Article
Energy & Fuels
Tao Wang, Haobin Lv, Xin Wang
Summary: This study develops a novel built-in electromagnetic energy harvester that utilizes pitch vibrations to provide sustainable power supply for unmanned marine devices. The prototype demonstrates competitive energy extraction efficiency and can serve as a potential candidate for powering onboard electronics.
Article
Engineering, Electrical & Electronic
Carlos Imbaquingo, Christian Bahl, Andrea R. Insinga, Rasmus Bjork
Summary: This article presents an elliptically shaped electromagnetic vibration energy harvester that can tune the resonance frequency easily. The harvester consists of a free-to-move ring-shaped permanent magnet, elliptically distributed cube magnets in a fixed holder, and two coil windings above and below the harvester. When subjected to vibrations, the ring magnet moves until it is pushed back by the magnetic force from the fixed cube magnets, inducing an electromagnetic force on the fixed coils. Experimental results show that the harvester has two resonant frequencies at 4.5 Hz and 7 Hz, generating around 1.5 mW of power.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Thermodynamics
Hong-Xiang Zou, Meng Li, Lin-Chuan Zhao, Qiu-Hua Gao, Ke-Xiang Wei, Lei Zuo, Feng Qian, Wen-Ming Zhang
Summary: This study presents a new magnetically coupled bistable piezoelectric energy harvesting approach for underwater applications, utilizing a flextensional piezoelectric transducer. The system has nonlinear bistable characteristics, exhibiting stable power output performance in harsh environments like underwater.
Article
Thermodynamics
Tao Wang
Summary: This paper comprehensively reviews the latest progress of pendulum-based energy harvesting. It discusses the pendulum mechanisms, integrations of transducers, and applications of pendulums in different scenarios. The challenging issues and future trends of this technology are also summarized.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Engineering, Mechanical
Bogdan Vysotskyi, Jose-Francisco Ambia Campos, Elie Lefeuvre, Alexis Brenes
Summary: This work investigates the frequency response of an electrostatic MEMS energy harvester with an innovative gap-overlap transducer design. The study provides theoretical and experimental evidence of the strongly nonlinear behavior in MEMS dynamics caused by this design solution. Increasing the bias voltage leads to a shift in the frequency response towards lower frequencies and bending towards higher frequencies. The proposed gap-overlap transducer configuration is shown to be a simple and efficient solution for increasing the bandwidth of MEMS energy harvesters.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Instruments & Instrumentation
Qiang Yan, Xianzhi Dai, Zhang Zhang, Lijun Wang, Yong Wang
Summary: This paper proposes a broadband vibration energy harvester based on nonlinear magnetic force and rotary pendulums. By utilizing magnetic nonlinearity, the working bandwidth of the harvester is improved. The mechanical-magnetic-electrical analytical model of the harvester is established, and the theoretical value obtained by the model is consistent with the experimental value. The results demonstrate that the harvester exhibits strong nonlinearity through magnetic force.
SMART MATERIALS AND STRUCTURES
(2022)
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
Nanoscience & Nanotechnology
Rammohan Sriramdas, Dong Yang, Min-Gyu Kang, Mohan Sanghadasa, Shashank Priya
Summary: A universal energy harvester is designed in this study, which can convert ambient vibrations, magnetic fields, and sunlight into electricity with high power density. By optimizing the design, the efficiency of the solar cell is greatly improved, which is significant for the design of power sources for Internet of Things sensors and wireless devices in the future.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Analytical
Xiang Li, Jinpeng Meng, Chongqiu Yang, Huirong Zhang, Leian Zhang, Rujun Song
Summary: This paper proposes a magnetically coupled electromagnetic energy harvester (MCEEH) for harvesting human body kinetic energy efficiently at low frequency. Experimental results show that under specific conditions, the MCEEH can achieve high output power.
Article
Materials Science, Ceramics
Jian Li, Xinxin Han, Xiaobo Rui, Hang Li, Yu Zhang, Wen Zhang, Zhoumo Zeng
Summary: This paper proposes a piezoelectric-electromagnetic energy harvester based on magnetic coupling for wind energy harvesting. The prototype utilizes magnetic force to transmit mechanical energy and generate electricity. The magnetic coupling extends the lifespan of the piezoelectric ceramic, and the presence of multiple magnets increases the output power. The rational arrangement of the magnets allows for a small start-up wind speed.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Junjie Xu, Yonggang Leng, Fei Sun, Xukun Su, Xiaoyu Chen
Summary: A novel tri-magnet levitation bi-stable electromagnetic energy harvester is proposed, using a single-sided bipolar ring magnet to realize the bi-stable nonlinear mechanism. The potential energy variation is investigated to balance the asymmetric potential wells caused by the self-weight of the levitating magnet. Experimental results show that the device has a tunable operating bandwidth and a wider bandwidth requires sacrificing output power.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Thermodynamics
Ge Shi, Wentao Zeng, Yinshui Xia, Jubing Xa, Shengyou Jin, Qing Li, Xiudeng Wang, Huakang Xia, Yidie Ye
Summary: This study presents a floating piezoelectric electromagnetic hybrid wave vibration energy harvester that is actuated by a rotating wobble ball. The kinematic equation of the rotating wobble ball under the influence of the wave is established by simplifying the ocean wave model. One notable feature of the proposed harvester is its ability to harvest wave vibration energy using a frequency up-conversion mechanism. Experimental results demonstrate that the hybrid energy harvester can efficiently collect low-frequency wave vibrations and generate electrical power.
Article
Computer Science, Information Systems
Mingjing Cai, Wei-Hsin Liao
Summary: An inertial energy harvester without additional proof mass is proposed to efficiently scavenge the kinetic energy of human limb swing using a planetary structure. Experimental results show that the prototype outperforms its counterparts in pseudowalking and real walking tests in terms of power output and density.
IEEE INTERNET OF THINGS JOURNAL
(2021)
Article
Energy & Fuels
Niloufar Zabihi, Zewen Gu, Mohamed Saafi
Summary: This paper proposes a new design for an electromagnetic road energy harvester and evaluates its performance through numerical simulations and experiments. The new harvester can provide cheap and on-demand electricity for low-power devices and sensors of smart cities, and meet further application requirements.
Article
Engineering, Electrical & Electronic
Shuxian Wang, Zhiyi Wu, Shiyou Liu
Summary: This paper describes an electromagnetic energy harvester that converts vibration energy into electrical power using a rotary-translational magnetic regulation system. The experiments show that the magnetic sphere with magnetic regulation has periodic and regular output characteristics.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
