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Electrical power system for a 3U CubeSat nanosatellite incorporating peak power tracking with dual redundant control

100%

Bester J. , Wilkinson R.

Przegląd Elektrotechniczny

2012

tom R. 88, nr 4a

300-304

Since the advent of the CubeSat nanosatellite standard it has been embraced by many universities as an affordable means of conducting space science, with the backbone of any such mission being the supply of electrical power to the spacecraft’s payloads. This paper details the design of a photovoltaic-battery based power supply utilising peak power trackers for solar array regulation and battery charging. Uniquely, the peak power tracking is executed by an active search algorithm, Perturb & Observe, in both analogue and digital form as a measure of redundancy.

W artykule opisano projekt baterii fotowoltaicznych wykorzystujący układ śledzenia maksymalnej mocy do sterowania procesem wytwarzania energii i ładowania baterii. Wykorzystano algorytm Perturb & Observe.

Solar energy and LED technologies for street lighting demand side management SLDSM

59%

Haffaf A. , Lakdja F. , Meziane R. , Alsace H.

tom R. 96, nr 4

33--38

In this research paper, solar energy and LED technologies as a street lighting demand side management SLDSM option are carried out. The economic feasibility of using solar energy in street lighting system SLS and the comparison between conventional high pressure sodium HPS and proposed LED technologies was discussed. The village of Brabra in M'sila, Algeria located at 35.39o N and 04. 54o E with 120 lamps was selected as a case study. HOMER software is used for system feasibility analysis over the project lifetime based on the economic and technical evaluation criteria such as total net present cost TNPC, COE and energy bill cost. From the results, LED technology and on-site solar photovoltaic generation were viewed as a DSM tool in the public street lighting sector. SLS based PV-LED reduce annual energy consumption, installation system and annual electricity bill costs, in addition to their economic and ecological nature.

W artykule zaprezentowano system zarządzania oświetleniem ulicznym z wykorzystaniem lamp LED wykorzystujący źródła fotowoltaiczne na przykładzie miasta Brabra w Algerii. .. Porównan ten z system z tradycyjnie stosowanym systemem wykorzystującym sodowe HPS.