Article
Engineering, Electrical & Electronic
Qianju Cheng, Zean Lv, Zhi Liu, Qingmeng Wang
Summary: This paper presents a novel piezoelectric energy harvester (PEH) based on the traditional impact frequency up-converted PEH to achieve lower and broader operating frequency. The introduced nonlinear magnetic force offers a lower initial frequency and broader operating bandwidth, as shown by theoretical results and experimental study.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Energy & Fuels
Saleh Alhumaid, Daniel Hess, Rasim Guldiken
Summary: This research examines the possibility of recovering energy from vehicle shock absorber-induced mechanical vibration using piezoelectric and electromagnetic transducers. A rotational piezoelectric vibration-energy-harvesting device with a magnetic coupling mechanism is presented, which demonstrates robust performance over a range of frequencies. The regenerative suspension system produces high and steady open-circuit voltages regardless of excitation frequencies.
Article
Materials Science, Multidisciplinary
Xiaotian Zheng, Lipeng He, Shuai Jiang, Lei Sun, Zhonghua Zhang, Guangming Cheng
Summary: This paper presents an inertial noncontact piezoelectric rotary energy harvester with linear reciprocating motion (L-PREH). It overcomes the limitations of existing gravity-excited piezoelectric rotary harvesters by translating rotational motion into linear motion and using inertial force excitation. The study derives motion governing equations and constructs an electromechanical coupling model for piezoelectric transducers. The experimental results show that L-PREH can generate high output voltage and power, making it suitable for driving low-power devices.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Lipeng He, Xiangfeng Gu, Yi Hou, Renhui Hu, Jianwen Zhou, Guangming Cheng
Summary: This paper presents a harvester that collects vibrational energy by utilizing the piezoelectric effect. The design incorporates a non-contact incentive model to avoid mechanical collision and wear, thus improving the device's service life.
Article
Mechanics
Weiqiang Sheng, Hongjun Xiang, Zhiwei Zhang, Xiaoping Yuan
Summary: This paper investigates the problem of harvesting vibration energy from railway bridges and proposes an efficient dynamic-magnified piezoelectric energy harvester. Theoretical and experimental studies show that this energy harvester has high energy output, as well as high maximum output voltage and power.
COMPOSITE STRUCTURES
(2022)
Article
Energy & Fuels
Jia Wang, Fan Bo, Jiwen Fang, Jiuchun Zhao, Chong Li
Summary: This paper designs a piezoelectric energy harvester based on multi-cantilevers and introduces nonlinear magnetic force to improve its response frequency band and energy conversion efficiency. The modal of the cantilever beam is verified by finite element simulation, and the simulation and experimental results demonstrate that the proposed energy harvesting structure can broaden the frequency bandwidth and improve energy harvesting efficiency.
Article
Chemistry, Analytical
Shan Gao, Qiang Cao, Nannan Zhou, Hongrui Ao, Hongyuan Jiang
Summary: With the development of industry IoT, mechanical energy harvesting technology has been widely studied as a potential solution for battery substitution. In this paper, a spoke-like piezoelectric energy harvester is designed and fabricated, aiming to improve output efficiency and performance through circuit optimization and the use of magnetic mass.
Article
Engineering, Mechanical
Guangdong Sui, Xiaobiao Shan, Chengwei Hou, Haigang Tian, Jingtao Hu, Tao Xie
Summary: This paper proposes a magnetically coupled piezoelectric energy harvester based on fluid-induced vibration to achieve high-efficiency performance in low-velocity water environments. The results show significant improvements in the initial vibration velocity, velocity bandwidth, and maximum output voltage compared to non-magnetic PEH. The proposed structure provides a reference for the optimization of underwater energy harvesting and lays a foundation for further interconnection of self-powered sensors.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Civil
Qianzheng Du, Xi Wang, Shuo Liu, Tao Wang, Guoqiang Fu, Xianyin Mao, Caijiang Lu
Summary: This paper aims to improve the performance of the piezoelectric buckled beam under low vibration environment using the noncontact magnetic modulation method. The influence of magnetic force on the dynamic response of the harvester is investigated through numerical simulation and experiment. It is found that the magnetic force has a softening effect on the structure, allowing the harvester to achieve large-amplitude vibration under low-amplitude or low-frequency vibration. Experimental results show that the introduction of magnetic force significantly increases the voltage output of the harvester.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2023)
Article
Chemistry, Analytical
Xia Li, Tongtong Ma, Benxue Liu, Chengming Wang, Yufeng Su
Summary: The magnetic coupling piezoelectric-electromagnetic composite galloping energy harvester (MPEGEH) is a novel solution utilizing magnetic force to couple two energy harvesters, resulting in good output power and nonlinear characteristics. Experimental results show that improving the coupling degree of the two parts of MPEGEH can enhance its nonlinear characteristics and output power.
