- Titel
- A Self-Start-Up AC/DC Boost Converter for Electromagnetic Energy Harvesting in Wireless Sensor Applications
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:ch1-qucosa2-1014963
- Schriftenreihe
- Scientific Reports on Measurement and Sensor Technology
- Bandnummer
- Volume 39
- Datum der Einreichung
- 13.10.2025
- Datum der Verteidigung
- 16.12.2025
- ISBN
- 978-3-96100-304-4
- E-ISBN
- 978-3-96100-305-1
- E-ISSN
- 2509-5110
- ISSN
- 2509-5102
- DOI
- https://doi.org/10.51382/978-3-96100-305-1
- Abstract (EN)
- Electromagnetic energy harvesting-powered wireless sensors must operate with ultra-low power, remain functional under low vibrations, and autonomously restart after long energy interruptions. However, most systems are inefficient, need dedicated start-up and complex gate drivers, often need up to 5 V supply, and rarely report restart time after unpowered phases. This thesis proposes two self-powered AC/DC boost converters that start from zero voltage under ultra-low excitation without dedicated start-up circuits. A passive multi-stage voltage multiplier (VM) is integrated in the rectification stage to fast reach the 1.6 V threshold, while the harvester inductance is used as the boost element. The converters operate in start-up and boost modes using two validated topologies: bidirectional and parallel. Both use a three-stage VM; the bidirectional blocks reverse conduction, while the parallel reduces conduction losses. Boost-mode experiments show efficiency and charging speed strongly depend on switching frequency and duty cycle, with optimal performance at 32 kHz. At 0.22g and 29Hz with a 47mF supercapacitor, the bidirectional converter performs best at 78% duty cycle and the parallel at 68.4%. Both start autonomously from 0.65V and reach 1.6V within 20s. In boost mode, the bidirectional topology delivers 4.16V, 1.2mW, 72% efficiency, while the parallel topology reaches 5V, 1.84mW, and 79.2% efficiency, enabling reliable restart and long-term autonomous wireless sensing.
- Freie Schlagwörter (EN)
- Self-start-up from zero voltage, AC/DC boost converter, electromagnetic energy harvesting
- Klassifikation (DDC)
- 600
- 620
- 629
- Normschlagwörter (GND)
- Energy Harvesting, Energiespeicherung, Drahtloses Sensorsystem
- GutachterIn
- Prof. Dr. Olfa Kanoun
- Prof. Dr. Carlo Trigona
- BetreuerIn Hochschule / Universität
- Prof. Dr. Olfa Kanoun
- Verlag
- Universitätsverlag Chemnitz, Chemnitz
- Den akademischen Grad verleihende / prüfende Institution
- Technische Universität Chemnitz, Chemnitz
- Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:ch1-qucosa2-1014963
- Veröffentlichungsdatum Qucosa
- 19.03.2026
- Dokumenttyp
- Dissertation
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis
CC BY 4.0- Inhaltsverzeichnis
1. Introduction 2. Theoretical Background 3. Energy Management Circuits 4. Novel Self-Start-Up AC/DC Boost Converter 5. Experimental Investigations 6. Conclusion