Design and testing of spacecraft power systems using VTB

Jiang, Zhenhua; S, Liu; Dougal, Roger A.

doi:10.1109/taes.2003.1238750

Cited by 25 publications

(3 citation statements)

References 28 publications

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“…This type test has the disadvantage of less flexibility, expensive cost and hard to be involved into system integration test associating with the whole satellite [5]. Lots of foreign researchers also set up the model and simulate PCU considering several factors by utilizing software, for instance, SPACE [6,7] and VTB [8] etc. But there are so many factors which influence the working of PCU, so this method is very complex.…”

Section: Introductionmentioning

confidence: 99%

Research on Semi Physical Test System of PCU on Satellite

Sun

Cai

2011

AMR

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Power control unit (PCU) is an important component of space power system on satellite; it provides power supply to main bus and regulates output status of solar battery array in light district. So it is very important to test the performance of PCU before equipped in satellite. A semi physical test system for PCU is developed in this paper, some Agilent simulators are used to simulate working environment of PCU, and control software is programmed to control these simulator as well.

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Section: Introductionmentioning

confidence: 99%

Research on Semi Physical Test System of PCU on Satellite

Sun

Cai

2011

AMR

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“…Therefore, it is important for the electrical power system (EPS) to be designed with minimum power sizing in order to secure the energy balance according to the system's requirements (Patel 2005). For the optimization of the system architecture, the component choices, and the system performance in terms of efficiency, power density, cost, and lifetime, it is essential to perform simulation studies such as EASY5 , EP-SIM (Ayres et al 2000), and PowerCap (Capel et al 2002), and to build virtual prototypes (Jiang et al 2003) in most cases due to the high manufacturing cost and complexity of satellite EPS. This paper describes the basic concept of peak power tracking (PPT) algorithms, and the results of simulation and electrical test to verify the performance of PPT.…”

Section: Introductionmentioning

confidence: 99%

Energy Balance and Power Performance Analysis for Satellite in Low Earth Orbit

Jang¹,

Kim²,

Lee³

et al. 2010

Journal of Astronomy and Space Sciences

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The electrical power system (EPS) of Korean satellites in low-earth-orbit is designed to achieve energy balance based on a one-orbit mission scenario. This means that the battery has to be fully charged at the end of a one-orbit mission. To provide the maximum solar array (SA) power generation, the peak power tracking (PPT) method has been developed for a spacecraft power system. The PPT is operated by a software algorithm, which tracks the peak power of the SA and ensures the battery is fully charged in one orbit. The EPS should be designed to avoid the stress of electronics in order to handle the main bus power from the SA power. This paper summarizes the results of energy balance to achieve optimal power sizing and the actual trend analysis of EPS performance in orbit. It describes the results of required power for the satellite operation in the worst power conditions at the end-of-life, the methods and input data used in the energy balance, and the case study of energy balance analyses for the normal operation in orbit. Both 10:35 AM and 10:50 AM crossing times are considered, so the power performance in each case is analyzed with the satellite roll maneuver according to the payload operation concept. In addition, the data transmission to the Korea Ground Station during eclipse is investigated at the local-time-ascending-node of 11:00 AM to assess the greatest battery depth-of-discharge in normal operation.

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“…The construction of international space station (ISS) is one of the momentous steps in spaceflight history. The ISS is a multi-nation collaborative project serving as a space environment laboratory for a variety of scientific researches and a low Earth orbit staging base for long-duration missions [2], [3]. The ISS power system is a low-voltage direct current (LVDC) microgrid (MG) supplied by solar arrays.…”

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confidence: 99%

Multidimensional Time-Series Shapelet-Based Real-Time Fault Detection and Localization on ISS Electrical Power Distribution System

Liu,

Chen,

Dinavahi

2024

IEEE Trans. Instrum. Meas.

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International space station (ISS) is a grand invention for human beings to have a chance at exploring the outer space. Its operation is completely dependent on the autonomous power distribution system which transforms energy by solar arrays from the sun. There is a high demand for a reliable monitoring system that can accurately and timely detect and localize faults in its power system for the special working environment of the ISS. In this paper, a fault detection and localization (FDL) based on multi-dimensional time-series trend extracted shapelet (MTES) method was proposed. A fast shapelet discovery was created to accelerate the process of extracting shape features from timeseries signals collected from the ISS electrical power distribution system (EPDS). Then the techniques of randomization and information gain were exploited for the further shapelet selection. Finally, multi-dimensional time-series classification for FDL was solved by a designed random forest classifier. The real-time FDL measurement instrument was emulated on the Xilinx VCU128 FPGA board, while a hardware-in-the-loop (HIL) testing platform was established to verify the effectiveness, execution speed, and accuracy of the MTES method. Comparing with other state-of-the-art data-driven methods, higher accuracy (above 96%) and easier hardware implementation were achieved using MTES.

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Design and testing of spacecraft power systems using VTB

Cited by 25 publications

References 28 publications

Research on Semi Physical Test System of PCU on Satellite

Research on Semi Physical Test System of PCU on Satellite

Energy Balance and Power Performance Analysis for Satellite in Low Earth Orbit

Multidimensional Time-Series Shapelet-Based Real-Time Fault Detection and Localization on ISS Electrical Power Distribution System

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