Increasing the Efficiency and Reliability of the High-Power Supply ‎with the Application of TWTA Lamps

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Mohammadi Payman; Alemi Rostami Mehdi

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Journal Paper

Paper Information

Journal: Journal of Space Science and Technology Year:2024 | Volume:17 | Issue:1 (پیاپی 60) Page(s): 37-48

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Title

Increasing the Efficiency and Reliability of the High-Power Supply ‎with the Application of TWTA Lamps

Author(s)

Mohammadi Payman | Alemi Rostami Mehdi | Issue Writer Certificate

Keywords

High voltage DC converterQ4

ReliabilityQ4

EfficiencyQ4

Genetic AlgorithmQ4

Markov modelQ4

klystron lampsQ4

Abstract

Achieving low ripple, high Efficiency, high Reliability, and optimal volume and weight are crucial in the power supply of traveling-wave-tube amplifier (TWTA) lamps in satellites. This article focuses on optimizing the Efficiency and Reliability of high-voltage DC/DC electronic power converters for use in satellite and TWTA systems. The optimization goal, using the multi-objective Genetic Algorithm NSGA-II, is to minimize the objective function, encompassing both Efficiency and Reliability. Reliability is assessed through a Markov model, which considers short-circuit and open-circuit failures in circuit switches and diodes, as well as short-circuit failures in passive circuit elements. The optimization process begins with defining the input variables for the algorithm. Sensitivity analysis is utilized to eliminate parameters with low sensitivity whose variations do not significantly impact the objective function. Parameters for the NSGA-II algorithm, including the number of iterations, population size, and probabilities of crossover and mutation, are precisely determined to ensure accurate computation of circuit variables. The results demonstrate that this method achieves high Reliability alongside high Efficiency through the optimal selection of circuit components, ensuring the converter's effectiveness for application in satellite systems.

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