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Heat pipe cooling of power processing magneticsThe constant demand for increased power and reduced mass has raised the internal temperature of conventionally cooled power magnetics toward the upper limit of acceptability. The conflicting demands of electrical isolation, mechanical integrity, and thermal conductivity preclude significant further advancements using conventional approaches. However, the size and mass of multikilowatt power processing systems may be further reduced by the incorporation of heat pipe cooling directly into the power magnetics. Additionally, by maintaining lower more constant temperatures, the life and reliability of the magnetic devices will be improved. A heat pipe cooled transformer and input filter have been developed for the 2.4 kW beam supply of a 30-cm ion thruster system. This development yielded a mass reduction of 40% (1.76 kg) and lower mean winding temperature (20 C lower). While these improvements are significant, preliminary designs predict even greater benefits to be realized at higher power. This paper presents the design details along with the results of thermal vacuum operation and the component performance in a 3 kW breadboard power processor.
Document ID
19800036790
Document Type
Conference Paper
Authors
Hansen, I. G. (NASA Lewis Research Center Cleveland, Ohio, United States)
Chester, M. (TRW, Inc. Redondo Beach, Calif., United States)
Date Acquired
August 10, 2013
Publication Date
October 1, 1979
Subject Category
FLUID MECHANICS AND HEAT TRANSFER
Report/Patent Number
AIAA PAPER 79-2082
Meeting Information
International Electric Propulsion Conference(Princeton, NJ)
Distribution Limits
Public
Copyright
Other