Next Article in Journal
Batch Fabrication of Silicon Nanometer Tip Using Isotropic Inductively Coupled Plasma Etching
Previous Article in Journal
PIV-Based Acoustic Pressure Measurements of a Single Bubble near the Elastic Boundary
Open AccessArticle

Piezoelectric Performance of a Symmetrical Ring-Shaped Piezoelectric Energy Harvester Using PZT-5H under a Temperature Gradient

Department of Machine Design, School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
*
Authors to whom correspondence should be addressed.
Micromachines 2020, 11(7), 640; https://doi.org/10.3390/mi11070640
Received: 6 June 2020 / Revised: 18 June 2020 / Accepted: 22 June 2020 / Published: 29 June 2020
With the rapid development of microelectronics technology, low-power electronic sensors have been widely applied in many fields, such as Internet of Things, aerospace, and so on. In this paper, a symmetrical ring-shaped piezoelectric energy harvester (SR-PEH) is designed to provide energy for the sensor to detect the ambient temperature. The finite element method is used by utilizing software COMSOL 5.4, and the electromechanical coupling model of the piezoelectric cantilever is established. The output performance equations are proposed; the microelectromechanical system (MEMS) integration process of the SR-PEH, circuit, and sensor is stated; and the changing trend of the output power density is explained from an energy perspective. In the logarithmic coordinate system, the results indicate that the output voltage and output power are approximately linear with the temperature when the resistance is constant. In addition, the growth rate of the output voltage and output power decreases with an increase of resistance under the condition of constant temperature. In addition, with an increase of temperature, the growth rate of the output power is faster than that of the output voltage. Furthermore, resistance has a more dramatic effect on the output voltage, whereas temperature has a more significant effect on the output power. More importantly, the comparison with the conventional cantilever-shaped piezoelectric energy harvester (CC-PEH) shows that the SR-PEH can improve the output performance and broaden the frequency band. View Full-Text
Keywords: piezoelectric energy harvester; temperature gradient; piezoelectric performance piezoelectric energy harvester; temperature gradient; piezoelectric performance
Show Figures

Figure 1

MDPI and ACS Style

Zhou, N.; Li, R.; Ao, H.; Zhang, C.; Jiang, H. Piezoelectric Performance of a Symmetrical Ring-Shaped Piezoelectric Energy Harvester Using PZT-5H under a Temperature Gradient. Micromachines 2020, 11, 640.

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
Search more from Scilit
 
Search
Back to TopTop