Article
Chemistry, Analytical
Yongqiang Zhu, Zhaoyang Zhang, Pingxia Zhang, Yurong Tan
Summary: The cross-shaped magnetically coupled piezoelectric-electromagnetic hybrid energy harvester can collect energy in two vibration directions simultaneously and efficiently generate electricity at lower vibration frequencies.
Article
Thermodynamics
Fan Yang, Mingyuan Gao, Ping Wang, Jianyong Zuo, Jun Dai, Jianli Cong
Summary: This paper presents an efficient rail-borne piezoelectric energy harvester to collect energy from random railway vibration in a broad frequency range. Experimental results show that the vibration reduction effect of the harvester is significantly improved in the high-frequency range compared to an ordinary harvester.
Article
Engineering, Mechanical
Guangdong Sui, Xiaofan Zhang, Xiaobiao Shan, Chengwei Hou, Jingtao Hu, Tao Xie
Summary: This paper proposes a wake-excited magnetically coupled piezoelectric energy harvester (WMPEH) for self-powered microelectronic devices in a fluid environment. Water tunnel experiments are conducted to prove the effectiveness of wake excitation and magnetic coupling, and the impact on the harvester's performance. The results show that the WMPEH has a higher output voltage compared to other types of energy harvesters, providing a foundation for further improvement of underwater self-powered systems.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Electrical & Electronic
Weilin Liao, Zhonghua Zhang, Xin Huang, Li Zhang, Shuyun Wang, Junwu Kan
Summary: In this study, a magnetic-coupling non-contact piezoelectric wind energy harvester with a compound-embedded structure is proposed to enhance power generation performance, environmental adaptability, and reliability. By altering the interference effect of a square plate on a cylinder, the performance improvement and suppression of power generation are achieved. Through simulations and experiments, the feasibility and effectiveness of the proposed harvester are validated.
IEEE SENSORS JOURNAL
(2022)
Article
Mathematics, Applied
Krzysztof Kecik
Summary: This study presents a numerical analysis of an absorber/harvester system installed on semi-active suspension with the goal of mitigating vibration in the primary structure while simultaneously harvesting energy. The pendulum tuned mass absorber has been modified with a magnetic levitation harvester, and a semi-active suspension system consisting of MR damper and SMA spring is proposed for controlling dynamic response. Proper parameter configurations can effectively achieve energy harvesting along with vibration mitigation in the host system.
ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK
(2021)
Article
Energy & Fuels
Zhen Zhao, Tie Wang, Jinhong Shi, Baifu Zhang, Ruiliang Zhang, Meng Li, Yonggang Wen
ENERGY SCIENCE & ENGINEERING
(2019)
Article
Energy & Fuels
Zhen Zhao, Tie Wang, Meng Li, Heng Wang, Yiquan Wang
Summary: This study proposed a new method to optimize the energy management strategy for fuel cell vehicles, reducing fuel consumption and providing smoother, more stable output power from the fuel cell system. By using fuzzy control, sensitivity analysis, and neural network methods, the optimized fuzzy control was able to save hydrogen consumption and increase fuel economy.
ENERGY SCIENCE & ENGINEERING
(2021)
Article
Instruments & Instrumentation
Yongxin Li, Zhen Zhao, Wenze Song, Changhong Wang, Qingcheng Wang, Baifu Zhang
Summary: This study proposes a novel kinetic energy harvester system that uses magnetically coupled piezoelectric technology to address the power supply issue of wireless sensors, enabling them to be self-powered. Experimental results show that the system can effectively provide self-sustained power for low-power appliances in new energy buses.
SMART MATERIALS AND STRUCTURES
(2023)
Article
Energy & Fuels
Yongxin Li, Zhen Zhao, Duxing Fan, Haonan Wang, Zhangwei Yan, Baifu Zhang
Summary: This article introduces an inertial energy harvester based on noncontact magnetic force for self-powered applications in new energy buses. The harvester efficiently captures and converts the inertial kinetic energy into electrical power, providing self-powered capabilities for low-power vehicle appliances. The feasibility and effectiveness of the harvester are verified through experiments on a campus bus.
