1. Department of Electrical Engineering and Computer Science, The University of Tennessee, Knoxville, Knoxville, TN, USA
2. TBEA Company Ltd., Xi’an, China
3. Department of Electrical Engineering, Tsinghua University, Beijing, China
4. School of Electrical and Electronic Engineering, Nanyang Technological University, Jurong West, Singapore
5. Pre-Switch Inc., Campbell, CA, USA
6. EPC Power, Poway, CA, USA