Modeling and Optimization of a Tubular Generator for Vibration Energy Harvesting Application

Friedrich, Leo A. J.; Paulides, Jjh Johannes; Lomonova, E.A.

doi:10.1109/tmag.2017.2710232

Cited by 14 publications

(10 citation statements)

References 5 publications

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“…The predicted regenerated power versus load resistance and the damping coefficient versus load resistance characteristics, which are displayed in Figure 7b, closely resembled those of an electromagnetic damper [20]. Moreover, the geometric features of the proposed REC damper were in line with those of other electromagnetic dampers [20][21][22]28].…”

Section: Discussionsupporting

confidence: 54%

“…The REC damper, when in output mode, can provide a damping function or electric power. The latter is controlled by varying the load resistance, 𝑅 [19][20][21][22]25].…”

Section: Electromagnetic Modelmentioning

confidence: 99%

“…The REC damper, when in output mode, can provide a damping function or electric power. The latter is controlled by varying the load resistance, R L [19][20][21][22]25]. The electromotive force, Vemf, for each coil can be expressed in terms of the Faraday-Lenz law as:…”

Section: Electromagnetic Modelmentioning

confidence: 99%

“…A tubular, slot-less, three-phase electromagnetic generator with extensive design modelling guidelines and a reference methodology was presented in [22]. The influence of various parameters on both the efficiency of the generator and the desired voltage output was discussed for the customary frequency range for automotive suspension.…”

Section: Introductionmentioning

confidence: 99%

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Multiphysics Design of an Automotive Regenerative Eddy Current Damper

Jamolov

Peccini²,

Maizza

2022

Energies

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This research presents a finite element multi-physics design methodology that can be used to develop and optimise the inherent functions and geometry of an innovative regenerative eddy current (REC) damper for the suspension of B class vehicles. This methodology was inspired by a previous work which has been applied successfully for the development of an eddy current (EC) damper used for the same type of applications. It is based on a multifield finite element coupled model that can be used to fulfil the electromagnetic, thermal, and fluid dynamic field properties and boundary conditions of a REC damper, as well as its non-linear material properties and boundary conditions, while also analysing its damping performance. The proposed REC damper features a variable fail-safe damping force, while electric power is advantageously regenerated at high suspension frequencies. Its damping performance has been benchmarked against that of a regular hydraulic shock absorber (selected as a reference) by analysing the dynamic behaviour of both systems using a quarter car suspension model. The results are expressed in terms of damping force, harvested power, thermal field, comfort and handling, with reference to ISO-class roads. The optimisation analysis of the REC damper has suggested useful guidelines for the harmonisation of damping and regenerative power performances during service operation at different piston speeds.

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Section: Discussionsupporting

confidence: 54%

“…The REC damper, when in output mode, can provide a damping function or electric power. The latter is controlled by varying the load resistance, 𝑅 [19][20][21][22]25].…”

Section: Electromagnetic Modelmentioning

confidence: 99%

Section: Electromagnetic Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multiphysics Design of an Automotive Regenerative Eddy Current Damper

Jamolov

Peccini²,

Maizza

2022

Energies

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“…Linear generators that directly convert energy without a linear motion conversion mechanism are used for ocean and vibration power generation [1][2][3][4][5]. The input energy of the systems has a random waveform with nonconstant cycles and amplitudes.…”

Section: Introductionmentioning

confidence: 99%

Generator Design Considering Mover Action to Improve Energy Conversion Efficiency in a Free-Piston Engine Generator

et al. 2021

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In a free-piston engine generator (FPEG), the power of the engine can be directly regenerated by linear generators without a crank. The mover motion of this system is interrelated with engine and power generation efficiencies due to the direct connection between the mover of the generator and the piston of the engine. The generator should be designed to improve the overall energy conversion efficiency. The dimensions and mass of the mover limit its operating stroke and drive frequency. Herein, we propose a method for designing linear generators and constructing FPEG systems, considering the mover operation to improve engine efficiency. We evaluated the effect of mover operation on the engine and generation efficiencies using thermal and electromagnetic field analysis software. The proposed design method improves the overall energy conversion efficiency compared with a generator that considers only the maximization of generation efficiency. Setting the mover operation for higher engine efficiency and designing a linear generator to realize the operation can effectively improve the energy conversion efficiency of FPEGs.

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Study and implementation of a novel high‐efficiency piezoelectric energy harvesting circuit

Jiang,

Li,

Zhang

et al. 2023

Circuit Theory & Apps

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SummaryThis paper proposes a self‐powered SSHI piezoelectric energy extraction circuit combined with Modified FOCV‐MPPT technology, which analyzes the electrical characteristics of S‐SSHI operation. The paper demonstrates that the determination of the optimal operating state of S‐SSHI can be determined independently of the open‐circuit voltage. Based on the key parameters obtained from the theoretical analysis, the FOCV‐MPPT strategy is modified, and the corresponding functional circuit is designed. This strategy serves as an intermediate stage between S‐SSHI and the load, addressing the dependence of S‐SSHI output power on the load while avoiding the power supply interruption issue of the traditional FOCV‐MPPT strategy. In addition, the higher output power provided by S‐SSHI improves the utilization of MPPT technology. The correctness of the investigations is verified through the simulation and experiments. By using self‐powered S‐SSHI, the proposed circuit increases the output power of PEH by a factor of 2.46. In the open‐circuit voltage range of 2–7 V, the average maximum power tracking efficiency achieved 90.1%. The maximum tracking efficiency can reach 98%.

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Modeling and Optimization of a Tubular Generator for Vibration Energy Harvesting Application

Cited by 14 publications

References 5 publications

Multiphysics Design of an Automotive Regenerative Eddy Current Damper

Multiphysics Design of an Automotive Regenerative Eddy Current Damper

Generator Design Considering Mover Action to Improve Energy Conversion Efficiency in a Free-Piston Engine Generator

Study and implementation of a novel high‐efficiency piezoelectric energy harvesting circuit

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