Many future satellites and spacecraft with spun and despun configurations will require the transfer of power across rotating interfaces in lieu of slip-rings and or flexures. This is particularly true of spacecraft that have to demonstrate a long life expectancy. The rotary transformer has the desirable characteristics of high reliability and low noise, which qualify it as a potential replacement for slip rings. Development of a rotary power transformer follows the successful completion of a task to develop rotary signal-level transformers for the Galileo Spacecraft Project. The physical configuration of a rotary power transformer has a significant effect on its magnetic and electrical characteristics and therefore impacts the design of the DC/AC inverter driver. Important characteristics addressed during this development effort includes: operating frequency, efficiency, transformer gap size, leakage inductance, and leakage flux. A breadboard inverter and rotary transformer were designed, fabricated and tested.
Development of a rotary power transformer and inverter drive for Spacecraft
Rotierender 20 kHz 1 kW Transformator zur kontaktlosen Kraft- und Signaluebertragung im Satelliten
1983
4 Seiten, 6 Bilder, 2 Tabellen, 4 Quellen
Conference paper
English
Rotary Power Transformer and Inverter Circuit
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