Next Article in Journal
Synthesis and a Photo-Stability Study of Organic Dyes for Electro-Fluidic Display
Next Article in Special Issue
Single-Neuron Adaptive Hysteresis Compensation of Piezoelectric Actuator Based on Hebb Learning Rules
Previous Article in Journal
Prototyping a Versatile Two-Layer Multi-Channel Microfluidic Device for Direct-Contact Cell-Vessel Co-Culture
Previous Article in Special Issue
Compensation of Hysteresis in the Piezoelectric Nanopositioning Stage under Reciprocating Linear Voltage Based on a Mark-Segmented PI Model
Open AccessArticle

A Piezo-Electromagnetic Coupling Multi-Directional Vibration Energy Harvester Based on Frequency Up-Conversion Technique

1
College of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou 310018, China
2
Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China
*
Author to whom correspondence should be addressed.
Micromachines 2020, 11(1), 80; https://doi.org/10.3390/mi11010080
Received: 16 December 2019 / Revised: 29 December 2019 / Accepted: 8 January 2020 / Published: 11 January 2020
(This article belongs to the Special Issue Piezoelectric Transducers: Materials, Devices and Applications)
Harvesting vibration energy to power wearable devices has become a hot research topic, while the output power and conversion efficiency of a vibration energy harvester with a single electromechanical conversion mechanism is low and the working frequency band and load range are narrow. In this paper, a new structure of piezoelectric electromagnetic coupling up-conversion multi-directional vibration energy harvester is proposed. Four piezoelectric electromagnetic coupling cantilever beams are installed on the axis of the base along the circumferential direction. Piezoelectric plates are set on the surface of each cantilever beam to harvest energy. The permanent magnet on the beam is placed on the free end of the cantilever beam as a mass block. Four coils for collecting energy are arranged on the base under the permanent magnets on the cantilever beams. A bearing is installed on the central shaft of the base and a rotating mass block is arranged on the outer ring of the bearing. Four permanent magnets are arranged on the rotating mass block and their positions correspond to the permanent magnets on the cantilever beams. The piezoelectric cantilever is induced to vibrate at its natural frequency by the interaction between the magnet on cantilever and the magnets on the rotating mass block. It can collect the nonlinear impact vibration energy of low-frequency motion to meet the energy harvesting of human motion. View Full-Text
Keywords: piezo-electromagnetic coupling; up-conversion; vibration energy harvester; multi-directional vibration; low frequency vibration piezo-electromagnetic coupling; up-conversion; vibration energy harvester; multi-directional vibration; low frequency vibration
Show Figures

Figure 1

MDPI and ACS Style

Shi, G.; Chen, J.; Peng, Y.; Shi, M.; Xia, H.; Wang, X.; Ye, Y.; Xia, Y. A Piezo-Electromagnetic Coupling Multi-Directional Vibration Energy Harvester Based on Frequency Up-Conversion Technique. Micromachines 2020, 11, 80.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop