1. PhD Student, National Research Centre of Pumps, Jiangsu University, Zhenjiang, PR China
2. Professor, College of Electrical, Energy and Power Engineering, Yangzhou University, Yangzhou, PR China(author for correspondence)
3. (IAHR Member), Professor, National Research Centre of Pumps, Jiangsu University, Zhenjiang, PR China
4. PhD Student, College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, PR China