Thesis
Development of Self-Powered Boost Converter circuits for Enhancing the Efficiency of Piezoelectric Energy-Harvesting Systems
Southern Cross University
Master of Engineering (ME), Southern Cross University
2022
DOI:
https://doi.org/10.25918/thesis.287
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Abstract
The most straight-forwarded way of converting the AC into DC is by a full bridge rectifier (FBR) circuit. However, the FBR circuit has low output voltage and power due to forward-biased voltage losses across diodes and the rectified voltage output is unstable due to ripples. Therefore, besides enhancing the efficiency of PEH systems, this study will focus on the following methodologies: (1) minimising the forward voltage drop losses, (2) enhancing the low AC voltage from PD into a higher DC voltage at both low and high frequencies, (3) stabilising the rectified DC voltage waveform by reducing ripples.
To achieve the abovementioned methods, several improved and novel circuits are proposed in this thesis, including (1) a self-powered dual stage boost converter (DSBC) circuit for PEH systems to minimise the diode forward voltage losses and boost the low AC voltage to high DC voltage. Besides, (2) a voltage doubler boost converter (VDBC) circuit for PEH systems to generate a stable DC voltage at output. In addition, the ability of the VDBC circuit to charge a solar battery was also investigated.
The outcome of this study showed that (1) by using a DSBC circuit, 3.61 mW output power was achieved with an input voltage of 3 Vac; (2) and secondly, by using a VDBC circuit, a maximum output voltage and output power of 11.7 Vdc and 1.368 mW was achieved with a 5Vac input voltage.
Application-wise, the proposed VDBC circuit can charge a battery (1.2 Vdc, 4 mA) commonly used in solar garden lights. These advancements can contribute to the improvement in the future of PEH systems.
Details
- Title
- Development of Self-Powered Boost Converter circuits for Enhancing the Efficiency of Piezoelectric Energy-Harvesting Systems
- Creators
- Abdul Haseeb
- Contributors
- Mustafa Ucgul (Supervisor) - Southern Cross UniversityFendy Santoso (Supervisor) - Southern Cross UniversityMahesh Edla (Supervisor) - Southern Cross University
- Awarding Institution
- Southern Cross University; Master of Engineering (ME)
- Theses
- Master of Engineering (ME), Southern Cross University
- Publisher
- Southern Cross University
- Number of pages
- 114
- Identifiers
- 991013128113802368
- Copyright
- © A Haseeb 2022
- Academic Unit
- Faculty of Science and Engineering
- Resource Type
- Thesis