Electromagnetic energy harvesting from vibrations of multiple frequencies

Yang, Bin; Lee, Chengkuo; Xiang, Wenfeng; Xie, Jin; He, Jiating; Kotlanka, Rama Krishna; Low, Siew Ping; Feng, Hua

doi:10.1088/0960-1317/19/3/035001

Cited by 332 publications

(176 citation statements)

References 11 publications

Supporting

Mentioning

175

Contrasting

Order By: Relevance

“…The respective three fundamental resonant frequencies are about 113, 183 and 281 Hz. Yang et al [28] designed a multi-frequency EMEH with three resonant modes of 369, 938 and 1184 Hz. Yang et al [29] added a nonlinear spring oscillator to a PEH to scavenge the multi-frequency vibration energy.…”

Section: Introductionmentioning

confidence: 99%

A Novel Tunable Multi-Frequency Hybrid Vibration Energy Harvester Using Piezoelectric and Electromagnetic Conversion Mechanisms

Shan

Chen

et al. 2016

Applied Sciences

View full text Add to dashboard Cite

This paper presents a novel tunable multi-frequency hybrid energy harvester (HEH). It consists of a piezoelectric energy harvester (PEH) and an electromagnetic energy harvester (EMEH), which are coupled with magnetic interaction. An electromechanical coupling model was developed and numerically simulated. The effects of magnetic force, mass ratio, stiffness ratio, and mechanical damping ratios on the output power were investigated. A prototype was fabricated and characterized by experiments. The measured first peak power increases by 16.7% and 833.3% compared with that of the multi-frequency EMEH and the multi-frequency PEH, respectively. It is 2.36 times more than the combined output power of the linear PEH and linear EMEH at 22.6 Hz. The half-power bandwidth for the first peak power is also broadened. Numerical results agree well with the experimental data. It is indicated that magnetic interaction can tune the resonant frequencies. Both magnetic coupling configuration and hybrid conversion mechanism contribute to enhancing the output power and widening the operation bandwidth. The magnitude and direction of magnetic force have significant effects on the performance of the HEH. This proposed HEH is an effective approach to improve the generating performance of the micro-scale energy harvesting devices in low-frequency range.

show abstract

Section: Introductionmentioning

confidence: 99%

A Novel Tunable Multi-Frequency Hybrid Vibration Energy Harvester Using Piezoelectric and Electromagnetic Conversion Mechanisms

Shan

Chen

et al. 2016

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…Therefore, the power can be determined as (8) By replacing z(t) with its equivalent equation, the equation of power yields the following (9) The energy transferred during one complete cycle of vibration is (10) where, (11) and (12) Combining equations 10, 11, and 12, the total energy during one cycle can be achieved as (13) The average power can be estimated by (14) Taking total energy into consideration, average power can also be expressed as (15) Incorporating the vibration amplitude of the mass into equation 15 gives the average power delivered to the electrical do- …”

Section: Power = Force × Velocitymentioning

confidence: 99%

Design and Fabrication of Low Frequency Driven Energy Harvester Using Electromagnetic Conversion

Lee¹,

Chung²

2013

Transactions on Electrical and Electronic Materials

View full text Add to dashboard Cite

This paper describes a low frequency driven electromagnetic energy harvester (EMEH) which consists of a thin flame resistant (FR-4) planar spring, NdFeB permanent magnets, and a copper coil. The FR-4 spring was fabricated using a desk computer numerical control (CNC) 3D modeling machine. Mathematical modeling and ANSYS finite element analysis (FEA) were used totheoretically investigate the mechanical properties of the spring mass system. The proposed EMEH generates a maximum power of 65.33 μW at a resonance frequency of 8 Hz with an acceleration of 0.2 g (1 g = 9.8 m/s 2 ) and a superior normalized power density (NPD) of 77 μW /cm 3 ·g 2 .

show abstract

“…Ching et al [17] and Liu et al [18,19] have respectively employed spiral and circular spring structures connected with center mass to realize electromagnetic energy harvesting with three distinct vibration modes. Yang et al [20] have attached multiple individual masses along a fixed-fixed beam for achieving multiple vibration modes of the device. Among these works, the multi-frequency MEMS devices were limited to be around three resonant peaks.…”

Section: Introductionmentioning

confidence: 99%

An Electromagnetic MEMS Energy Harvester Array with Multiple Vibration Modes

et al. 2015

Self Cite

View full text Add to dashboard Cite

This paper reports the design, micromachining and characterization of an array of electromagnetic energy harvesters (EHs) with multiple frequency peaks. The authors present the combination of three multi-modal spring-mass structures so as to realize at least nine resonant peaks within a single microelectromechanical systems (MEMS) chip. It is assembled with permanent magnet to show an electromagnetic-based energy harvesting capability. This is the first demonstration of multi-frequency MEMS EH existing with more than three resonant peaks within a limited frequency range of 189 to 662 Hz. It provides a more effective approach to harvest energy from the vibration sources of multiple frequency peaks.

show abstract

Electromagnetic energy harvesting from vibrations of multiple frequencies

Cited by 332 publications

References 11 publications

A Novel Tunable Multi-Frequency Hybrid Vibration Energy Harvester Using Piezoelectric and Electromagnetic Conversion Mechanisms

A Novel Tunable Multi-Frequency Hybrid Vibration Energy Harvester Using Piezoelectric and Electromagnetic Conversion Mechanisms

Design and Fabrication of Low Frequency Driven Energy Harvester Using Electromagnetic Conversion

An Electromagnetic MEMS Energy Harvester Array with Multiple Vibration Modes

Contact Info

Product

Resources

About