1. School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
2. Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla 65409, Missouri, USA
3. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
4. School of Control and Computer Engineering, North China Electric Power University, Beijing 102206, China
5. Aix-Marseille Université, IUSTI/UMR CNRS 7343, 5 rue E. Fermi, Marseille Cedex 13 13453, France