Development of a ups system

Τίτλος

Development of a ups system

Θέμα

Uninterruptible power supply

Battery

Systems analysis

Δημιουργός

Papageorgiou, Antonis

Πηγή

Higher Technical Institute

Το πλήρες κείμενο είναι διαθέσιμο από το Υπουργείο Ενέργειας, Εμπορίου Βιομηχανίας και Τουρισμού.

Εκδότης

Library of Cyprus University of Technology

Ημερομηνία

1992

Συνεισφέρων

Michael, E.

Δικαιώματα

Απαγορεύεται η δημοσίευση ή αναπαραγωγή, ηλεκτρονική ή άλλη χωρίς τη γραπτή συγκατάθεση του δημιουργού και κάτοχου των πνευματικών δικαιωμάτων.

Μορφή

pdf

Γλώσσα

en

Τύπος

text

Αναγνωριστικό

EED0186

Σύνοψη

A UPS is a device that is mainly used to: -Provide uninterruptable AC supply -In case of mains failure to continue to deliver full supply through its butteries. Our objectives are: -To design and construct a UPS -To investigate the various supply disturbances in relation to their causes and effects. -To outline the characteristics of the various systems available. -To provide a cost analysis of the construction. On investigating this system many ways of dealing with it were considered as: -Our inverter requires high current capacity. So we have to choose a battery which will be cable to deliver this current demand. Further more the buttery must be cable to substain a continuous charge rate. -Another factor to be taken into account is the current rating of the switching elements used. More current supplied to the primary of the center tap transformer will result to higher output power. In our case the switching elements used are power transistors. We used power transistors because there is no need for commutation circuits as the thyristor requires. -In the control circuit we used an LM555 timer in order to switch ON or OFF the power transistors of the inverter.