TOPOLOGY AND CONFIGURATION SELECTION FOR
DC/DC CONVERTERS IN SPACE ELECTRICAL
POWER SYSTEMS BASED ON COMPARATIVE
EEIEJ. Emerging Trends in Electrical, Electronics & Instrumentation Engineering: An international Journal2 (1):
Selection of DC/DC converter topology is one of the most challenging aspects in space Electrical Power
Systems (EPS) design and development. It both highly, affects and is affected from EPS reliability
requirements among the other EPS performance specifications. So ranking of DC/DC converters based on
End-Of-Life (EOL) reliability is an undeniable need.
In this paper, reliability of four DC/DC converters including buck, forward, fly-back, and Push-pull, as
candidates for a 5-years-long, Low-Earth-Orbit (LEO) space mission, are evaluated and compared.
Converters are assumed having similar design requirements and supervision and control elements with
different power conversion parts and negligible reliability-affecting excess circuits.