1. School of Electromechanical and Automotive Engineering, Yantai University, Yantai 264005, Shandong, P. R. China
2. Basic Research Center, School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, P. R. China
3. Center of Computational Physics and Energy Science, Yangtze River Delta Research Institute of NPU, Northwestern Polytechnical University, Taicang 215400, Jiangsu, P. R. China
4. Shandong Institute of Advanced Technology, Jinan 250100, Shandong, P. R. China
5. Department of Mechatronic Engineering, School of Mechanical Engineering, University of Jinan, Jinan 250022, Shandong, P. R. China
6. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China