| Abstract: | This paper presents a novel sensorless control system for an interior permanent magnet synchronous motor (IPMSM) using adaptive observer on a stationary reference frame with its design and some experiments of position sensorless control. In sensorless control of IPMSM, adaptive observer structure and its design remain as one of the open problems. This is because the linear model on the stationary reference frame for IPMSM has not been established so far. As a result, the construction of an adaptive observer seems to be complicated owing to nonlinearity of the IPMSM model. From this viewpoint, a novel linear model of IPMSM on a stationary reference frame is first described in this paper. Second, an adaptive observer design is proposed based on γ‐positive real problem, yielding realization of both robust position estimation and robustly stable speed adaptation with respect to speed adaptation delay. Finally, some experiments with and without load torque at low and middle speed ranges are shown to demonstrate the feasibility and the effectiveness of the proposed system. Copyright © 2007 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc. |
