| Autor: |
Seungbum Hong, Kwangsoo No, Kim Yeon Tae, Dong Jin Kim, Hee Seok Roh |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
RSC Advances. 5:10662-10666 |
| ISSN: |
2046-2069 |
| DOI: |
10.1039/c4ra16443a |
| Popis: |
Here we present a high performance spring-type piezoelectric energy harvester that selectively collects current from the inner part of a spring shell. We analyzed the main reason behind the low efficiency of the initial design using finite element models and proposed a selective current collecting design that can considerably improve the electrical conversion efficiency of the energy harvester. We found that the newly designed energy harvester increases the output voltage by 8 times leading to an output power of 2.21 μW under an impulsive load of 2.18 N when compared with the conventional design. We envision that selective current collecting design will be used in spring-based self-powered active sensors and energy scavenging devices. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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