Learning Outcomes
The students should be able to:
1) analyze single-phase and three-phase circuits with diodes and thyristors
2) calculate the waveforms of the currents and voltages at the dc and ac part of various power-electronic converters
3) calculate in a mathematical way the level of the dc currents and voltages and of the ac currents of various power-electronic converters implemented with diodes or thyristors
4) calculate the current harmonic distortion at the ac side of the power-electronic converters
5) calculate the voltage harmonic distortion at the point of common coupling of the converter with the power grid.
Course Content (Syllabus)
The course is actually an introduction to the power-electronics circuits. It focuses on rectifier and inverter topologies with uncontrollable and controllable dc voltage.
More specifically the course includes the analysis of:
the properties and operation of the most commonly used power electronic switches (diodes, thyristors, IGBTs, MOSFETs, etc)
simple diode-rectifier circuits.
the single-phase full-bridge diode rectifier with constant current or constant voltage load.
the current commutation phenomenon.
the current harmonics caused by the operation of single-phase full-bridge diode rectifiers. The effect of the current harmonics on the voltage harmonics is also addressed.
the three-phase full-bridge diode rectifier with constant current or constant voltage load.
simple dc-ac rectifier circuits using thyristors
the single-phase and three-phase full-bridge implementing thyristors for the control of the dc voltage. The rectifying and inverting actions are addressed.
the single-phase and three-phase full-bridge implementing thyristors for the control of the dc voltage.
the most common power quality problems arising by the operation of thyristors bridges.
Keywords
power-electronic switches, rectifiers (ac/dc) and inverters (dc/ac) with diodes and thyristors, current commutation.
Course Bibliography (Eudoxus)
1)"Εισαγωγή στα Ηλεκτρονικά Ισχύος", 3η εκδοση, ISBN:978-960-418-250-3, των Mohan, Undeland, Robbins,σε μετάφραση του Νίκου Μάργαρη, εκδόσεις Α. Τζιολα & Υιοι ΟΕ, κωδικός στο "Ευδοξο":9573
2)"Ηλεκτρονικά Ισχύος", ISBN:978-960-418-158-2, του Ιορδάνη Κιοσκερίδη, ISBN:978-960-418-250-3, κωδικός στο "Ευδοξο":9421