New Optimal Current Control Methods for Energy-Efficient and Wide Speed-Range Operation of Hybrid-Field Synchronous Motor. - Shinji Shinnaka; Takayuki Sagawa (IEEE Trans. Ind. Electron., 2007)

New sensorless vector control of PMSM by discrete-time voltage injection of PWM carrier frequency - Sine- and cosine-form amplitudes extraction method. - Ryu Hosooka; Shinji Shinnaka; Naoto Nakamura (IECON, 2016)