Full text available at http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=616743&newsearch=true&queryText=.QT.Multilevel%20STATCOM%20with%20Third%20Harmonic%20Elimination%20on%20the%20DC%20Link%20Capacitor%20Voltages
Simulation studies, confirmed by laboratory experiments, show that the undesirable third harmonic inherently present on the DC link capacitor voltages of multilevel converters can be eliminated by a 6-phase configuration in a shunt multilevel STATCOM. The principle can be extended to eliminate the residual sixth harmonic by configuring a 12-phase STATCOM