1. Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
2. Electric Power System Design Team, Hyundai Transys Inc., Hwaseong 18463, Republic of Korea
3. Department of Power System Engineering, Chonnam National University, Yeosu 59626, Republic of Korea
4. Department of Bio-Systems Machinery Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
5. Department of Electrical Engineering, Hanoi University of Science and Technology, Hanoi 100000, Vietnam