1. Department of Mechanical Facility Control Engineering, Korea University of Technology and Education, Cheonan 31253, Republic of Korea
2. Department of Research and Development, Hyowon Powertech Company, Busan 46241, Republic of Korea
3. Air Mobility Electric-Motor & Drive Research Team, Korea Electrotechnology Research Institute (KERI), Changwon 51543, Republic of Korea
4. Department of Electrical and Electronics Engineering, Pusan National University, Busan 46241, Republic of Korea