Multi-diode converter feasibility experiments

Gabor Miskolczy, Peter Reagan, David P. Lieb, Michael Schuller

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Major handicaps to the use of thermionic diodes are their low voltage, high current output characteristics. The typical performance of a state-of-the-art thermionic diode is approximately 0.5 V at 15 A/cm2 regardless of size or geometry. If a compact series combination of thermionic diodes could be fabricated to produce a higher output voltage, the total weight could be reduced and system efficiency improved. In this program the feasibility of constructing a cylindrical thermionic device consisting of a series/parallel combination of small area diodes with a common plasma in a single envelope was demonstrated. Both emitter and collector cylinders were fabricated by outside diameter Chemical Vapor Deposition (CVD) of silicon carbide (Sic) and tungsten (W) on graphite mandrels. The collector was thermally cycled to 1400° C in vacuum four times and remained intact. The resistivity of the Sic was measured from room temperature to 1200° C and found to be sufficient to operate a series/ parallel connection of diodes. No significant reaction was observed with the emitter or W at 1200° C during a 1200 hour life test in a Cs vapor pressure of 2 torr.

Original languageEnglish
Title of host publicationIntersociety Energy Conversion Engineering Conference, 1994
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Pages1049-1054
Number of pages6
Publication statusPublished - 1994
Externally publishedYes
EventIntersociety Energy Conversion Engineering Conference, 1994 - Monterey, United States
Duration: 7 Aug 199412 Aug 1994

Other

OtherIntersociety Energy Conversion Engineering Conference, 1994
CountryUnited States
CityMonterey
Period7/8/9412/8/94

Fingerprint

Diodes
Silicon carbide
Experiments
Electric potential
Vapor pressure
Tungsten
Chemical vapor deposition
Graphite
Vacuum
Plasmas
Geometry
Temperature

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Electrical and Electronic Engineering

Cite this

Miskolczy, G., Reagan, P., Lieb, D. P., & Schuller, M. (1994). Multi-diode converter feasibility experiments. In Intersociety Energy Conversion Engineering Conference, 1994 (pp. 1049-1054). [AAIA-94-4208-CP] American Institute of Aeronautics and Astronautics Inc, AIAA.

Multi-diode converter feasibility experiments. / Miskolczy, Gabor; Reagan, Peter; Lieb, David P.; Schuller, Michael.

Intersociety Energy Conversion Engineering Conference, 1994. American Institute of Aeronautics and Astronautics Inc, AIAA, 1994. p. 1049-1054 AAIA-94-4208-CP.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Miskolczy, G, Reagan, P, Lieb, DP & Schuller, M 1994, Multi-diode converter feasibility experiments. in Intersociety Energy Conversion Engineering Conference, 1994., AAIA-94-4208-CP, American Institute of Aeronautics and Astronautics Inc, AIAA, pp. 1049-1054, Intersociety Energy Conversion Engineering Conference, 1994, Monterey, United States, 7/8/94.
Miskolczy G, Reagan P, Lieb DP, Schuller M. Multi-diode converter feasibility experiments. In Intersociety Energy Conversion Engineering Conference, 1994. American Institute of Aeronautics and Astronautics Inc, AIAA. 1994. p. 1049-1054. AAIA-94-4208-CP
Miskolczy, Gabor ; Reagan, Peter ; Lieb, David P. ; Schuller, Michael. / Multi-diode converter feasibility experiments. Intersociety Energy Conversion Engineering Conference, 1994. American Institute of Aeronautics and Astronautics Inc, AIAA, 1994. pp. 1049-1054
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