Sensorless PMSM Drive with DC-link Current Measurement. - Antti Piippo; Kalle Suomela; Marko Hinkkanen; Jorma Luomi (IAS, 2007)

Analysis of an Adaptive Observer for Sensorless Control of Interior Permanent Magnet Synchronous Motors. - Antti Piippo; Marko Hinkkanen; Jorma Luomi (IEEE Trans. Ind. Electron., 2008)