Pulsating Signal Injection-Based Sensorless Control of PMSM Using Injection Axis Switching Scheme without Additional Offline Commissioning Test. - Chan-Hee Choi; Jul-Ki Seok (IAS, 2007)

Precise Torque Control in Flux-Weakening Operation of Surface-Mounted PM Motor with Magnetic Saliencies. - Ju-Young Jang; Chan-Hee Choi; Jul-Ki Seok (IAS, 2008)