타원형 압전 에너지 하베스터의 기계적 모델링 연구
Study of Mechanical Modeling of Oval-shaped Piezoelectric Energy Harvester
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Energy harvesting is an advantageous technology for wireless sensor networks (WSNs) that dispenses with the need for periodic replacement of batteries. WSNs are composed of numerous sensors for the collection of data and communication;hence, they are important in the Internet of Things (IoT). However, due to low power generation and energy conversion effi-ciency, harvesting technologies have so far been utilized in limited applications. In this study, a piezoelectric energy har- vester was modeled in a vibration environment. This harvester has an oval-shaped configuration as compared to the conventional cantilever-type piezoelectric energy harvester. An analytical model based on an equivalent circuit was devel- oped to appraise the advantages of the oval-shaped piezoelectric energy harvester in which several structural parameters were optimized for higher output performance in given vibration environments. As a result, an oval-shaped energy harvester with an average output power of 2.58 mW at 0.5 g and 60 Hz vibration conditions was developed. These technical approaches provided an opportunity to appreciate the significance of autonomous sensor networks.
Abstract
Energy harvesting is an advantageous technology for wireless sensor networks (WSNs) that dispenses with the need for periodic replacement of batteries. WSNs are composed of numerous sensors for the collection of data and communication;hence, they are important in the Internet of Things (IoT). However, due to low power generation and energy conversion effi-ciency, harvesting technologies have so far been utilized in limited applications. In this study, a piezoelectric energy har- vester was modeled in a vibration environment. This harvester has an oval-shaped configuration as compared to the conventional cantilever-type piezoelectric energy harvester. An analytical model based on an equivalent circuit was devel- oped to appraise the advantages of the oval-shaped piezoelectric energy harvester in which several structural parameters were optimized for higher output performance in given vibration environments. As a result, an oval-shaped energy harvester with an average output power of 2.58 mW at 0.5 g and 60 Hz vibration conditions was developed. These technical approaches provided an opportunity to appreciate the significance of autonomous sensor networks.
참고문헌 (9)
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