Extracting best reliable scheme for Electrical Power Subsystem (EPS) of satellite

Abstract

This paper describes the reliability comparison of different schemes connection for Electrical Power Subsystem (EPS) of satellite. EPS has to be able to provide sufficient power to the satellite subsystems under all possible satellite attitudes. There are eight schemes for EPS, which could be used for power supplying. In these schemes, two main system groups are Peak Power Tracking (PPT) and Direct Energy Transfer (DET) systems. Also in each system, we have four different connections which are Unregulated Bus Using Parallel Batteries, Unregulated Bus Using Linear Charge Current Control Recharge Control, Quasi-Regulated Bus with Constant Current Chargers and Systems Using a Fully Regulated Bus. In this paper we will compare the reliability of different schemes and will introduce the best reliable connection in these two systems for ESP.

Análise E Projeto De Um Subsistema Elétrico De Potência Distribuído De Arquitetura Empilhada Para Cubesat

“…Os EPS's de arquitetura distribuída possuem quatro blocos funcionais básicos, conforme pode ser visualizado na Figura 2 (f): fonte primária; fonte secundária; sistema de distribuição de energia; e sistema de regulação e controle de potência [5]. A fonte primária usualmente é composta de um arranjo fotovoltaico (FV), que converte a radiação solar em energia elétrica.…”

“…O EPS, também, armazena energia para os períodos de pico de demanda ou para operação no período de eclipse. Os EPS's podem ser classificados com relação à distribuição de energia em: arquitetura concentrada e distribuída [5], [6]. A Figura 1 (a) representa um sistema centralizado, com múltiplas saídas independentes, onde a energia de cada fonte independente já está condicionada para uso de cada um dos subsistemas do CubeSat.…”

EMI consideration of high reliability electrical power subsystem (EPS) of satellite

“…In [15], reliability of eight power regulation topologies is evaluated based on failure rate of equipment. For example, the reliability of a single item, not subject to wear out failures can be seen in (1).…”

Comparing the topologies of satellite electrical power subsystem based on system level specifications

“…Fig.3. Series and parallel Reliability Models, is the system reliability , and denote the reliability of the A, B and C components [6] The details of reliability calculations for each of the topologies have been explained step by step in [7], and the final results are shown here in TABLE VIII. As we can see in the table, "Semi Regulated -DET" topology has the best reliability among the studied topologies.…”