Zaixin Song (S’19) received the B.Eng. and M.Eng. degrees in electrical engineering and automation from Harbin Institute of Technology (HIT), Harbin, China, in 2016 and 2018, respectively. He received a Ph.D. degree in the School of Energy and Environment from the City University of Hong Kong (CityU), Hong Kong SAR, China, in 2021. Currently, he is working as a postdoctoral fellow at CityU, Hong Kong SAR, China. He has been working on electric machines for years. His research interests cover the design, analysis, optimization and control of emerging permanent magnet machines, particularly the high-speed machines and multi-phase machines, propulsion motors for automotive and aerospace applications, multi-physics modeling, simulation, and tests.