1. Postdoctoral Research Station of Power Engineering and Engineering ThermalphysicsHarbin Institute of TechnologyHarbinPeople's Republic of China
2. School of Electrical Engineering and AutomationHarbin Institute of TechnologyHarbinPeople's Republic of China
3. School of Mechanical and Aerospace EngineeringQueen's University BelfastUK
4. School of Electronics, Electrical Engineering and Computer ScienceQueen's University BelfastUK