PUBLICATIONS

This paper proposes a sensorless control method using a full-order observer based on a novel flux model of an interior permanent

magnet synchronous motor (IPMSM) and the rotor position error compensation method in order to improve performance of the

maximum torque per ampere (MTPA) operation. Since the novel flux model only uses the d-axis inductance, the IPMSM is regarded

as the surface permanent mounted motor (SPMSM) in the novel flux model. However, the estimated rotor position error caused by

the reluctance component exists in this model. In case of the high power IPMSM, the estimated rotor position error is quite large

therefore, it cannot be neglected and affects the performance of the MTPA operation. To solve this problem, the estimated rotor

position error compensation method is proposed in this paper. The effectiveness of the proposed control method is verified by

simulation results.