Enhancement of harvesting capability of coupled nonlinear energy harvesters through high energy orbits
Artykuł w czasopiśmie
MNiSW
70
Lista 2021
| Status: | |
| Autorzy: | Malaji P. V., Friswell Michael I., Sondipon Adhikari, Litak Grzegorz |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2020 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | 8 |
| Wolumen/Tom: | 10 |
| Numer artykułu: | 085315 |
| Strony: | 1 - 6 |
| Impact Factor: | 1,548 |
| Web of Science® Times Cited: | 9 |
| Scopus® Cytowania: | 11 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | TAK |
| Licencja: | |
| Sposób udostępnienia: | Witryna wydawcy |
| Wersja tekstu: | Ostateczna wersja opublikowana |
| Czas opublikowania: | W momencie opublikowania |
| Data opublikowania w OA: | 11 sierpnia 2020 |
| Abstrakty: | angielski |
| Mechanical coupling in similar energy harvesters has the potential to enhance their broadband harvesting capability. However, often theperformance of one harvester dominates the other, and the coupling transfers energy from the high frequency harvester to the low frequencyharvester, thus reducing the capability of the high frequency harvester. Hence, researchers have proposed using the high frequency harvesteronly as an auxiliary oscillator to save the material cost. This paper investigates the possibility of enhancing the energy harvesting capability ofboth coupled harvesters. A torsionally coupled electromagnetic pendulum harvester system is considered, which is suitable for low frequency(<5 Hz) applications. The harmonic balance method is used to identify possible multiple solutions, and high magnitude solutions are observedto coexist with low magnitude solutions. These high energy solutions, which are often missed in the numerical simulation, can be attained bya careful choice of initial conditions or energy input. The simulation results show that more energy can be harvested over a wider range offrequencies by ensuring that the response occurs in the high energy orbits. The results show an enhancement of the bandwidth by 54% and140% for the low and high frequency harvesters, respectively, with the optimum initial conditions. Moreover, an isolated frequency island isreported, which occurs due to the coupling of the nonlinear harvesters. |
