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The authors have proposed the structure of the highvoltage power supply system of low-orbit spacecraft based on regulated current inverter, which allows adjusting solar battery voltage in a range sufficient to implement the maximum power point tracking mode. The characteristics at drift of current-voltage curve of solar battery and different values of the load were obtained. The power supply system...
This paper presents the building process of a small scale, cost effective portable solar power supply. The end product comes with a solar panel to capture and convert solar energy to electrical energy. The electrical energy was stored in a rechargeable battery with a charge controller to regulate the charging process. A battery level indicator was in place to monitor the battery storage capacity....
For voltage source inverter based 50 Hz or 60 Hz power supplies, it is conventionally assumed that double-loop control with an inner current-loop performs better than single-loop methods. However, this paper analyzes the role of the inner current-loop in double-loop digital control of 400 Hz inverter under low switching frequency condition. The results show that the inclusion of an inner current-loop...
Inverters are used to create single or polyphase AC voltages from a DC supply. A very common application for single-phase inverters are so-called "uninterruptable power supplies" (UPS) for computers and other critical loads. For sinusoidal AC outputs, the magnitude, frequency, and phase should be controllable. The purpose of this research, in collaboration with Astrid Energy Enterprises,...
This document presents a compilation of results from tests performed by iRoC Technologies on SER induced by alpha particles on SRAM memories for technology nodes from 180 nm to 65 nm. The aim of this study is to establish the variation of sensitivity with technology node for SEU and MCU, and to analyze the possible influence of different designs and technological parameters at a given technology node.
This paper deals with a unique solution related to failure detection in power supply units of large scale computers using LSI's, particularly power supply unit circuits. A large amount of current and low voltage are special features of large scale computers. When the power supply unit is operated in parallel, a failure can be detected easily if blocking diodes are connected in series through the output...
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