Online Condition Monitoring of Rotating Machines by Self-Powered Piezoelectric Transducer from Real-Time Experimental Investigations

Abstract

This paper investigates self-powering online condition monitoring for rotating machines by the piezoelectric transducer as an energy harvester and sensor. The method is devised for real-time working motors and relies on self-powered wireless data transfer where the data comes from the piezoelectric transducer’s output. Energy harvesting by Piezoceramic is studied under real-time motor excitations, followed by power optimization schemes. The maximum power and root mean square power generation from the motor excitation are 13.43 mW/g2 and 5.9 mW/g2, which can be enough for providing autonomous wireless data transfer. The piezoelectric transducer sensitivity to the fault is experimentally investigated, showing the considerable fault sensitivity of piezoelectric transducer output to the fault. For instance, the piezoelectric transducer output under a shaft-misalignment fault is more than 200% higher than the healthy working conditions. This outcome indicates that the monitoring of rotating machines can be achieved by using a self-powered system of the piezoelectric harvesters. Finally, a discussion on the feasible self-powered online condition monitoring is presented.

High inverse piezoelectric coefficient achieved in Sr2+‐doped KNN‐based lead‐free piezoceramics

“…[1][2][3] For example, sensors, actuators, and energy harvesters based on piezoelectric materials are becoming increasingly important for online monitoring, troubleshooting, transformer noise reduction, and wireless sensor networks, especially with the expansion of grid-scale and the development of smart grids. [4][5][6][7][8] However, it is important to note that the current market is dominated by piezoelectric ceramics containing lead, such as PZT ceramics. The use of lead in the manufacture and disposal of these ceramics can hurt the environment and pose health risks to humans due to its toxicity.…”

“…These materials have unique properties that allow them to couple mechanical and electrical energy, making them useful in various industries such as energy, communication, medical, and military 1–3 . For example, sensors, actuators, and energy harvesters based on piezoelectric materials are becoming increasingly important for online monitoring, troubleshooting, transformer noise reduction, and wireless sensor networks, especially with the expansion of grid‐scale and the development of smart grids 4–8 . However, it is important to note that the current market is dominated by piezoelectric ceramics containing lead, such as PZT ceramics.…”

An Impact-Based Piezoelectric Energy Harvester Utilizing Spherical Mass Collision Phenomenon

“…Advancements in electronic technology have reduced energy consumption for electronic devices, allowing energy harvesting methods from environmental sources to supply lowpowered devices in remote and inaccessible areas, rather than relying on traditional batteries [1]. Mechanical vibration has emerged as a promising and sustainable energy source among possible energy harvesting sources due to its widespread availability in different environments and ease of system integration [2]. As a result, a range of mechanical vibration-based approaches has been proposed, electromagnetics [3], triboelectric [4], and piezoelectric [5], to name a few.…”

High-Level Vibration for Single-Frequency and Multi-Frequency Excitation in Macro-Composite Piezoelectric (MFC) Energy Harvesters, Nonlinearity, and Higher Harmonics

“…Piezoelectric materials with electrical-to-mechanical conversion abilities are alternatives to power electronic devices, as they utilise the often-wasted electrical energy. Piezoelectric Vibration Energy Harvesting (PVEH) has found industrial [ 1 ] and bio-related [ 2 ] applications. By moving toward self-powered electronics with PVEH, electronic devices and biomedical sensors/actuators can be installed in inaccessible areas, such as in vivo or remote areas, using the often-wasted available energy [ 3 ].…”