2024, Vol. 5, Issue 2, Part A
Dynamic voltage control in piezoelectric energy harvesting systems via self-powered h-bridge rectifiers
Author(s): Aibek Toktogulov and Meerim Dzhunusova
Abstract: Piezoelectric energy harvesting offers a sustainable solution for powering low-power electronics by converting mechanical energy into electrical energy. However, conventional rectification methods, such as diode bridge rectifiers, suffer from energy losses and voltage instability, limiting their efficiency and applicability. This study aims to address these limitations by integrating a self-powered H-bridge rectifier with dynamic voltage control in a piezoelectric energy harvesting system. The primary objective was to enhance energy conversion efficiency, stabilize voltage output, and improve power output under varying mechanical input conditions. The experimental setup included Lead Zirconate Titanate (PZT) plates as piezoelectric materials, a mechanical shaker for controlled vibration inputs, and a microcontroller programmed with an adaptive control algorithm for real-time voltage regulation. The performance of the H-bridge rectifier was compared with a conventional diode bridge rectifier in terms of efficiency, stability, and power output across a range of frequencies (10-200 Hz) and vibration amplitudes (0.5-2.0 mm). Long-term stability testing was also conducted to evaluate the system's durability. The results showed that the H-bridge rectifier achieved an average 15.6% increase in energy conversion efficiency compared to the diode bridge rectifier, with consistent voltage stability (±2%) and higher power output (26.7 mW at 2.0 mm amplitude). The system demonstrated robust performance under continuous operation for 24 hours, highlighting its potential for real-world applications. These findings emphasize the transformative impact of dynamic voltage control on piezoelectric energy harvesting, paving the way for efficient and reliable power solutions for IoT devices and other low-power applications. In conclusion, the integration of a self-powered H-bridge rectifier with dynamic voltage control significantly enhances the performance of piezoelectric energy harvesting systems, offering a sustainable alternative to conventional power sources.
DOI: 10.22271/27084531.2024.v5.i2a.76
Pages: 51-56 | Views: 58 | Downloads: 20
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How to cite this article:
Aibek Toktogulov, Meerim Dzhunusova. Dynamic voltage control in piezoelectric energy harvesting systems via self-powered h-bridge rectifiers. Int J Res Circuits Devices Syst 2024;5(2):51-56. DOI: 10.22271/27084531.2024.v5.i2a.76
