Inductorless Synchronized Switch Harvesting Using a Piezoelectric Oscillator
| Autor: | Sheng-Wei Hung, Linjuan Yan, Mickaël Lallart, Wen-Jong Wu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Vibrational energy Integrable system 020208 electrical & electronic engineering Inversion (meteorology) 02 engineering and technology Piezoelectricity Inductance 0202 electrical engineering electronic engineering information engineering Electronic engineering Switched capacitance Electrical and Electronic Engineering Energy harvesting Voltage |
| Zdroj: | IEEE Transactions on Power Electronics. 35:2585-2594 |
| ISSN: | 1941-0107 0885-8993 |
| DOI: | 10.1109/tpel.2019.2925709 |
| Popis: | This paper proposes a preliminary investigation of a voltage inversion technique for enhancing the conversion abilities and power output of piezoelectric energy harvesting systems without requiring any inductance. Based on the use of an additional, decoupled high-frequency piezoelectric oscillator that is intermittently switched on the main harvesting piezoelectric element, the proposed scheme allows obtaining an inversion effect up to 30% experimentally (and possibly much higher) in an inductorless fashion. Such a concept is both discussed and validated theoretically and experimentally. Applied to energy harvesting, this provides an experimental gain of 30% in terms of harvested power compared to short-circuit switching. Also, the proposed scheme can be implemented in a single stage using off-the-shelf components (although being possibly integrated as well), while providing a better management of the charge transfer compared to pure switched capacitance approach, thanks to the motional branch of the oscillator. This therefore enables low-cost, integrable power boosting techniques for piezoelectric vibrational energy harvesters. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|