Design Construction and testing of a microprocessor controlled three-phase variable frequency power transistor inverter
- Τίτλος
- Design Construction and testing of a microprocessor controlled three-phase variable frequency power transistor inverter
- Θέμα
- Microprocessors
- Δημιουργός
- Antoniou, 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
- 1989
- Συνεισφέρων
- Hadjioannou, Sotiris
- Yerocostas, A.
- Δικαιώματα
- Απαγορεύεται η δημοσίευση ή αναπαραγωγή, ηλεκτρονική ή άλλη χωρίς τη γραπτή συγκατάθεση του δημιουργού και κάτοχου των πνευματικών δικαιωμάτων.
- Μορφή
- Γλώσσα
- en
- Τύπος
- text
- Αναγνωριστικό
-
EED0007
- Σύνοψη
-
This project deals with the design, construction and testing of a three-phase Variable Frequency Power Inverter controlled by a microprocessor.
The inverter was designed to have 24V d.c. input and 415V 50HZ output with a power of 500VA.
Therefore to satisfy this requirement, a transformer of 500VA power rating with 24V primary and 240V/phase secondary was used.
The switching elements used were power transistors ( 2N3055 and PNP3055) and information concerning these transistors can be seen in APPΕNDIX 4.
The conduction angle of the power transistors can be 1200 or 1800 but in the desing of this project the 1800 was used which gives better output waveforms.
The control signals were generated by a Z80-MICROPROFCSSOR. The constructed power inverter was tested with both resistive and inductive loads and found to operate successfully.
The chapters discussed in this project were: Inverters in general, Thyristor and Transistor Inverters and their applications, the Z80-MICROPROFESSOR, the Design of the three-phase Variable Frequency Power Inverter as well as the circuit explanation, Calculations and Control Program Explanation.
Furthermore a chapter was needed for the testing and the results, also another chapter to discuss the operation of the circuit and ways to protect it and another chapter to refer to the further improvement of the three-phase power transistor inverter.
Finally this project is completed with personal conclusions.
- Πολυμέσα
-
EED 0007.pdf