Radioisotope energy conversion using electrostatic vibrationto–to–electricity converters | Zendy

Wang Xiang | Zendy; Qiang Zhang | Zendy; Ranbin Chen | Zendy; Deng Zhi-Qiang | Zendy; San Hai-Sheng | Zendy

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Radioisotope energy conversion using electrostatic vibrationto–to–electricity converters

Author(s) -

Wang Xiang,

Qiang Zhang,

Ranbin Chen,

Deng Zhi-Qiang,

San Hai-Sheng

Publication year - 2014

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.63.028501

Subject(s) - vibration , electricity , converters , power (physics) , matlab , energy conversion efficiency , electricity generation , capacitance , energy transformation , computer science , electrical engineering , electric potential energy , energy (signal processing) , materials science , automotive engineering , acoustics , physics , electrode , engineering , quantum mechanics , thermodynamics , operating system

Wireless sensor nodes deployed at remote and inaccessible locations need long lifetime power sources to prevent cost prohibitive periodic replacement. In this work, we present a radioisotope 63Ni energy converter using radioisotope-powered electrostatic vibration-to-electricity conversion. Free damped vibration happening in a suspended parallel plate structure with a mass enables a variable capacitance, which can be used to realize the generation of electricity energy by an external circuit. The MATLAB/Simulink is used to simulate the vibration and output power, and the Ansys is used to optimize the structure design. The results show that the optimized design structure with a first-order natural frequency of 500 Hz, a plate gap of 75 μm, and an external resistance of 90 kΩ can generate an average output power of 0.416 μW and conversion efficiency of 8.25%.

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