"Zongwei Liu,Akira Chiba,Yusuke Irino,Yuji Nakazawa","Optimum Pole Number Combination of a Buried Permanent Magnet Bearingless Motor and Test Results at an Output of 60 kW With a Speed of 37000 r/min",,"IEEE Open Jounal of Industry Applications",,,,"pp. 33-41",2020,Feb. "Akira Chiba,Zongwei Liu","A novel BPM bearingless motor model with small suspension force angle error","2019年電気学会産業応用部門大会",,,,,,2019,Aug. "Zongwei Liu,Akira Chiba","A novel BPM bearingless motor model with small suspension force angle error","第31回電磁力関連のダイナミクス",,,,,,2019,May "Zongwei Liu,Akira Chiba","Optimum Pole Number Combination for High-Speed High-Power BPM Bearingless Motor","ISMB16",,,,,,2018,Aug.