Title :
A modulation technique for high power AC/DC multilevel converters for power system integration
Author :
Bifaretti, Stefano ; Zanchetta, Pericle ; Watson, Alan ; Tarisciotti, Luca ; Bellini, Armando ; Clare, Jon
Author_Institution :
Dept. of Electron. Eng., Univ. of Rome Tor Vergata, Rome, Italy
Abstract :
This paper presents a novel dedicated PWM technique for use with modular, multi-cellular converter for flexible power management of future electricity networks. The proposed converter is capable of connecting asynchronous grids together as well as incorporating renewable energy systems into the grid and improving power quality. The modulation is tested in this paper on a prototype rated at 300kVA. The proposed modulation strategy is described in detail along with the concept of the modular converter and an outline of its construction. Verification of the modulation effectiveness is provided by a comparison, performed by simulation, with other common modulation strategies. Finally, experimental results obtained from a prototype of a 3-cell cascaded converter, connected between two low voltage grid systems, have confirmed the validity of the proposed strategy.
Keywords :
AC-DC power convertors; PWM power convertors; power grids; power supply quality; 3-cell cascaded converter; PWM technique; apparent power 300 kVA; asynchronous grids; electricity networks; flexible power management; high power AC/DC multilevel converters; multicellular converter; power quality; power system integration; renewable energy systems; Bridge circuits; Converters; Delay; Harmonic analysis; Phase modulation; Switches; Converter Control; Multi-level Converters; Power distribution; Pulse Width Modulation;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2010 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-5286-6
Electronic_ISBN :
978-1-4244-5287-3
DOI :
10.1109/ECCE.2010.5618345
