[1] Far E Univ, Dept Elect Engn, Hsin Shin 744, Tainan County, Taiwan
[2] Natl Yun Lin Univ Sci & Technol, Grad Sch Engn Sci & Technol, Yunlin, Taiwan
[3] Natl Yun Lin Univ Sci & Technol, Dept Elect Engn, Yunlin, Taiwan
[4] Automot Res & Testing Ctr, R&D Div, Elect Vehicle & Syst Verificat Grp, Changhua, Taiwan