Linear electromagnetic devices for vibration damping and energy harvesting: Modeling and testing

2012 ◽  
Vol 34 ◽  
pp. 198-212 ◽  
Author(s):  
Songye Zhu ◽  
Wen-ai Shen ◽  
You-lin Xu
Keyword(s):  
Energy Harvesting ◽  
Vibration Damping ◽  
Electromagnetic Devices

Energy-Harvesting Adaptive Vibration Damping in High-Speed Train Suspension using Electromagnetic Dampers

2021 ◽  
pp. 2140002
Author(s):  
Qinlin Cai ◽  
Yingyu Hua ◽  
Songye Zhu
Keyword(s):  
Energy Harvesting ◽  
Vibration Control ◽  
Output Power ◽  
High Speed ◽  
Vibration Damping ◽  
Numerical Results ◽  
Dual Function ◽  
High Speed Train ◽  
Adaptive Vibration Control ◽  
Electromagnetic Damper

Electromagnetic damper cum energy harvester (EMDEH) is an emerging dual-function device that enables simultaneous energy harvesting and vibration control. This study presents a novel energy-harvesting adaptive vibration control application of EMDEH on the basis of the past EMDEH development in passive control. The proposed EMDEH comprises an electromagnetic damper connected to a specifically designed energy harvesting circuit (EHC), wherein the EHC is a buck–boost converter with a microcontroller unit (MCU) and a bridge rectifier. The effectiveness of the energy-harvesting adaptive vibration damping is validated numerically through a high-speed train (HST) model running at different speeds. MCU-controlled adaptive duty cycle adjustment in the EHC enables the EMDEHs to adaptively offer the optimal damping coefficients that are highly dependent on train speeds. In the meantime, the harvested power can be stored in rechargeable batteries by the EHC. Numerical results project the average output power ranging from 40.5[Formula: see text]W to 589.8[Formula: see text]W from four EMDEHs at train speed of 100–340[Formula: see text]km/h, with a maximum output power efficiency of approximately 35%. In comparison to energy-harvesting passive vibration control and a pure viscous damper, the proposed energy-harvesting adaptive control strategy can improve vibration reductions by approximately 40% and 27%, respectively, at a speed of 340[Formula: see text]km/h. These numerical results clearly demonstrate the benefit and prospect of the proposed energy-harvesting adaptive vibration control in HST suspensions.

scholarly journals Review of Passive Electromagnetic Devices for Vibration Damping and Isolation

2019 ◽  
Vol 2019 ◽  
pp. 1-16 ◽  
Author(s):  
Efren Diez-Jimenez ◽  
Rocco Rizzo ◽  
Maria-Jesus Gómez-García ◽  
Eduardo Corral-Abad
Keyword(s):  
Lower Cost ◽  
Mechanical Vibration ◽  
Vibration Damping ◽  
Technology Readiness ◽  
Damping Capacity ◽  
Electromagnetic Devices ◽  
Technology Readiness Level ◽  
Recent Developments ◽  
Readiness Level ◽  
Application Fields

Passive electromagnetic devices for vibration damping and isolation are becoming a real alternative to traditional mechanical vibration and isolation methods. These types of devices present good damping capacity, lower cost, null power consumption, and higher reliability. In this work, a state-of-the-art review has been done highlighting advantages and drawbacks, application fields, and technology readiness level of most recent developments. In addition, a general introductory section relates presents key considerations that any engineer, electrical or mechanical, needs to know for a deep comprehension and correct design of these types of devices.

scholarly journals Vision Analysis of the Influence of Piezoelectric Energy Harvesting on Vibration Damping of a Cantilever Beam

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7168
Author(s):  
Dariusz Grzybek ◽  
Andrzej Sioma
Keyword(s):  
Energy Harvesting ◽  
Cantilever Beam ◽  
Load Resistance ◽  
Vibration Damping ◽  
Laboratory Research ◽  
Passive Damping ◽  
Shunt Resistance ◽  
Piezoelectric Energy ◽  
Harvesting Process ◽  
The Given

