TY - GEN
T1 - Vibration energy harvesting by Magnetostrictive material (MsM) for powering wireless sensors
AU - Wang, L.
AU - Yuan, F. G.
PY - 2007
Y1 - 2007
N2 - A new class of vibration energy harvester based on Magnetostrictive material (MsM), Metglas 2605SC, is deigned, developed, and tested. Compared to piezoelectric materials, Metglas offers advantages including ultra-high conversion efficiency, semi-permanent life-cycles without depolarization, and high flexibility to survive in strong ambient vibrations. To enhance conversion efficiency and alleviate the need of bias magnetic field, Metglas ribbons are transversely annealed by a strong magnetic field along the width direction. Governing equations are derived from Hamilton's Principle in conjunction with normal mode superposition method. The MsM harvesting device is equivalent to an electro-mechanical gyrator in series with an inductor. The energy harvesting circuit, which interfaces with a wireless sensor and accumulates the harvested energy, is designed on a printed circuit board (PCB) with plane dimension 25mm×35mm. It mainly consists of a voltage quadruples a 3 F ultracapacitor, and a smart regulator. The output DC voltage from the PCB can be adjusted within 2.0∼5.5V. In experiments, the maximum output power and power density on the resistor can reach 200 μW and 900 μW/cm3, respectively. For a working prototype, the average power and power density during charging the ultracapacitor can achieve 576 μW and 606 μW/cm3 respectively, which compete favorably with the piezoelectric vibration energy harvesters.
AB - A new class of vibration energy harvester based on Magnetostrictive material (MsM), Metglas 2605SC, is deigned, developed, and tested. Compared to piezoelectric materials, Metglas offers advantages including ultra-high conversion efficiency, semi-permanent life-cycles without depolarization, and high flexibility to survive in strong ambient vibrations. To enhance conversion efficiency and alleviate the need of bias magnetic field, Metglas ribbons are transversely annealed by a strong magnetic field along the width direction. Governing equations are derived from Hamilton's Principle in conjunction with normal mode superposition method. The MsM harvesting device is equivalent to an electro-mechanical gyrator in series with an inductor. The energy harvesting circuit, which interfaces with a wireless sensor and accumulates the harvested energy, is designed on a printed circuit board (PCB) with plane dimension 25mm×35mm. It mainly consists of a voltage quadruples a 3 F ultracapacitor, and a smart regulator. The output DC voltage from the PCB can be adjusted within 2.0∼5.5V. In experiments, the maximum output power and power density on the resistor can reach 200 μW and 900 μW/cm3, respectively. For a working prototype, the average power and power density during charging the ultracapacitor can achieve 576 μW and 606 μW/cm3 respectively, which compete favorably with the piezoelectric vibration energy harvesters.
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M3 - Conference contribution
AN - SCOPUS:84945185188
T3 - Structural Health Monitoring 2007: Quantification, Validation, and Implementation - Proceedings of the 6th International Workshop on Structural Health Monitoring, IWSHM 2007
SP - 1757
EP - 1764
BT - Structural Health Monitoring 2007
A2 - Chang, Fu-Kuo
PB - DEStech Publications
T2 - 6th International Workshop on Structural Health Monitoring: Quantification, Validation, and Implementation, IWSHM 2007
Y2 - 11 September 2007 through 13 September 2007
ER -