Electromagnetic Energy-Harvesting Shock Absorbers: Design, Modeling, and Road Tests

Li, Zhongjie; Zuo, Lei; Luhrs, George; Lin, Liangjun; Qin, Yi‐Xian

doi:10.1109/tvt.2012.2229308

Cited by 317 publications

(150 citation statements)

References 12 publications

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“…The harvested energy was measured as low, however, for the measured velocities, the amount of harvestable energy rate or efficiency has increased with increasing velocities. Many studies have reported that when the speed increases, the amount of harvestable energy rate or efficiency increases [14], [28]. Therefore, our results were consistent with previous studies.…”

Section: Discussionsupporting

confidence: 93%

“…We performed the energy harvesting test at three different velocities such as 0.004, 0.0045 and 0.005 m/s. In previous studies of energy harvesting, the range of testing velocities were mainly chosen between 0-0.3 m/s [14], [28], [30]. However, in this study, the velocity values were chosen as low to analyse the systemic errors and leakages at low velocities.…”

Section: Resultsmentioning

confidence: 99%

“…The external circuit was integrated to the system to observe the harvested energy properties of shock absorbers. To obtain the optimum harvesting energy from the regenerative shock absorber, the value of external resistors of system was chosen as equal to the internal resistors of the coil and generator [14], [24]- [28]. The constant resistors were used as the load of the energy harvesting system.…”

Section: Energy Harvesting Systemmentioning

confidence: 99%

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Design of the Hybrid Regenerative Shock Absorber and Energy Harvesting from Linear Movement

Demetgül¹,

Guney²

2017

JOCET

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Abstract-Shock absorbers or dampers are used to maintain the contact between the vehicle's tires and road surface, to absorb the vibrations generated from the road disturbances and recently they are used in energy harvesting. In this study, a hybrid regenerative shock absorber system containing hydraulic and electromagnetic (EM) damper mechanisms was designed to generate electricity. The energy harvesting was applied from the hybrid regenerative shock absorber using excited linear movement. A total of 0.25W for 0.004 m/s, 0.4W for 0.0045 m/s and 0.66W for 0.005 m/s was harvested using 80Ω and 2Ω external resistors for hydraulic part and for EM part, respectively, at 15 mm amplitude in response to the specified excitation. The mean power for 0.005 m/s was calculated as 0.003W for coil and as 0.56W for generator. The harvested energy was measured as low for measured velocities, however, the amount of harvestable energy rate or efficiency has increased with increasing velocity.Index Terms-Electromagnetic damper, energy harvesting, shock absorber, hydraulic damper, regenerative damper.

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Section: Discussionsupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Energy Harvesting Systemmentioning

confidence: 99%

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Design of the Hybrid Regenerative Shock Absorber and Energy Harvesting from Linear Movement

Demetgül¹,

Guney²

2017

JOCET

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“…Generally, a rotary motor or a linear one is applied in those suspensions. When the rotary motor is used, the [18,19]. The linear generator can directly harvest the vibration energy [20][21][22], but, with a given space, the rotary one can generate more power [23].…”

Section: Introductionmentioning

confidence: 99%

“…For their promising prospect, the study of regeneration suspensions should be combined with the energy harvesting and vibration control [24]. The damping of the EMD can be changed by replacing its external loads (resistors) [18,25]; this characteristic can be applied in vibration control. In addition, the EMDs are designed with MR or ER dampers [26,27] in order to increase the output damping force.…”

Section: Introductionmentioning

confidence: 99%

An Energy Saving Variable Damping Seat Suspension System With Regeneration Capability

Ning

Sun

et al. 2018

IEEE Trans. Ind. Electron.

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In this paper, an energy saving variable damping seat suspension system is designed, manufactured and validated. A controllable electromagnetic damper (EMD), which consists of a permanent magnet synchronous motor (PMSM), a 3-phase rectifier, a metal-oxide-semiconductor field-effect transistor (MOSFET) switch module, an external resistor, a diode, and a capacitor, is designed and tested firstly. The EMD is integrated with a planetary gearbox to amplify its torque output, and both of them are installed on the centre of the scissors structure of a seat suspension. The EMD's damping property can be controlled by exerting pulse width modulation (PWM) signal with different duty cycles on the MOSFET switch module. By analysing the EMD test results and the seat suspension's kinematic, the controllable damping of the EMD is derived from 115.68 Ns/m to 669.74 Ns/m. A control method for vibration isolation is proposed considering that the generated damping force is reverse to the suspension's relative velocity, and its value is related to both the damping coefficient and the relative velocity, thus the desired control force can be partially achieved by the variable damper. The proposed variable damping seat suspension and its controller are validated on a 6-degree of freedom (6-DOF) vibration platform in both frequency domain and time domain. The test results show that the controlled variable damping seat suspension has better performance in vibration isolation than the proposed seat with highest and lowest damping, and the conventional passive one. In the meantime, the RMS value of the system harvestable power is 1.492 W, and the power consumption of the PWM control signal is very few. Therefore, this variable damping seat suspension can improve the ride comfort with ignorable energy cost.

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Dual Friction Mode Textile‐Based Tire Cord Triboelectric Nanogenerator

Seung

Yoon

Kim

et al. 2020

Adv Funct Materials

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As vehicles become smarter, an alternative power solution will become increasingly important for future vehicle development. With this context, a triboelectric nanogenerator (TENG) is proposed which fully sits on tires and consists of textile-based tire materials. Both polydimethylsiloxane-coated silver textile, serving as an external tire tread material, and nylon woven textile, serving as an internal tire cord material, performing as opposing triboelectric materials, are well adaptable for rolling tires. It is demonstrated that tire material-based TENG performs at its maximum as it makes mutual contact with the road. The power generation property is characterized under different driving situations such as different tire rotation speeds and varying numbers of devices on the tires. The TENG demonstrates a maximum output voltage and a current of about 225 V and 42 µA, respectively, along with an output power of 0.5 mW at optimum load. The work offers the possibility to not only directly operate minute power-consuming electronics but also collect power and store it while driving a vehicle.

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Electromagnetic Energy-Harvesting Shock Absorbers: Design, Modeling, and Road Tests

Cited by 317 publications

References 12 publications

Design of the Hybrid Regenerative Shock Absorber and Energy Harvesting from Linear Movement

Design of the Hybrid Regenerative Shock Absorber and Energy Harvesting from Linear Movement

An Energy Saving Variable Damping Seat Suspension System With Regeneration Capability

Dual Friction Mode Textile‐Based Tire Cord Triboelectric Nanogenerator

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