A cantilever beam, manufactured from a steel-carrying substrate and two patches of Macro Fiber Composite of P2 type, was a subject of laboratory research. MFC patches were glued on both sides of the carrying substrate and were parallelly connected. An experimental determination of an optimal resistance for both energy harvesting and vibration passive damping of the cantilever beam was the purpose of the conducted laboratory research. The research contained 10 experiments in which courses of the energy-harvesting process and resistive passive damping of vibration were estimated. Energy harvesting was estimated by measurements of the generated current for the given load-resistance values. Resistive passive damping of vibration was assessed by using a vision method that enabled the displacements’ measurements of 10 selected points in the beam structure for the given shunt-resistance values. Values of both load resistance and shunt resistance were chosen on the basis of analytically calculated optimal load resistance and optimal shunt resistance. On the basis of the conducted experiments, the resistance range for which both the energy-harvesting process and the vibration-damping process are most effective was determined.

On the Improvement of Vibration Mitigation and Energy Harvesting Using Electromagnetic Vibration Absorber-Inerter: Exact H2 Optimization

2019 ◽  
Vol 141 (6) ◽  
Author(s):  
Eshagh Farzaneh Joubaneh ◽  
Oumar Rafiou Barry
Keyword(s):  
Energy Harvesting ◽  
Primary Structure ◽  
Vibration Suppression ◽  
Vibration Mitigation ◽  
Electromagnetic Devices ◽  
Dual Functional ◽  
Conflicting Objectives ◽  
Mass Damper ◽  
Parallel Circuit ◽  
Resonant Shunt

Abstract Electromagnetic resonant shunt tuned mass damper-inerter (ERS-TMDI) has recently been developed for dual-functional vibration suppression and energy harvesting. However, energy harvesting and vibration mitigation are conflicting objectives, thus rendering the multi-objectives optimization problem a very challenging task. In this paper, we aim at solving the design trade-off between these two objectives by proposing alternative configurations and finding the model with the best performance for both vibration suppression and energy harvesting. Three novel configurations are presented and are compared with the conventional ERS-TMDI. In the first two configurations, the primary structure and the absorber are only coupled through the spring. Both inerter and electromagnetic devices are connected to the ground in the first configuration, whereas only the inerter is connected to the ground in the second configuration. The third configuration is inspired by the recently developed three-element vibration-inerter (TEVAI), but in this case an electromagnetic device is sandwiched in between the primary structure and the absorber. Closed-form expressions are presented for optimum vibration mitigation and energy harvesting performances using H2 criteria for both ground and force excitations. The obtained explicit expressions are validated using matlab optimization toolbox. Simulation examples reveal that the first configuration performs the best, whereas the second performs the worst in terms of both vibration mitigation and energy harvesting. It is also demonstrated that replacing the series RLC with a parallel circuit can improve or degrade the vibration mitigation performance, but it constantly enhances the energy harvesting performance in all four models.

Semi-active damping and energy harvesting using an electromagnetic transducer

2017 ◽  
Vol 24 (12) ◽  
pp. 2542-2561 ◽  
Author(s):  
Giovanni Caruso ◽  
Sergio Galeani ◽  
Laura Menini
Keyword(s):  
Energy Harvesting ◽  
Optimal Strategies ◽  
Optimal Choice ◽  
Vibration Damping ◽  
Single Degree Of Freedom ◽  
Electromagnetic Transducer ◽  
Optimal Damping ◽  
Time Optimal ◽  
Active Control Strategy ◽  
The Pontryagin Maximum Principle

This article studies a semi-active control strategy applied to a vibration damping and to an energy harvesting problem. In particular, a single-degree-of freedom oscillating device is considered, comprising a mass connected to the ground by means of a spring, a dashpot and an electromagnetic transducer. The latter component yields a damping contribution which can be easily modulated between a minimum and a maximum value. By applying the Pontryagin maximum principle to the vibration damping problem, it is shown that the time optimal control law consists of a switching of the electromechanical damping contribution between the maximum and the minimum values. The same Principle is then applied to the optimization of the energy harvestable by the same structure under periodic excitation. Differently from the case of vibration damping, the solution of the latter problem can contain both regular phases (during which the optimal choice of the modulated damping is either at its maximum or at its minimum value) and singular phases (during which the optimal damping has smooth variations). Interestingly, it is also shown that when the objective is to dissipate rather than to harvest energy from the device, optimal strategies only consist of regular phases. Both the proposed semi-active strategies are shown to outperform corresponding optimized passive classic solutions, used as a benchmark for comparison.

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