[1] Department of Electrical and Computer Engineering, Electric Power and Power Electronics Center, Illinois Institute of Technology, Chicago, IL 60616, United States
[2] Department of Electrical and Computer Engineering, University of Illinois at Urbana/Champaign, Urbana, IL 61801-2918, United States
[3] Institute for Systems Research, Department of Electrical and Computer Engineering, University of Maryland, College Park, MD 20742, United States