Fabrication of Wound Capacitors Using Flexible Alkali-Free Glass
| Autor: | Raegan L. Johnson-Wilke, Rudeger H. T. Wilke, Chad Hettler, Takashi Murata, Steve Perini, Patrick D. O'Malley, Michael T. Lanagan, Amanda Baker, Harlan James Brown-Shaklee |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Electrolytic capacitor Materials science Fabrication business.industry Nanotechnology 02 engineering and technology Dielectric Pulsed power 021001 nanoscience & nanotechnology 01 natural sciences Capacitance Industrial and Manufacturing Engineering Electronic Optical and Magnetic Materials law.invention Microsecond Capacitor Film capacitor law 0103 physical sciences Optoelectronics Electrical and Electronic Engineering 0210 nano-technology business |
| Zdroj: | IEEE Transactions on Components, Packaging and Manufacturing Technology. 6:1555-1560 |
| ISSN: | 2156-3985 2156-3950 |
| Popis: | Alkali-free glasses, which exhibit high energy storage densities ( $\sim 35$ J/cc), present a unique opportunity to couple high temperature stability with high breakdown strength, and thus provide an avenue for capacitor applications with stringent temperature and power requirements. Realizing the potential of these materials in kilovolt class capacitors with >1 J/cc recoverable energy density requires novel packaging strategies that incorporate these extremely fragile dielectrics. In this paper, we demonstrate the feasibility of fabricating wound capacitors using 50- $\mu \text{m}$ -thick glass. Two capacitors were fabricated from 2.8-m-long ribbons of thin (50 $\mu \text{m}$ ) glass wound into 125–140-mm-diameter spools. The capacitors exhibit a capacitance of 70–75 nF with loss tangents below 1%. The wound capacitors can operate up to 1 kV and show excellent temperature stability to 150 °C. By improving the end terminations, the self-resonance can be shifted to above 1 MHz, indicating that these materials may be useful for pulsed power applications with microsecond discharge times. |
| Databáze: | OpenAIRE |
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