%0 Conference Paper %B CIGRE Int. Symp. Electric Power Syst. Future-Integrating Supergrids and Microgrid, Date: 2011/09/01-2011/09/01, Location: Bologna, Italy %D 2011 %T Small Signal Stability Improvement of AC Transmission Networks Using HVDC Grid %A Pirooz Azad, Sahar %A Iravani, Reza %A Tate, Joseph %B CIGRE Int. Symp. Electric Power Syst. Future-Integrating Supergrids and Microgrid, Date: 2011/09/01-2011/09/01, Location: Bologna, Italy %G eng