum output power of MNL-EMG reaches 174 mW under the optimal load of 35 Ω, which is higher than those of most vibration generators with frequency less than 30 Hz. The maximum 360 parallel-connected LEDs were successfully lit by the prototype. Moreover, the prototype has an excellent charging performance such that a 1.2 V, 900 mAh Ni-MH battery was charged from 0.95 V to 0.98 V in 240 s. Both the simulation and experiments verify that the proposed bistable EMG device based on magnetic coupling has advantages of wide operating bandwidth and high output power, which could be sufficient to power micro electronic devices.

show abstract

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

Cited by 10 publications

References 36 publications

Electromagnetic Vibrational Energy Harvesters: A Review

Electromagnetic Vibrational Energy Harvesters: A Review

Performance Analysis of an Electromagnetically Coupled Piezoelectric Energy Scavenger

A Magnetic-Coupled Nonlinear Electromagnetic Generator with Both Wideband and High-Power Performance

Contact Info

Product

Resources

About