Title :
Three-level converters with selective Harmonic Elimination PWM for HVDC application
Author :
Beza, Mebtu ; Norrga, Staffan
Author_Institution :
Dept. of Energy & Environ., Chalmers Univ. of Technol., Göteborg, Sweden
Abstract :
In a voltage source converter (VSC) based HVDC system, the modulation scheme used is an important factor in achieving a desired harmonic performance with allowable semiconductor losses. In this paper, the use of selective Harmonic Elimination Pulse Width Modulation (HEPWM) for a three-level Neutral Point Clamped (NPC) converter in VSC based HVDC application will be discussed. Steady state performance of the converter system in terms of harmonics and losses will be evaluated using MATLAB and PSCAD/EMTDC simulation. Simulation results show a 37% improvement in total semiconductor loss with better harmonic performance by using the three-level solution compared to the two-level solution with the stated modulation scheme.
Keywords :
HVDC power convertors; PWM power convertors; power system CAD; HEPWM; HVDC application; MATLAB; PSCAD/EMTDC simulation; harmonic elimination pulse width modulation; semiconductor loss; three-level converters; three-level neutral point clamped converter; voltage source converter; Converters; Harmonic analysis; Insulated gate bipolar transistors; Power harmonic filters; Pulse width modulation; Semiconductor diodes; HEPWM; NPC Converter; Three-level Solution; Two-level Solution;
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.2010.5617787
