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Resistojet control and power for high frequency ac busesResistojets are operational on many geosynchronous communication satellites which all use dc power buses. Multipropellant resistojets were selected for the Initial Operating Capability (IOC) Space Station which will supply 208 V, 20 kHz power. This paper discusses resistojet heater temperature controllers and passive power regulation methods for ac power systems. A simple passive power regulation method suitable for use with regulated sinusoidal or square wave power was designed and tested using the Space Station multipropellant resistojet. The breadboard delivered 20 kHz power to the resistojet heater. Cold start surge current limiting, a power efficiency of 95 percent, and power regulation of better than 2 percent were demonstrated with a two component, 500 W breadboard power controller having a mass of 0.6 kg.
Document ID
19870053829
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Gruber, Robert P.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 13, 2013
Publication Date
May 1, 1987
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
AIAA PAPER 87-0994
Accession Number
87A41103
Distribution Limits
Public
Copyright
Other

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