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HOLLOTRON switch for megawatt lightweight space invertersThe feasibility of satisfying the switching requirements for a megawatt ultralight inverter system using HOLLOTRON switch technology was determined. The existing experimental switch hardware was modified to investigate a coaxial HOLLOTRON switch configuration and the results were compared with those obtained for a modified linear HOLLOTRON configuration. It was concluded that scaling the HOLLOTRON switch to the current and voltage specifications required for a megawatt converter system is indeed feasible using a modified linear configuration. The experimental HOLLOTRON switch operated at parameters comparable to the scaled coaxial HOLLOTRON. However, the linear HOLLOTRON data verified the capability for meeting all the design objectives simultaneously including current density (greater than 2 A/sq cm), voltage (5 kV), switching frequency (20 kHz), switching time (300 ns), and forward voltage drop (less than or equal to 20 V). Scaling relations were determined and a preliminary design was completed for an engineering model linear HOLLOTRON switch to meet the megawatt converter system specifications.
Document ID
19910013189
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Poeschel, R. L.
(Hughes Research Labs. Malibu, CA, United States)
Goebel, D. M.
(Hughes Research Labs. Malibu, CA, United States)
Schumacher, R. W.
(Hughes Research Labs. Malibu, CA, United States)
Date Acquired
September 6, 2013
Publication Date
March 1, 1991
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
NAS 1.26:187083
NASA-CR-187083
Accession Number
91N22502
Funding Number(s)
CONTRACT_GRANT: NAS3-25802
PROJECT: RTOP 506-41-3F
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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