1. Clean Energy Automotive Engineering Center and School of Automotive Studies; Tongji University (Jiading Campus); 4800 Caoan Road Shanghai 201804 P. R. China
2. Department of Electrical and Computer Engineering; Florida A&M University and Florida State University; Tallahassee FL 32310 USA
3. Aero-Propulsion; Mechatronics and Energy Center; Florida State University; Tallahassee FL 32310 USA